光谱学与光谱分析, 2011, 31 (12): 3323, 网络出版: 2012-01-05
甲醇与CO2光催化反应机理的谱学研究
Handbook of X-ray Photoelectron Spectroscopy. Minnesota: Perkin-Elmer Corporation Press, 1979. 91. Spectroscopic Study of Photocatalytic Mechanism of Methanol and CO2
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180 min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, OC·O-和CH3OC(O)·或许是甲醇和CO2羰基化反应的重要中间体。
Abstract
Ni-Ti-O/SiO2 catalyst was prepared by impregnation method, and its photocatalytic performance for carbonylation of methanol with CO2 was investigated under UV light. The in-situ IR, XPS and MS were carried out to analyze the possible photocatalytic reaction mechanism. Results indicated that the Ni-Ti-O/SiO2 exhibited good photocatalytic performance for carbonylation of methanol with CO2, the methanol conversion reached up to 24.9%, and the selectivity for the carbonylated products was more than 60% within 180 min reaction time. The catalyst characterization results showed that the OC·O- and CH3OC(O)· might be important intermediate in the carbonylation of methanol with CO2.
海锋, 张前程, 白风荣, 王阿囡, 王志伟, 简丽. 甲醇与CO2光催化反应机理的谱学研究[J]. 光谱学与光谱分析, 2011, 31(12): 3323. HAI Feng, ZHANG Qian-cheng, BAI Feng-rong, WANG A-nan, WANG Zhi-wei, JIAN Li. Handbook of X-ray Photoelectron Spectroscopy. Minnesota: Perkin-Elmer Corporation Press, 1979. 91. Spectroscopic Study of Photocatalytic Mechanism of Methanol and CO2[J]. Spectroscopy and Spectral Analysis, 2011, 31(12): 3323.