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Ta AT, Daouli A, Ullberg RS, Fonseca E, Proust V, Grandjean A, Hennig RG, Zur Loye HC, Badawi M, Phillpot SR. Incorporating solvent effects in DFT: insights from cation exchange in faujasites. Phys Chem Chem Phys 2024; 26:14561-14572. [PMID: 38722083 DOI: 10.1039/d4cp00467a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/23/2024]
Abstract
Zeolites are versatile materials renowned for their extra-framework cation exchange capabilities, with applications spanning diverse fields, including nuclear waste treatment. While detailed experimental characterization offers valuable insight, density functional theory (DFT) proves particularly adept at investigating ion exchange in zeolites, owing to its atomic and electronic resolution. However, the prevalent occurrence of zeolitic ion exchange in aqueous environments poses a challenge to conventional DFT modeling, traditionally conducted in a vacuum. This study seeks to enhance zeolite modeling by systematically evaluating predictive differences across varying degrees of aqueous solvent inclusion. Specifically focusing on monovalent cation exchange in Na-X zeolites, we explore diverse modeling approaches. These range from simple dehydrated systems (representing bare reference states in vacuum) to more sophisticated models that incorporate aqueous solvent effects through explicit water molecules and/or a dielectric medium. Through comparative analysis of DFT and semi-empirical DFT approaches, along with their validation against experimental results, our findings underscore the necessity to concurrently consider explicit and implicit solvent effects for accurate prediction of zeolitic ionic exchange.
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Affiliation(s)
- An T Ta
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.
| | - Ayoub Daouli
- Laboratoire Lorrain de Chimie Moléculaire L2CM, Université de Lorraine, CNRS, F-54000 Nancy, France.
| | - R Seaton Ullberg
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.
| | - Eric Fonseca
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.
| | - Vanessa Proust
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | | | - Richard G Hennig
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.
| | - Hans-Conrad Zur Loye
- Center for Hierarchical Waste Form Materials and Department of Chemistry and Biochemistry, University of South Carolina, Columbia, South Carolina 29208, USA
| | - Michael Badawi
- Laboratoire Lorrain de Chimie Moléculaire L2CM, Université de Lorraine, CNRS, F-54000 Nancy, France.
| | - Simon R Phillpot
- Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611, USA.
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Pang Y, Lee C, Vlaisavljevich B, Nicholas CP, Dauenhauer PJ. Multifunctional Amine Modifiers for Selective Dehydration of Methyl Lactate to Acrylates. JACS AU 2023; 3:368-377. [PMID: 36873694 PMCID: PMC9976339 DOI: 10.1021/jacsau.2c00513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 12/17/2022] [Accepted: 12/21/2022] [Indexed: 06/18/2023]
Abstract
Dehydration of methyl lactate to acrylic acid and methyl acrylate was experimentally evaluated over a Na-FAU zeolite catalyst impregnated with multifunctional diamines. 1,2-Bis(4-pyridyl)ethane (12BPE) and 4,4'-trimethylenedipyridine (44TMDP), at a nominal loading of 40 wt % or two molecules per Na-FAU supercage, afforded a dehydration selectivity of 96 ± 3% over 2000 min time on stream. Although 12BPE and 44TMDP have van der Waals diameters approximately 90% of the Na-FAU window opening diameter, both flexible diamines interact with internal active sites of Na-FAU as characterized by infrared spectroscopy. During continuous reaction at 300 °C, the amine loadings in Na-FAU remained constant for 12BPE but decreased as much as 83% for 44TMDP. Tuning the weighted hourly space velocity (WHSV) from 0.9 to 0.2 h-1 afforded a yield as high as 92% at a selectivity of 96% with 44TMDP impregnated Na-FAU, resulting in the highest yield reported to date.
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Affiliation(s)
- Yutong Pang
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
- Center
for Sustainable Polymers, University of
Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
| | - ChoongSze Lee
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
| | - Bess Vlaisavljevich
- Center
for Sustainable Polymers, University of
Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
- Department
of Chemistry, University of South Dakota, 115 Churchill-Haines Laboratory,
414 E. Clark Street, Vermillion, South Dakota 57069, United States
| | - Christopher P. Nicholas
- C2P Sciences L3C, 825 Chicago Ave. Suite 10B, Evanston, Illinois 60202, United States
- Låkril
Technologies Corporation, 2225 W. Harrison St. Suite 102, Chicago, Illinois 60612, United States
| | - Paul J. Dauenhauer
- Department
of Chemical Engineering & Materials Science, University of Minnesota, 421 Washington Ave. SE, Minneapolis, Minnesota 55455, United States
- Center
for Sustainable Polymers, University of
Minnesota, 207 Pleasant
Street SE, Minneapolis, Minnesota 55455, United States
- Låkril
Technologies Corporation, 2225 W. Harrison St. Suite 102, Chicago, Illinois 60612, United States
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Liu B, Dai M, Ali I, Li S, Sun L, Peng C, Naz I. Molecular insights on the influence of temperature and metal ions on the hydration of kaolinite (001) surface. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1943385] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Bingxin Liu
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, People’s Republic of China
| | - Min Dai
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, People’s Republic of China
| | - Imran Ali
- College of Chemistry and Environmental Engineering, Shenzhen University, Shenzhen, People’s Republic of China
| | - Shuai Li
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, People’s Republic of China
| | - Lin Sun
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, People’s Republic of China
| | - Changsheng Peng
- The Key Lab of Marine Environmental Science and Ecology, Ministry of Education, Ocean University of China, Qingdao, People’s Republic of China
- School of Environmental and Chemical Engineering, Zhaoqing University, Zhaoqing, People’s Republic of China
| | - Iffat Naz
- Science Unit, Deanship of Educational Services, Qassim University, Buraidah, Kingdom of Saudi Arabia
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Porcher F, Paillaud JL, Gaberova L, André G, Casale S, Massiani P. Monitoring by in situ neutron diffraction of simultaneous dehydration and Ni2+ mobility in partially exchanged NaY zeolites. NEW J CHEM 2016. [DOI: 10.1039/c5nj02918j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The incoherent signal in neutron diffraction patterns allows correlating in real time hydration–dehydration levels and structural changes in zeolites.
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Affiliation(s)
- Florence Porcher
- Laboratoire Léon Brillouin (LLB)
- UMR 12 CNRS-CEA
- 91191 Gif-sur-Yvette Cedex
- France
- Université de Lorraine
| | - Jean-Louis Paillaud
- Equipe Matériaux à Porosité Contrôlée (MPC)
- Institut de Science des Matériaux de Mulhouse (IS2M)
- UMR CNRS 7361
- Université Haute-Alsace
- 68093 Mulhouse Cedex
| | - Lucia Gaberova
- Sorbonne Université – Université Paris 06 UPMC
- Laboratoire de Réactivité de Surface (LRS)
- 75005 Paris Cedex
- France
| | - Gilles André
- Laboratoire Léon Brillouin (LLB)
- UMR 12 CNRS-CEA
- 91191 Gif-sur-Yvette Cedex
- France
| | - Sandra Casale
- Sorbonne Université – Université Paris 06 UPMC
- Laboratoire de Réactivité de Surface (LRS)
- 75005 Paris Cedex
- France
- CNRS UMR 7197
| | - Pascale Massiani
- Sorbonne Université – Université Paris 06 UPMC
- Laboratoire de Réactivité de Surface (LRS)
- 75005 Paris Cedex
- France
- CNRS UMR 7197
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