11-钨钛杂多酸盐催化合成乙酸正丁酯

摘要合成了4种具有Keggin结构的11-钨钛多元杂多酸盐K6[MTiW11(H2O)O39](M=Cu,Zn,Cd,Ni),并以所合成的杂多酸盐催化合成乙酸正丁酯。探讨了醇、酸摩尔比,催化剂的用量,反应时间和反应温度对酯化率的影响。结果表明,反应适宜条件为:醇、酸摩尔比为1.0,催化剂用量为原料质量的1.0%,反应温度为120℃,反应时间为5.0 h。乙酸正丁酯的酯化率为80%以上。

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	单秋杰

关键词：钨钛杂多酸盐乙酸正丁酯

Abstract： Four kinds of 11-tungstotitanic heteropoly acid complexes with Keggin structure such as(K_6[MTiW_(11)(H_2O)O_(39)])(M=Cu,Zn,Cd,Ni) were synthesized.n-Butyl acetate was prepared by tungstotitanic heteropoly complexes.The results indicate that the best reaction conditions are: molar ratio of acetic acid to n-butanol is 1∶1,the dosage of catalyst is 1% of the materials gross,the reaction temperature is(120 ℃,) and the reaction time is 5 h.The ester yield of n-butyl acetate is more than 80%.

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Received 2009-09-15; published 2009-09-15

引用本文:

单秋杰;.11-钨钛杂多酸盐催化合成乙酸正丁酯[J]. 化学工业与工程, 2009,26(5): 391-394

SHAN Qiu-jie.Synthesis of n-Butyl Acetate by 11-Tungstotitanic Heteropoly Acids Catalyst[J]. Chemcial Industry and Engineering, 2009,26(5): 391-394