期刊
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
卷 266, 期 -, 页码 22-27出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jphotochem.2013.05.018
关键词
Olefins; Iron bipyridine; Zeolite; Hydrogen peroxide; Photooxidation
资金
- National Science Foundation of China [20520120221, 20537010]
- Ministry of Science and Technology of China [2003CB415006]
- Chinese Academy of Sciences
A novel visible light photocatalyst of iron(II) bipyridine complex encapsulated within NaY zeolite for selective oxygenation of styrene with high turnover (1800) and high benzaldehyde selectivity (86%) using hydrogen peroxide as the oxidant under ambient conditions was explored. This photocatalyst was also effective for the oxidation of other olefins, such as 4-cyanostyrene, 4-methoxystyrene, 3-methylstyrene, 1,1-diphenylethylene, cis-stilbene, trans-stilbene, trans-beta-methylstyrene, alpha-methylstyrene, triphenylethylene, 1-octene, 2-octene, cyclohexene and cyclooctene, into the corresponding aldehydes, ketones or olefin oxides. The study shows that the photooxygenation of styrene occurs within the supercages of zeolite Y, the products benzaldehyde and formaldehyde escape into the solution after reaction, leading to high turnovers. Based on the experimental results, the photooxidation mechanism is also discussed. (c) 2013 Elsevier B.V. All rights reserved.
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