1
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Marin-Rimoldi E, Yancey AD, Shiflett MB, Maginn EJ. Adsorption of difluoromethane (HFC-32) and pentafluoroethane (HFC-125) and their mixtures in silicalite-1: An experimental and Monte Carlo simulation study. J Chem Phys 2024; 161:074701. [PMID: 39145562 DOI: 10.1063/5.0221413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 07/29/2024] [Indexed: 08/16/2024] Open
Abstract
Hydrofluorocarbons are a class of fluorinated molecules used extensively in residential and industrial refrigeration systems. This study examines the potential of using adsorption processes with the silicalite-1 zeolite to separate a mixture of difluoromethane (CH2F2, HFC-32) and pentafluoroethane (CF3CF2H, HFC-125) at various concentrations. Pure adsorption data were measured using a XEMIS gravimetric microbalance, whereas binary data were determined using the Integral Mass Balance method. Grand canonical Monte Carlo molecular simulations were performed with the Cassandra package. We found that the results from molecular simulations are in satisfactory agreement with experimental loading measurements. Moreover, we show that ideal adsorbed solution theory could not quantitatively match the experimental or computational measurements of binary adsorption or selectivity. Molecular simulations show that refrigerant molecules do not have a uniform distribution in the zeolite framework.
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Affiliation(s)
- Eliseo Marin-Rimoldi
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
| | - Andrew D Yancey
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, USA
- Wonderful Institute for Sustainable Engineering, University of Kansas, Lawrence, Kansas 66045, USA
| | - Mark B Shiflett
- Department of Chemical and Petroleum Engineering, University of Kansas, Lawrence, Kansas 66045, USA
- Wonderful Institute for Sustainable Engineering, University of Kansas, Lawrence, Kansas 66045, USA
| | - Edward J Maginn
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, USA
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2
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Shen C, Xue M, Qiu H, Guo W. Exceptionally Fast Separation of Xylene Isomers with Zeolitic Nanotube Array Membranes. J Am Chem Soc 2024; 146:13276-13281. [PMID: 38690762 DOI: 10.1021/jacs.4c01436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
The separation of xylene isomers is of vital importance in chemical industry but remains challenging due to their similar structure and overlapping physiochemical properties. Membrane-based separations using the zeolite MFI, graphene oxide, and metal-organic frameworks have been intensively studied for this application, but the performance is limited by the well-known rule that the filtrate permeance scales inversely with the membrane thickness. We propose a novel membrane design that is capable of breaking this rule, based on an array of recently discovered zeolite nanotubes. Each zeolite nanotube possesses a 3.6-nm-wide central channel, connecting to dense, uniform 0.8-nm-wide holes on its wall that act as selective pores. Comprehensive molecular dynamics simulations show that this membrane exhibits permeance exceeding current state-of-the-art membranes by at least an order of magnitude while simultaneously maintaining an acceptable selectivity. In particular, a thicker membrane featuring longer zeolite nanotubes exhibits a higher permeance due to the presence of more selective pores. The proposed membrane design is expected to be broadly applied to other gas separations and even desalination as long as zeolitic nanotubes with customized pores are available.
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Affiliation(s)
- Chun Shen
- Institute for Frontier Science, State Key Laboratory of Mechanics and Control of Mechanical Structure and Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Minmin Xue
- Institute for Frontier Science, State Key Laboratory of Mechanics and Control of Mechanical Structure and Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Hu Qiu
- Institute for Frontier Science, State Key Laboratory of Mechanics and Control of Mechanical Structure and Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
| | - Wanlin Guo
- Institute for Frontier Science, State Key Laboratory of Mechanics and Control of Mechanical Structure and Key Laboratory for Intelligent Nano Materials and Devices of the Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
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3
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Pokrovskiy O, Rostovschikova I, Ovchinnikov D. Entropy driven separation of xylene isomers on graphitic carbon adsorbents. J Chromatogr A 2024; 1716:464641. [PMID: 38241897 DOI: 10.1016/j.chroma.2024.464641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2023] [Revised: 01/06/2024] [Accepted: 01/08/2024] [Indexed: 01/21/2024]
Abstract
Separation of xylene isomers remains one of the most important and challenging applications of adsorption-based separations in petrochemical industry. Despite the sustainable success of zeolite-based separations a search for efficient adsorbents selective for xylenes, especially para-xylene, is constantly ongoing. In this work, a potentially scalable chromatographic separation of all three xylenes was achieved on graphitic carbon sorbents, including a self-packed sorbent based on an oligo-graphene. A curious feature of this separation is stronger retention of para-xylene than meta- and, in some conditions, even than ortho-xylene. Noticeably, separation selectivity between para- and meta-isomers does not depend on temperature. Apparently, lower entropy of para-xylene in solution due to its higher molecular symmetry leads to a lesser adsorption entropy loss, which makes its adsorption statistically more likely. The concept of using carbon adsorbents for entropy driven chromatography separations may be useful for the isolation of xylenes from their mixture and, possibly, for other positional isomers separation.
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Affiliation(s)
- Oleg Pokrovskiy
- Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, Moscow, Russia.
| | - Irina Rostovschikova
- Kurnakov Institute of General and Inorganic Chemistry of Russian Academy of Sciences, Moscow, Russia
| | - Denis Ovchinnikov
- Core Facility Center "Arktika", Lomonosov Northern (Arctic) Federal University, Arkhangelsk, Russia
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4
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Sun Y, Hu S, Yan J, Ji T, Liu L, Wu M, Guo X, Liu Y. Oriented Ultrathin π-complexation MOF Membrane for Ethylene/Ethane and Flue Gas Separations. Angew Chem Int Ed Engl 2023; 62:e202311336. [PMID: 37670537 DOI: 10.1002/anie.202311336] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Revised: 08/22/2023] [Accepted: 09/04/2023] [Indexed: 09/07/2023]
Abstract
Rational design and engineering of high-performance molecular sieve membranes towards C2 H4 /C2 H6 and flue gas separations remain a grand challenge to date. In this study, through combining pore micro-environment engineering with meso-structure manipulation, highly c-oriented sub-100 nm-thick Cu@NH2 -MIL-125 membrane was successfully prepared. Coordinatively unsaturated Cu ions immobilized in the NH2 -MIL-125 framework enabled high-affinity π-complexation interactions with C2 H4 , resulting in an C2 H4 /C2 H6 selectivity approaching 13.6, which was 9.4 times higher than that of pristine NH2 -MIL-125 membrane; moreover, benefiting from π-complexation interactions between CO2 and Cu(I) sites, our membrane displayed superior CO2 /N2 selectivity of 43.2 with CO2 permeance of 696 GPU, which far surpassed the benchmark of other pure MOF membranes. The above multi-scale structure optimization strategy is anticipated to present opportunities for significantly enhancing the separation performance of diverse molecular sieve membranes.
