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Cheng J, Hua X, Zhang G, Yu M, Wang Z, Zhang Y, Liu W, Chen Y, Wang H, Luo Y, Hou X, Xie X. Synthesis of high-crystallinity Zeolite A from rare earth tailings: Investigating adsorption performance on typical pollutants in rare earth mines. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133730. [PMID: 38368681 DOI: 10.1016/j.jhazmat.2024.133730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2023] [Revised: 01/20/2024] [Accepted: 02/04/2024] [Indexed: 02/20/2024]
Abstract
The ecological restoration of rare earth mines and the management of rare earth tailings have consistently posed global challenges, constraining the development of the rare earth industry. In this study, Zeolite A is efficiently prepared from the tailings of an ion-type rare earth mine in the southern Jiangxi Province of China. The resulting Zeolite A boasts exceptional qualities, including high crystallinity, a substantial specific surface area, and robust thermal stability. The optimum conditions for Zeolite synthesis are experimental determination and the adsorption properties of Zeolite A for typical pollutants (Cd2+, Cu2+, NH4+, PO43- and F-) in rare earth mines. The synthesised Zeolite A material is found to have strong adsorption properties. The adsorption mechanism is mainly cation exchange, and the priority of adsorption of pollutants is Cu2+> Cd2+ > NH4+ > PO43- > F-. Notably, the sodium Zeolite A material synthesized at room temperature can be effectively recycled multiple times. In summary, we propose a method to synthesise low cost and high adsorption zeolites using rare earth tailings. This will facilitate the reduction of rare earth tailings and the rehabilitation of rare earth mines. Our method has great potential as a rehabilitation technology for rare earth mines.
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Affiliation(s)
- Jiancheng Cheng
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Xinlong Hua
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Guihai Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Mengqin Yu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Zhu Wang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Yalan Zhang
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Wei Liu
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Yuejin Chen
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China
| | - Huiming Wang
- Jiangsu Fuhuan Environmental Science and Technology Co., LTD., Nanjing City, Jiangsu Province 210000, China
| | - Yidan Luo
- Key Laboratory for Microstructural Control of Metallic Materials of Jiangxi Province, School of Materials Science and Engineering, Nanchang Hangkong University, Nanchang 330063, China
| | - Xuechao Hou
- Power China Jiangxi Electric Power Engineering Co., LTD., Nanchang City, Jiangxi Province 330031, China
| | - Xianchuan Xie
- Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, School of Resource and Environment, Nanchang University, Nanchang 330031, China; Jiangxi Nanxin Environmental Protection Technology Co. LTD, Jiujiang City, Jiangxi Province 330300, China.
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Dong Z, Zhang E, Jiang Y, Zhang Q, Mayoral A, Jiang H, Ma Y. Atomic-Level Imaging of Zeolite Local Structures Using Electron Ptychography. J Am Chem Soc 2023; 145:6628-6632. [PMID: 36877580 DOI: 10.1021/jacs.2c12673] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Zeolites are among the most important heterogeneous catalysts, widely employed in separation reaction, fine chemical production, and petroleum refining. Through rational design of the frameworks, zeolites with versatile functions can be synthesized. Local imaging of zeolite structures at the atomic scale, including the basic framework atoms (Si, Al, and O) and extra-framework cations, is necessary to understand the structure-function relationship of zeolites. Herein, we implemented electron ptychography into direct imaging of local structures of two zeolites, Na-LTA and ZSM-5. Not only all the framework atoms but also extra-framework Na+ cations with only 1/4 occupation probabilities in Na-LTA were directly observed. Local structures of ZSM-5 zeolites having guest molecules among channels with different orientations were also unraveled using different reconstruction algorithms. The approach presented here provides a new way to locally image zeolites structure, and it is expected to be an essential key for further studying and tuning zeolites active sites at the atomic level.
