Synthesis of poly (oxymethylene) dimethy ethers catalyzed by acidic functionalized ionic liquids

被引：0

作者：

Li, Wei-Min ^{[1
]}

Zhao, Qiang ^{[1
]}

Zuo, Tong-Mei ^{[1
]}

Wei, Guo-Hui ^{[1
]}

Lu, Zhao-Yang ^{[1
]}

Pu, Guo-Jia ^{[1
]}

机构：

[1] School of Petro Chemical Engineering, Changzhou University, Changzhou 213164, China

来源：

Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology | 2014年 / 42卷 / 04期

关键词：

Acidic functionalized ionic liquids - Molar ratio - Optimum reaction conditions - Poly (oxymethylene) dimethy ether - Raw materials ratios - Reaction behavior - Synthesised - Trioxymethylene - ]+ catalyst;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Poly (oxymethylene) dimethyl ethers (PODEn, n > 1) were synthesized by the condensation of trioxymethylene (TR) and methanol (MeOH) over the functionalized ionic liquids like [Hnmp] HSO4, [Hnmp] H2PO4, [Hnmp] PTSA and [PyN (CH2)3SO3H] HSO4; the effects of the catalyst amount, raw materials ratio, temperature, pressure and time on the reaction behaviors were investigated. The results showed that the catalytic activity of ionic liquid is related to its acidity. [PyN (CH2)3SO3H] HSO4 exhibits the highest catalytic activity; under the optimum reaction conditions, i. e. [PyN (CH2)3SO3H] HSO4 amount of 2.0%, molar ratio of MeOH to TR of 2.0, 110°C, 2.0 MPa and reaction time of 6 h, the conversion of TR and selectivity to PODE3~8 reach 97.69% and 32.54%, respectively. Moreover, the ionic liquid [PyN (CH2)3SO3H] HSO4 can be spontaneously separated from product phase after the reaction.

引用

页码：501 / 506