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Tabassum N, Ali SS. A Review on Synthesis and Transformation of Ethanol into Olefins Using Various Catalysts. CATALYSIS SURVEYS FROM ASIA 2021. [DOI: 10.1007/s10563-021-09348-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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2
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Erdős M, Geerdink DF, Martin-Calvo A, Pidko EA, van den Broeke LJP, Calero S, Vlugt TJH, Moultos OA. In Silico Screening of Zeolites for High-Pressure Hydrogen Drying. ACS APPLIED MATERIALS & INTERFACES 2021; 13:8383-8394. [PMID: 33566563 PMCID: PMC7908017 DOI: 10.1021/acsami.0c20892] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/23/2020] [Accepted: 01/18/2021] [Indexed: 06/12/2023]
Abstract
According to the ISO 14687-2:2019 standard, the water content of H2 fuel for transportation and stationary applications should not exceed 5 ppm (molar). To achieve this water content, zeolites can be used as a selective adsorbent for water. In this work, a computational screening study is carried out for the first time to identify potential zeolite frameworks for the drying of high-pressure H2 gas using Monte Carlo (MC) simulations. We show that the Si/Al ratio and adsorption selectivity have a negative correlation. 218 zeolites available in the database of the International Zeolite Association are considered in the screening. We computed the adsorption selectivity of each zeolite for water from the high-pressure H2 gas having water content relevant to vehicular applications and near saturation. It is shown that due to the formation of water clusters, the water content in the H2 gas has a significant effect on the selectivity of zeolites with a helium void fraction larger than 0.1. Under each operating condition, five most promising zeolites are identified based on the adsorption selectivity, the pore limiting diameter, and the volume of H2 gas that can be dried by 1 dm3 of zeolite. It is shown that at 12.3 ppm (molar) water content, structures with helium void fractions smaller than 0.07 are preferred. The structures identified for 478 ppm (molar) water content have helium void fractions larger than 0.26. The proposed zeolites can be used to dry 400-8000 times their own volume of H2 gas depending on the operating conditions. Our findings strongly indicate that zeolites are potential candidates for the drying of high-pressure H2 gas.
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Affiliation(s)
- Máté Erdős
- Engineering
Thermodynamics, Process & Energy Department, Faculty of Mechanical,
Maritime and Materials Engineering, Delft
University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Daan F. Geerdink
- Engineering
Thermodynamics, Process & Energy Department, Faculty of Mechanical,
Maritime and Materials Engineering, Delft
University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Ana Martin-Calvo
- Department
of Physical, Chemical, and Natural Systems, Universidad Pablo de Olavide, Ctra. Utrera km, 1, ES-41013 Seville, Spain
| | - Evgeny A. Pidko
- Inorganic
Systems Engineering, Chemical Engineering Department, Faculty of Applied
Sciences, Delft University of Technology, Van der Maasweg 9, 2629HZ Delft, The Netherlands
| | - Leo J. P. van den Broeke
- Engineering
Thermodynamics, Process & Energy Department, Faculty of Mechanical,
Maritime and Materials Engineering, Delft
University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Sofia Calero
- Materials
Simulation & Modelling, Department of Applied Physics, Eindhoven University of Technology, 5600MB Eindhoven, The Netherlands
| | - Thijs J. H. Vlugt
- Engineering
Thermodynamics, Process & Energy Department, Faculty of Mechanical,
Maritime and Materials Engineering, Delft
University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
| | - Othonas A. Moultos
- Engineering
Thermodynamics, Process & Energy Department, Faculty of Mechanical,
Maritime and Materials Engineering, Delft
University of Technology, Leeghwaterstraat 39, 2628CB Delft, The Netherlands
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Mon M, Leyva-Pérez A. Zeolites catalyze selective reactions of large organic molecules. ADVANCES IN CATALYSIS 2021. [DOI: 10.1016/bs.acat.2021.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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4
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Heravi MM, Montazeri N, Rahmizadeh M, Bakavoli M, Ghassemzadeh M. Zeolite-induced Heterocyclization: A Superior Method of Synthesis of Condensed Imidazoles. JOURNAL OF CHEMICAL RESEARCH 2019. [DOI: 10.3184/030823400103166274] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Majid M. Heravi
- Department of Chemistry, School of Sciences, Ferdowsi University of Mashhad, Iran
| | | | | | | | - Mitra Ghassemzadeh
- Chemistry and Chemical Engineering Research Center of Iran, P.O. Box 14335-186, Tehran, Iran
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Gao S, Zhu X, Li X, Wang Y, Zhang Y, Xie S, An J, Chen F, Liu S, Xu L. Thermodynamic study of direct amination of isobutylene to tert-butylamine. CHINESE JOURNAL OF CATALYSIS 2017. [DOI: 10.1016/s1872-2067(16)62550-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sudhakar Chary V, Rajanna KC, Krishnaiah G, Srinivas P. Zeolite Y-assisted nitration of aromatic and heterocyclic compounds and decarboxylative nitration of α,β-unsaturated acids under non-conventional conditions. Catal Sci Technol 2016. [DOI: 10.1039/c5cy00919g] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The approach outlined in this paper is particularly appropriate for the conversion of unsaturated cinnamic acids into nitrostyrenes.
