Preparation of natural α-tocopherol from non-α-tocopherols

杨亦文; 闻光东; 吴彩娟; 任其龙; 吴平东

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Preparation of natural α-tocopherol from non-α-tocopherols

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＜正＞Non-a-tocopherols are hydroxymethylated and hydrogenated to produce α-tocopherol in one pot process by simultaneously reacting with paraformaldehyde and hydrogen in the presence of catalysts of benzenesulfonic acid and 5% Pd/C in an autoclave. Effects of various operation conditions have been studied. The preferable reaction conditions are: temperature 180 ℃ to 200 ℃, pressure 5.0 MPa, acid concentration 0.5 g/100 ml ethanol, mass ratio of Pd/C to tocopherols 7.1 g/100 g, and reaction time 5.0 h. A product with α-tocopherol content of 80% was obtained by using a raw material with a total tocopherols content of 80.54%. The conversion of non-α-tocopherols is almost 100%, and the mole yield of a-tocopherol is more than 90%.

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《浙江大学学报（英文版）（A辑：应用物理和工程）》 |2004年第12期||共页
作者
杨亦文; 闻光东; 吴彩娟; 任其龙; 吴平东;
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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;

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原文格式 PDF
正文语种 chi
中图分类维生素Ｅ（生育酚）;
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Preparation of natural α-tocopherol from non-α-tocopherols

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