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Affiliation(s)
- Zhuoya Dong
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China.,Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Enci Zhang
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Yilan Jiang
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Qing Zhang
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Alvaro Mayoral
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China.,Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Huaidong Jiang
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China.,Center for Transformative Science, ShanghaiTech University, Shanghai 201210, P. R. China
| | - Yanhang Ma
- School of Physical Science and Technology & Shanghai Key Laboratory of High-resolution Electron Microscopy, ShanghaiTech University, Shanghai 201210, P. R. China
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Moradi H, Azizpour H, Bahmanyar H, Emamian M. Molecular dynamic simulation of carbon dioxide, methane, and nitrogen adsorption on Faujasite zeolite. Chin J Chem Eng 2021. [DOI: 10.1016/j.cjche.2021.05.034] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Liu Y, Wu Y, Liang W, Peng J, Li Z, Wang H, Janik MJ, Xiao J. Bimetallic ions regulate pore size and chemistry of zeolites for selective adsorption of ethylene from ethane. Chem Eng Sci 2020. [DOI: 10.1016/j.ces.2020.115636] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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5
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Narang K, Akhtar F. Freeze Granulated Zeolites X and A for Biogas Upgrading. Molecules 2020; 25:E1378. [PMID: 32197376 PMCID: PMC7175154 DOI: 10.3390/molecules25061378] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/10/2020] [Accepted: 03/11/2020] [Indexed: 11/16/2022] Open
Abstract
Biogas is a potential renewable energy resource that can reduce the current energy dependency on fossil fuels. The major limitation of utilizing biogas fully in the various applications is the presence of a significant volume fraction of carbon dioxide in biogas. Here, we used adsorption-driven CO2 separation using the most prominent adsorbents, NaX (faujasite) and CaA (Linde Type A) zeolites. The NaX and CaA zeolites were structured into hierarchically porous granules using a low-cost freeze granulation technique to achieve better mass transfer kinetics. The freeze granulation processing parameters and the rheological properties of suspensions were optimized to obtain homogenous granules of NaX and CaA zeolites 2-3 mm in diameter with macroporosity of 77.9% and 68.6%, respectively. The NaX and CaA granules kept their individual morphologies, crystallinities with a CO2 uptake of 5.8 mmol/g and 4 mmol/g, respectively. The CO2 separation performance and the kinetic behavior were estimated by breakthrough experiments, where the NaX zeolite showed a 16% higher CO2 uptake rate than CaA granules with a high mass transfer coefficient, 1.3 m/s, compared to commercial granules, suggesting that freeze-granulated zeolites could be used to improve adsorption kinetics and reduce cycle time for biogas upgrading in the adsorption swing technology.
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Affiliation(s)
| | - Farid Akhtar
- Division of Materials Science, Luleå University of Technology, 97187 Luleå, Sweden;
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Cho EH, Lyu Q, Lin LC. Computational discovery of nanoporous materials for energy- and environment-related applications. MOLECULAR SIMULATION 2019. [DOI: 10.1080/08927022.2019.1626990] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Eun Hyun Cho
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
| | - Qiang Lyu
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
- School of Materials Science and Engineering, China University of Petroleum (East China), Qingdao, Shandong, China
| | - Li-Chiang Lin
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State University, Columbus, OH, USA
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Guo X, Wu L, Navrotsky A. Thermodynamic evidence of flexibility in H2O and CO2 absorption of transition metal ion exchanged zeolite LTA. Phys Chem Chem Phys 2018; 20:3970-3978. [DOI: 10.1039/c7cp08188j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Absorption thermodynamics on the framework flexibility of TMI-exchanged zeolite LTA driven by water/CO2 molecules.
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Affiliation(s)
- Xin Guo
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU
- University of California Davis
- Davis
- USA
| | - Lili Wu
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU
- University of California Davis
- Davis
- USA
| | - Alexandra Navrotsky
- Peter A. Rock Thermochemistry Laboratory and NEAT ORU
- University of California Davis
- Davis
- USA
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García-Sánchez A, García-Pérez E, Dubbeldam D, Krishna R, Calero S. A Simulation Study of Alkanes in Linde Type A Zeolites. ADSORPT SCI TECHNOL 2016. [DOI: 10.1260/026361707783908274] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Monte Carlo simulations were performed to study the adsorption and diffusion of small hydrocarbons in Linde Type A zeolites as a function of their calcium/sodium ratio. The diffusion studies were focused on methane whereas the adsorption simulations were performed from methane up to pentane. The results obtained showed that an increase in the number of cations in the structure (exchange of univalent sodium ions by divalent calcium ions) led to an increase in the adsorption of linear alkanes at low and medium pressure, but caused a decrease in adsorption at the highest pressures. An increase in the amount of cations favours molecular attraction and hence results in lower mobility. At higher cation loading the ions block the windows interconnecting the LTA cages, leading to a further decrease in diffusion. Methane self-diffusion coefficients obtained from our simulations were twice as high for the Linde Type 5A zeolite as for the Linde Type 4A zeolite. These results are consistent with previous experimental studies and provide a molecular picture of the influence of the zeolite type, the amount of cations contained and their location in the structure.