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Affiliation(s)
- V. Sudhakar Chary
- Department of Chemistry
- Osmania University
- Hyderabad – 500 001, T.S
- India
| | - K. C. Rajanna
- Department of Chemistry
- Osmania University
- Hyderabad – 500 001, T.S
- India
| | - G. Krishnaiah
- Department of Chemistry
- Osmania University
- Hyderabad – 500 001, T.S
- India
| | - P. Srinivas
- Department of Chemistry
- Osmania University
- Hyderabad – 500 001, T.S
- India
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Sari ZGLV, Younesi H, Kazemian H. Synthesis of nanosized ZSM-5 zeolite using extracted silica from rice husk without adding any alumina source. APPLIED NANOSCIENCE 2014. [DOI: 10.1007/s13204-014-0370-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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8
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Zhu MH, Lu ZH, Kumakiri I, Tanaka K, Chen XS, Kita H. Preparation and characterization of high water perm-selectivity ZSM-5 membrane without organic template. J Memb Sci 2012. [DOI: 10.1016/j.memsci.2012.04.037] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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9
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Chauhan NL, Das J, Jasra RV, Murthy ZVP, Parikh PA. Synthesis of zeolite ZSM-5: Effect of emulsifiers. CRYSTAL RESEARCH AND TECHNOLOGY 2012. [DOI: 10.1002/crat.201100547] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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10
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Surface capped silver nanoparticles over anatase titania: an efficient catalyst for aromatic nitration reactions. REACTION KINETICS MECHANISMS AND CATALYSIS 2011. [DOI: 10.1007/s11144-011-0362-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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11
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Eder-Mirth G, Lercher JA. Acid/base-induced selectivity of molecular sieves in catalytic conversion of polar molecules. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19961150302] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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12
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Gunnewegh E, Hoefnagel A, Downing R, van Bekkum H. Environmentally friendly synthesis of coumarin derivatives employing heterogeneous catalysis. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19961150407] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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13
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HOELDERICH WF, VAN BEKKUM H. ChemInform Abstract: Zeolites in Organic Syntheses. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/chin.199147310] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Tielens F. Exploring the reactivity of framework vanadium, niobium, and tantalum sites in zeolitic materials using DFT reactivity descriptors. J Comput Chem 2009; 30:1946-51. [DOI: 10.1002/jcc.21192] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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15
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De Goede A, Oosterom MV, Van Deurzen M, Sheldon RA, Bekkum HV, Rantwijk FV. Selective Lipase-Catalyzed Esterification of Alkyl Glycosides. ACTA ACUST UNITED AC 2009. [DOI: 10.3109/10242429408992116] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- A.T.J.W. De Goede
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628, BL Delft, The Netherlands
| | - M. Van Oosterom
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628, BL Delft, The Netherlands
| | - M.P.J. Van Deurzen
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628, BL Delft, The Netherlands
| | - R. A. Sheldon
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628, BL Delft, The Netherlands
| | - H. Van Bekkum
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628, BL Delft, The Netherlands
| | - F. Van Rantwijk
- Laboratory of Organic Chemistry and Catalysis, Delft University of Technology, Julianalaan 136, 2628, BL Delft, The Netherlands
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17
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Tielens F, Trejda M, Ziolek M, Dzwigaj S. Nature of vanadium species in V substituted zeolites: A combined experimental and theoretical study. Catal Today 2008. [DOI: 10.1016/j.cattod.2008.04.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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18