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Affiliation(s)
- Yanwei Sun
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Shen Hu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Sinopec Nanjing catalyst co., ltd., Nanjing, 210000, China
| | - Jiahui Yan
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Taotao Ji
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Liangliang Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Mingming Wu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Xinwen Guo
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
| | - Yi Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian, 116024, China
- Dalian Key Laboratory of Membrane Materials and Membrane Processes, Dalian University of Technology, Dalian, 116024, China
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5
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Zhang Q, Li J, Wang X, He G, Li L, Xu J, Mei D, Terasaki O, Yu J. Silanol-Engineered Nonclassical Growth of Zeolite Nanosheets from Oriented Attachment of Amorphous Protozeolite Nanoparticles. J Am Chem Soc 2023; 145:21231-21241. [PMID: 37748094 DOI: 10.1021/jacs.3c04031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/27/2023]
Abstract
Zeolite nonclassical growth via particle attachment has been proposed for two decades, yet the attachment mechanism and kinetic regulation remain elusive. Here, nonclassical growth of an MFI-type zeolite has been achieved by using amorphous protozeolite (PZ) nanoparticles containing encapsulated TPA+ templates and abundant silanols (Si-OH) as sole precursors under hydrothermal conditions. The silanol characteristics of the precursor were studied by two-dimensional (2D) solid-state nuclear magnetic resonance (NMR) correlation spectroscopy, which were proven to play critical roles in determining precursor attachment behavior and crystal growth orientation. Under mechanical ball-milling or tablet-pressing process, pressure drove the fusion of spherical PZ into platelet-like integrated PZ (IPZ) coupled with transformations of external silanols from evenly distributed to curvature-dependent distributed and internal silanols from isolated to spatially proximate. Compared to isolated silanols, the spatially proximate silanols possessed a stronger correlation with TPA+, benefiting the formation of Si-O-Si bonds via silanol condensation. Subsequently, driven by minimization of surface energy, particle attachment of the platelet-like IPZ precursor preferentially occurred at high-curvature surfaces with high-density silanols, leading to anisotropic rates of nonclassical growth and thus the formation of high-aspect-ratio MFI-type zeolite nanosheets. Advanced electron microscopy provided direct evidence of attachment of amorphous IPZ precursors to crystalline intermediate surfaces along the c-axis direction with the formation of amorphous-crystalline interfaces, followed by interface elimination and structural evolution to a single-crystalline phase. Our findings not only unravel the zeolite nonclassical growth mechanism but also reveal the critical role of silanol chemistry in kinetic regulation, which is of great importance for pursuing a tailored zeolite synthesis.
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Affiliation(s)
- Qiang Zhang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Junyan Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
- Centre for High-resolution Electron Microscopy (CℏEM), School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Xingxing Wang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Guangyuan He
- School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Lin Li
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
- Electron Microscopy Center, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
| | - Jun Xu
- National Centre for Magnetic Resonance in Wuhan, State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, P. R. China
| | - Donghai Mei
- School of Materials Science and Engineering, Tiangong University, Tianjin 300387, P. R. China
| | - Osamu Terasaki
- Centre for High-resolution Electron Microscopy (CℏEM), School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Jihong Yu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
- International Center of Future Science, Jilin University, 2699 Qianjin Street, Changchun 130012, P. R. China
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6
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Zarębska K, Nomura M, Wolczko M, Szczurowski J, Pawlak B, Baran P. Sorption of Polar Sorbates NH 3, H 2O, SO 2 and CO 2 on Selected Inorganic Materials. MATERIALS (BASEL, SWITZERLAND) 2023; 16:4853. [PMID: 37445169 DOI: 10.3390/ma16134853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 06/22/2023] [Accepted: 07/05/2023] [Indexed: 07/15/2023]
Abstract
In this paper, the sorption of NH3, H2O, SO2 and CO2 was tested for several selected inorganic materials. The tests were performed on samples belonging to two topologies of materials, faujasite (FAU) and framework-type MFI, the structures of which differ in pore size and connectivity. All sorbates are important in terms of reducing their emissions to the environment. They have different chemical nature: basic, alkaline, and acidic. They are all polar in structure and composition and two of them (ammonia and water vapor) can form hydrogen bonds. These differences result in different interactions with the surface of the adsorbents. This paper presents experimental data and proposes a mathematical description of the sorption process. The best fit of the experimental data was obtained for the Toth and GAB models. The studies showed that among the selected samples, faujasite has the best sorption capacity for ammonia and water vapor, while the best sorbent for sulfur dioxide is the MFI framework type. These materials behave like molecular sieves and can be used for quite selective adsorption of relevant gases. In addition, modification of the faujasite with organic silane resulted in a drastic reduction in the surface area of the sorbent, resulting in significantly lower sorption capacities for gases.
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Affiliation(s)
- Katarzyna Zarębska
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Mikihiro Nomura
- Department of Applied Chemistry, Shibaura Institute of Technology, 3-7-5 Toyosu, Koto-ku, Tokyo 135-8548, Japan
| | - Marta Wolczko
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Jakub Szczurowski
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Bartłomiej Pawlak
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
| | - Paweł Baran
- Faculty of Energy and Fuels, AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland
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7
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Yuan H, Li K, Shi D, Yang H, Yu X, Fan W, Buenconsejo PJS, Zhao D. Large-Area Fabrication of Ultrathin Metal-Organic Framework Membranes. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2211859. [PMID: 36852540 DOI: 10.1002/adma.202211859] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Revised: 02/13/2023] [Indexed: 05/05/2023]
Abstract
Metal-organic framework (MOF)-based membranes, featuring potential molecular sieving effects and therefore capable of surmounting the ubiquitous trade-off between membrane selectivity and permeability, hold great promise for multitudinous chemical separations. Nevertheless, it remains highly challenging for the large-area fabrication of ultrathin MOF membranes with variable thickness, great homogeneity, and preferential orientation. Herein, this work reports the facile fabrication of ultrathin (down to 20 nm) NUS-8 membranes in large-area (>200 cm2 ) yet with great homogeneity and texture along (00l) direction due to the superior solution processability of the as-synthesized NUS-8 nanosheets. The resultant NUS-8 membranes with good adhesion properties and certain flexibility exhibit excellent rejections (>98% for Mg2+ and Al3+ , and dyes with molecular weights larger than 585.5 g mol-1 ) toward aqueous separation of various metal ions and dyes at modest permeance (1-3.2 L m-2 h-1 bar-1 ) due to the well-aligned structures. Such separation performance outstands among polymetric membranes, thin-film composite membranes, mixed matrix membranes, and other MOF membranes reported in the literature. The separation mechanism is reasonably discussed based on the experimental and theoretical results. This study opens up novel perspectives for preparing ultrathin and large-area MOF membranes using the solution processability of MOFs.
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Affiliation(s)
- Hongye Yuan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
- State Key Laboratory for Mechanical Behavior of Materials, Shaanxi International Research Center for Soft Matter, School of Materials Science and Engineering, Xi'an Jiaotong University, Xi'an, 710049, P. R. China
- State Key Laboratory of Molecular Engineering of Polymers, Fudan University, Shanghai, 200438, P. R. China
| | - Kerui Li
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China
| | - Dongchen Shi
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Hao Yang
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Xin Yu
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Weidong Fan
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
| | - Pio John S Buenconsejo
- Facility for Analysis Characterization Testing Simulation (FACTS), Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Dan Zhao
- Department of Chemical and Biomolecular Engineering, National University of Singapore, 4 Engineering Drive 4, Singapore, 117585, Singapore
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8
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Scalable synthesis and modular properties of tubular silicalite-1 membranes for industrial butane isomer separation. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123496] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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9
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Liu Y, Chen S, Ji T, Yan J, Ding K, Meng S, Lu J, Liu Y. Room-Temperature Synthesis of Zeolite Membranes toward Optimized Microstructure and Enhanced Butane Isomer Separation Performance. J Am Chem Soc 2023; 145:7718-7723. [PMID: 36867559 DOI: 10.1021/jacs.3c00009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023]
Abstract
Room temperature (RT) synthesis of high-performance zeolite membranes, which is profound from techno-economic and eco-friendly perspectives, remains a grand challenge. In this work, we pioneered the RT preparation of well-intergrown pure-silica MFI zeolite (Si-MFI) membranes, which was realized through adopting highly reactive NH4F-mediated gel as nutrient during epitaxial growth. Benefiting from the introduction of fluoride anions as mineralizing agent as well as precisely tuned nucleation and growth kinetics at RT, both their grain boundary structure and thickness could be deliberately controlled, resulting in the formation of Si-MFI membranes showing unprecedented n-/i-butane separation factor (96.7) and n-butane permeance (5.16 × 10-7 mol m-2 s-1 Pa-1) in the case of a feed molar ratio of 10/90, which well transcended the state-of-the-art membranes reported in the literature. This RT synthetic protocol was also proven effective for preparing highly b-oriented Si-MFI film, thus showing great promise for the preparation of diverse zeolite membranes with optimized microstructure and superior performance.
