Chinese Journal of Catalysis, ( ISI ), Volume (32), No (5), Year (2011-4) , Pages (1-6)

Title : ( Catalytic Performance of Nano-SiO2-Supported Preyssler Heteropolyacid in Esterification of Salicylic Acid with Aliphatic and Benzylic Alcohols )

Authors: Fatemeh F. BAMOHARRAM , Majid M. HERAVI , Javad EBRAHIMI , Ali Ahmadpour , Seyed Mojtaba Zebarjad ,

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An efficient and environmentally benign procedure for the catalytic esterification of salicylic acid with aliphatic alcohols, CnH2n+1OH (n = 1–5) and benzylic alcohols, RC6H4CH2OH (R = H, NO2, OCH3, Br, Cl, Me) was developed using nano-SiO2-supported Preyssler both under thermal conditions and microwave irradiation. Silica nanostructures were obtained through a sol-gel method and were characterized by transmission electron microscopy and powder X-ray diffraction. The effects of various parameters such as solvent type, molar ratio of substrates, Preyssler loading on silica, catalyst amount, temperature, and reaction time were studied and the optimum conditions were obtained. It has been found that the catalyst with 30 wt% loading is highly active and shows high yields in esterification reactions. The use of nano-SiO2-supported Preyssler coupled with microwave irradiation allows a solvent-free, rapid (3 min), and high-yielding reaction. This catalyst can be easily recovered and reused for many times without a significant loss in its activity.

Keywords

Preyssler; heteropolyacid; silica; esterification; salicylic
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@article{paperid:1021535,
author = {Fatemeh F. BAMOHARRAM and Majid M. HERAVI and Javad EBRAHIMI and Ahmadpour, Ali and Zebarjad, Seyed Mojtaba},
title = {Catalytic Performance of Nano-SiO2-Supported Preyssler Heteropolyacid in Esterification of Salicylic Acid with Aliphatic and Benzylic Alcohols},
journal = {Chinese Journal of Catalysis},
year = {2011},
volume = {32},
number = {5},
month = {April},
issn = {0253-9837},
pages = {1--6},
numpages = {5},
keywords = {Preyssler; heteropolyacid; silica; esterification; salicylic acid},
}

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%0 Journal Article
%T Catalytic Performance of Nano-SiO2-Supported Preyssler Heteropolyacid in Esterification of Salicylic Acid with Aliphatic and Benzylic Alcohols
%A Fatemeh F. BAMOHARRAM
%A Majid M. HERAVI
%A Javad EBRAHIMI
%A Ahmadpour, Ali
%A Zebarjad, Seyed Mojtaba
%J Chinese Journal of Catalysis
%@ 0253-9837
%D 2011

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