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Affiliation(s)
- Almudena García-Sánchez
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera km. 1, 41013 Seville, Spain
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Elena García-Pérez
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera km. 1, 41013 Seville, Spain
| | - David Dubbeldam
- Chemical & Biological Engineering Department, Northwestern University, Evanston, IL 60208, U.S.A
| | - Rajamani Krishna
- van't Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands
| | - Sofía Calero
- Department of Physical, Chemical and Natural Systems, University Pablo de Olavide, Ctra. Utrera km. 1, 41013 Seville, Spain
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Cao F, Jing Z, Sun H. Predicting the adsorption of n-perfluorohexane ( n-C 6F 14) on BAM-P109 activated carbon using an ab initio force field. ADSORPT SCI TECHNOL 2016. [DOI: 10.1177/0263617415619532] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
| | | | - Huai Sun
- Shanghai Jiao Tong University, China; Jilin University, China
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11
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Vlugt TJH, García-Pérez E, Dubbeldam D, Ban S, Calero S. Computing the Heat of Adsorption using Molecular Simulations: The Effect of Strong Coulombic Interactions. J Chem Theory Comput 2015; 4:1107-18. [PMID: 26636364 DOI: 10.1021/ct700342k] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Molecular simulations are an important tool for the study of adsorption of hydrocarbons in nanoporous materials such as zeolites. The heat of adsorption is an important thermodynamic quantity that can be measured both in experiments and molecular simulations, and therefore it is often used to investigate the quality of a force field for a certain guest-host (g - h) system. In molecular simulations, the heat of adsorption in zeolites is often computed using either of the following methods: (1) using the Clausius-Clapeyron equation, which requires the partial derivative of the pressure with respect to temperature at constant loading, (2) using the energy difference between the host with and without a single guest molecule present, and (3) from energy/particle fluctuations in the grand-canonical ensemble. To calculate the heat of adsorption from experiments (besides direct calorimetry), only the first method is usually applicable. Although the computation of the heat of adsorption is straightforward for all-silica zeolites, severe difficulties arise when applying the conventional methods to systems with nonframework cations present. The reason for this is that these nonframework cations have very strong Coulombic interactions with the zeolite. We will present an alternative method based on biased interactions of guest molecules that suffers less from these difficulties. This method requires only a single simulation of the host structure. In addition, we will review some of the other important issues concerning the handling of these strong Coulombic interactions in simulating the adsorption of guest molecules. It turns out that the recently proposed Wolf method ( J. Chem. Phys. 1999, 110 , 8254 ) performs poorly for zeolites as a large cutoff radius is needed for convergence.
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Affiliation(s)
- T J H Vlugt
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands, Department of Physical, Chemical, and Natural Systems, University Pablo de Olavide, Ctra. Utrera km 1, 41013 Sevilla, Spain, Chemical and Biological Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, and Condensed Matter and Interfaces, Utrecht University, P.O. Box 80000, 08 TA Utrecht, The Netherlands
| | - E García-Pérez
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands, Department of Physical, Chemical, and Natural Systems, University Pablo de Olavide, Ctra. Utrera km 1, 41013 Sevilla, Spain, Chemical and Biological Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, and Condensed Matter and Interfaces, Utrecht University, P.O. Box 80000, 08 TA Utrecht, The Netherlands
| | - D Dubbeldam
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands, Department of Physical, Chemical, and Natural Systems, University Pablo de Olavide, Ctra. Utrera km 1, 41013 Sevilla, Spain, Chemical and Biological Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, and Condensed Matter and Interfaces, Utrecht University, P.O. Box 80000, 08 TA Utrecht, The Netherlands
| | - S Ban
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands, Department of Physical, Chemical, and Natural Systems, University Pablo de Olavide, Ctra. Utrera km 1, 41013 Sevilla, Spain, Chemical and Biological Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, and Condensed Matter and Interfaces, Utrecht University, P.O. Box 80000, 08 TA Utrecht, The Netherlands
| | - S Calero
- Process & Energy Laboratory, Delft University of Technology, Leeghwaterstraat 44, 2628CA Delft, The Netherlands, Department of Physical, Chemical, and Natural Systems, University Pablo de Olavide, Ctra. Utrera km 1, 41013 Sevilla, Spain, Chemical and Biological Engineering Department, Northwestern University, 2145 Sheridan Road, Evanston, Illinois 60208, and Condensed Matter and Interfaces, Utrecht University, P.O. Box 80000, 08 TA Utrecht, The Netherlands
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Farmahini AH, Bhatia SK. Differences in the adsorption and diffusion behaviour of water and non-polar gases in nanoporous carbon: role of cooperative effects of pore confinement and hydrogen bonding. MOLECULAR SIMULATION 2014. [DOI: 10.1080/08927022.2014.976640] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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13
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14
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Peng X, Cao D. Computational screening of porous carbons, zeolites, and metal organic frameworks for desulfurization and decarburization of biogas, natural gas, and flue gas. AIChE J 2013. [DOI: 10.1002/aic.14046] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Xuan Peng
