四丁基溴化铵催化合成环氧大豆油.pdf

110
CHINA OILS AND FATS
2018Vol.43No.3
油脂化工
四丁基溴化铵催化合成环氧大豆油
蒲吉运,杨小俊,白航,李富
(武汉工程大学化工与制药学院,绿色化工过程省部共建教育部重点实验室,武汉430205)
摘要∷在无溶剂无羧酸条件下,以四丁基溴化铵为相转移催化剂,用65%的叔丁基过氧化氢
(TBHP)为氧源直接合成环氧大豆油。考察了反应温度、反应时间、催化剂用量及 BHP与碳碳双
键摩尔比对环氧化反应的影响,通过红外光谱对催化环氧化的机理进行了初步探究。结果表明∷在
反应温度65℃、反应时间3h、催化剂用量3.0g(10.0g大豆油)、TBHP与碳碳双键摩尔比1.5:1
条件下,催化环氧化效果最好,环氧值、转化率和选择性分别达到3.5%、53.9%和77.5%。此方法
操作简单,催化剂价格低,简化了工艺流程,降低了工艺成本,同时克服了传统方法使用羧酸和溶剂
等造成的弊端
关键词∷无溶剂?四丁基溴化铵;叔丁基过氧化氢环氧大豆油
中图分类号:I645:1T414
文献标识码A
文章编号:1003-7969(2018)03-0110-04
ynthesis of epoxy soybean oil catalyzed by tetrabutylammonium bromide
PU Jiyun, YANG Xiaojun, BAI Hang, II Fu
( Key Laboratory for Green Chemical Process of Ministry of Education, School of Chemical
Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan 430205, China)
AbstractIn the absence of solvent and carboxylic acid, epoxy soybean oil was synthesized with tet rabu-
Iy lammonium bromide as phase transfer catalyst and TBHP (65) as oxygen source. The effects of reac
tion time, reaction temperature, dosage of catalyst and molar ratio of TBHP to carbon-carbon double
bond on the epoxy reaction were investigated, and the reaction mechanism was analyzed by FTIR. The
results showed that the optimal reaction conditions were obtained as follows reaction temperature 65 C
reaction time 3 h, dosage of catalyst 3.0 g( soybean oil mass 10.0 g), molar ratio of T]HP to carbon
carbon double bond 1. 5: 1. Under the optimal conditions, the catalytic epoxy result was the best, and the
epoxy value of the product, conversion and selectivity could reach 3.5, 53.9% and 77. 5%o, respec
Lively. The method had the items of simply process, easy operation and low cost, and it overcame the
drawbacks of the Traditional methods of using carboxylic acids and solvents
Key words solvent free, tetrabutylammonium bromide, tert-butyl hydroperoxide, epoxy soybean oil
环氧大豆油是一种环境友好、性能优良的増塑用下,在没有溶剂参与的情况下,环氧化剂与大豆油
剂,在很多领域都有着广泛的应用前景,也是一类重中的碳碳双键反应得到环氧大豆油产品-,其中
要的无毒有机合成中间体。目前,生产环氧大催化剂是关键所在。
豆油的方法主要为无溶剂法,该方法是在催化剂作
邓芳等以乙酸乙酯为溶剂、甲基三辛基硫酸
氢铵为相转移催化剂,用30%(质量分数)过氧化氢
收稿日期:2017-05-10:修回日期:2017-12-2.5
溶液合成环氧大豆油,环氧值为6.27%,此方法虽
基金项目:湖北省自然科学基金重点类项目(2016CFA079);有较高环氧值,但催化剂价格贵,也用了溶剂,使分
广东省公益研究与能力建设专项(2015A010105018)
离工艺变得困难。邬凤娟等∞以3,5-二叔丁基
作者简介:蒲吉运(1992),女,在读硕士,研究方向为化学エ水杨醛、乙二胺、Cu(OAC)?2H20、乙醇混合回流
艺(F-mail)1726584593(@q,com
制得Cu- salen配合物,Cu- salen配合物作为环氧
通信作者:杨小俊,副教授(F-mai)1726584593@q,m
化反应催化剂,以叔丁基过氧化氢(TBHP)为氧源,
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