|
| 四丁基溴化铵催化合成环氧大豆油 |
| Synthesis of epoxy soybean oil catalyzed by tetrabutylammonium bromide |
| |
| DOI： |
| 中文关键词: 无溶剂 四丁基溴化铵 叔丁基过氧化氢 环氧大豆油 |
| 英文关键词:solvent free tetrabutylammonium bromide tert-butyl hydroperoxide epoxy soybean oil |
| 基金项目: |
|
| Hits: 1260 |
| Download times: 265 |
| 中文摘要: |
| 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TBHP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3 h、催化剂用量3.0 g（10.0 g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。 |
| 英文摘要: |
| In the absence of solvent and carboxylic acid, epoxy soybean oil was synthesized with tetrabutylammonium bromide as phase transfer catalyst and TBHP (65%) as oxygen source. The effects of reaction 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?℃, reaction time 3 h, dosage of catalyst 3.0 g(soybean oil mass 10.0 g), molar ratio of TBHP 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%, respectively. 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. |
| 查看全文 View/Add Comment Download reader |
| Close |
|
|
|
