甲烷在Rh/SiO_2催化剂表面解离的红外光谱研究  

FT-IR Study of Methane Dissociation on Surface of Rh/SiO_2 Catalyst

作　　者：吴廷华[1] 严前古[2] 张奇能[1] 茆福林[1] 郑卓群[1] 陈飞[1] 翁维正[2] 万惠霖[1] 

机构地区：[1]浙江师范大学物理化学研究所,浙江金华321004 [2]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

出　　处：《催化学报》2004年第12期928-930,共3页

基　　金：国家重点基础研究发展规划 (G19990 2 2 40 8)资助项目

摘　　要：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.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.

关 键 词：甲烷 铑 二氧化硅 负载型催化剂 解离 红外光谱 

分 类 号：O643[理学—物理化学]