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Affiliation(s)
- Yi Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Sixing Chen
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Taotao Ji
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Jiahui Yan
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Kaishi Ding
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Shengyan Meng
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Jinming Lu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
| | - Yi Liu
- State Key Laboratory of Fine Chemicals, Frontiers Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China.,Dalian Key Laboratory of Membrane Materials and Membrane Processes, Dalian University of Technology, Linggong Road 2, Ganjingzi District, Dalian 116024, China
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10
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Park JH, Kim D. High-temperature vapor permeation of preferentially b-oriented zeolite MFI membranes fabricated from nanocrystal-containing nanosheets. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
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11
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Dakhchoune M, Duan X, Villalobos LF, Avalos CE, Agrawal KV. Hydrogen-sieving zeolitic films by coating zeolite nanosheets on porous polymeric support. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
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12
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Zhang X, Wang N, Liu T, Wu Y, Wang Z, Wang H. Precisely tailored graphene oxide membranes on glass fiber supports for efficient hydrogen separation. J Memb Sci 2023. [DOI: 10.1016/j.memsci.2023.121529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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13
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Ma B, Zhu Y, Hong H, Cui L, Gao H, Zhao D, Wang B, Zhou R, Xing W. Improved silicalite-1 membranes on 61-channel monolithic supports for n-butane/i-butane separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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14
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Emerging membranes for separation of organic solvent mixtures by pervaporation or vapor permeation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.121729] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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15
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Microstructural manipulation of MFI-type zeolite films/membranes: Current status and perspectives. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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16
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Saulat H, Song W, Yang J, Yan T, He G, Tsapatsis M. Fabrication of b-oriented MFI membranes from MFI nanosheet layers by ammonium sulfate modifier for the separation of butane isomers. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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17
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Liu Y, McGuinness EK, Jean BC, Li Y, Ren Y, Rio BGD, Lively RP, Losego MD, Ramprasad R. Vapor-Phase Infiltration of Polymer of Intrinsic Microporosity 1 (PIM-1) with Trimethylaluminum (TMA) and Water: A Combined Computational and Experimental Study. J Phys Chem B 2022; 126:5920-5930. [PMID: 35920864 DOI: 10.1021/acs.jpcb.2c01928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Vapor-phase infiltration, a postpolymerization modification process, has demonstrated the ability to create organic-inorganic hybrid membranes with excellent stability in organic solvents while maintaining critical membrane properties of high permeability and selectivity. However, the chemical reaction pathways that occur during VPI and their implications on the hybrid membrane stability are poorly understood. This paper combines in situ quartz crystal microbalance gravimetry (QCM) and ex situ chemical characterization with first-principles simulations at the atomic scale to study each processing step in the infiltration of polymer of intrinsic microporosity 1 (PIM-1) with trimethylaluminum (TMA) and its co-reaction with water vapor. Building upon results from in situ QCM experiments and SEM/EDX, which find TMA remains within PIM-1 even under long desorption times, density functional theory (DFT) simulations identify that an energetically stable coordination forms between the metal-organic precursor and PIM-1's nitrile functional group during the precursor exposure step of VPI. In the subsequent water vapor exposure step, the system undergoes a series of exothermic reactions to form the final hybrid membrane. DFT simulations indicate that these reaction pathways result in aluminum oxyhydroxide species consistent with ex situ XPS and FTIR characterization. Both NMR and DFT simulations suggest that the final aluminum structure is primarily 6-fold coordinated and that the aluminum is at least dimerized, if not further "polymerized". According to the simulations, coordination of the aluminum with at least one nitrile group from the PIM-1 appears to weaken significantly as the final inorganic structure emerges but remains present to enable the formation of the 6-fold coordination species. Water molecules are proposed to complete the coordination complex without further increasing the aluminum's oxidation state. This study provides new insights into the infiltration process and the chemical structure of the final hybrid membrane including support for the possible mechanism of solvent stability.
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Affiliation(s)
- Yifan Liu
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Emily K McGuinness
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Benjamin C Jean
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Yi Li
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Yi Ren
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive North West, Atlanta, Georgia 30332-0100, United States
| | - Beatriz G Del Rio
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Ryan P Lively
- School of Chemical & Biomolecular Engineering, Georgia Institute of Technology, 311 Ferst Drive North West, Atlanta, Georgia 30332-0100, United States
| | - Mark D Losego
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
| | - Rampi Ramprasad
- School of Materials Science and Engineering, Georgia Institute of Technology, 771 Ferst Drive NW, Atlanta, Georgia 30332, United States
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18
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Banihashemi F, Lin JY. B-oriented MFI zeolite membranes for xylene isomer separation - Effect of xylene activity on separation performance. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2022.120492] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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19
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20
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Wu J, Wu H, Wang B, Zhou R, Xing W. One-Step Scalable Fabrication of Highly Selective Monolithic Zeolite MFI Membranes for Efficient Butane Isomer Separation. ACS APPLIED MATERIALS & INTERFACES 2022; 14:21198-21206. [PMID: 35475613 DOI: 10.1021/acsami.2c02456] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The reproducible fabrication of large-area zeolite membranes for gas separation is still a great challenge. We report the scalable fabrication of high-performance zeolite MFI membranes by single-step secondary growth on the 19-channel alumina monoliths for the first time. The packing density and mechanical strength of the monolithic membranes are much higher for these than for tubular ones. Separation performance of the monolithic membranes toward the butane isomer mixture was comparably evaluated using the vacuum and Wicke-Kallenbach modes. The n-butane permeances and n-butane/i-butane separation factors for the three membranes with an effective area of ∼84 cm2 were >1.0 × 10-7 mol (m2 s Pa)-1 and >50 at 343 K for an equimolar n-butane/i-butane mixture, respectively. We succeeded in scaling up the membrane synthesis with the largest area of 270 cm2 to date which has 1.3 times the area of an industrial 1 m long tubular membrane. Monolith supported zeolite MFI membranes show great potential for industrial n-butane/i-butane separation.
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Affiliation(s)
- Jiyang Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Haolin Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Bin Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Rongfei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
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21
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Kim D, Ghosh S, Akter N, Kraetz A, Duan X, Gwak G, Rangnekar N, Johnson JR, Narasimharao K, Malik MA, Al-Thabaiti S, McCool B, Boscoboinik JA, Mkhoyan KA, Tsapatsis M. Twin-free, directly synthesized MFI nanosheets with improved thickness uniformity and their use in membrane fabrication. SCIENCE ADVANCES 2022; 8:eabm8162. [PMID: 35385314 PMCID: PMC8986103 DOI: 10.1126/sciadv.abm8162] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Accepted: 02/11/2022] [Indexed: 06/14/2023]
Abstract
Zeolite nanosheets can be used for the fabrication of low-defect-density, thin, and oriented zeolite separation membranes. However, methods for manipulating their morphology are limited, hindering progress toward improved performance. We report the direct synthesis (i.e., without using exfoliation, etching, or other top-down processing) of thin, flat MFI nanosheets and demonstrate their use as high-performance membranes for xylene isomer separations. Our MFI nanosheets were synthesized using nanosheet fragments as seeds instead of the previously used MFI nanoparticles. The obtained MFI nanosheets exhibit improved thickness uniformity and are free of rotational and MEL intergrowths as shown by transmission electron microscopy (TEM) imaging. The nanosheets can form well-packed nanosheet coatings. Upon gel-free secondary growth, the obtained zeolite MFI membranes show high separation performance for xylene isomers at elevated temperature (e.g., p-xylene flux up to 1.5 × 10-3 mol m-2 s-1 and p-/o-xylene separation factor of ~600 at 250°C).
