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  Alumina-Catalyzed Epoxidation with Hydrogen Peroxide: Recycling Experiments and Activity of Sol-Gel Alumina

Cesquini, R., Silva, J., Woitiski, C., Mandelli, D., Rinaldi, R., & Schuchardt, U. (2002). Alumina-Catalyzed Epoxidation with Hydrogen Peroxide: Recycling Experiments and Activity of Sol-Gel Alumina. Advanced Synthesis & Catalysis, 344(8), 911-914. doi:10.1002/1615-4169(200209)344:8<911:AID-ADSC911>3.0.CO;2-T.

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 Creators:
Cesquini, R.G.1, Author
Silva, J.M.S.1, Author
Woitiski, C.B.2, Author
Mandelli, D.1, Author
Rinaldi, Roberto1, 3, Author           
Schuchardt, Ulf1, Author
Affiliations:
1Instituto de Química, Universidade Estadual de Campinas, P.O. Box 6154, 13083-970 Campinas-SP, Brazil Fax: (+55)-19-37883023, ou_persistent22              
2Instituto de Ciências Biológicas e Químicas, Pontifícia Universidade Católica de Campinas, P.O. Box 1111, 13020-904 Campinas-SP, Brazil, ou_persistent22              
3Research Group Rinaldi, Max-Planck-Institut für Kohlenforschung, Max Planck Society, ou_1445617              

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Free keywords: catalyst recycling; catalytic epoxidation; cyclohexene oxide; green chemistry; (S)-limonene oxide; sol-gel-derived alumina
 Abstract: Commercial alumina looses some activity after the first epoxidation reaction of (S)-limonene with hydrogen peroxide, but maintains a good activity and a very high selectivity in the subsequent three reactions. After this its activity is strongly reduced, probably due to structural modifications. Aluminas obtained by sol-gel methods are normally less active than the commercial alumina. However, the use of monomeric aluminum sec-butoxide and of oxalic acid to form stable alumina mesophases allows a very active alumina to be obtained, which catalyses the epoxidation of the less reactive cyclohexene with hydrogen peroxide in 98% yield. Close to 50% of the active oxygen is used up in the formation of molecular oxygen.

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Language(s): eng - English
 Dates: 2002-09-252002-09
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: Advanced Synthesis & Catalysis
  Abbreviation : Adv. Synth. Catal.
Source Genre: Journal
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Publ. Info: Weinheim, Fed. Rep. of Germany : Wiley-VCH Verlag GmbH
Pages: - Volume / Issue: 344 (8) Sequence Number: - Start / End Page: 911 - 914 Identifier: ISSN: 1615-4150
CoNE: https://pure.mpg.de/cone/journals/resource/958634688013