期刊
CHEMICAL ENGINEERING JOURNAL
卷 427, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.131955
关键词
Catalytic chemistry; Dimethyl carbonate; Interesterification; Propylene carbonate; Ionic liquid
资金
- National Key Research and Development Plan, China [2018YFB0604500]
- Key Task and Local Project in Science & Technology of SYUCT, China
- Project for Innovative Talents in Liaoning Province, China [LR 2016015]
This study discovered a novel organic catalyst 1-ethyl-3-methylimidazolium pyrrole ([EmIm]Py) that exhibited superior activity and practicality in carbonate synthesis, achieving remarkable efficiency even at low temperature. The catalyst outperformed most reported catalysts in various base-catalyzed reactions and showed potential operability in industrial production of dimethyl carbonate (DMC). The mechanism of propylene carbonate (PC) and methanol interesterification over [EmIm]Py catalyst was proposed through a combination of experimental and theoretical studies.
In catalytic chemistry, exploiting catalysts with superior activity and practicability is the ultimate goal. Herein, we found a brand-new organocatalyst 1-ethyl-3-methylimidazolium pyrrole ([EmIm]Py). Using in carbonate synthesis, this catalyst realized a record-breaking efficiency of 20.7 gDMC (molCat min)-1 even at 0 degrees C. Notably, this catalyst did better in varied base-catalyzed reactions than most reported catalysts. [EmIm]Py also exhibited potential operability in dimethyl carbonate (DMC) industrial production. The mechanism of propylene carbonate (PC) and methanol interesterification over [EmIm]Py catalyst was proposed by a combination of experimental and theoretical studies.
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