基于杂多类离子液体催化体系的甘油氢解反应研究

袁冰; 刘天; 于世涛

基于杂多类离子液体催化体系的甘油氢解反应研究

1.
青岛科技大学生态化工国家重点实验室培育基地, 化学与分子工程学院, 山东青岛 266042;
2.
青岛科技大学化工学院, 山东青岛 266042

基金项目: 国家自然科学基金(21106074); 青岛市应用基础研究(12-1-4-3-(22)-jch)。

详细信息

通讯作者:
于世涛(1962- ),男,博士,教授,E-mail:yuanbing@qust.edu.cn;yushitaoqust@126.com。

中图分类号: TK6
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- 被引次数: 0
出版历程
- 收稿日期: 2014-04-11
- 修回日期: 2014-07-11
- 刊出日期: 2014-10-30

Hydrogenolysis of glycerol over a catalytic system based on heteropoly ionic liquid

1.
State Key Laboratory Base of Eco-chemical Engineering, College of Chemistry and Molecular Engineering, Qingdao University of Science and Technology, Qingdao 266042, China;
2.
College of Chemical Engineering, Qingdao University of Science and Technolygy, Qingdao 266042, China

摘要

摘要: 将一系列不同结构的离子液体与雷尼镍复合,作为甘油氢解制备丙二醇反应的催化剂。考察了离子液体结构对催化性能的影响,优选出具有适宜酸强度的固态磷钨酸质子化咪唑([HMIM]₃PW₁₂O₄₀),采用FT-IR、¹H-NMR及TG对其进行了表征。[HMIM]₃PW₁₂O₄₀/雷尼镍复合催化剂在用量[HMIM]₃PW₁₂O₄₀ 0.2 mmol、雷尼镍0.3 g的条件下,催化20 g 40%甘油水溶液在6 MPa氢压(氢醇比为 2.37:1)下,230 ℃反应11 h,可得到甘油转化率83.3%,氢解产物1,2-丙二醇选择性57.3%的结果,催化剂具有良好的稳定性。
- 杂多类离子液体 /
- 雷尼镍 /
- 甘油 /
- 磷钨酸质子化咪唑 /
- 1,2-丙二醇
Abstract: A series of ionic liquids coupled with Raney Ni were used as dual functional catalysts in the hydrogenolysis reaction of glycerin to prepare propylene glycol. Effects of the ionic liquid structure on catalytic performance was studied. As a result, a solid heteropoly ionic liquid [HMIM]₃PW₁₂O₄₀ with suitable acid strength was selected and characterized by FT-IR, ¹H-NMR and TG. The composite catalyst [HMIM]₃PW₁₂O₄₀/Raney Ni could give 83.3% glycerol conversion and 57.3% selectivity for 1,2-propanediol under the optimized conditions: 20 g 40% glycerol solution, 0.2 mmol [HMIM]₃PW₁₂O₄₀ and 0.3 g Raney Ni dosage, 6 MPa hydrogen pressure (hydrogen to alcohol 2.37:1), 230 ℃, 11 h. What's more, the low cost composite catalyst could be prepared simply and recycled easily with good stability.
- heteropoly ionic liquid /
- Raney Ni /
- glycerol /
- [HMIM]₃PW₁₂O₄₀ /
- 1,2-propanediol

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