Immobilization of <em>N</em>-(3-Sulfopropyl) pyridinium methanesulfonate ionic liquid and its catalytic performance in the synthesis of polyoxymethylene dimethyl ethers

ZHANG Chao-feng; ZHANG Hai-xin; CHEN Shu-wei; LI Rui-feng

Volume 42 Issue 05

May 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(05): 609-615

ZHANG Chao-feng, ZHANG Hai-xin, CHEN Shu-wei, LI Rui-feng. Immobilization of N-(3-Sulfopropyl) pyridinium methanesulfonate ionic liquid and its catalytic performance in the synthesis of polyoxymethylene dimethyl ethers[J]. Journal of Fuel Chemistry and Technology, 2014, 42(05): 609-615.

Citation:

ZHANG Chao-feng, ZHANG Hai-xin, CHEN Shu-wei, LI Rui-feng. Immobilization of N-(3-Sulfopropyl) pyridinium methanesulfonate ionic liquid and its catalytic performance in the synthesis of polyoxymethylene dimethyl ethers[J]. Journal of Fuel Chemistry and Technology, 2014, 42(05): 609-615.

Citation:

ZHANG Chao-feng, ZHANG Hai-xin, CHEN Shu-wei, LI Rui-feng. Immobilization of N-(3-Sulfopropyl) pyridinium methanesulfonate ionic liquid and its catalytic performance in the synthesis of polyoxymethylene dimethyl ethers[J]. Journal of Fuel Chemistry and Technology, 2014, 42(05): 609-615.

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Immobilization of N-(3-Sulfopropyl) pyridinium methanesulfonate ionic liquid and its catalytic performance in the synthesis of polyoxymethylene dimethyl ethers

College of Chemistry and Chemical Engineering, Taiyuan University of Technology, Taiyuan 030024, China

Received Date: 2013-09-25
Rev Recd Date: 2014-01-23
Publish Date: 2014-05-30

Abstract

Abstract

N-(3-Sulfopropyl) pyridinium methanesulfonate ionic liquid was immobilized on HZSM-5 molecular sieves by chemical method and used as the catalyst in the synthesis of polyoxymethylene dimethyl ethers (PODE_n). X-ray diffraction, infrared spectroscopy and N₂ sorption results showed that the ionic liquid is well immobilized on the molecular sieves. The optimized reaction conditions for the synthesis of PODE_n distributions are obtained, i.e. m(ionic liquid)/m(HZSM-5) = 0.25, n(CH₃OH)/n((CH₂O)₃) = 1.5, 2.2% catalyst, 110 ℃ and 3 h. Under these conditions, the yield of PODE_3~8, as the ideal additives for diesel fuel, reaches 67.35%, which is much higher than those with single ionic liquid or molecular sieve as the catalyst. The immobilized ionic liquid can be easily recycled and reused; the yield of PODE_3~8 remains up to 45.62% after reused for three times.
- ionic liquids,
- polyoxymethylene dimethyl ethers,
- HZSM-5,
- methanol,
- trioxane,
- coupling agent

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References(23)

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