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Chandorkar J, Umbarkar S, Rode C, Kotwal V, Dongare M. Synthesis of tinidazole by condensation–oxidation sequence using MoO3/SiO2 bifunctional catalyst. CATAL COMMUN 2007. [DOI: 10.1016/j.catcom.2007.01.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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19
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Bakavoli M, Sabzevari O, Rahimizadeh M. H-Y-zeolites induced heterocyclization: Highly efficient synthesis of substituted-quinazolin-4(3H)ones under microwave irradiation. CHINESE CHEM LETT 2007. [DOI: 10.1016/j.cclet.2007.03.029] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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20
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Heravi MM, Oskooi HA, Mafi M. Regioselective N-Methylation of Methylthio-Substituted Pyrimidinones and 1,2,4-Triazinone with Methanol over H-Y Zeolite. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397919708004083] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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21
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Reddy BM, Reddy VR, Giridhar D. SYNTHESIS OF COUMARINS CATALYZED BY ECO-FRIENDLY W/ZrO2SOLID ACID CATALYST. SYNTHETIC COMMUN 2006. [DOI: 10.1081/scc-100107007] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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22
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Esteves PM, Louis B. Experimental and DFT Study of the Partial Oxidation of Benzene by N2O over H-ZSM-5: Acid Catalyzed Mechanism. J Phys Chem B 2006; 110:16793-800. [PMID: 16913820 DOI: 10.1021/jp062715f] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reaction mechanism for hydroxylation of benzene by N(2)O has been studied on chemically modified ZSM-5 catalysts. A maximum in catalytic activity and selectivity was reached for steamed samples under mild conditions (about 30% conversion with 94% selectivity). Chemical modifications, through ion exchange (H(+) versus Na(+)), have demonstrated the importance of the presence of Brönsted acid sites. The results obtained suggest a Langmuir-Hinshelwood mechanism between benzene and N(2)O adsorbed on two distinct active sites. A density functional theory study considering the possible reaction intermediates also confirmed the possible formation of protonated nitrous oxide, leading to a Wheland-type intermediate, thus supporting an electrophilic aromatic substitution assisted by the confined environment provided by the active zeolite framework.
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Affiliation(s)
- Pierre M Esteves
- Instituto de Química, Universidade Federal do Rio de Janeiro (UFRJ), Cidade Universitaria-Ilha do Fundão, Centro de Tecnologia-Bloco A, Rio de Janeiro-RJ, 21949-900, Brazil
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23
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Das DP, Parida K. Liquid phase bromination of phenol over titania pillared zirconium phosphate and titanium phosphate. CATAL COMMUN 2006. [DOI: 10.1016/j.catcom.2005.08.006] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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24
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de Lathouder K, Marques Fló T, Kapteijn F, Moulijn J. A novel structured bioreactor: Development of a monolithic stirrer reactor with immobilized lipase. Catal Today 2005. [DOI: 10.1016/j.cattod.2005.06.056] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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25
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Reddy BM, Sreekanth PM, Reddy VR. Modified zirconia solid acid catalysts for organic synthesis and transformations. ACTA ACUST UNITED AC 2005. [DOI: 10.1016/j.molcata.2004.09.003] [Citation(s) in RCA: 93] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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26
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Sui Y, Fu X, Zeng R, Ma X. Preparation, characterization and application of a new type of ion exchanger and solid acid zirconium sulfonated oligo-polystyrenylphosphonate-phosphate supported on ZrO2. ACTA ACUST UNITED AC 2004. [DOI: 10.1016/j.molcata.2004.03.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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27
