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  The cooperative role of zwitterions and phosphotungstate anion in epoxidation reaction

Qiao, Y., Hua, L., Chen, J., Theyssen, N., Leitner, W., & Hou, Z. (2013). The cooperative role of zwitterions and phosphotungstate anion in epoxidation reaction. Journal of Molecular Catalysis A: Chemical, 380, 43-48. doi:10.1016/j.molcata.2013.09.020.

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 Creators:
Qiao, Yunxiang1, 2, Author              
Hua, Li1, Author
Chen, Jizhong1, Author
Theyssen, Nils2, Author              
Leitner, Walter3, 4, Author              
Hou, Zhenshan1, Author
Affiliations:
1Key Laboratory for Advanced Materials, Research Institute of Industrial Catalysis, East China University of Science and Technology, Shanghai 200237, People's Republic of China, ou_persistent22              
2Service Department Theyssen (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445632              
3Service Department Leitner (Technical Labs), Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445626              
4Institut für Technische und Makromolekulare Chemie, Lehrstuhl für Technische Chemie und Petrolchemie, RWTH Aachen, 52064 Aachen, Germany, ou_persistent22              

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Free keywords: Zwitterion; Phosphotungstate; Epoxidation; Surfactant; Emulsion
 Abstract: The combination of a certain zwitterion and sodium phosphotungstate provided an excellent catalyst for the epoxidation of cyclooctene: high TON was available even without any solvents and under ice bath condition. Based on characterizations by 1H, 13C and 31P NMR as well as FT-IR, Raman and UV–vis methods and investigations on the catalytic performance of the binary system, strong cooperative effect between zwitterions and sodium phosphotungstate was demonstrated. Here, the formation of stable W/O emulsion by the amphiphilic zwitterions seems to be crucial, which allows cyclooctene being in sufficient contact with the active phosphotungstate anions in the water phase.

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Language(s): eng - English
 Dates: 2013-09-082013-06-052013-09-152012-09-232013-12
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1016/j.molcata.2013.09.020
 Degree: -

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Title: Journal of Molecular Catalysis A: Chemical
Source Genre: Journal
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Publ. Info: Amsterdam : Elsevier
Pages: 6 Volume / Issue: 380 Sequence Number: - Start / End Page: 43 - 48 Identifier: ISSN: 1381-1169
CoNE: https://pure.mpg.de/cone/journals/resource/954925621184