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Synthesis of Di-t-butyl Polysulfide from Isobutene, Hydrogen Sulfide, and Sulfur (Part 2) Catalytic Behavior of MFI Zeolites
Polysulfide synthesis Zeolite catalyst MFI zeolite Gallium Reaction mechanism
2009/8/4
Synthesis of di-t-butyl polysulfide from isobutene, hydrogen sulfide and sulfur was carried out at 125°C in an autoclave over MFI zeolite catalysts isomorphously framework-substituted with Al, Ga, an...
Adsorption of Hydrocarbons and Formation of Carbocations over Zeolites Studied by IR Spectroscopy
Zeolite catalyst IR Alkene Carbocation Adsorption
2009/8/4
Carbocation species are considered to be important intermediates in the reactions of hydrocarbons over zeolites, and the formation mechanism, as well as the reactivity, has been studied mainly by NMR...
Pretreatment of MFI Type Zeolites with Ethylene to Enhance Their Catalytic Activities for Dehydration of Ethanol
MFI type zeolite Pretreatment Ethylene Dehydration Ethanol
2009/7/28
The effects of the pretreatment of various types of zeolites such as H-ZSM5, H-mordenite, H-beta, HY and gallosilicate with ethylene on their activities for the dehydration of ethanol at low temperat...
Selective Hydroconversion of n-Heptane over Pd-supported Zeolites and Pd-containing Hybrid Catalyst
Hydrocracking Hydroisomerization Heptane catalyst Hydrogen spillover
2009/7/28
Hydroconversion of n-heptane was investigated over Pd-supported H-zeolite and hybrid catalyst consisting of Pd/SiO2 and USY. Highly selective hydrocracking occurred over Pd/ZSM-5 whereas hydroisomeri...
Effect of Micropore Size on Catalyst Deactivation in Vapor Phase Beckmann Rearrangement over Zeolites
Beckmann rearrangement Cyclohexanone oxime Zeolite Caprolactam selectivity
2009/7/27
The vapor phase Beckmann rearrangement of cyclohexanone oxime (CHO) was carried out over TS-1 with an MFI pore structure and SSZ-31 and SSZ-24 with pore sizes larger than that of MFI to elucidate the...
Ammonia Adsorption on Ion Exchanged Y-zeolites as Ammonia Storage Material
Ammonia adsorption Ion exchanged Y-zeolite Ammonia storage IR TPD
2009/7/23
Ammonia adsorption isotherm on ion exchanged Y-zeolites (Na-Y, H-Y, Co-Y, Cu-Y, K-Y, Rb-Y, and Cs-Y) was investigated to asses the potential for use in ammonia separation and storage, by measuring th...
THE TRANSFORMATIONS OF 4-tert-BUTYLTOLUENE OVER Ce-MODIFIED MORDENITE ZEOLITES
4-tert-butyltoluene tert-butylation isomerization dealkylation mordenite zeolites
2010/8/11
The transformation of 4-tert-butyltoluene over Ce-modified H-mordenite with 1 and 4 wt. % of cerium on zeolite prepared by Ce-impregnation of H- mordenite (H-MOR CBV 21A) was studied at 180 °C in the ...