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学科主题: 物理化学
题名: Epoxidation of cyclohexene in t-butyl alcohol/water mixtures catalyzed by vanadium bromoperoxidase from Corallina officinalis
作者: Zhang BM(章表明) ;  Wu PC(吴佩春) ;  Zhang W(张卫)
会议名称: 13th International Biotechnology Symposium and Exhibition
会议日期: 2008-10-12
出版日期: 2008-10-12
会议地点: 中国
通讯作者: 张卫
部门归属: 十八室
主办者: 中国科学院,中国工程院,中国教育部,中国科技部,中国国家发改委
摘要: Current interests in catalytic oxidative transformations in chemical industry are to replace oxidation catalysts that consist of heavy metals, and to develop catalysts with high chemo-, regio- or enantioselectivities (Valery, 2003). Haloperoxidases are potentially suitable biocatalysts to meet these goals (Valery, 2003). In recent years, there is a substantial interest on vanadium bromoperoxidase (VBPO) due to its excellent thermostability, operation stability and broad spectra of substrates such as methyl phenyl ether, 1-methoxylnaphthalenethiophene, indene, organic sulfide, indole terpenes (Valery, 2003; Itoh et al., 1988). In our previous studies we have investigated the epoxidation of cyclohexene to form 1,2- cyclohexane catalyzed by VBPO isolated from the marine red algae Corallina officinalis with a yield of 2.8 g l−1 h−1 and 82% selectivity (Yu et al., 2007). The epoxidationwas performed in awater-organic biphasic solvent system and the solubility of the cyclohexene is too low in water. In this work, t-butyl alcohol was used as a co-solvent in order to enhance the solubility of cyclohexene in water. A final yield of 3.2 g l−1 h−1 of 1,2-cyclohexane with 96% selectivity was achieved. The reaction was completed within 4 h that is shorter than that without co-solvent (6 h). The results indicated that tbutyl alcohol/water (2%, v/v) was an excellent co-solvent system to improve the bio-oxidation efficiency of cyclohexene by VBPO, with further optimization required.
语种: 中文
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内容类型: 会议论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/113094
Appears in Collections:中国科学院大连化学物理研究所_会议论文

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Recommended Citation:
Zhang BM,Wu PC,Zhang W. Epoxidation of cyclohexene in t-butyl alcohol/water mixtures catalyzed by vanadium bromoperoxidase from Corallina officinalis[C]. 见:13th International Biotechnology Symposium and Exhibition. 中国. 2008-10-12.
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