过渡金属氧化物掺杂对铜锰氧化物催化CO氧化性能的影响  

The effect of doping transition metal oxides on copper manganese oxides for the catalytic oxidation of CO

作　　者：蔡丽娜[1] 胡臻皓 Peter Branton 李文翠[1] 

机构地区：[1]大连理工大学化工学院精细化工国家重点实验室,辽宁大连116024 [2]英美联合烟草公司研发中心

出　　处：《催化学报》2014年第2期159-167,共9页

基　　金：中央高校基本科研业务费专项资金(DUT12ZD218);高等学校博士学科点专项科研基金(20100041110017)~~

摘　　要：以乙酸铜和乙酸锰为铜锰前驱体,以NH4HCO3为沉淀剂,相应金属硝酸盐为掺杂剂,采用共沉淀法制备了不同过渡金属氧化物掺杂的铜锰氧化物催化剂.采用N2物理吸附、X射线衍射,氢气-程序升温还原和原位红外漫反射光谱等方法对催化剂进行了表征,考察了系列催化剂上CO反应性能.结果表明,掺杂过渡金属氧化物可以调变催化剂对CO的吸附能力,进而影响催化剂性能.A series of copper manganese oxides doped with transition metal oxides were prepared by co-precipitation using copper acetate and manganese acetate as precursors, ammonium bicarbonate as precipitant, and metal nitrates as dopants. The catalysts were characterized by N2 adsorption-desorption, X-ray powder diffraction, temperature-programmed reduction, and in situ diffuse reflectance infrared Fourier transform spectroscopy. The results showed that doping transition metal oxides into copper manganese oxides can modify the CO adsorption ability of the catalyst and thus affect the catalytic oxidation of CO.

关 键 词：铜锰氧化物 过渡金属氧化物 掺杂 一氧化碳氧化 原位红外漫反射光谱 

分 类 号：O643.32[理学—物理化学]