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Uzunova EL, Mikosch H. Electronic Structure and Stability of Double Six-Membered Rings of Oxygen-Bridged Silicon and Aluminum Atoms Related to Cation Site Occupancy in FAU Zeolites: a DFT Study. J Phys Chem B 2004. [DOI: 10.1021/jp036846h] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ellie L. Uzunova
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria, and Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna 1060, Austria
| | - Hans Mikosch
- Institute of General and Inorganic Chemistry, Bulgarian Academy of Sciences, Sofia 1113, Bulgaria, and Institute of Chemical Technologies and Analytics, Vienna University of Technology, Vienna 1060, Austria
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Valerio G, Goursot A, Vetrivel R, Malkina O, Malkin V, Salahub DR. Calculation of 29Si and 27Al MAS NMR Chemical Shifts in Zeolite-β Using Density Functional Theory: Correlation with Lattice Structure. J Am Chem Soc 1998. [DOI: 10.1021/ja980903g] [Citation(s) in RCA: 65] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- G. Valerio
- Contribution from Ecole Nationale Superiere de Chimie, Université de Montpellier, UMR 5618 CNRS, 8 rue de l'Ecole Normale, 34296 Montpellier Cédex 5, France, the Catalysis Division, National Chemical Laboratory, Pune 411008, India, the Computing Center, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, the Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, and the Département de Chimie, Université de Montréal
| | - A. Goursot
- Contribution from Ecole Nationale Superiere de Chimie, Université de Montpellier, UMR 5618 CNRS, 8 rue de l'Ecole Normale, 34296 Montpellier Cédex 5, France, the Catalysis Division, National Chemical Laboratory, Pune 411008, India, the Computing Center, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, the Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, and the Département de Chimie, Université de Montréal
| | - R. Vetrivel
- Contribution from Ecole Nationale Superiere de Chimie, Université de Montpellier, UMR 5618 CNRS, 8 rue de l'Ecole Normale, 34296 Montpellier Cédex 5, France, the Catalysis Division, National Chemical Laboratory, Pune 411008, India, the Computing Center, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, the Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, and the Département de Chimie, Université de Montréal
| | - O. Malkina
- Contribution from Ecole Nationale Superiere de Chimie, Université de Montpellier, UMR 5618 CNRS, 8 rue de l'Ecole Normale, 34296 Montpellier Cédex 5, France, the Catalysis Division, National Chemical Laboratory, Pune 411008, India, the Computing Center, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, the Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, and the Département de Chimie, Université de Montréal
| | - V. Malkin
- Contribution from Ecole Nationale Superiere de Chimie, Université de Montpellier, UMR 5618 CNRS, 8 rue de l'Ecole Normale, 34296 Montpellier Cédex 5, France, the Catalysis Division, National Chemical Laboratory, Pune 411008, India, the Computing Center, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, the Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, and the Département de Chimie, Université de Montréal
| | - D. R. Salahub
- Contribution from Ecole Nationale Superiere de Chimie, Université de Montpellier, UMR 5618 CNRS, 8 rue de l'Ecole Normale, 34296 Montpellier Cédex 5, France, the Catalysis Division, National Chemical Laboratory, Pune 411008, India, the Computing Center, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, the Institute of Inorganic Chemistry, Slovak Academy of Sciences, Dubravska cesta 9, 84235 Bratislava, Slovak Republic, and the Département de Chimie, Université de Montréal
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Deka RC, Vetrivel R. Molecular graphics and structural fitting of aromatics in large-pore zeolites. J Mol Graph Model 1998; 16:157-61, 169-76. [PMID: 10434256 DOI: 10.1016/s1093-3263(99)00007-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We describe the usefulness of molecular graphics and structural fitting techniques as powerful and reliable tools for quick screening of zeolite catalysts for shape selectivity. The syntheses of 4,4'-diisopropylbiphenyl and p-isobutylethylbenzene are considered as case studies. Molecular graphics analysis of the isomers of diisopropylbiphenyl and isobutylethylbenzene in various zeolites indicates that large-pore zeolites are needed for the synthesis of these alkylaromatics. The importance of size and shape of the channels of large-pore zeolites is clearly brought out by the structural fitting technique. From the analysis of the results of molecular graphics studies and the structural fitting studies, it is inferred that ZSM-12 and mordenite are suitable zeolites for shape-selective production of diisopropylbiphenyl, and that offretite and mordenite are suitable zeolites for shape-selective production of p-isobutylethylbenzene.
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Affiliation(s)
- R C Deka
- Catalysis Division, National Chemical Laboratory, Pune, India
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