Results 161 to 170 of about 7,842 (218)
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Ethanol dehydrogenation to ethyl acetate by using copper and copper chromite catalysts
Chemical Engineering Journal, 2012Abstract In the recent years, the interest in the ethanol production from renewable natural sources, as a possible alternative energy vector, has strongly grown in the world. The low-cost ethanol availability has also favored the study of the production of different chemicals such as ethylene, ethyl ether, acetaldehyde and ethyl acetate starting from
E Santacesaria +2 more
exaly +3 more sources
Kinetics and Catalysis, 2000
The reduction of copper chromite CuCr2O4 by hydrogen at 300–573 K and a hydrogen pressure of 4×104-8 × 104 104 Pa and hydrogen desorption from the surface of a reduced sample are studied. The rate of copper chromite reduction becomes high at temperatures above 473 K.
A V Khasin, I I Simentsova
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The reduction of copper chromite CuCr2O4 by hydrogen at 300–573 K and a hydrogen pressure of 4×104-8 × 104 104 Pa and hydrogen desorption from the surface of a reduced sample are studied. The rate of copper chromite reduction becomes high at temperatures above 473 K.
A V Khasin, I I Simentsova
exaly +2 more sources
Journal of Catalysis, 1966
The copper chromite catalyst is used in the reduction of fatty esters into higher alcohols. In this reaction the copper chromite catalyst, CuO/CuCr2O4 * , is reduced to Cu/Cr2O3 * by hydrogen. In this reduction a part of the water formed is adsorbed onto the catalyst and gives Cu/Cr2O3. (H2O)ad.
B MIYA, F HOSHINO, I IWASA
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The copper chromite catalyst is used in the reduction of fatty esters into higher alcohols. In this reaction the copper chromite catalyst, CuO/CuCr2O4 * , is reduced to Cu/Cr2O3 * by hydrogen. In this reduction a part of the water formed is adsorbed onto the catalyst and gives Cu/Cr2O3. (H2O)ad.
B MIYA, F HOSHINO, I IWASA
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Selective hydrogenation on copper chromite catalysts
Applied Catalysis, 1986Abstract Reactions of various allylic alcohols were studied on a copper chromite catalyst. Three different reactions were observed: hydrogenation, isomerization and deoxygenation. By comparison with some other model compounds such as butanol, butanone and butadiene, analysis of the mechanism of the deoxygenation process suggests that, in fact, this ...
V. Reactions of allylic alcohols +3 more
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Adsorption of hydrogen on reduced copper chromite
Reaction Kinetics and Catalysis Letters, 2003Temperature programmed desorption and volumetric methods in static conditions were used to study hydrogen adsorption on the surface of metallic copper particles produced by the partial reduction of copper chromite CuCr2O4 with hydrogen. In the temperature range 300-573 K and in the range of medium surface coverages by hydrogen, the main state of ...
I. I. Simentsova +3 more
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2001
[12053-18-8] Cr2Cu2O5 (MW 311.07) InChI = 1S/2Cr.2Cu.5O InChIKey = JGDFBJMWFLXCLJ-UHFFFAOYSA-N [91-22-5] C9H7N (MW 129.16) InChI = 1S/C9H7N/c1-2-6-9-8(4-1)5-3-7-10-9/h1-7H InChIKey = SMWDFEZZVXVKRB-UHFFFAOYSA-N (decarboxylation catalyst) Physical Data: see the entries for Copper Chromite and Quinoline. Form
Edward J. Parish, Stephen Kizito
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[12053-18-8] Cr2Cu2O5 (MW 311.07) InChI = 1S/2Cr.2Cu.5O InChIKey = JGDFBJMWFLXCLJ-UHFFFAOYSA-N [91-22-5] C9H7N (MW 129.16) InChI = 1S/C9H7N/c1-2-6-9-8(4-1)5-3-7-10-9/h1-7H InChIKey = SMWDFEZZVXVKRB-UHFFFAOYSA-N (decarboxylation catalyst) Physical Data: see the entries for Copper Chromite and Quinoline. Form
Edward J. Parish, Stephen Kizito
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Character of hydrogen interaction with copper chromite
Reaction Kinetics & Catalysis Letters, 1996Hydrogen bonding kinetics have been studied and water amounts produced in H2 interaction with copper chromite CuCr2O4 determined. Two possible interaction mechanisms are suggested: (1) a mechanism involving solid phase oxygen accompanied by water formation; (2) direct redox copper displacement from chromite by hydrogen that requires no oxygen ...
I. I. Simentsova +2 more
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Reversible adsorption of thiophene on copper chromite
Journal of Chemical Technology and Biotechnology. Chemical Technology, 1983AbstractAdsorption isotherms of thiophene on copper chromite catalyst have been obtained under catalytic conditions using the gas chromatographic technique. The isotherms were found to follow the Freundlich adsorption equation. The isosteric heat of adsorption has been determined from the isotherms and found to be dependent on surface coverage.
S. D. Sansare +2 more
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Interaction of hydrogen with copper chromite surface
Reaction Kinetics & Catalysis Letters, 1994Kinetics of the surface reduction of copper chromite, CuCr2O4, with molecular hydrogen has been studied. H2S transformation proceeds with participation of copper reduced states, probably Cu0, formed as a result of surface reaction. Process kinetics has a topochemical character.
A. V. Khasin +2 more
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Lithium intercalation into copper ferrite and copper chromite: Redox extraction of copper
Materials Research Bulletin, 1992Abstract From Mossbauer measurements we have shown that during lithium intercalation into copper ferrite no reduction of iron occurs, which means that the electronic transfer concerns copper. Copper chromite behaves in a similar way: the intercalation-induced reduction of copper results in its extraction from the structure as Cu 0 , which can then be
Laure Monconduit +3 more
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