Brønsted-acidic ionic liquids as efficient catalysts for the synthesis of polyoxymethylene dialkyl ethers | |
Department | OSSO国家重点实验室 |
Song HY(宋河远)1,2; Kang MR(康美荣)1; Jin FX(金福祥)1; Wang GQ(王国芹)1,2; Li Z(李臻)1; Chen J(陈静)1; Chen J(陈静) | |
2017 | |
Source Publication | Chinese Journal of Catalysis |
ISSN | 0253-9837 |
Volume | 38Issue:5Pages:853-861 |
Abstract | Acetalation of formaldehyde (HCHO) with dialkyl formal or aliphatic alcohol to prepare polyoxymethylene dialkyl ethers (RO(CH2O)nR, n ≥ 1) catalyzed by Brønsted-acidic ionic liquids has been developed. The correlation between the structure and acidity activity of various ionic liquids was studied. Among the ionic liquids investigated, 1-(4-sulfonic acid)butyl-3-methylimidazolium hydrogen sulfate ([MIMBs]HSO4) exhibited the best catalytic performance in the reaction of diethoxymethane (DEM1) with trioxane. The influences of ionic liquid loading, molar ratio of DEM1 to HCHO, reaction temperature, pressure, time, and reactant source on the catalytic reaction were explored using [MIMBs]HSO4 as the catalyst. Under the optimal conditions of n([MIMBs]HSO4):n(DEM1):n(HCHO) = 1:80:80, 140 °C, and 4 h, the conversion of HCHO and selectivity for DEM2–8 were 92.6% and 95.1%, respectively. The [MIMBs]HSO4 catalyst could be easily separated and reused. A feasible mechanism for the catalytic performance of [MIMBs]HSO4 was proposed. |
Keyword | Acetalation Reaction Polyoxymethylene Dialkyl Ether Diethoxymethane Formaldehyde Brønsted-acidic Ionic Liquid |
Subject Area | 物理化学与绿色催化 |
DOI | 10.1016/S1872-2067(17)62816-X |
Indexed By | SCI |
If | 2.813 |
Language | 英语 |
Funding Project | 分子催化与技术研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/21899 |
Collection | 羰基合成与选择氧化国家重点实验室(OSSO) |
Corresponding Author | Chen J(陈静) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Gansu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Song HY,Kang MR,Jin FX,et al. Brønsted-acidic ionic liquids as efficient catalysts for the synthesis of polyoxymethylene dialkyl ethers[J]. Chinese Journal of Catalysis,2017,38(5):853-861. |
APA | Song HY.,Kang MR.,Jin FX.,Wang GQ.,Li Z.,...&Chen J.(2017).Brønsted-acidic ionic liquids as efficient catalysts for the synthesis of polyoxymethylene dialkyl ethers.Chinese Journal of Catalysis,38(5),853-861. |
MLA | Song HY,et al."Brønsted-acidic ionic liquids as efficient catalysts for the synthesis of polyoxymethylene dialkyl ethers".Chinese Journal of Catalysis 38.5(2017):853-861. |
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