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上传于：2018-04-04

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    188宝金博页面版: Hydrogen Peroxide in Green Oxidation Reactions： Recent Catalytic Processes

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    内容提示： HYDROGEN PEROXIDE IN GREEN OXIDATION REACTIONS: ANDREA GOTI* AND FRANCESCA CARDONA Dipartimento di Chimica Organica “Ugo Schiff” HeteroBioLab, Università di Firenze, via della Lastruccia 13, Email: andrea.goti@unifi.it *To whom correspondence should be addressed. 1. Introduction Oxidation reactions are among the most numerous and useful of the Indus-trial processes and, at the same time, the most hazardous and polluting ones. They often occur with high E-factor, defined by Sheldon as the mass of wa...

    文档格式：PDF | 页数：22 | 浏览次数：238 | 上传日期：2018-04-04 18:36:10 | 文档星级：
    HYDROGEN PEROXIDE IN GREEN OXIDATION REACTIONS: ANDREA GOTI* AND FRANCESCA CARDONA Dipartimento di Chimica Organica “Ugo Schiff” HeteroBioLab, Università di Firenze, via della Lastruccia 13, Email: andrea.goti@unifi.it *To whom correspondence should be addressed. 1. Introduction Oxidation reactions are among the most numerous and useful of the Indus-trial processes and, at the same time, the most hazardous and polluting ones. They often occur with high E-factor, defined by Sheldon as the mass of waste, corresponding to all compounds used which are not incorporated in the product, per mass unit of product. 1 Indeed, oxidation reactions often deliver considerable amounts of toxic waste, e.g., metal salts in oxidations carried out with stoichiometric Cr(VI) or Mn(VII) derivatives, or nitrogen oxides from reactions with HNO 3 . In a green chemistry context, it is of paramount importance to develop alternative oxidation methods making use of cleaner oxidants, which minimize the waste, producing only benign waste. Processes occurring under simple and mild conditions should be privileged, also for energy saving issues, and this implies the use of catalysis. 2 RECENT CATALYTIC PROCESSES 191 P. Tundo and V. Esposito (eds.), Green Chemical Reactions.© Springer Science + Business Media B.V. 2008 Keywords: Oxidation, green chemistry, heterogeneous, catalysis, hydrogen peroxide mentally-friendly oxidant because it releases only water as by-product. applications of hydrogen peroxide in epoxidation reactions catalyzed by transition metal catalysts, illustrating both homogeneous and heterogeneous catalysis. An overview of the recent findings in asymmetric catalytic epoxidations is also given. I-50019 Sesto Fiorentino (FI), Italy. for its use in oxidation reactions. This chapter focuses on the recent Abstract: Hydrogen peroxide constitutes a potentially green and environ-Thus, much efforts have been put into the research for ideal conditions

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