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- Title
A strong bimetal-support interaction in ethanol steam reforming.
- Authors
Meng, Hao; Yang, Yusen; Shen, Tianyao; Liu, Wei; Wang, Lei; Yin, Pan; Ren, Zhen; Niu, Yiming; Zhang, Bingsen; Zheng, Lirong; Yan, Hong; Zhang, Jian; Xiao, Feng-Shou; Wei, Min; Duan, Xue
- 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. Ethanol steam reforming (ESR) reaction is an environmentally benign and sustainable route for H2 production. Herein, the authors demonstrate a conceptional strategy for rational design and preparation of highly-efficient catalyst toward ESR via an RhNi-TiO2 strong bimetal-support interaction.
- Subjects
STEAM reforming; HETEROGENEOUS catalysts; INTERFACE structures; ETHANOL; CHEMICAL yield; CATALYSIS
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-38883-x