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Affiliation(s)
- Donghun Kim
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Supriya Ghosh
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
| | - Nusnin Akter
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Andrea Kraetz
- Department of Chemical and Biomolecular Engineering and Institute for NanoBiotechnology, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Xuekui Duan
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
| | - Gyeongseok Gwak
- School of Chemical Engineering, Chonnam National University, Gwangju 61186, Republic of Korea
| | - Neel Rangnekar
- Separations and Process Chemistry, Corporate Strategic Research, ExxonMobil Research and Engineering, Annandale, NJ 08801, USA
| | - J. R. Johnson
- Separations and Process Chemistry, Corporate Strategic Research, ExxonMobil Research and Engineering, Annandale, NJ 08801, USA
| | - Katabathini Narasimharao
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Maqsood Ahmad Malik
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Shaeel Al-Thabaiti
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Benjamin McCool
- Separations and Process Chemistry, Corporate Strategic Research, ExxonMobil Research and Engineering, Annandale, NJ 08801, USA
| | - J. Anibal Boscoboinik
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - K. Andre Mkhoyan
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455, USA
| | - Michael Tsapatsis
- Department of Chemical and Biomolecular Engineering and Institute for NanoBiotechnology, Whiting School of Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
- Applied Physics Laboratory, Johns Hopkins University, Laurel, MD 20723, USA
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22
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Facile Synthesis of Nanosheet-Stacked Hierarchical ZSM-5 Zeolite for Efficient Catalytic Cracking of n-Octane to Produce Light Olefins. Catalysts 2022. [DOI: 10.3390/catal12030351] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The development of an effective strategy for synthesizing two-dimensional MFI zeolites has attracted more and more attention. Herein, nanosheet-stacked hierarchical ZSM-5 zeolite was obtained by a seed-assisted hydrothermal synthesis route using a small amount of [C18H37-N+(CH3)2-C6H12-N+(CH3)2-C6H12]Br2 (C18-6-6Br2) as a zeolite structure-directing agent and triethylamine (TEA) as a zeolite growth modifier. By varying the molar ratio of C18-6-6Br2/TEA from 2.5/0 to 2.5/40, the morphologies and textural properties of the resultant HZ5-2.5/x catalysts were finely modulated. By increasing x from 5 to 40, the morphology of the HZ5-2.5/x changed from unilamellar assembly with narrow a–c plane to intertwined nanosheets with wide a–c plane and multilamellar nanosheets with house-of-cards morphology. The thickness of these nanosheets was almost 8–10 nm. In addition, selectivity to light olefins reached 70.7% for the HZ5-2.5/10 catalyst, which was 6.6% higher than that for CZSM-5 (64.1%). Furthermore, the MFI zeolite nanosheets exhibited better anticoking stability within the 60 h reaction time compared to conventional ZSM-5 zeolite, which could be attributed to the short diffusion path and hierarchical porosity. This work will provide valuable insights into the rational design of novel zeolite catalysts for the efficient cracking of hydrocarbons.
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23
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Lee M, Lee G, Jeong Y, Oh WJ, Yeo JG, Lee JH, Choi J. Understanding and improving the modular properties of high-performance SSZ-13 membranes for effective flue gas treatment. J Memb Sci 2022. [DOI: 10.1016/j.memsci.2021.120246] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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24
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Guo H, Wan Z, Li Y, He X, Huang A. Synthesis of Graphene Oxide Membrane for Separation of
p
‐Xylene and
o
‐Xylene by Pervaporation. CHEM-ING-TECH 2021. [DOI: 10.1002/cite.202100084] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hao Guo
- East China Normal University Shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering Dongchuan Road 500 200241 Shanghai China
| | - Zheng Wan
- East China Normal University Shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering Dongchuan Road 500 200241 Shanghai China
| | - Yanhong Li
- East China Normal University Shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering Dongchuan Road 500 200241 Shanghai China
| | - Xiao He
- East China Normal University Shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering Dongchuan Road 500 200241 Shanghai China
| | - Aisheng Huang
- East China Normal University Shanghai Key Laboratory of Green Chemistry and Chemical Processes Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development School of Chemistry and Molecular Engineering Dongchuan Road 500 200241 Shanghai China
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25
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Shao X, Zhang Y, Li J, Wang Z, Zhang X, Wang L, Yuan W, Wang H. Seed-sol-assisted construction of a coffin-shaped multilamellar ZSM-5 single crystal using CTAB. Chem Commun (Camb) 2021; 57:10624-10627. [PMID: 34570132 DOI: 10.1039/d1cc04620a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A coffin-shaped multilamellar ZSM-5 single crystal (CMZS) composed of orderly stacked 2D nanosheets (70-100 nm) was synthesized via the use of cetyltrimethylammonium bromide (CTAB) in the presence of silicalite-1 seed sol. This crystallization strategy opens a facile approach for industrial applications using CMZS in the catalytic conversion of bulky molecules.
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Affiliation(s)
- Xiuli Shao
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People's Republic of China.
| | - Yu Zhang
- National Energy Group Ningxia Coal Industry Co., Ltd. coal chemical industry technology research institute, Yinchuan, 750411, People's Republic of China
| | - Jun Li
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People's Republic of China.
| | - Zheng Wang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People's Republic of China.
| | - Xuan Zhang
- State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, People's Republic of China.
| | - Lin Wang
- National Energy Group Ningxia Coal Industry Co., Ltd. coal chemical industry technology research institute, Yinchuan, 750411, People's Republic of China
| | - Wei Yuan
- National Energy Group Ningxia Coal Industry Co., Ltd. coal chemical industry technology research institute, Yinchuan, 750411, People's Republic of China
| | - Huanting Wang
- Department of Chemical Engineering, Monash University, Melbourne, Australia
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26
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Yang Y, Ma N, Wu X, Lu X, Yin Z, Zhang H, Wang Z. Induction of zeolite membrane formation by implanting zeolite crystals into the precursor of ceramic supports. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119452] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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27
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Highly CO2-selective and moisture-resistant bilayer silicalite-1/SSZ-13 membranes with gradient pores for wet CO2/CH4 and CO2/N2 separations. J Memb Sci 2021. [DOI: 10.1016/j.memsci.2021.119565] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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28
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Zeolite-like performance for xylene isomer purification using polymer-derived carbon membranes. Proc Natl Acad Sci U S A 2021; 118:2022202118. [PMID: 34493655 DOI: 10.1073/pnas.2022202118] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Polymers of intrinsic microporosity (PIMs) have been used as precursors for the fabrication of porous carbon molecular sieve (CMS) membranes. PIM-1, a prototypical PIM material, uses a fused-ring structure to increase chain rigidity between spirobisindane repeat units. These two factors inhibit effective chain packing, thus resulting in high free volume within the membrane. However, a decrease of pore size and porosity was observed after pyrolytic conversion of PIM-1 to CMS membranes, attributed to the destruction of the spirocenter, which results in the "flattening" of the polymer backbone and graphite-like stacking of carbonaceous strands. Here, a spirobifluorene-based polymer of intrinsic microporosity (PIM-SBF) was synthesized and used to fabricate CMS membranes that showed significant increases in p-xylene permeability (approximately four times), with little loss in p-xylene/o-xylene selectivity (13.4 versus 14.7) for equimolar xylene vapor separations when compared to PIM-1-derived CMS membranes. This work suggests that it is feasible to fabricate such highly microporous CMS membranes with performances that exceed current state-of-the-art zeolites at high xylene loadings.
