Highly efficient phase transfer catalyst supported on Janus composite particles: Synthesis, characterization, and applications

Groups of chloromethyl were randomly grafted to Janus composite particles and quaternization was carried out on the particles. The Janus material of titania–quaternary ammoniated poly(vinylbenzyl chloride–divinylbenzene) (TiO2–QApoly(VBC–DVB)) was investigated in detail. Results revealed that the an...

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Bibliographic Details
Published inJournal of materials research Vol. 29; no. 11; pp. 1231 - 1236
Main Authors Chen, Qinhui, Zheng, Longhui, Chen, Baoling, He, Junhui, Huang, Haibin, Lin, Jinhuo
Format Journal Article
LanguageEnglish
Published New York, USA Cambridge University Press 14.06.2014
Springer International Publishing
Springer Nature B.V
Subjects
Analysis
Applied and Technical Physics
Atoms & subatomic particles
Biomaterials
Catalysis
Catalysts
Chemical engineering
Chloride
Chlorides
Composite materials
Dissolution
Esterification
Ethanol
Ethyl alcohol
Fourier transforms
Inorganic Chemistry
Janus
Materials Engineering
Materials research
Materials Science
Morphology
Nanotechnology
Particulate composites
Phase transfer catalysts
Physicists
Quarks
Sodium acetate
Studies
Surfactants
Titanium dioxide
Vacuum distillation
polymer
composite
catalytic
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Summary:Groups of chloromethyl were randomly grafted to Janus composite particles and quaternization was carried out on the particles. The Janus material of titania–quaternary ammoniated poly(vinylbenzyl chloride–divinylbenzene) (TiO2–QApoly(VBC–DVB)) was investigated in detail. Results revealed that the anisotropic Janus material containing quaternary ammonium groups was synthesized successfully. The Janus material could be used as the phase transfer catalyst. The catalytic activity of the Janus material was confirmed by the esterification reaction of benzyl chloride and sodium acetate. In the presence of 0.5 wt.% (relative to benzyl chloride) of TiO2–QApoly(VBC–DVB), the esterification yield of benzyl acetate reached 87.6% when the molar ratio of sodium acetate anhydrous to benzyl chloride was 1.2. The catalyst exhibited a high activity and had no obvious loss of activity when recycled three times. Moreover, the Janus material was easily recovered by centrifugation and washed with ethanol and water.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0884-2914
2044-5326
DOI:10.1557/jmr.2014.117