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Synthesis of large mordenite crystals with different aspect ratios [PDF]

Microporous and Mesoporous Materials, 2009
Large mordenite crystals hold interest for fundamental research on separation and catalysis as well as emerging applications such as functional devices. A number of methods are now available to obtain large mordenite crystals. However, it still remains a
Petra de Jongh, K P de Jong
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Infrared Study of Acetophenone Adsorption on Mordenite and Dealuminated Mordenite

Journal of Colloid and Interface Science, 1998
Infrared spectra of acetophenone adsorbed on mordenite and acid-leached mordenite are reported. The effects of dealumination were characterized by pyridine adsorption and 29Si and 27Al magic angle spinning nuclear magnetic resonance spectroscopy (MAS NMR).
, Ahmad, , Anderson, , Dines, , Rochester   +3 more
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Partial Oxidation of Methane Catalyzed by H-Mordenite and Fluorinated Mordenite

Applied Catalysis, 1988
Abstract Mordenite and fluorinated mordenite are compared as catalysts for the partial oxidation of methane in the temperature range 350–425°C. With both catalysts the major product is ethylene but the latter catalyst yields higher conversions up to 425°C at which temperature carbon monoxide and carbon dioxide become the primary products. Eliminating
S. Kowalak, J.B. Moffat
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Hydrogen mordenite and hydronium mordenite. Ion exchange and thermal stability

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1975
Isotherms for the Na+⇌ H3O+ exchange in mordenite showed irreversibility. Hydronium mordenite prepared from the Na-form could be fully re-converted to the Na-form with aqueous NaCl, NaOH or CH3COONa, but hydronium mordenite made by heating the NH4-form to 450°C and subsequent hydration underwent only ∼70 % exchange to the Na-form.
Richard M. Barrer, Jacek Klinowski
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Enhanced benzene formation on Pt/H-mordenite and Pd/H-mordenite

Catalysis Letters, 1993
The distribution of methylcyclopentane (MCP) ring enlargement (RE) products between benzene (Bz) and cyclohexane (CH) provides information on the reaction mechanism. The Bz/CH ratio is in excess of the calculated and experimentally determined equilibrium ratio.
Bruce A. Lerner, Brian T. Carvill, Wolfgang M. H. Sachtler   +2 more
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tert-Butylation of toluene over mordenite and cerium-modified mordenite catalysts

Applied Catalysis A: General, 2006
Abstract tert -Butylation of toluene with tert -butanol in the liquid phase was studied over large pore mordenite zeolite catalyst (H-MOR CBV 21A with Si/Al = 10.5) and over cerium-modified parent zeolite with 1–6 wt.% of cerium. The catalytic activity and para -selectivity of parent and cerium-modified H-mordenite catalysts is discussed.
G. Kostrab, D. Mravec, M. Bajus, I. Janotka, Y. Sugi, S.J. Cho, J.H. Kim   +6 more
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Multiple Equilibrium Analysis Description of Adsorption on Na−Mordenite and H−Mordenite

Journal of the American Chemical Society, 1999
Adsorption isotherms are reported for Na−mordenite and H−mordenite at several temperatures with a series of gas adsorptives above their critical temperature. The data sets are analyzed with the multiple equilibrium analysis (MEA) method [Drago, R. S.; et al. J. Am. Chem. Soc. 1998, 120, 538−547. Drago, R. S.; et al. J. Phys. Chem.
Charles Edwin Webster, Andrew Cottone, Russell S. Drago   +2 more
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Ion exchange in mordenite

Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases, 1974
Ion-exchange isotherms have been measured for synthetic mordenite involving the cation pairs Na+⇌Cs+, NH+4⇌K+, NH+4⇌Na+, NH+4⇌Li+, 2NH+4⇌Ca2+, 2NH+4⇌Sr2+ and 2NH+4⇌Ba2+. In all cases except those involving Ca2+ and Sr2+ reversible exchange was effected.
Richard M. Barrer, Jacek Klinowski
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Dehydration of methylbutanols on mordenites

Bulletin of the Academy of Sciences of the USSR Division of Chemical Science, 1984
1. Dehydration of 2-methyl-2-butanol takes place on weak and strong acid sites, while 3-methyl-2-butanol is primarily dehydrated on the strong acid sites of the catalyst. 2. Dehydration of 2-methyl-2-butanol on mordenites takes place only according to the mechanism of Β-elimination, while 3-methyl-2-butanol is dehydrated according to the
Kh. M. Minachev, A. I. Maksimov, I. V. Mishin, �. �. Senderov, I. I. Levitskii   +4 more
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Diffusion of hydrocarbons in mordenite and molecular-sieve selectivity of mordenite catalysts

Reaction Kinetics and Catalysis Letters, 1979
The diffusion of n-octane and n-propylbenzene in mordenite and the molecularsieve selectivity in hydrocracking of octane-propylbenzene binary mixtures over a mordenite catalyst have been studied. The hydrocarbon diffusivities and molecular-sieve selectivity change are accounted for by diffusion through mordenite channel mouths poisoned with an easily ...
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