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甲烷在Rh/SiO₂催化剂表面解离的红外光谱研究

FT-IR Study of Methane Dissociation on Surface of Rh/SiO₂ Catalyst

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【Author】 WU Tinghua 1*, YAN Qiangu2, ZHANG Qineng1, MAO Fulin1, ZHENG Zhuoqun1, CHEN Fei1, WENG Weizheng2, WAN Huilin 1,2*(1 Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, Zhejiang, China; 2 State Key Laboratory for Physical Chemistry of Solid Surfaces, Department of Chemistry, Xiamen University, Xiamen 361005, Fujian, China)

【机构】浙江师范大学物理化学研究所；厦门大学化学系固体表面物理化学国家重点实验室；浙江师范大学物理化学研究所浙江金华321004；福建厦门361005；浙江金华321004；浙江金华321004厦门大学化学系固体表面物理化学国家重点实验室；福建厦门361005；

【Abstract】 FT-IR spectroscopy is employed to investigate the methane dissociation and methane partial oxidation over the Rh/SiO 2 catalyst. When CH 4 is adsorbed onto the catalyst surface, it dissociates into adsorbed CH x (x=1～3) and atomic hydrogen on Rh surface. Atomic hydrogen can diffuse from Rh surface to SiO 2 surface where a proton exchange reaction of H with the surface Si-OH occurs, or it reacts with the lattice oxygen of SiO 2 to form new Si-OH.更多还原