| 光谱学与光谱分析 |
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| Spectroscopic Study of Photocatalytic Mechanism of Methanol and CO2 |
| HAI Feng1,2, ZHANG Qian-cheng1*, BAI Feng-rong3, WANG A-nan1, WANG Zhi-wei1, JIAN Li1 |
1. Inner Mongolia Key Lab of Industrial Catalysis, Inner Mongolia University of Technology, Huhhot 010051, China
2. The 253 Hospital of P.L.A., Huhhot 010051, China
3. Inner Mongolia Vocational College of Chemical Engineering, Huhhot 010070, China |
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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.
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Received: 2011-03-13
Accepted: 2011-06-28
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Corresponding Authors:
ZHANG Qian-cheng
E-mail: jzhang@imut.edu.cn
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