Solid frustrated-Lewis-pair catalysts constructed by regulations on surface defects of porous nanorods of CeO2

Nature Communications
Sai ZhangYongquan Qu

Abstract

Identification on catalytic sites of heterogeneous catalysts at atomic level is important to understand catalytic mechanism. Surface engineering on defects of metal oxides can construct new active sites and regulate catalytic activity and selectivity. Here we outline the strategy by controlling surface defects of nanoceria to create the solid frustrated Lewis pair (FLP) metal oxide for efficient hydrogenation of alkenes and alkynes. Porous nanorods of ceria (PN-CeO2) with a high concentration of surface defects construct new Lewis acidic sites by two adjacent surface Ce3+. The neighbouring surface lattice oxygen as Lewis base and constructed Lewis acid create solid FLP site due to the rigid lattice of ceria, which can easily dissociate H-H bond with low activation energy of 0.17 eV.

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Citations

May 29, 2018·Chemical Society Reviews·Yuanyuan MaYongquan Qu
Jul 25, 2018·Advanced Materials·Wenjing XuYadong Yin
Jul 28, 2018·Advanced Materials·Max J HülseyNing Yan
May 16, 2019·Angewandte Chemie·Lu WangGeoffrey A Ozin
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Jun 19, 2018·Chemical Science·Long WangGerhard Erker
Oct 9, 2020·Advanced Materials·Yao ZhouJiacheng Wang
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Feb 2, 2021·The Journal of Physical Chemistry Letters·Siqin ZhaoXinhe Bao
Oct 28, 2019·Journal of Colloid and Interface Science·Zhongqi LiuRuigang Wang
Apr 1, 2021·Nature Communications·Matthias S FreiJavier Pérez-Ramírez
Jun 3, 2021·Journal of the American Chemical Society·Guangchao LiShik Chi Edman Tsang
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Dec 8, 2021·Journal of the American Chemical Society·Qiang DengShik Chi Edman Tsang

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Methods Mentioned

BETA
neutron diffraction
X-ray

Software Mentioned

Ceria
Vienna Ab - initio Simulation Package

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