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Pairwise Semi-Hydrogenation of Alkyne to Cis-Alkene on Platinum-Tin Intermetallic Compounds

Abstract

The molecular basis for the high cis-alkene selectivity over intermetallic PtSn for alkyne semi-hydrogenation is demonstrated. Unlike the universal assumption that the bimetallic surface is saturated with atomic hydrogen, molecular hydrogen has a higher barrier for dissociative adsorption on intermetallic PtSn due to the deficiency of platinum three-fold sites. The resulting molecular behavior of adsorbed hydrogen on intermetallic PtSn nanoparticles leads to pairwise-hydrogenation of three alkynes to the corresponding cis-alkenes, satisfying both high stereoselectivity and high chemoselectivity.

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Article information


Submitted
03 Feb 2020
Accepted
24 Mar 2020
First published
25 Mar 2020

This article is Open Access

Nanoscale, 2020, Accepted Manuscript
Article type
Paper

Pairwise Semi-Hydrogenation of Alkyne to Cis-Alkene on Platinum-Tin Intermetallic Compounds

Y. Pei, M. Chen, X. Zhong, T. Y. Zhao, M. Ferrer, R. V. Maligal-Ganesh, T. Ma, B. Zhang, Z. Qi, L. Zhou, C. Bowers, C. Liu and W. Huang, Nanoscale, 2020, Accepted Manuscript , DOI: 10.1039/D0NR00920B

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