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  7. Volume 31
  8. Issue 04
Please use this identifier to cite or link to this item: http://localhost:80/xmlui/handle/123456789/19644
Title: FTIR Study of the Methylation of Phenol with Dimethyl Carbonate over KBr/Si02
Authors: BlNG CHEN
QINGNIAN DONG
NING ZHAO
WEI WEI
YUHAN SUN
Issue Date: 20-Aug-2009
Publisher: HEJ Research Institute of Chemistry, University of Karachi, Karachi.
Citation: Chen, B., Dong, Q., Zhao, N., & Sun, Y. (2009). Ftir study of the methylation of phenol with dimethyl carbonate over kbr/sio/sub 2. Journal of the Chemical Society of Pakistan, 31(4), 552-558.
Abstract: The O-Methylation of phenol with dimethyl carbonate (DMC) over KBr/SiO2 catalyst was carried out and the reaction mechanism was investigated by in-situ FTIR. It was found that phenol was deprotonated to generate phenolate at 100 ºC but DMC was found no activation even at elevated temperature except a little decompose at 200 ºC. As a result anisole was formed at 150 ºC. Methylation mechanism was proposed based on those, in which phenolate was generated firstly and then acted as an active phase to attack methyl carbon of DMC to yield anisole. The activation of DMC seemed to be not essential.
URI: http://142.54.178.187:9060/xmlui/handle/123456789/19644
ISSN: 0253-5106
Appears in Collections:Issue 04

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