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- Title
Synergism of the catalytic effect of nanosized gold-nickel catalysts in the reaction of selective acetylene hydrogenation to ethylene.
- Authors
Nikolaev, S.; Smirnov, V.; Vasil’kov, A.; Podshibikhin, V.
- Abstract
Gold and nickel nanoclusters immobilized on aluminum oxide exhibited high activity in the reaction of acetylene hydrogenation to ethylene with molecular hydrogen at temperatures from 20 to 64°C. The reaction selectivity on Au-Ni nanocomposites with metal concentrations from 0.02 to 0.36 wt % was no lower than 99.99%, and the stability of catalysts was retained for at least 12 h. The simultaneous presence of gold and nickel in the systems resulted in the synergism of their catalytic effects: acetylene conversion on layer-by-layer immobilized metal clusters was higher than the total conversion on individual gold and nickel clusters. The dependence of the conversion of acetylene on bimetallic catalysts on the Au : Ni ratio exhibited an extremal character.
- Subjects
ACETYLENE; HYDROGENATION; ETHYLENE; NICKEL catalysts; GOLD; METAL clusters; ALUMINUM oxide; REACTION mechanisms (Chemistry)
- Publication
Kinetics & Catalysis, 2010, Vol 51, Issue 3, p375
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158410030080