Influence of ni addition to a low-loaded palladium catalyst on the selective hydrogenation of 1-heptyne

Química Nova

卷:33

关键词: bimetallic catalysts;    alkyne;    Lindlar;   

DOI  :  10.1590/S0100-40422010000400010

来源: DOAJ

【 摘 要 】

Semi-hydrogenation of alkynes has industrial and academic relevance on a large scale. To increase the activity, selectivity and lifetime of monometallic catalysts, the development of bimetallic catalysts has been investigated. 1-Heptyne hydrogenation over low-loaded Pd and Ni monometallic and PdNi bimetallic catalysts was studied in liquid phase at mild conditions. XPS results suggest that nickel addition to Pd modifies the electronic state of palladium as nickel loading is increased. Low-loaded Pd catalysts showed the highest selectivities (> 95%). The most active prepared catalyst, PdNi(1%), was more selective than the Lindlar catalyst.

【 授权许可】

Unknown