We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Pd-Cu catalysts from acetate complexes in liquid-phase diphenylacetylene hydrogenation.
- Authors
Markov, P.; Bragina, G.; Baeva, G.; Tkachenko, O.; Mashkovsky, I.; Yakushev, I.; Kozitsyna, N.; Vargaftik, M.; Stakheev, A.
- Abstract
Properties of Pd-Cu/AlO catalysts prepared using PdCu(CHCO) acetate heteronuclear complexes as precursors in the liquid-phase diphenylacetylene (DPA) hydrogenation have been studied. It has been established that the reaction over the Pd-Cu/AlO catalyst proceeds more selectively than over the commercial Lindlar catalyst; in addition, high activity is achieved at a substantially lower palladium content. The maximum selectivity of DPA hydrogenation is observed with the catalyst reduced in a hydrogen atmosphere without any intermediate calcination that can result in the destruction of the bimetallic acetate complex. FTIR spectroscopy data for adsorbed CO show that the high selectivity of hydrogenation is due to the formation of homogeneous Pd-Cu particles and to the absence of monometallic palladium particles. This can be explained by the retention of the initial complex structure at all of the catalyst preparation stages until the formation of bimetallic particles during hydrogenation.
- Subjects
PALLADIUM catalysts; METAL complexes; DIPHENYLACETYLENE; HYDROGENATION; ACETATES
- Publication
Kinetics & Catalysis, 2015, Vol 56, Issue 5, p591
- ISSN
0023-1584
- Publication type
Article
- DOI
10.1134/S0023158415050122