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Dongare MK, Bhagwat VV, Ramana C, Gurjar MK. Silica supported MoO 3 : a mild heterogeneous catalyst for the Beckmann rearrangement and its application to some sugar derived ketoximes. Tetrahedron Lett 2004. [DOI: 10.1016/j.tetlet.2004.04.068] [Citation(s) in RCA: 48] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Zahouily M, Bahlaouan B, Aadil M, Rayadh A, Sebti S. Natural Phosphate Doped with Potassium Fluoride: Efficient Catalyst for the Construction of a Carbon−Carbon Bond. Org Process Res Dev 2004. [DOI: 10.1021/op034161+] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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29
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van Bokhoven JA, van der Eerden AMJ, Koningsberger DC. Three-coordinate aluminum in zeolites observed with in situ x-ray absorption near-edge spectroscopy at the Al K-edge: flexibility of aluminum coordinations in zeolites. J Am Chem Soc 2003; 125:7435-42. [PMID: 12797818 DOI: 10.1021/ja0292905] [Citation(s) in RCA: 109] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Application of in situ X-ray absorption near-edge spectroscopy (XANES) at the Al K-edge provides unique insight into the flexibilty of the aluminum coordinations in zeolites as a function of treatment or during true reaction conditions. A unique, previously not observed, pre-edge feature is detected in zeolites H-Mordenite and steamed and unsteamed H-Beta at temperatures above 675 K. Spectra simulations using the full multiple scattering code Feff8 identify the unique pre-edge feature as three-coordinate aluminum. The amount of three-fold coordinated aluminum is a function of temperature and pretreatment of a zeolite: a steamed zeolite Beta contains more three-coordinate aluminum than an unsteamed sample. No clear differences between zeolites H-Mordenite and H-Beta were observed. Octahedrally coordinated aluminum forms in zeolites H-Mordenite and H-Beta at room temperature in a stream of wet helium. This octahedrally coordinated aluminum is unstable at temperatures higher than 395 K, where it quantitatively reverts to the tetrahedral coordination.
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Affiliation(s)
- Jeroen A van Bokhoven
- Institute for Chemical and Bioengineering, ETH Hönggerberg, CH-8093 Zurich, Switzerland.
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30
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Esakkidurai T, Kumarraja M, Pitchumani K. Regioselective nitration of aromatic substrates in zeolite cages. J CHEM SCI 2003. [DOI: 10.1007/bf02716978] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Kumarraja M, Pitchumani K. Divalent Transition Metal Ion-Exchanged Faujasites as Mild, Efficient, Heterogeneous Friedel–Crafts Benzylation Catalysts. SYNTHETIC COMMUN 2003. [DOI: 10.1081/scc-120015565] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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33
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Narender N, Krishna Mohan K, Reddy R, Srinivasu P, Kulkarni S, Raghavan K. Liquid phase bromination of phenols using potassium bromide and hydrogen peroxide over zeolites. ACTA ACUST UNITED AC 2003. [DOI: 10.1016/s1381-1169(02)00131-0] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Luo Q, Deng F, Yuan Z, Yang J, Zhang M, Yue Y, Ye C. Using Trimethylphosphine as a Probe Molecule to Study the Acid Sites in Al−MCM-41 Materials by Solid-State NMR Spectroscopy. J Phys Chem B 2002. [DOI: 10.1021/jp0213093] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Qing Luo
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
| | - Feng Deng
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
| | - Zhongyong Yuan
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
| | - Jun Yang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
| | - Mingjin Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
| | - Yong Yue
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
| | - Chaohui Ye
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Science, Wuhan 430071, People's Republic of China, and Beijing Laboratory of Electron Microscopy, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Science, Beijing 100080, People's Republic of China
