双金属
催化作用
蒸汽重整
制氢
材料科学
化学
乙醇
冶金
生物化学
作者
Hao Meng,Yusen Yang,Tianyao Shen,Wei Liu,Lei Wang,Ping Yin,Ren Z,Yiming Niu,Bingsen Zhang,Lirong Zheng,Hong Yan,Jian Zhang,Feng‐Shou Xiao,Min Wei,Xue Duan
标识
DOI:10.1038/s41467-023-38883-x
摘要
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.
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