14 Result(s)
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Article
A catalytic membrane reactor for water-gas shift reaction
We conducted the WGS reaction on a catalytic membrane reactor consisting of a WGS catalyst bed, Pt/CeO2 and thin, defect-free, Pd-Cu alloy membranes. The presence of CO and other gases with H2 reduced the H2 perm...
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Article
Catalytic properties of potassium-or lanthanum-promoted Co/γ-Al2O3 catalysts in carbon monoxide hydrogenation
The effects of potassium or lanthanum additives on the catalytic properties of alumina-supported cobalt catalysts were examined through carbon monoxide hydrogenation reaction. The catalysts were characterized ...
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Article
Deactivation control through accelerated precoking for the CoMo/γAl2O3 catalysts in thiophene hydrodesulfurization
Information on the degree of deactivation is very important for predicting catalyst life, from which the catalyst design could be further improved. The CoMo/Al2O3 catalysts, used for the hydrodesulfurization of l...
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Article
Preparation of mo nitride catalysts and their applications to the hydrotreating of indole and benzothiophene
Molybdenum nitrides were prepared by temperature-programmed reduction of MoO3 with flowing NH3. They were tested for indole HDN and benzothiophene HDS. Too low or high NH3 space velocity was inadequate to produce...
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Article
Effect of active site distribution on liquid-phase olefin hydrogenation over polymer-supported palladium complex
Chloromethylated polystyrene beads with different distributions have been prepared and phosphinated. PdCl2 was supported on the phosphinated supports to give polymer-supported Pd complex catalysts with different ...
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Article
Crystal growth of high silica ZSM-5 at low temperature synthesis conditions
At the temperature of 90°C and under atmospheric pressure, growth kinetics of high silica ZSM-5 was investigated through a long induction, nucleation and crystal growth periods. It was found the entire crystal...
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Article
Characteristics of bimetallic cobalt and molybdenum catalysts supported on activated carbon or alumina in hydrodesulfurization
A series of bimetallic cobalt (Co) and molybdenum (Mo) catalysts supported on activated carbon or alumina were prepared, and their activities in thiophene hydrodesulfurization and ethylene hydrogenation were c...
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Article
Methylformate formation from methanol and CO ON Cu/ZnO catalysts
The reaction mechanism for the methylformate formation on Cu/ZnO catalysts from methanol and CO was investigated by the labeling study with13C methanol. It was found that methylformate could be formed through two...
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Article
Isomerization of 1-hexene catalyzed over polymer-supported RuCl2(PPh3)3
Polymer-supported ruthenium catalyst was prepared by anchoring dichlorotris(triphenylphosphine)ruthenium, RuCl2(PPh3)3, onto the phosphinated polystyrene bead. The polymer-supported RuCl2(PPh3)3 could be reused s...
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Article
Rate multiplicity due to interactions between adsorbed species
A generalized Langmuir-Hinshelwood mechanism for the reaction A + 1 /2B2 ⇌ C has been studied. Lateral (nearest neighbor) interactions between the adsorbed species have been considered to analyze the multiple ste...
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Article
Effect of carbon deposits on the properties of co/y-zeolite catalysts for co hydrogenation
Co/Y-zeolite catalysts were prepared by three different preparation methods of excess-water (EW), ion-exchange(IE) and carbonyl complex-impregnation(CI), and they were deposited by carbon through the dispropor...
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Article
Deactivation phenomena of supported platinum catalysts during the hydrogenation of cyclopropane
Cyclopropane hydrogenation reaction was performed in a differential reactor operating at atmospheric pressure, 50‡C and H2/C3H6 ratio of 9, and the deactivation of the catalysts during the reaction was investigat...
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Article
Sorption selectivity of NaY- and KY- zeolites for xylene and toluene
The selective adsorption capacities of NaY- and KY-zeolites for xylene isonners and toluene were investigated by measuring the rate of unidirectional diffusion in a batch adsorber and the breakthrough behavior...
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Article
Alkylation of benzene with 1dodecene by macroreticular resin catalysts
The alkylation of benzene with 1-dodecene was performed in a batch reactor by two types of macroreticular ion exchange resin catalysts, i.e., Amberlyst 15 and Amberlyst XN-1010. The external mass transfer resi...
