Olefin epoxidation with hydrogen peroxide using octamolybdate-based self-separating catalysts

Mo sub(8)O sub(26) super(4-) based organic polyoxomolybdate salts of general formula [Hmim] sub(4)Mo sub(8)O sub(26) (Hmim = 1-hexyl-3-methylimidazolium), [Dhmim] sub(4)Mo sub(8)O sub(26) (Dhmim = 1,2-dimethyl-3-hexylimidazolium) and [Hpy] sub(4)Mo sub(8)O sub( 26).H sub(2)O (Hpy = 1-hexylpyridinium...

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Bibliographic Details
Published in:Green chemistry : an international journal and green chemistry resource : GC 2015-02, Vol.17 (2), p.1186-1193
Main Authors: Zhou, Ming-Dong, Liu, Mei-Ju, Huang, Liang-Liang, Zhang, Jian, Wang, Jing-Yun, Li, Xue-Bing, Kuehn, Fritz E, Zang, Shu-Liang
Format: Article
Language:English
Subjects:
Catalysis
Catalysts
Epoxidation
Hydrogen peroxide
Olefins
Oxidants
Oxidizing agents
Recycling
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Summary:Mo sub(8)O sub(26) super(4-) based organic polyoxomolybdate salts of general formula [Hmim] sub(4)Mo sub(8)O sub(26) (Hmim = 1-hexyl-3-methylimidazolium), [Dhmim] sub(4)Mo sub(8)O sub(26) (Dhmim = 1,2-dimethyl-3-hexylimidazolium) and [Hpy] sub(4)Mo sub(8)O sub( 26).H sub(2)O (Hpy = 1-hexylpyridinium) have been prepared and characterized. These compounds were applied as catalysts for olefin epoxidation using hydrogen peroxide (H sub(2)O sub(2)) as oxidant in CH sub(3)CN. The polyoxomolybdate salts exhibit excellent catalytic performance and are also self-separating, a great advantage for catalyst recycling. The catalysts can be reused for at least 10 runs without significant loss of activity.
ISSN:1463-9262
1463-9270
DOI:10.1039/c4gc01411a