Citation: ZHANG Chao-feng, ZHANG Jing, ZHANG Hao-yu, HUANG Shuang-ping, LI Rui-feng. Synthesis of polyoxymethylene dimethyl ethers from dimethoxymethane and trioxane catalyzed by ionic liquids encapsulated in caged mesoporous KIT-5 material[J]. Journal of Fuel Chemistry and Technology, ;2020, 48(4): 505-512. shu

Synthesis of polyoxymethylene dimethyl ethers from dimethoxymethane and trioxane catalyzed by ionic liquids encapsulated in caged mesoporous KIT-5 material

1.
College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, China
2.
College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Corresponding author: ZHANG Chao-feng, zhangchaofeng@tyut.edu.cn
Received Date: 20 December 2019
Revised Date: 2 March 2020

Fund Project: the Natural Science Foundation of Shanxi Province 201801D121062The project was supported by the Natural Science Foundation of Shanxi Province (201801D121062), the Shanxi Scholarship Council of China (2017-037) and the Foundation of Taiyuan University of Technology (2016MS03)the Foundation of Taiyuan University of Technology 2016MS03the Shanxi Scholarship Council of China 2017-037

Figures(9)

Four kinds of supported ionic liquid catalysts were prepared by encapsulation of ionic liquids within the nanocage of KIT-5 and were used in the synthesis of polyoxymethylene dimethyl ether (PODE_n) from dimethoxymethane and trioxane; the effects of conditional parameters on the conversion of trioxane and the selectivity to targeted PODE_3-5 were systematically investigated. The results show that the optimum reaction parameters for the synthesis of polyoxymethylene dimethyl ether were: reaction time of 2 h, 100 ℃, dimethoxymethane to trioxane molar ratio of 1.5, and catalyst content of 3%. Under the optimum conditions, the encapsulated catalysts are efficient in the synthesis of polyoxymethylene dimethyl ether, with a similar catalytic activity to the homogeneous counterparts. Moreover, the encapsulated catalysts can be reused several times without remarkable loss of activity and product selectivity, which makes it a promising catalyst for practical applications.
- polyoxymethylene dimethyl ethers,
- ionic liquids,
- KIT-5,
- catalysts
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沈阳化工大学材料科学与工程学院沈阳 110142