甲醇与CO2光催化反应机理的谱学研究  

Spectroscopic Study of Photocatalytic Mechanism of Methanol and CO_2

作　　者：海锋[1,2] 张前程[1] 白风荣[3] 王阿囡[1] 王志伟[1] 简丽[1] 

机构地区：[1]内蒙古自治区工业催化重点实验室,内蒙古工业大学,内蒙古呼和浩特010051 [2]解放军第253医院,内蒙古呼和浩特010051 [3]内蒙古化工职业学院,内蒙古呼和浩特010070

出　　处：《光谱学与光谱分析》2011年第12期3323-3327,共5页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(20966006);内蒙古自治区自然科学基金项目(2009MS0602);内蒙古自治区人才基金项目(2007)资助

摘　　要：采用浸渍法制备了Ni-Ti-O/SiO2催化剂,在紫外光照射下,考察了甲醇和CO2光催化羰基化反应性能,并通过原位红外光谱,XPS和MS等表征分析了可能的反应机理。实验结果表明,Ni-Ti-O/SiO2催化剂对甲醇和CO2光催化作用较显著,在180min反应时间内,甲醇的转化率达到了24.9%,羰基化产物的选择性超过了60%;结合催化剂表征结果推断,O-C.-O-和CH3OC(O).或许是甲醇和CO2羰基化反应的重要中间体。Ni-Ti-O/SiO2 catalyst was prepared by impregnation method,and its photocatalytic performance for carbonylation ofmethanol with CO2was investigated under UV light.The in-situIR,XPS and MS were carried out to analyze the possible pho-tocatalytic reaction mechanism.Results indicated that the Ni-Ti-O/SiO2exhibited good photocatalytic performance for carbonyla-tion of methanol with CO2,the methanol conversion reached up to 24.9%,and the selectivity for the carbonylated products wasmore than 60% within 180min reaction time.The catalyst characterization results showed that the O C. O-and CH3OC（O）.might be important intermediate in the carbonylation of methanol with CO2.

关 键 词：光催化 羰基化 光谱 机理 

分 类 号：O643[理学—物理化学]