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题名: Effects of Calcium and Vanadium Ions on the Epoxidation of Cyclohexene with H2O2 Catalyzed by Vanadium Bromoperoxidase
作者: Zhang Biaoming1, 2;  Cao Xupeng1;  Xue Song1;  Xiao Tonghu3;  Zhang Wei1, 4
关键词: bromoperoxidase ;  calcium ion ;  vanadium ion ;  cyclohexene ;  hydrogen peroxide ;  epoxidation ;  epoxycyclohexane
刊名: CHINESE JOURNAL OF CATALYSIS
发表日期: 2010-10-01
DOI: 10.3724/SP.J.1088.2010.00438
卷: 31, 期:10, 页:1293-1299
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Applied ;  Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Vanadium bromoperoxidase (V-BPO) from a marine macro-alga Corallina officinalis can catalyze the epoxidation of cyclohexene in the presence of KBr to form epoxycyclohexane using H2O2 as the oxidant. A process intensification strategy has been developed by the integration of V-BPO pretreatment, continuous feeding of H2O2, and optimizing reaction conditions in order to improve the epoxidation productivity. The BPO activity and thermostability increased significantly when the V-BPO solution was dialyzed with a buffer containing 1.0 mmol/L vanadium ion and 1.0 mmol/L calcium ion. The apparent enzyme activity was improved when the H2O2 was fed continuously using a constant flow pump. When combined with the optimal reaction conditions (including buffer, pH, temperature, enzyme concentration, and KBr and H2O2 concentrations), the space-time yield of epoxycyclohexane and its yield to hydrogen peroxide reached 4.79 g/(L.h) and 74%, respectively. These values are 78% increasing than the highest values reported previously.
关键词[WOS]: CORALLINA-PILULIFERA ;  ORGANIC-SYNTHESIS ;  HALOPEROXIDASES ;  CHLOROPEROXIDASE ;  OXIDATION ;  BROMINATION ;  PEROXIDASES ;  STABILITY
语种: 英语
WOS记录号: WOS:000284388000018
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141976
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Liaoning, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Ningbo Univ, Fac Mat Sci & Chem Engn, Ningbo 315211, Zhejiang, Peoples R China
4.Flinders Univ S Australia, Flinders Ctr Marine Bioproc & Bioprod, Adelaide, SA 5042, Australia

Recommended Citation:
Zhang Biaoming,Cao Xupeng,Xue Song,et al. Effects of Calcium and Vanadium Ions on the Epoxidation of Cyclohexene with H2O2 Catalyzed by Vanadium Bromoperoxidase[J]. CHINESE JOURNAL OF CATALYSIS,2010,31(10):1293-1299.
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