title: [Spectroscopic study of photocatalytic mechanism of methanol and CO2].
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 O==C .--O- and CH3OC(O)* might be important intermediate in the carbonylation of methanol with CO2.
authors.affiliation: Inner Mongolia Key Lab of Industrial Catalysis, Inner Mongolia University of Technology, Huhhot 010051, China. bhaifeng@126.com
authors.forename: Feng
authors.initials: F
authors.lastname: Hai
authors.forename: Qian-cheng
authors.initials: QC
authors.lastname: Zhang
authors.forename: Feng-rong
authors.initials: FR
authors.lastname: Bai
authors.forename: A-nan
authors.initials: AN
authors.lastname: Wang
authors.forename: Zhi-wei
authors.initials: ZW
authors.lastname: Wang
authors.forename: Li
authors.initials: L
authors.lastname: Jian