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29
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Polyukhov DM, Poryvaev AS, Sukhikh AS, Gromilov SA, Fedin MV. Fine-Tuning Window Apertures in ZIF-8/67 Frameworks by Metal Ions and Temperature for High-Efficiency Molecular Sieving of Xylenes. ACS APPLIED MATERIALS & INTERFACES 2021; 13:40830-40836. [PMID: 34423631 DOI: 10.1021/acsami.1c12166] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Separation of structurally similar components from their mixtures is one of the most promising applications of metal-organic frameworks (MOFs). A high efficiency of such molecular sieving requires fine tuning of the MOF structure. In this work, we investigate subtle metal- and temperature-induced changes in window dimensions of zeolitic imidazolate frameworks (ZIF-8(Zn) and ZIF-67(Co)) and apply such structural tuning for efficient separation of xylene isomers (p-, m-, and o-xylenes). The use of Co instead of Zn favorably modifies window geometry: it accelerates the diffusion of all components by a factor of 2-3 while maintaining closely the same separation efficiency as that of ZIF-8(Zn). Outstanding selectivity above 18:1 and faster isolation of demanded p-xylene from the ternary mixture using ZIF-67(Co) have been demonstrated at room temperature, opening new horizons for its energy-efficient xylene separation. More generally, our findings suggest the prospective ways to tune various MOFs for target liquid-state separations.
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Affiliation(s)
| | - Artem S Poryvaev
- International Tomography Center SB RAS, Novosibirsk 630090, Russia
| | | | - Sergey A Gromilov
- Nikolaev Institute of Inorganic Chemistry, Novosibirsk 630090, Russia
| | - Matvey V Fedin
- International Tomography Center SB RAS, Novosibirsk 630090, Russia
- Novosibirsk State University, Novosibirsk 630090, Russia
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30
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Contribution of Pore-Connectivity to Permeation Performance of Silicalite-1 Membrane; Part I, Pore Volume and Effective Pore Size. MEMBRANES 2021; 11:membranes11060382. [PMID: 34073754 PMCID: PMC8225034 DOI: 10.3390/membranes11060382] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 05/21/2021] [Accepted: 05/21/2021] [Indexed: 11/16/2022]
Abstract
The micropore volumes and effective pore sizes of two types of silicalite-1 membranes were compared with those of a typical silicalite-1 powder. The silicalite-1 membrane with fewer grain boundaries in the membrane layer showed similar micropore volume and effective pores size to those of the silicalite-1 powder. In contrast, when the silicalite-1 membrane contained many grain boundaries, relatively small micropore volume and effective pore size were observed, suggesting that narrowing and obstruction of the micropore would occur along grain boundaries due to the disconnection of the zeolite pore. The silicalite-1 membrane with fewer grain boundaries exhibited relatively high permeation properties for C6-C8 hydrocarbons. There was an over 50-fold difference in benzene permeance between these two types of membranes. We concluded that it is important to reduce grain boundaries and improve pore-connectivity to develop an effective preparation method for obtaining a highly permeable membrane.
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31
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He QP, Zou Y, Wang PF, Dou XM. MFI-Type Zeolite Membranes for Pervaporation Separation of Dichlorobenzene Isomers. ACS OMEGA 2021; 6:8456-8462. [PMID: 33817506 PMCID: PMC8015106 DOI: 10.1021/acsomega.1c00214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/14/2021] [Accepted: 03/05/2021] [Indexed: 06/12/2023]
Abstract
MFI-type zeolitic membranes were prepared on the porous α-A2O3 support to investigate the separation properties of dichlorobenzene isomers. The pervaporation tests were performed with unary and binary isomer mixtures at 333 K. The results indicate that the silicalite membranes, irrespective of being synthesized by the templated or template-free method, are permeable for all dichlorobenzene isomers. The pervaporation fluxes of the pure dichlorobenzene isomers decrease in the order p-DCB > o-DCB > m-DCB. For the binary pervaporation system, the dichlorobenzene fluxes are all less than those with a single component due to the binary interactions between DCB isomers and between the DCB isomer and the zeolite membrane. Comparatively, the template-free MFI-type zeolite exhibits higher selectivity for dichlorobenzene isomers due to less inter-crystalline gaps. The separation factors for p-/o-DCB and p-/m-DCB can reach 16.7 and 22.0, respectively.
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Affiliation(s)
- Qiu-Ping He
- Institute
of Photonics & Bio-medicine, School
of Science, East China University of Science and Technology, Shanghai 200062, China
- Shanghai
Lvqiang New Materials Comapny Ltd, Shanghai 200062, China
| | - Yun Zou
- Shanghai
Lvqiang New Materials Comapny Ltd, Shanghai 200062, China
| | - Peng-Fei Wang
- Shanghai
Lvqiang New Materials Comapny Ltd, Shanghai 200062, China
- State
Key Laboratory of Polyolefin Catalytic Technology and High Performance
Material, Shanghai Research Institute of
Chemical Industry Company Ltd, Shanghai 200062, China
| | - Xiao-ming Dou
- Institute
of Photonics & Bio-medicine, School
of Science, East China University of Science and Technology, Shanghai 200062, China
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32
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Liu Y, Li M, Chen Z, Cui Y, Lu J, Liu Y. Hierarchy Control of MFI Zeolite Membrane towards Superior Butane Isomer Separation Performance. Angew Chem Int Ed Engl 2021; 60:7659-7663. [PMID: 33411389 DOI: 10.1002/anie.202017087] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Indexed: 11/08/2022]
Abstract
Microstructural optimization (such as thickness and preferred orientation) is a major concern for performance enhancement of zeolite membranes. In this study, we demonstrated that the introduction of hierarchy easily enabled concurrent thickness reduction and orientation control of zeolite membranes. Specifically, hierarchical MFI zeolite membranes comprising higher degree of (h0h) preferentially oriented ultrathin (ca. 390 nm) selective top layers and porous intermediate layers on porous α-Al2 O3 substrates were fabricated. The use of hollow-structured MFI nanoseeds and the employment of single-mode microwave heating during membrane processing were found indispensable for the preparation of MFI zeolite membranes with superior butane isomer separation performance, thereby surpassing the current n-/i-butane selectivity versus n-butane permeance trade-off limits of MFI zeolite membranes prepared via solution-based synthetic protocols.
