Gold catalysts containing interstitial carbon atoms boost hydrogenation activity

Yafei Sun, Yueqiang Cao, Lili Wang, Xiaotong Mu, Qingfei Zhao, Rui Si, Xiaojuan Zhu, Shangjun Chen, Bingsen Zhang, Chen De and Ying Wan ()
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Yafei Sun: Shanghai Normal University
Yueqiang Cao: East China University of Science and Technology
Lili Wang: Shanghai Normal University
Xiaotong Mu: Shanghai Normal University
Qingfei Zhao: Shanghai Normal University
Rui Si: Chinese Academy of Sciences
Xiaojuan Zhu: Shanghai Normal University
Shangjun Chen: Shanghai Normal University
Bingsen Zhang: Chinese Academy of Sciences
Chen De: Norwegian University of Science and Technology
Ying Wan: Shanghai Normal University

Nature Communications, 2020, vol. 11, issue 1, 1-9

Abstract: Abstract Supported gold nanoparticles are emerging catalysts for heterogeneous catalytic reactions, including selective hydrogenation. The traditionally used supports such as silica do not favor the heterolytic dissociation of hydrogen on the surface of gold, thus limiting its hydrogenation activity. Here we use gold catalyst particles partially embedded in the pore walls of mesoporous carbon with carbon atoms occupying interstitial sites in the gold lattice. This catalyst allows improved electron transfer from carbon to gold and, when used for the chemoselective hydrogenation of 3-nitrostyrene, gives a three times higher turn-over frequency (TOF) than that for the well-established Au/TiO2 system. The d electron gain of Au is linearly related to the activation entropy and TOF. The catalyst is stable, and can be recycled ten times with negligible loss of both reaction rate and overall conversion. This strategy paves the way for optimizing noble metal catalysts to give an enhanced hydrogenation catalytic performance.

Date: 2020
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DOI: 10.1038/s41467-020-18322-x

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