负载型纳米复合杂多酸催化α-蒎烯的环氧化反应研究

摘要以自制的负载型纳米复合杂多酸H3PW12O40/SiO2催化剂和30%(质量分数)H2O2制备的过氧乙酸为氧化剂,研究α-蒎烯环氧化反应。试验结果表明,过氧乙酸与α-蒎烯的摩尔比为3.0,相转移催化剂四丁基溴化铵浓度为0.06 mol/L,负载型纳米复合杂多酸用量为4%(占α-蒎烯质量百分数),在三氯甲烷溶剂中反应2.0 h,反应温度在16~20℃,α-蒎烯转化率达86.53%,2,3-环氧蒎烷选择性为74.84%。

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	吴春华
	秦永剑
	张加研
	冷时雁

关键词： α-蒎烯环氧化过氧乙酸负载型杂多酸

Abstract： The epoxidation reaction of α-pinene was discussed using preparation of peroxyacetyl acid from 30% H_2O_2.Nano-H_3PW_(12)O_(40)/SiO_2 was selfmade and was used in the epoxidation.The optimized condition was obtained.When the molar ratio of α-pinene to peroxyacetic acid was 1∶3,the concentration of ammonium bromide was 0.06 mol/L,dosage of nano-H_3PW_(12)O_(40)/SiO_2 was 4%(of the mass ratio of α-pinene),the selectivity of 2,3-epoxypinene was 74.84% and the conversion of α-pinene can reach 86.53% at 16—20 ℃ for 2 h in CHCl_3.

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Received 2009-05-15; published 2009-05-15

引用本文:

吴春华;秦永剑;张加研;冷时雁;.负载型纳米复合杂多酸催化α-蒎烯的环氧化反应研究[J]. 化学工业与工程, 2009,26(3): 203-206

WU Chun-hua,QIN Yong-jian,ZHANG Jia-yan,LENG Shi-yan.Epoxidation of α-Pinene Catalyzed by Supported Nano-Heteropoly Acid[J]. Chemcial Industry and Engineering, 2009,26(3): 203-206