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%。
The epoxidation reaction of a-pinene was discussed using preparation of peroxyacetyl acid from 30 % H2O2. Nano-H3PW12O40/SiO2 was self-made 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-H3PW12O40/SiO2 was 4% （of the mass ratio of a-pinene）, the selectivity of 2, 3-epoxypinene was 74.84% and the conversion of a-pinene can reach 86.53 % at 16-20 ℃ for 2 h in CHCl3.
出处
《化学工业与工程》
CAS
2009年第3期203-206,共4页
Chemical Industry and Engineering
基金
国家自然科学基金资助项目(30700632)
云南省自然科学基金资助项目(2006C0034Q)
关键词
Α-蒎烯
环氧化
过氧乙酸
负载型杂多酸
α-pinene
epoxidation
peroxyacetic acid
supported heteropoly acid