- Dept. of Automation, College of Information Science and Technology; Beijing University of Chemical Technology; Beijing 100029 China
- State Key Laboratory of Clean Energy Utilization; Zhejiang University; Hangzhou 310027 China
| | - Dapeng Cao
- Dept. of Chemical Engineering, Div. of Molecular and Materials Simulation, State Key Laboratory of Organic-Inorganic Composites; Beijing University of Chemical Technology; Beijing 100029 P.R. China
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Fang H, Kamakoti P, Ravikovitch PI, Aronson M, Paur C, Sholl DS. First principles derived, transferable force fields for CO2 adsorption in Na-exchanged cationic zeolites. Phys Chem Chem Phys 2013; 15:12882-94. [DOI: 10.1039/c3cp52246f] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Brunchi CC, Castillo Sanchez JM, Stankiewicz AI, Kramer HJM, Vlugt TJH. Adsorption of Volatile Organic Compounds. Experimental and Theoretical Study. Ind Eng Chem Res 2012. [DOI: 10.1021/ie302394d] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cristian C. Brunchi
- Intensified Reaction and Separation Systems and ‡Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Juan Manuel Castillo Sanchez
- Intensified Reaction and Separation Systems and ‡Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Andrzej I. Stankiewicz
- Intensified Reaction and Separation Systems and ‡Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Herman J. M. Kramer
- Intensified Reaction and Separation Systems and ‡Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
| | - Thijs J. H. Vlugt
- Intensified Reaction and Separation Systems and ‡Engineering Thermodynamics, Process & Energy Department, Faculty of Mechanical, Maritime and Materials Engineering, Delft University of Technology, Leeghwaterstraat 44, 2628 CA Delft, The Netherlands
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Wu H, Gong Q, Olson DH, Li J. Commensurate Adsorption of Hydrocarbons and Alcohols in Microporous Metal Organic Frameworks. Chem Rev 2012; 112:836-68. [DOI: 10.1021/cr200216x] [Citation(s) in RCA: 927] [Impact Index Per Article: 77.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Haohan Wu
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Qihan Gong
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - David H. Olson
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
| | - Jing Li
- Department of Chemistry and Chemical Biology, Rutgers University, Piscataway, New Jersey 08854, United States
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Influence of the sodium and calcium non-framework cations on the adsorption of hexane isomers in zeolite BEA. Theor Chem Acc 2010. [DOI: 10.1007/s00214-010-0769-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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van Erp T, Caremans T, Dubbeldam D, Martin-Calvo A, Calero S, Martens J. Enantioselective Adsorption in Achiral Zeolites. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906083] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Abstract
Zeolites are aluminosilicate solids bearing a negatively charged honeycomb framework of micropores into which molecules may be adsorbed for environmental decontamination, and to catalyse chemical reactions. They are central to green-chemistry since the necessity for organic solvents is minimised. Proton-exchanged (H) zeolites are extensively employed in the petrochemical industry for cracking crude oil fractions into fuels and chemical feedstocks for other industrial processes. Due to their ability to perform cation-exchange, in which the cations that are originally present to counterbalance the framework negative charge may be exchanged out of the zeolite by cations present in aqueous solution, zeolites are useful as industrial water-softeners, in the removal of radioactive Cs+ and Sr2+ cations from liquid nuclear waste and in the removal of toxic heavy metal cations from groundwaters and run-off waters. Surfactant-modified zeolites (SMZ) find particular application in the co-removal of both toxic anions and organic pollutants. Toxic anions such as arsenite, arsenate, chromate, cyanide and radioactive iodide can also be removed by adsorption into zeolites that have been previously loaded with co-precipitating metal cations such as Ag+ and Pb2+ which form practically insoluble complexes that are contained within the zeolite matrix.
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Finsy V, Calero S, García-Pérez E, Merkling PJ, Vedts G, De Vos DE, Baron GV, Denayer JFM. Low-coverage adsorption properties of the metal–organic framework MIL-47 studied by pulse chromatography and Monte Carlo simulations. Phys Chem Chem Phys 2009; 11:3515-21. [DOI: 10.1039/b822247a] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Smit B, Maesen TLM. Molecular Simulations of Zeolites: Adsorption, Diffusion, and Shape Selectivity. Chem Rev 2008; 108:4125-84. [DOI: 10.1021/cr8002642] [Citation(s) in RCA: 586] [Impact Index Per Article: 36.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Berend Smit
- Department of Chemical Engineering, University of California, Berkeley, California 94720-1462, Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, Nieuwe Achtergracht 166, 1018 WV Amsterdam, The Netherlands, and Centre Européen de Calcul Atomique et Moléculaire (CECAM), Ecole Normale Supérieure, 46 Allée d’Italie, 69007 Lyon France
| | - Theo L. M. Maesen
- Chevron, Energy Technology Company, 100 Chevron Way, Richmond, California 94802-0627
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Krishna R, van Baten J. Loading Dependence of Self-Diffusivities of Gases in Zeolites. Chem Eng Technol 2007. [DOI: 10.1002/ceat.200700127] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Dubbeldam D, Snurr RQ. Recent developments in the molecular modeling of diffusion in nanoporous materials. MOLECULAR SIMULATION 2007. [DOI: 10.1080/08927020601156418] [Citation(s) in RCA: 126] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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