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Study on the synthesis of quaternary ammonium salts using imidazolium ionic liquid as catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
52792 46887 2007 4 PDF Available
Title
Study on the synthesis of quaternary ammonium salts using imidazolium ionic liquid as catalyst
Abstract

Various tetramethyl ammonium salts and N,N,N-trimethyl-N  -cyclohexyl ammonium salts with different anions were synthesized efficiently by a one-step reaction. The effects of the catalyst content, reaction temperature, and reaction time on the product yield were investigated. Under similar reaction conditions, the maximum yields of tetramethyl ammonium salts decrease corresponding to the anion type of the starting ammonium salts is Br−,Cl−,NO3−>F−,SO42−>C2O42−,CO32−,OAc−. For the N,N,N-trimethyl-N-cyclohexyl ammonium salts with anions such as Br−, Cl−, and NO3−, quantitative yields (>99%) can be achieved at 413 K within 8 h or at 443 K for 2 h. The yield of N,N,N-trimethyl-N-cyclohexyl ammonium acetate reaches the maximum (95.7%) at 443 K for 8 h, while the carbonate yield reaches 95.0% at 453 K for 8 h. Quantitative yield of N,N,N-trimethyl-N-cyclohexyl ammonium sulfate is obtained at 443 K for 8 h.

Keywords
Quaternary ammonium salts; Ammonium salts; Aminium salts; Dimethyl carbonate; Ionic liquid; Catalyst
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Study on the synthesis of quaternary ammonium salts using imidazolium ionic liquid as catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 8, Issue 1, January 2007, Pages 39–42
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
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