甲醇在γ-Al_2O_3,CeO_2及其负载Pd催化剂上吸附和分解的原位红外光谱研究  

In-Situ IR Study of Adsorption and Decomposition of Methanol on γAl_2O_3, CeO_2 and Their Supported Pd Catalysts

作　　者：杨成[1] 董庆年[1] 任杰[1] 孙予罕[1] 

机构地区：[1]中国科学院山西煤炭化学研究所

出　　处：《光谱学与光谱分析》2004年第7期810-812,共3页Spectroscopy and Spectral Analysis

基　　金：国家杰出青年基金 (97460 9);山西省青年基金 (991 0 1 0 )资助项目

摘　　要：利用原位傅里叶变换红外光谱 (FTIR)技术对甲醇在γ Al2 O3,CeO2 以及Pd/Al2 O3,Pd/CeO2 催化剂上的吸附和分解行为进行了研究。综合考虑了载体和活性组分的作用 ,分析了甲醇在不同载体负载Pd催化剂上可能的分解途径。在Pd/CeO2 催化剂上 ,活性组分和载体对甲醇分解的过程表现出了一种协同效应。The adsorption and decomposition of methanol on γ-Al 2O 3 and CeO 2 supports, and Pd/Al 2O 3 and Pd/CeO 2 catalysts were studied by in-situ FTIR technique. The possible pathway of methanol decomposition on Pd/Al 2O 3 and Pd/CeO 2 catalysts was analyzed according to the interaction of Pd and the supports. Methanol was dehydrogenated into DME or decomposed towards CO and H 2 over different active phase on Pd/Al 2O 3 catalyst. A synergistic effect between Pd and CeO 2 on the activity of Pd/CeO 2 catalyst for methanol decomposition was proved.

关 键 词：甲醇 Γ-氧化铝 二氧化铈 负载钯催化剂 原位傅里叶变换红外光谱 吸附行为 分解行为 协同效应 

分 类 号：O623.411[理学—有机化学]