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Mousavi SH, Chen K, Yao J, Zavabeti A, Liu JZ, Li GK. Screening of Alkali Metal-Exchanged Zeolites for Nitrogen/Methane Separation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1277-1287. [PMID: 36626709 DOI: 10.1021/acs.langmuir.2c03089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
Methane (CH4) is the primary component of natural gas and must be purified to a certain level before it can be used as pipeline gas or liquified natural gas (LNG). In particular, nitrogen (N2), a common contaminant in natural gas needs to be rejected to increase the heating value of the gas and meet the LNG product specifications. The development of energy-efficient N2 removal technologies is hampered by N2's inertness and its resemblance to CH4 in terms of kinetic size and polarizability. N2-selective materials are so rare. Here, for the first time, we screened 1425 alkali metal cation exchange zeolites to identify the candidates with the best potential for the separation of N2 from CH4. We discovered a few extraordinary zeolite frameworks capable of achieving equilibrium selectivity toward N2. Particularly, Li+-RRO-3 zeolite with a specific two-dimensional structure demonstrated a selective N2 adsorption capacity of 2.94 mmol/g at 283 K and 1 bar, outperforming the capacity of all known zeolites. Through an ab initio density functional theory study, we found that the five-membered ring of the RRO framework is the most stable cationic site for Li+, and this Li+ can interact with multiple N2 molecules but only one CH4, revealing the mechanism for the high capacity and selectivity of N2. This work suggests promising adsorbents to enable N2 rejection from CH4 in the gas industry without going for energy-intensive cryogenic distillations.
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Affiliation(s)
- Seyed Hesam Mousavi
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Kaifei Chen
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Jie Yao
- Department of Applied Chemistry, School of Engineering, University of Toyama, Toyama 930-8555, Japan
| | - Ali Zavabeti
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Jefferson Zhe Liu
- Department of Mechanical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
| | - Gang Kevin Li
- Department of Chemical Engineering, The University of Melbourne, Parkville, Victoria 3010, Australia
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Understanding CO2 adsorption in a flexible zeolite through a combination of structural, kinetic and modelling techniques. Sep Purif Technol 2021. [DOI: 10.1016/j.seppur.2020.117846] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Cheung O, Bacsik Z, Fil N, Krokidas P, Wardecki D, Hedin N. Selective Adsorption of CO 2 on Zeolites NaK-ZK-4 with Si/Al of 1.8-2.8. ACS OMEGA 2020; 5:25371-25380. [PMID: 33043217 PMCID: PMC7542833 DOI: 10.1021/acsomega.0c03749] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Accepted: 09/11/2020] [Indexed: 06/11/2023]
Abstract
Zeolites with appropriately narrow pore apertures can kinetically enhance the selective adsorption of CO2 over N2. Here, we showed that the exchangeable cations (e.g., Na+ or K+) on zeolite ZK-4 play an important role in the CO2 selectivity. Zeolites NaK ZK-4 with Si/Al = 1.8-2.8 had very high CO2 selectivity when an intermediate number of the exchangeable cations were K+ (the rest being Na+). Zeolites NaK ZK-4 with Si/Al = 1.8 had high CO2 uptake capacity and very high CO2-over-N2 selectivity (1190). Zeolite NaK ZK-4 with Si/Al = 2.3 and 2.8 also had enhanced CO2 selectivity with an intermediate number of K+ cations. The high CO2 selectivity was related to the K+ cation in the 8-rings of the α-cage, together with Na+ cations in the 6-ring, obstructing the diffusion of N2 throughout the zeolite. The positions of the K+ cation in the 8-ring moved slightly (max 0.2 Å) toward the center of the α-cage upon the adsorption of CO2, as revealed by in situ X-ray diffraction. The CO2-over-N2 selectivity was somewhat reduced when the number of K+ cations approached 100%. This was possibly due to the shift in the K+ cation positions in the 8-ring when the number of Na+ was going toward 0%, allowing N2 diffusion through the 8-ring. According to in situ infrared spectroscopy, the amount of chemisorbed CO2 was reduced on zeolite ZK-4s with increasing Si/Al ratio. In the context of potential applications, a kinetically enhanced selection of CO2 could be relevant for applications in carbon capture and bio- and natural gas upgrading.
