Highly Productive Propane Dehydrogenation Catalyst Using Silica-Supported Ga-Pt Nanoparticles Generated from Single-Sites

Journal of the American Chemical Society
Keith SearlesChristophe Copéret

Abstract

The development of more effective alkane dehydrogenation catalysts is a key technological challenge for the production of olefins from shale gas, an abundant source of light hydrocarbons. Surface organometallic chemistry provides an original approach to generate nanometric Ga-Pt bimetallic particles supported on partially dehydroxylated silica containing gallium single-sites, which displays high activity, selectivity, and stability in propane dehydrogenation. This catalyst was prepared via sequential grafting of a platinum precursor onto silica possessing site-isolated gallium sites followed by H2 reduction. Monitoring generation of the reduced species, Gaδ+Pt0/SiO2, via in situ X-ray absorption spectroscopy reveals formation of a Ga xPt (0.5 < x < 0.9) alloy with a fraction of gallium remaining as isolated sites. This bimetallic material exhibits catalytic performance that far surpasses each of the individual components and other reported Ga-Pt based catalysts; this is attributed to the highly dispersed Ga xPt alloyed structure on a support with low Brønsted acidity containing gallium single-sites.

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Citations

Dec 6, 2019·Chemical Record : an Official Publication of the Chemical Society of Japan ... [et Al.]·Guowei WangChunyi Li
Dec 12, 2018·Chemical Communications : Chem Comm·Jorge Mendes-BurakChristophe Copéret
Jan 26, 2021·Chemical Society Reviews·Sai ChenJinlong Gong
Feb 19, 2021·Chemical Society Reviews·Chunyi Li, Guowei Wang
Mar 22, 2021·Journal of Colloid and Interface Science·Yansu WangZhong-Yong Yuan
Mar 27, 2021·Journal of the American Chemical Society·Alexander J BukvicAndrew S Weller
Apr 3, 2021·Science·Hang ZhouFeng-Shou Xiao
Apr 6, 2021·ACS Applied Materials & Interfaces·Bofeng ZhangGuozhu Liu
May 12, 2021·Chemical Society Reviews·Scott R DochertyChristophe Copéret
May 16, 2021·Accounts of Chemical Research·Yuanyuan Li, Anatoly I Frenkel
Oct 16, 2019·Chemical Reviews·Manoja K SamantarayJean-Marie Basset
Jun 28, 2019·Journal of the American Chemical Society·Alasdair I McKayAndrew S Weller
Mar 23, 2019·Journal of the American Chemical Society·Zoha H SyedMassimiliano Delferro
Oct 23, 2020·Journal of the American Chemical Society·Amrit VenkateshAaron J Rossini
May 2, 2020·Chemical Reviews·Yong-Sheng WeiQiang Xu
Aug 31, 2020·Journal of the American Chemical Society·Zhiyuan YangFeng-Shou Xiao
Dec 10, 2021·Journal of the American Chemical Society·Liang QiAlexis T Bell

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