| Conversion of Non-a-Tocopherols to a-Tocopherol in a Fixed Bed Reactor |
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| 引用本文： | 陈明,吴彩娟,任其龙,杨亦文,黄梅. Conversion of Non-a-Tocopherols to a-Tocopherol in a Fixed Bed Reactor[J]. 中国化学工程学报, 2004, 0(4) |
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| 作者姓名： | 陈明 吴彩娟 任其龙 杨亦文 黄梅 |
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| 作者单位： | National Laboratory of Secondary Resources Chemical Engineering，Zhejiang University，Hangzhou 310027，China，National Laboratory of Secondary Resources Chemical Engineering，Zhejiang University，Hangzhou 310027，China，National Laboratory of Secondary Resources Chemical Engineering，Zhejiang University，Hangzhou 310027，China，National Laboratory of Secondary Resources Chemical Engineering，Zhejiang University，Hangzhou 310027，China，National Laboratory of Secondary Resources Chemical Engineering，Zhejiang University，Hangzhou 310027，China |
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| 基金项目： | the Natural Science Foundation of Zhejiang Province (001103231-01-02). |
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| 摘 要： | Since a-tocopherol has special biological and nutritional activities, it is important to convert non-a-tocopherols to a-tocopherol. This paper focuses on the effects of residence time, pressure, temperature and the mass ratio of formaldehyde to tocopherols on the content of a-tocopherol, the conversion of non-a-tocopherols, the selectivity and yield of a-tocopherol in a fixed-bed reactor. The reactor is made from φ12 (I.D.)×360mm stainless steel pipe. It is packed with a mixture of 5% Pd/C and cation exchange resin catalysts. Preliminary results indicated the suitable operation conditions are pressure 5.0 MPa, temperature 180℃, and mass ratio of formaldehyde to tocopherols 2.0. A product of more than 50% a-tocopherol content has been obtained by using 88.85% mixed tocopherols as raw material.
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Conversion of Non-a-Tocopherols to a-Tocopherol in a Fixed Bed Reactor |
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| CHEN Ming WU Caijuan REN QilongYANG Yiwen HUANG MeiNational Laboratory of Secondary Resources Chemical Engineering,Zhejiang University,Hangzhou ,China. Conversion of Non-a-Tocopherols to a-Tocopherol in a Fixed Bed Reactor[J]. Chinese Journal of Chemical Engineering, 2004, 0(4) |
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| Authors: | CHEN Ming WU Caijuan REN QilongYANG Yiwen HUANG MeiNational Laboratory of Secondary Resources Chemical Engineering Zhejiang University Hangzhou China |
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| Affiliation: | CHEN Ming WU Caijuan REN QilongYANG Yiwen HUANG MeiNational Laboratory of Secondary Resources Chemical Engineering,Zhejiang University,Hangzhou 310027,China |
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| Abstract: | |
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| Keywords: | tocopherol fixed bed reactor conversion |
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