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Affiliation(s)
- Ocean Cheung
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE 106 91, Sweden
- Nanotechnology
and Functional Materials, Department of Materials Science and Engineering, Uppsala University, Uppsala SE 75121, Sweden
| | - Zoltán Bacsik
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE 106 91, Sweden
| | - Nicolas Fil
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE 106 91, Sweden
| | - Panagiotis Krokidas
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE 106 91, Sweden
- Institute
of Nanoscience and Nanotechnology, National
Centre for Scientific Research “Demokritos”, Aghia Paraskevi, Attikis, Athens GR-15310, Greece
| | - Dariusz Wardecki
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE 106 91, Sweden
- Department
of Chemistry and Chemical Engineering, Chalmers
University of Technology, Gothenburg SE 412 96, Sweden
- Institute
of Experimental Physics, Faculty of Physics, University of Warsaw, Pasteura 5, Warsaw 02-093, Poland
| | - Niklas Hedin
- Department
of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, Stockholm SE 106 91, Sweden
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Sato S, Saita K, Sekizawa K, Maeda S, Morikawa T. Low-Energy Electrocatalytic CO2 Reduction in Water over Mn-Complex Catalyst Electrode Aided by a Nanocarbon Support and K+ Cations. ACS Catal 2018. [DOI: 10.1021/acscatal.8b01068] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Shunsuke Sato
- Toyota Central R&D Laboratories., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Kenichiro Saita
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - Keita Sekizawa
- Toyota Central R&D Laboratories., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
| | - Satoshi Maeda
- Department of Chemistry, Faculty of Science, Hokkaido University, Kita 10, Nishi 8, Kita-ku, Sapporo 060-0810, Japan
| | - Takeshi Morikawa
- Toyota Central R&D Laboratories., Inc., 41-1 Yokomichi, Nagakute, Aichi 480-1192, Japan
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Besser B, Tajiri HA, Mikolajczyk G, Möllmer J, Schumacher TC, Odenbach S, Gläser R, Kroll S, Rezwan K. Hierarchical Porous Zeolite Structures for Pressure Swing Adsorption Applications. ACS APPLIED MATERIALS & INTERFACES 2016; 8:3277-86. [PMID: 26760054 DOI: 10.1021/acsami.5b11120] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
Porous adsorbents with hierarchical structured macropores ranging from 1 to 100 μm are prepared using a combination of freeze casting and additional sacrificial templating of polyurethane foams, with a zeolite 13X powder serving as adsorbent. The pore system of the prepared monoliths features micropores assigned to the zeolite 13X particle framework, interparticular pores of ∼1-2 μm, lamellar pores derived from freeze casting of ∼10 μm, and an interconnected pore network obtained from the sacrificial templates ranging from around 100 to 200 μm with a total porosity of 71%. Gas permeation measurements show an increase in intrinsic permeability by a factor of 14 for monoliths prepared with an additional sacrificial templated foam compared to monoliths solely providing freeze casting pores. Cyclic CO2 adsorption and desorption tests where pressure swings between 8 and 140 kPa reveal constant working capacities over multiple cycles. Furthermore, the monoliths feature a high volumetric working capacity of ∼1.34 mmol/cm(3) which is competitive to packed beds made of commercially available zeolite 13X beads (∼1.28 mmol/cm(3)). Combined with the faster CO2 uptake showing an adsorption of 50% within 5-8 s (beads ∼10 s), the monoliths show great potential for pressure swing adsorption applications, where high volumetric working capacities, fast uptakes, and low pressure drops are needed for a high system performance.
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Affiliation(s)
- Benjamin Besser
- Advanced Ceramics, University of Bremen , Am Biologischen Garten 2, 28359 Bremen, Germany
| | - Henrique Akira Tajiri
- Advanced Ceramics, University of Bremen , Am Biologischen Garten 2, 28359 Bremen, Germany
| | - Gerd Mikolajczyk
- Institute of Fluid Mechanics, Dresden University of Technology , George-Bähr-Straße 3, 01062 Dresden, Germany
| | - Jens Möllmer
- Institut für Nichtklassische Chemie e.V and der Universität Leipzig , Permoserstraße 15, 04318 Leipzig, Germany
| | - Thomas C Schumacher
- Advanced Ceramics, University of Bremen , Am Biologischen Garten 2, 28359 Bremen, Germany
| | - Stefan Odenbach
- Institute of Fluid Mechanics, Dresden University of Technology , George-Bähr-Straße 3, 01062 Dresden, Germany
| | - Roger Gläser
- Institut für Nichtklassische Chemie e.V and der Universität Leipzig , Permoserstraße 15, 04318 Leipzig, Germany
| | - Stephen Kroll
- Advanced Ceramics, University of Bremen , Am Biologischen Garten 2, 28359 Bremen, Germany
- Centre for Materials and Processes (MAPEX), University of Bremen , Bibliothekstraße 1, 28359 Bremen, Germany
| | - Kurosch Rezwan
- Advanced Ceramics, University of Bremen , Am Biologischen Garten 2, 28359 Bremen, Germany
- Centre for Materials and Processes (MAPEX), University of Bremen , Bibliothekstraße 1, 28359 Bremen, Germany
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Cheung O, Zhang P, Frykstrand S, Zheng H, Yang T, Sommariva M, Zou X, Strømme M. Nanostructure and pore size control of template-free synthesised mesoporous magnesium carbonate. RSC Adv 2016. [DOI: 10.1039/c6ra14171d] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The structure of mesoporous magnesium carbonate (MMC) first presented in 2013 is investigated using a bottom-up approach.
