期刊
CHEMNANOMAT
卷 4, 期 5, 页码 472-476出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cnma.201800022
关键词
cerium; chemoselectivity; gold; heterogeneous catalysis; palladium; semihydrogenation
资金
- China Postdoctoral Science Foundation [2017 M620453]
- National 1000-Plan program
- Cyrus Tang Foundation through Tang Scholar program
- National Supercomputer Center in Tianjin
Chemoselective semihydrogenation of alkynes to alkenes is a significant organic transformation and long challenge for heterogeneous catalysts. Herein, the PdAu alloyed nanoparticles were successfully deposited on the surface of cerium(IV) oxide nanorods (NR-CeO2) through an electroless chemical deposition process. Alloyed catalysts had an enhanced catalytic activity for hydrogenation of phenylacetylene and improved selectivity towards styrene, compared with the Pd/NR-CeO2 and Au/NR-CeO2 catalysts. The enhanced catalytic activity can be attributed to the alloying effects. Furthermore, the weak adsorption of styrene obtained from the modulated surface characteristics also benefits the improved chemoselectivity.
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