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Affiliation(s)
- Yi Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Linggong Road NO. 2, Ganjingzi District, Dalian, 116024, China
| | - Mingrun Li
- State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road NO. 457, Shahekou District, Dalian, 116023, China
| | - Zhigang Chen
- Vacuum Interconnected Nanotech Workstation, Suzhou Institute of NanoTech and NanoBionics, Chinese Academy of Sciences, 385 Ruoshui Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Yi Cui
- Vacuum Interconnected Nanotech Workstation, Suzhou Institute of NanoTech and NanoBionics, Chinese Academy of Sciences, 385 Ruoshui Road, Suzhou Industrial Park, Suzhou, 215123, China
| | - Jinming Lu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Linggong Road NO. 2, Ganjingzi District, Dalian, 116024, China
| | - Yi Liu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Linggong Road NO. 2, Ganjingzi District, Dalian, 116024, China
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33
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Liu Y, Li M, Chen Z, Cui Y, Lu J, Liu Y. Hierarchy Control of MFI Zeolite Membrane towards Superior Butane Isomer Separation Performance. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202017087] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yi Liu
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Linggong Road NO. 2, Ganjingzi District Dalian 116024 China
| | - Mingrun Li
- State Key Laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences Zhongshan Road NO. 457, Shahekou District Dalian 116023 China
| | - Zhigang Chen
- Vacuum Interconnected Nanotech Workstation Suzhou Institute of NanoTech and NanoBionics Chinese Academy of Sciences 385 Ruoshui Road, Suzhou Industrial Park Suzhou 215123 China
| | - Yi Cui
- Vacuum Interconnected Nanotech Workstation Suzhou Institute of NanoTech and NanoBionics Chinese Academy of Sciences 385 Ruoshui Road, Suzhou Industrial Park Suzhou 215123 China
| | - Jinming Lu
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Linggong Road NO. 2, Ganjingzi District Dalian 116024 China
| | - Yi Liu
- State Key Laboratory of Fine Chemicals School of Chemical Engineering Dalian University of Technology Linggong Road NO. 2, Ganjingzi District Dalian 116024 China
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34
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Liu J, McCool B, Johnson JR, Rangnekar N, Daoutidis P, Tsapatsis M. Mathematical modeling and parameter estimation of
MFI
membranes for para/ortho‐xylene separation. AIChE J 2021. [DOI: 10.1002/aic.17232] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Jingjun Liu
- Department of Chemical Engineering and Materials Science University of Minnesota Minneapolis Minnesota
- Department of Chemical Engineering Xi'an Jiaotong University Xi'an China
| | - Benjamin McCool
- Corporate Strategic Research ExxonMobil Research and Engineering Annandale New Jersey
| | - J. R. Johnson
- Corporate Strategic Research ExxonMobil Research and Engineering Annandale New Jersey
| | - Neel Rangnekar
- Corporate Strategic Research ExxonMobil Research and Engineering Annandale New Jersey
| | - Prodromos Daoutidis
- Department of Chemical Engineering and Materials Science University of Minnesota Minneapolis Minnesota
| | - Michael Tsapatsis
- Department of Chemical Engineering and Materials Science University of Minnesota Minneapolis Minnesota
- Department of Chemical and Biomolecular Engineering Institute for NanoBioTechnology Johns Hopkins University Baltimore Maryland
- Applied Physics Laboratory Johns Hopkins University Laurel Maryland
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35
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Castro-Muñoz R, Boczkaj G. Pervaporation Zeolite-Based Composite Membranes for Solvent Separations. Molecules 2021; 26:1242. [PMID: 33669135 PMCID: PMC7956589 DOI: 10.3390/molecules26051242] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2021] [Revised: 02/19/2021] [Accepted: 02/22/2021] [Indexed: 11/26/2022] Open
Abstract
Thanks to their well-defined molecular sieving and stability, zeolites have been proposed in selective membrane separations, such as gas separation and pervaporation. For instance, the incorporation of zeolites into polymer phases to generate composite (or mixed matrix) membranes revealed important advances in pervaporation. Therefore, the goal of this review is to compile and elucidate the latest advances (over the last 2-3 years) of zeolite applications in pervaporation membranes either combining zeolites or polymers. Here, particular emphasis has been focused on relevant insights and findings in using zeolites in pervaporative azeotropic separations and specific aided applications, together with novel concepts of membranes. A brief background of the pervaporation process is also given. According to the findings of this review, we provide future perspectives and recommendations for new researchers in the field.
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Affiliation(s)
- Roberto Castro-Muñoz
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland;
- Tecnologico de Monterrey, Campus Toluca, Avenida Eduardo Monroy Cárdenas 2000, San Antonio Buenavista, Toluca de Lerdo 50110, Mexico
| | - Grzegorz Boczkaj
- Department of Process Engineering and Chemical Technology, Faculty of Chemistry, Gdansk University of Technology, 11/12 Narutowicza St., 80-233 Gdansk, Poland;
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36
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Dai W, Kouvatas C, Tai W, Wu G, Guan N, Li L, Valtchev V. Platelike MFI Crystals with Controlled Crystal Faces Aspect Ratio. J Am Chem Soc 2021; 143:1993-2004. [PMID: 33464884 DOI: 10.1021/jacs.0c11784] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Zeolite crystals offering a short diffusion pathway through the pore network are highly desired for a number of catalytic and molecule separation applications. Herein, we develop a simple synthetic strategy toward reducing the thickness along the b-axis of MFI-type crystals, thus providing a short diffusion path along the straight channel. Our approach combines preliminary aging and a fluoride-assisted low-temperature crystallization. The synthesized MFI crystals are in the micrometer-size range along the a- and c-axis, while the thickness along the b-axis is a few tens of nanometers. The synthesis parameters controlling the formation of platelike zeolite are studied, and the factors controlling the zeolite growth are identified. The synthesis strategy works equally well with all-silica MFI (silicalite-1) and its Al- and Ga-containing derivatives. The catalytic activity of platelike ZSM-5 in the methanol-to-hydrocarbons (MTH) reaction is compared with a commercial nanosized ZSM-5 sample, as the platelike ZSM-5 exhibits a substantially extended lifetime. The synthesis of platelike MFI crystals is successfully scaled up to a kilogram scale.
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Affiliation(s)
- Weijiong Dai
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, P. R. China.,Normandie Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Cassandre Kouvatas
- Normandie Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, 6 Boulevard Maréchal Juin, 14050 Caen, France
| | - Wenshu Tai
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, P. R. China
| | - Guangjun Wu
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, P. R. China
| | - Naijia Guan
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, P. R. China
| | - Landong Li
- School of Materials Science and Engineering & National Institute for Advanced Materials, Nankai University, Tianjin 300350, P. R. China
| | - Valentin Valtchev
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, Qingdao, Shandong 266101, P. R. China.,Normandie Univ, ENSICAEN, UNICAEN, CNRS, Laboratoire Catalyse et Spectrochimie, 6 Boulevard Maréchal Juin, 14050 Caen, France
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37
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Fu L, Yang Z, Wang Y, Li R, Zhai J. Construction of Metal‐Organic Frameworks (MOFs)–Based Membranes and Their Ion Transport Applications. SMALL SCIENCE 2021. [DOI: 10.1002/smsc.202000035] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Affiliation(s)
- Lulu Fu
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Chemistry Beihang University Beijing 100191 P. R. China
| | - Zhao Yang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Chemistry Beihang University Beijing 100191 P. R. China
| | - Yuting Wang
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Chemistry Beihang University Beijing 100191 P. R. China
| | - Ruirui Li
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Chemistry Beihang University Beijing 100191 P. R. China
- School of Energy and Power Engineering Beihang University Beijing 100191 P. R. China
| | - Jin Zhai
- Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Chemistry Beihang University Beijing 100191 P. R. China
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38
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Hong S, Jeong Y, Baik H, Choi N, Yip ACK, Choi J. An Extrinsic-Pore-Containing Molecular Sieve Film: A Robust, High-Throughput Membrane Filter. Angew Chem Int Ed Engl 2021; 60:1323-1331. [PMID: 33026162 DOI: 10.1002/anie.202010957] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/29/2020] [Indexed: 11/11/2022]
Abstract
MFI type zeolites with 10-membered-ring pores (ca. 0.55 nm) have the ability to separate p-xylene (ca. 0.58 nm) from its bulkier isomers. Here, we introduced non-zeolitic micropores (ca. 0.6-1.5 nm) and mesopores (ca. 2-7 nm) to a conventional microporous MFI type zeolite membrane, yielding an unprecedented hierarchical membrane structure. The uniform, embedded non-zeolitic pores decreased defect formation considerably and facilitated molecular transport, resulting in high p-xylene perm-selectivity and molar flux. Specifically, compared to a conventional, crack network-containing MFI membranes of similar thickness (ca. 1 μm), the mesoporous MFI membranes showed almost double p-xylene permeance (ca. 1.6±0.4×10-7 mol m-2 s-1 Pa-1 ) and a high p-/o-xylene separation factor (ca. 53.8±7.3 vs. 3.5±0.5 in the conventional MFI membrane) at 225 °C. The embedded non-zeolitic pores allowed for decreasing the separation performance degradation, which was apparently related to coke formation.
