Results 131 to 140 of about 9,508 (161)

Shape-selective alkylation of biphenyl over mordenite: cerium exchanged sodium mordenite and unmodified H-mordenite with low SiO2/Al2O3 ratio

Catalysis Letters, 1994
Liquid phase isopropylation of biphenyl with propylene was studied over a cerium exchanged sodium mordenite (Ce/NaM25) and a H-mordenite (HM25) with the same SiO2/Al2O3 ratio of 25. Shape-selective catalysis occurred to give 4,4′-diisopropylbiphenyl (4,4′-DIPS) in high selectivity over Ce/NaM25 under any propylene pressures.
Y. Sugi, T. Matsuzaki, T. Hanaoka, Y. Kubota, J. -H. Kim, X. Tu, M. Matsumoto   +6 more
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Decaline conversion on mordenite

Zeolites, 1990
The spectrum of gaseous products of the decaline conversion at 450°C on H-mordenite with propane and isobutane as main products is a typical one for a catalytic cracking reaction of, for instance, C 5 - or C 6 -alkanes. Therefore, it is concluded that in the first step decaline is fragmented under formation of acyclic species and in the second step ...
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N2 Adsorption at 77 K on H-Mordenite and Alkali-Metal-Exchanged Mordenites: An IR Study

The Journal of Physical Chemistry, 1995
N-2 interacts with positive M(+) centers (M(+) = H+, Li+ Na+, K+, Rb+, and Cs+) present in M(+)-mordenites, with activation in the IR of the N=N stretching vibration. From the analysis of the IR spectra and from the examination of the available space present in the main channels and in the lateral pockets, it is concluded that N-2 can interact with ...
F. Geobaldo, LAMBERTI, Carlo, RICCHIARDI, Gabriele, BORDIGA, Silvia, ZECCHINA, Adriano, G. Turnes Palomino, C. Otero Areán   +6 more
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Study of Mordenite Crystallization III: Factors Governing Mordenite Synthesis

1984
Abstract Mordenite is synthesized from different aluminosilicate gels in sealed pyrex tubes at 165°C. Its crystallization domain is established for these conditions and the coexisting phases are identified. Differences with published data are explained assuming partial dissolution of the silica-rich pyrex glass.
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Air separation on H-mordenite

Microporous and Mesoporous Materials, 2004
Abstract The separation of air components, oxygen and nitrogen, to obtain oxygen-enriched mixtures was studied by molecular modeling, utilising the Grand Canonical Monte Carlo method. Since a good gas-chromatographic resolution between oxygen and nitrogen was obtained on acid mordenite, with oxygen eluted first, the differential adsorption of air ...
A De Stefanis, G Perez, E Semprini, F Stefani, AAG Tomlinson   +4 more
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Synthesis of High-Ratio Mordenite

Russian Journal of Applied Chemistry, 2004
Synthesis of a mordenite-like zeolite from reaction mixtures of composition 2.5R ·. (2.2-7.3)Na2O · Al2O3 · (12-40)SiO2 · (300-1200)H2O, where R is monoethanolamine, was studied. The crystallization conditions under which mordenite with a SiO2/Al2O3 ratio of 13 to 22 can be synthesized were determined.
M. L. Pavlov, R. A. Makhamatkhanov, B. I. Kutepov, F. Kh. Kudasheva, G. I. Apkarimova, O. S. Buyanova   +5 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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Ethene Adsorption on Mordenite and Modified Mordenite

Acta Physico-Chimica Sinica, 2008
LI Fei-Fei, GUI Xing-Hua, LIU Dao-Sheng, SONG Li-Juan, SUN Zhao-Lin   +4 more
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Intracrystalline sorption by synthetic mordenites

Proceedings of the Royal Society of London. Series A. Mathematical and Physical Sciences, 1964
The inclusion of a number of representative molecules (He, Ne, Ar, Kr, Xe; H 2 , O 2 , N 2 ; n -C 4 H 10 , i -C 4 H 10 , C
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Mordenite catalyst

Zeolites, 1991
S. Inoue, K. lgawa
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