3 years ago

Excellent Selectivity with High Conversion in the Semihydrogenation of Alkynes using Palladium-Based Bimetallic Catalysts

Excellent Selectivity with High Conversion in the Semihydrogenation of Alkynes using Palladium-Based Bimetallic Catalysts
Changyan Cao, Chang Liu, Weiguo Song, Yanan Zhu, Jian Liu, Xiaoshi Wang
A series of active-carbon-supported PdPb and PdCu bimetal catalysts were prepared for the selective semihydrogenation of alkynes in the liquid phase. The Pd0.33Pb0.67/C catalyst showed the best performance for various alkynes under mild reaction conditions (room temperature and ambient H2 pressure) and achieved 100 % conversion with 98 % selectivity to alkenes. In particular, over-hydrogenation was avoided at complete alkyne conversion. Targeted selection: Active-carbon-supported PdPb and PdCu bimetal catalysts are prepared and used in the selective semihydrogenation of alkynes in the liquid phase. The best catalyst, Pd0.33Pb0.67/C, is able to achieve 100 % alkyne conversion with 98 % selectivity to the desired alkene. In particular, over-hydrogenation is completely avoided at full alkyne conversion.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/cctc.201700800

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