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Affiliation(s)
- Sungwon Hong
- Department of Chemical & Biological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Yanghwan Jeong
- Department of Chemical & Biological Engineering, Korea University, Seoul, 02841, Republic of Korea
| | - Hionsuck Baik
- Korea Basic Science Institute (KBSI) Seoul Center, Seoul, 02841, Republic of Korea
| | - Nakwon Choi
- Center for BioMicrosystems, Brain Science Institute, Korea Institute of Science and Technology (KIST), Seoul, 02792, Republic of Korea.,KU-KIST Graduate School of Converging Science and Technology, Korea University, Seoul, 02841, Republic of Korea
| | - Alex C K Yip
- Chemical and Process Engineering, University of Canterbury, Christchurch, 8140, New Zealand
| | - Jungkyu Choi
- Department of Chemical & Biological Engineering, Korea University, Seoul, 02841, Republic of Korea
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39
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Feng H, Luo Y, Liu M, Chen Q, Tao Z, Xiao X. A facile cucurbit[8]uril-based porous assembly: utilization in the adsorption of drugs and their controlled release. NEW J CHEM 2021. [DOI: 10.1039/d1nj04749c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Cucurbit[n]urils (Q[n]s) are essential members of the supramolecular organic framework family owing to their distinct structure.
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Affiliation(s)
- Huaming Feng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Yang Luo
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Ming Liu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Qing Chen
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Guizhou University, Guiyang, 550025, China
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40
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Dou H, Xu M, Wang B, Zhang Z, Wen G, Zheng Y, Luo D, Zhao L, Yu A, Zhang L, Jiang Z, Chen Z. Microporous framework membranes for precise molecule/ion separations. Chem Soc Rev 2020; 50:986-1029. [PMID: 33226395 DOI: 10.1039/d0cs00552e] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Microporous framework membranes such as metal-organic framework (MOF) membranes and covalent organic framework (COF) membranes are constructed by the controlled growth of small building blocks with large porosity and permanent well-defined micropore structures, which can overcome the ubiquitous tradeoff between membrane permeability and selectivity; they hold great promise for the enormous challenging separations in energy and environment fields. Therefore, microporous framework membranes are endowed with great expectations as next-generation membranes, and have evolved into a booming research field. Numerous novel membrane materials, versatile manipulation strategies of membrane structures, and fascinating applications have erupted in the last five years. First, this review summarizes and categorizes the microporous framework membranes with pore sizes lower than 2 nm based on their chemistry: inorganic microporous framework membranes, organic-inorganic microporous framework membranes, and organic microporous framework membranes, where the chemistry, fabrications, and differences among these membranes have been highlighted. Special attention is paid to the membrane structures and their corresponding modifications, including pore architecture, intercrystalline grain boundary, as well as their diverse control strategies. Then, the separation mechanisms of membranes are covered, such as diffusion-selectivity separation, adsorption-selectivity separation, and synergetic adsorption-diffusion-selectivity separation. Meanwhile, intricate membrane design to realize synergistic separation and some emerging mechanisms are highlighted. Finally, the applications of microporous framework membranes for precise gas separation, liquid molecule separation, and ion sieving are summarized. The remaining challenges and future perspectives in this field are discussed. This timely review may provide genuine guidance on the manipulation of membrane structures and inspire creative designs of novel membranes, promoting the sustainable development and steadily increasing prosperity of this field.
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Affiliation(s)
- Haozhen Dou
- Department of Chemical Engineering, University of Waterloo, 200 University Ave. W, Waterloo, Ontario N2L 3G1, Canada
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41
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Hong S, Jeong Y, Baik H, Choi N, Yip ACK, Choi J. An Extrinsic‐Pore‐Containing Molecular Sieve Film: A Robust, High‐Throughput Membrane Filter. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202010957] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sungwon Hong
- Department of Chemical & Biological Engineering Korea University Seoul 02841 Republic of Korea
| | - Yanghwan Jeong
- Department of Chemical & Biological Engineering Korea University Seoul 02841 Republic of Korea
| | - Hionsuck Baik
- Korea Basic Science Institute (KBSI) Seoul Center Seoul 02841 Republic of Korea
| | - Nakwon Choi
- Center for BioMicrosystems Brain Science Institute Korea Institute of Science and Technology (KIST) Seoul 02792 Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology Korea University Seoul 02841 Republic of Korea
| | - Alex C. K. Yip
- Chemical and Process Engineering University of Canterbury Christchurch 8140 New Zealand
| | - Jungkyu Choi
- Department of Chemical & Biological Engineering Korea University Seoul 02841 Republic of Korea
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42
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Formation Process of Columnar Grown (101)-Oriented Silicalite-1 Membrane and Its Separation Property for Xylene Isomer. CRYSTALS 2020. [DOI: 10.3390/cryst10100949] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Silicalite-1 membrane was prepared on an outer surface of a tubular α-alumina support by a secondary growth method. Changes of defect amount and crystallinity during secondary growth were carefully observed. The defect-less well-crystallized silicalite-1 membrane was obtained after 7-days crystallization at 373 K. The silicalite-1 membrane became (h0l)-orientation with increasing membrane thickness, possibly because the orientation was attributable to “evolutionally selection”. The (h0l)-oriented silicalite-1 membrane showed high p-xylene separation performance for a xylene isomer mixture (o-/m-/p-xylene = 0.4/0.4/0.4 kPa). The p-xylene permeance through the membrane was 6.52 × 10−8 mol m−2 s−1 Pa−1 with separation factors αp/o, αp/m of more than 100 at 373 K. As a result of microscopic analysis, it was suggested that a very thin part in the vicinity of surface played as effective separation layer and could contribute to high permeation performance.
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43
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44
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Wang B, Wu T, Yu M, Li S, Zhou R, Xing W. Highly Ordered Nanochannels in a Nanosheet-Directed Thin Zeolite Nanofilm for Precise and Fast CO 2 Separation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002836. [PMID: 32964691 DOI: 10.1002/smll.202002836] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 07/20/2020] [Indexed: 06/11/2023]
Abstract
Precise molecular and ion separations depend largely on the size and uniformity of the nanochannels in a defect-free microporous nanofilm. Ordered and perpendicular nanochannels with uniform pore size are assembled into a continuous and defect-free film by a "gel nuclei-less" route. The ultrathin (<50 nm) zeolite nanosheets seeding layer induces the formation of defect-free zeolite nanofilms (500-800 nm) with preferential [100] orientation well-aligned to the transport pathway. The large-area and thin silicoaluminophosphate-34 (SAPO-34) nanofilm consisting of uniform and straight nanochannels shows a milestone CO2 permeance of ≈1.0 × 10-5 mol (m2 s Pa)-1 and high CO2 /CH4 and CO2 /N2 selectivities of 135 and 41 in equimolar binary mixtures at room temperature and 0.2 MPa feed pressure, respectively. These results suggest that highly oriented and thin SAPO-34 nanofilms prepared from nanosheets might have great potential for CO2 capture from natural gas, biogas, and flue gas.
