文献类型：期刊文献

英文题名：Insights into the role of Mo in boosting CH x * oxidation for CO ₂ methane reforming

作者：Lu, Jiali Shi, Yongyong He, Xiong Zhou, Qiao Li, Ziwei Li, Fei Li, Min

第一作者：Lu, Jiali

通信作者：Li, ZW[1];Li, F[1];Li, M[1]

机构：[1]Guizhou Univ, Sch Chem & Chem Engn, Guizhou Prov Key Lab Green Chem & Clean Energy Tec, Guiyang 550025, Peoples R China;[2]Guizhou Inst Technol, Sch Civil Engn, Guiyang 550025, Peoples R China

第一机构：Guizhou Univ, Sch Chem & Chem Engn, Guizhou Prov Key Lab Green Chem & Clean Energy Tec, Guiyang 550025, Peoples R China

通信机构：corresponding author), Guizhou Univ, Sch Chem & Chem Engn, Guizhou Prov Key Lab Green Chem & Clean Energy Tec, Guiyang 550025, Peoples R China.

年份：2024

卷号：231

外文期刊名：RENEWABLE ENERGY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001266440700001)】；

基金：This work was supported by National Natural Science Foundation of China (22168013, 22279024) , Key Laboratory of Carbon -based Energy Molecular Chemical Utilization Technology in Guizhou Province (2023008) , Natural Science Foundation of Guizhou (ZK [2022] 074) , National Foreign Expert Project (G2023038002L) .

语种：英文

外文关键词：CHx* oxidation; Reaction route; Mo/Niphy@SiO2; Core shell; CO2 reforming of methane

摘要：CH x * oxidation is one of the most vital routes to alleviate the carbon deposition problem of CO 2 reforming of methane (DRM) reaction. Whereas, little experimental evidence has been observed on NiMo catalysts where the CH x * oxidation was dominant over its dissociation reaction. Herein, to experimentally unveil the CH x * oxidation route of NiMo catalysts, we design three catalysts with different particle sizes and structures. Among them, Mo/ Niphy@SiO 2 core shell catalyst demonstrated the dominant CH x * oxidation route over its dissociation based on in-situ diffuse reflectance infrared Fourier transform spectroscopy experiments. This was attributed to the confinement effect of SiO 2 and the formation of Ni -Mo alloy, inhibiting the CH x * dissociation reaction. It exhibited relatively stable CH 4 and CO 2 conversions (77 % and 75 % respectively) within 180 h. By contrast, on Mo/Niphy catalyst which has a big Ni size, CH x * was mainly dissociated to C* and oxidized to CO which further underwent a disproportion reaction to produce CO 2 and C*, leading to the severe carbon deposition and unstable DRM performance. The strategy to unveil the dominant role of CH x * oxidation via design catalysts with different sizes and structures sheds light on the study of reaction mechanism of other reactions.