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A new and convenient method for the acylation of amino acids in the presence of a modified zeolite: Ersorb®. ACTA ACUST UNITED AC 2002. [DOI: 10.1016/s1381-1169(01)00518-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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38
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Wu CD, Lu CZ, Yang WB, Lu SF, Zhuang HH, Huang JS. The Structure and Physical Properties of a Novel Three-Dimensional Zeolite-Like Nanoporous Architecture Formed by Two Different Polymeric Layers: [Eu2(btc)(H2btc)(H2O)]·4H2O. Eur J Inorg Chem 2002. [DOI: 10.1002/1099-0682(200203)2002:4<797::aid-ejic797>3.0.co;2-v] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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39
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Dědeček J, Kaucký D, Wichterlová B, Gonsiorová O. Co2+ions as probes of Al distribution in the framework of zeolites. ZSM-5 study. Phys Chem Chem Phys 2002. [DOI: 10.1039/b203966b] [Citation(s) in RCA: 123] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Torres C, Otero C. Part III. Direct enzymatic esterification of lactic acid with fatty acids. Enzyme Microb Technol 2001; 29:3-12. [PMID: 11427229 DOI: 10.1016/s0141-0229(01)00344-1] [Citation(s) in RCA: 45] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Lipase catalyzed esterification reactions between lactic acid and several fatty acids have been studied. Difficulties arise in esterifying lactic acid because of the potential for this substance to act both as an acyl donor and as a nucleophile. These difficulties were minimized via strategies which greatly increased the yield of the desired ester. Use of the companion fatty acid in excess with respect to lactic acid in an apolar solvent (n-hexane) in which the lactic is not completely dissolved has been employed to minimize the potential for lactic acid to act as an acyl donor in a self-polymerization reaction.Beneficial and sinergistic effects of both silica gel and molecular sieves on conversion to the desired product are described. However, careful control of the amount of molecular sieves used is required. This fact is a consequence of two opposing effects of this material: i.e. adsorption of both lactic acid and water from the reaction mixture. For reaction between caprylic and lactic acids, use of an excessive amount of enzyme reduces the extent of conversion to 2-O-caproyl-lactic acid.A very pure ester of the L-enantiomer (optical rotation of [alpha]D(25) = -23.5) can be prepared in n-hexane using a four fold excess of caprylic acid and Candida antarctica lipase. Optimum reaction conditions lead to 35% yield of 2-O-caproyl-lactic acid, a result which is close to the maximum yield that can be enantioselectively obtained from commercial grade lactic acid (68 mole per cent monomer).
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Affiliation(s)
- C Torres
- Instituto de Catálisis, CSIC. Cantoblanco 28049, Madrid, Spain
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Kissin YV. CHEMICAL MECHANISMS OF CATALYTIC CRACKING OVER SOLID ACIDIC CATALYSTS: ALKANES AND ALKENES. CATALYSIS REVIEWS-SCIENCE AND ENGINEERING 2001. [DOI: 10.1081/cr-100104387] [Citation(s) in RCA: 183] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Narender N, Srinivasu P, Kulkarni SJ, Raghavan KV. Liquid Phase Regioselective Bromination of Aromatic Compounds Over Hzsm-5 Catalyst. SYNTHETIC COMMUN 2000. [DOI: 10.1080/00397910008086993] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
44
|
Silva A, Alvarez F, Ramôa Ribeiro F, Guisnet M. Synthesis of cyclohexylcyclohexanone on bifunctional Pd faujasites. Catal Today 2000. [DOI: 10.1016/s0920-5861(00)00348-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
45
|
Esterification of lauric acid with glycerol using modified zeolite beta as catalyst. ACTA ACUST UNITED AC 2000. [DOI: 10.1016/s0167-2991(00)80551-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/12/2023]
|
46
|
Isopropylation of naphthalene over modified HMCM-41, HY and SAPO-5 catalysts1IICT communication no. 4034.1. ACTA ACUST UNITED AC 1999. [DOI: 10.1016/s1381-1169(99)00191-0] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
|
47
|
|
48
|
|
49
|
Highly Selective Fries Rearrangement over Zeolites and Nafion in Silica Composite Catalysts: A Comparison. J Catal 1998. [DOI: 10.1006/jcat.1998.2034] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
50
|
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