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Affiliation(s)
- Bin Wang
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Tangyin Wu
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Miao Yu
- Department of Chemical and Biological Engineering, Rensselaer Polytechnic Institute, Troy, NY, 12180, USA
| | - Shiguang Li
- Gas Technology Institute, 1700 South Mount Prospect Road, Des Plaines, IL, 60018, USA
| | - Rongfei Zhou
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
| | - Weihong Xing
- State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, 210009, P. R. China
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45
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Min B, Korde A, Yang S, Kim Y, Jones CW, Nair S. Separation of
C
2
–C
4
hydrocarbons from methane by zeolite
MFI
hollow fiber membranes fabricated from
2D
nanosheets. AIChE J 2020. [DOI: 10.1002/aic.17048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Byunghyun Min
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Akshay Korde
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Shaowei Yang
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Youngjo Kim
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Christopher W. Jones
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
| | - Sankar Nair
- School of Chemical & Biomolecular Engineering Georgia Institute of Technology Atlanta Georgia USA
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46
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Iyer GM, Liu L, Zhang C. Hydrocarbon separations by glassy polymer membranes. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200128] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Gaurav M. Iyer
- Department of Chemical and Biomolecular Engineering University of Maryland College Park MD USA
| | - Lu Liu
- Department of Chemical and Biomolecular Engineering University of Maryland College Park MD USA
| | - Chen Zhang
- Department of Chemical and Biomolecular Engineering University of Maryland College Park MD USA
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47
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Carpena-Núñez J, Rao R, Kim D, Bets KV, Zakharov DN, Boscoboinik JA, Stach EA, Yakobson BI, Tsapatsis M, Stacchiola D, Maruyama B. Zeolite Nanosheets Stabilize Catalyst Particles to Promote the Growth of Thermodynamically Unfavorable, Small-Diameter Carbon Nanotubes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2020; 16:e2002120. [PMID: 32812375 DOI: 10.1002/smll.202002120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2020] [Revised: 06/19/2020] [Indexed: 06/11/2023]
Abstract
A challenge in the synthesis of single-wall carbon nanotubes (SWCNTs) is the lack of control over the formation and evolution of catalyst nanoparticles and the lack of control over their size or chirality. Here, zeolite MFI nanosheets (MFI-Ns) are used to keep cobalt (Co) nanoparticles stable during prolonged annealing conditions. Environmental transmission electron microscopy (ETEM) shows that the MFI-Ns can influence the size and shape of nanoparticles via particle/support registry, which leads to the preferential docking of nanoparticles to four or fewer pores and to the regulation of the SWCNT synthesis products. The resulting SWCNT population exhibits a narrow diameter distribution and SWCNTs of nearly all chiral angles, including sub-nm zigzag (ZZ) and near-ZZ tubes. Theoretical simulations reveal that the growth of these unfavorable tubes from unsupported catalysts leads to the rapid encapsulation of catalyst nanoparticles bearing them; their presence in the growth products suggests that the MFI-Ns prevent nanoparticle encapsulation and prologue ZZ and near-ZZ SWCNT growth. These results thus present a path forward for controlling nanoparticle formation and evolution, for achieving size- and shape-selectivity at high temperature, and for controlling SWCNT synthesis.
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Affiliation(s)
- Jennifer Carpena-Núñez
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, 45433, USA
- UES, Inc., Dayton, OH, 45432, USA
| | - Rahul Rao
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, 45433, USA
- UES, Inc., Dayton, OH, 45432, USA
| | - Donghun Kim
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, 55455, USA
- School of Chemical Engineering, Chonnam National University, Buk-gu, Gwangju, 61186, Republic of Korea
| | - Ksenia V Bets
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
| | - Dmitri N Zakharov
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - J Anibal Boscoboinik
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Eric A Stach
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Boris I Yakobson
- Department of Materials Science and NanoEngineering, Rice University, Houston, TX, 77005, USA
- Department of Chemistry, Rice University, Houston, TX, 77005, USA
- Smalley-Curl Institute for Nanoscale Science and Technology, Rice University, Houston, TX, 77005, USA
| | - Michael Tsapatsis
- Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN, 55455, USA
- Applied Physics Laboratory, John Hopkins University, Laurel, MB, 20723, USA
- Department of Chemical and Biomolecular Engineering & Institute for NanoBioTechnology, Johns Hopkins University, Baltimore, MD, 21218, USA
| | - Dario Stacchiola
- Center for Functional Nanomaterials, Brookhaven National Laboratory, Upton, NY, 11973, USA
| | - Benji Maruyama
- Materials and Manufacturing Directorate, Air Force Research Laboratory, Wright-Patterson Air Force Base, Dayton, OH, 45433, USA
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48
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Wu J, Yang Y. Synthetic Macrocycle‐Based Nonporous Adaptive Crystals for Molecular Separation. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006999] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Jia‐Rui Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC) College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
| | - Ying‐Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC) College of Chemistry Jilin University 2699 Qianjin Street Changchun 130012 P. R. China
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49
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Wu JR, Yang YW. Synthetic Macrocycle-Based Nonporous Adaptive Crystals for Molecular Separation. Angew Chem Int Ed Engl 2020; 60:1690-1701. [PMID: 32634274 DOI: 10.1002/anie.202006999] [Citation(s) in RCA: 81] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2020] [Indexed: 12/13/2022]
Abstract
The exploitation of new materials for adsorptive separation of industrially important hydrocarbons is of great importance in both scientific research and petrochemical industry. Nonporous adaptive crystals (NACs) as a robust class of synthetic materials have drawn much attention during the past five years for their superior performance in adsorption and separation. Pillararenes are the main family of macrocyclic arenes used for NACs construction, where the structure-function relationship has been intensively studied. In the past two years, some emerging types of synthetic macrocyclic arenes have been successfully brought into this research field, showing the gradual enrichment and diversification of NACs materials. This Minireview summarizes the recent advances of synthetic macrocycle-based NACs, which are categorized by various practical applications in molecular separation. Besides, NACs-based vapochromic supramolecular systems are also discussed. Finally, future perspectives and challenges of NACs are given. We envisage that this Minireview will be a useful and timely reference for those who are interested in new molecular and supramolecular crystals for storage and separation applications.
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Affiliation(s)
- Jia-Rui Wu
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
| | - Ying-Wei Yang
- State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, International Joint Research Laboratory of Nano-Micro Architecture Chemistry (NMAC), College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun, 130012, P. R. China
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50
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Dementyev P, Naberezhnyi D, Westphal M, Buck M, Gölzhäuser A. Carbon Nanomembranes from Aromatic Carboxylate Precursors. Chemphyschem 2020; 21:1006-1011. [PMID: 32202365 PMCID: PMC7317367 DOI: 10.1002/cphc.202000150] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 03/19/2020] [Indexed: 12/02/2022]
Abstract
Self-assembled monolayers (SAMs) serve as convenient platform for fabricating carbon nanomembranes (CNMs) of extended lateral dimensions. Highly porous CNMs are emerging as interesting materials for membrane technologies as they exhibit selectivity for water permeation and, owing to their reduced dimensionality, promise increased energy efficiency compared to established systems. In the present study terphenylcarboxylate SAMs, prepared on silver underpotential deposited on Au and irradiated by 100 eV electrons, were successfully converted into free-standing CNMs. Infrared and X-ray photoelectron spectroscopy reveal pronounced chemical changes both of the anchoring carboxylate moiety and the aromatic backbone upon electron irradiation. Permeation studies showed high specificity for water as demonstrated by the separation from tetrahydrofuran. Compared to thiols on gold, the standard CNM precursor system, the carboxylic acid based SAM exhibits equivalent characteristics. This suggests that electron-induced carbonization is insensitive to the particular choice of the anchor moiety and, therefore, the choice of precursor molecules can be extended to the versatile class of aromatic carboxylic acids.
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Affiliation(s)
- Petr Dementyev
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | - Daniil Naberezhnyi
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | - Michael Westphal
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
| | - Manfred Buck
- EaStCHEM School of ChemistryUniversity of St Andrews North HaughSt AndrewsKY16 9STU.K.
| | - Armin Gölzhäuser
- Physics of Supramolecular Systems and SurfacesBielefeld UniversityUniversitätsstr. 2533615BielefeldGermany
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