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磷钼杂多酸的合成、表征及催化活性的研究
Studies on synthesis characterization and catalytic activity of olybdophosphoric-heteropolyacid
【摘要】 介绍了磷钼杂多酸的合成、表征,并以磷钼杂多酸取代硫酸作催化剂制备乙酸乙酯来研究其催化活性,讨论了催化剂用量,反应时间,醇酸摩尔比对收率的影响,并与硫酸做催化剂进行对比,实验收率为91.48%,超过硫酸催化剂水平。
【Abstract】 It has shown the method of synthesis and the character of olybdophosphoric acid, studied the catalytic activity as catalyst in synthesis ethyl acetate instead of sulphuric acid. Discussed the quantity of catalyst, the time of reaction and effect of the alcohol and ratio of acid on rate of the reaction. Under the optimum conditions, rate of production was 91.48%, which is better than using the sulphuric acid.
【关键词】 杂多酸;
磷钼酸;
表征;
催化活性;
【Key words】 heteropolyacid; olybdophosporic acid, character, catalytic activity;
【Key words】 heteropolyacid; olybdophosporic acid, character, catalytic activity;
【基金】 国家自然科学基金项目!971007
- 【文献出处】 黑龙江大学自然科学学报 ,Journal of Natural Science of Heilongjiang University , 编辑部邮箱 ,2001年01期
- 【分类号】O643.3
- 【被引频次】21
- 【下载频次】878