A strong bimetal-support interaction in ethanol steam reforming

Hao Meng, Yusen Yang (), Tianyao Shen, Wei Liu, Lei Wang, Pan Yin, Zhen Ren, Yiming Niu, Bingsen Zhang, Lirong Zheng, Hong Yan, Jian Zhang (), Feng-Shou Xiao (), Min Wei () and Xue Duan
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Hao Meng: Beijing University of Chemical Technology
Yusen Yang: Beijing University of Chemical Technology
Tianyao Shen: Beijing University of Chemical Technology
Wei Liu: Beijing University of Chemical Technology
Lei Wang: Beijing University of Chemical Technology
Pan Yin: Beijing University of Chemical Technology
Zhen Ren: Beijing University of Chemical Technology
Yiming Niu: Chinese Academy of Sciences
Bingsen Zhang: Chinese Academy of Sciences
Lirong Zheng: Chinese Academy of Sciences
Hong Yan: Beijing University of Chemical Technology
Jian Zhang: Beijing University of Chemical Technology
Feng-Shou Xiao: Beijing University of Chemical Technology
Min Wei: Beijing University of Chemical Technology
Xue Duan: Beijing University of Chemical Technology

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract The metal-support interaction (MSI) in heterogeneous catalysts plays a crucial role in reforming reaction to produce renewable hydrogen, but conventional objects are limited to single metal and support. Herein, we report a type of RhNi/TiO2 catalysts with tunable RhNi-TiO2 strong bimetal-support interaction (SBMSI) derived from structure topological transformation of RhNiTi-layered double hydroxides (RhNiTi-LDHs) precursors. The resulting 0.5RhNi/TiO2 catalyst (with 0.5 wt.% Rh) exhibits extraordinary catalytic performance toward ethanol steam reforming (ESR) reaction with a H2 yield of 61.7%, a H2 production rate of 12.2 L h−1 gcat−1 and a high operational stability (300 h), which is preponderant to the state-of-the-art catalysts. By virtue of synergistic catalysis of multifunctional interface structure (Rh-Niδ−-Ov-Ti3+; Ov denotes oxygen vacancy), the generation of formate intermediate (the rate-determining step in ESR reaction) from steam reforming of CO and CHx is significantly promoted on 0.5RhNi/TiO2 catalyst, accounting for its ultra-high H2 production.

Date: 2023
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DOI: 10.1038/s41467-023-38883-x

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