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Affiliation(s)
- Ocean Cheung
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
| | - Peng Zhang
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
| | - Sara Frykstrand
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
| | - Haoquan Zheng
- Department of Materials and Environmental Chemistry
- Stockholm University
- Stockholm
- Sweden
| | - Taimin Yang
- Department of Materials and Environmental Chemistry
- Stockholm University
- Stockholm
- Sweden
| | | | - Xiaodong Zou
- Department of Materials and Environmental Chemistry
- Stockholm University
- Stockholm
- Sweden
| | - Maria Strømme
- Division for Nanotechnology and Functional Materials
- Department of Engineering Sciences
- Uppsala University
- Uppsala
- Sweden
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Mace A, Leetmaa M, Laaksonen A. Temporal Coarse Graining of CO2 and N2 Diffusion in Zeolite NaKA: From the Quantum Scale to the Macroscopic. J Chem Theory Comput 2015; 11:4850-60. [DOI: 10.1021/acs.jctc.5b00401] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Amber Mace
- Department
of Materials and Environmental Chemistry and Berzelii Centre EXSELENT
on Porous Materials, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Mikael Leetmaa
- Department
of Physics and Astronomy, Uppsala University, Box 516, SE-751 20 Uppsala, Sweden
| | - Aatto Laaksonen
- Department
of Materials and Environmental Chemistry and Berzelii Centre EXSELENT
on Porous Materials, Stockholm University, SE-106 91 Stockholm, Sweden
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Palomino Cabello C, Arean CO, Parra JB, Ania CO, Rumori P, Turnes Palomino G. A rapid microwave-assisted synthesis of a sodium–cadmium metal–organic framework having improved performance as a CO2 adsorbent for CCS. Dalton Trans 2015; 44:9955-63. [DOI: 10.1039/c5dt00909j] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A very stable sodium–cadmium metal–organic framework with high volumetric CO2 adsorption capacity and selectivity has been prepared by a fast and easy microwave-assisted method.
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Affiliation(s)
| | - Carlos Otero Arean
- Department of Chemistry
- University of the Balearic Islands
- 07122 Palma de Mallorca
- Spain
| | - José B. Parra
- Instituto Nacional del Carbón
- INCAR-CSIC
- 33080 Oviedo
- Spain
| | - Conchi O. Ania
- Instituto Nacional del Carbón
- INCAR-CSIC
- 33080 Oviedo
- Spain
| | - P. Rumori
- Department of Chemistry
- University of the Balearic Islands
- 07122 Palma de Mallorca
- Spain
| | - G. Turnes Palomino
- Department of Chemistry
- University of the Balearic Islands
- 07122 Palma de Mallorca
- Spain
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Conato MT, Oleksiak MD, Peter McGrail B, Motkuri RK, Rimer JD. Framework stabilization of Si-rich LTA zeolite prepared in organic-free media. Chem Commun (Camb) 2014; 51:269-72. [PMID: 25347029 DOI: 10.1039/c4cc07396g] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Zeolite HOU-2 (LTA type) is prepared with the highest silica content (Si/Al = 2.1) reported for Na-LTA zeolites without the use of an organic structure-directing agent. The rational design of Si-rich zeolites has the potential to improve their thermal stability for applications in catalysis, gas storage, and selective separations.
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Affiliation(s)
- Marlon T Conato
- University of Houston, Department of Chemical and Biomolecular Engineering, 4800 Calhoun Rd., Houston, TX 77204, USA.
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