Please use this identifier to cite or link to this item: http://nopr.niscair.res.in/handle/123456789/8637
Title: Synthesis of <i style="">p</i>-tolyl stearate catalyzed by acid activated Indian bentonite
Authors: Vijayakumar, B
Reddy, C Ravindra
Iyengar, Pushpa
Nagendrappa, Gopalpur
Prakash, B S Jai
Keywords: Smectite
acid activated Indian bentonite
<i style="">p</i>-tolyl stearate
esterification
reusability
Issue Date: May-2005
Publisher: CSIR
Series/Report no.: C01B3/16:33/38
Abstract: Synthesis of <i style="">p</i>-tolyl stearate, catalyzed by acid activated Indian bentonite (AAIB) is reported. The esterification of stearic acid (SA) and <i style="">p</i>-cresol (<i style="">p</i>-C) gave <i style="">p</i>-tolyl stearate in high yield using acid activated Indian bentonite as the catalyst. White montmorillonite exchanged with Al<sup>3+</sup> and treated with HCl gave 49 and 51% of the ester respectively after 12 h. Use of <i style="">p</i>-toluenesulphonic acid as catalyst gave 82% yield of the ester after 12 h in toluene. When the reaction was conducted in toluene and <i style="">o</i>-xylene with Indian bentonite treated with H<sub>2</sub>SO<sub>4</sub> the yields were 89 and 97% (molar ratio, SA:<i style="">p</i>-C = 1:4) respectively after 12 h. Effects of molar ratio, amount of the catalyst, solvent, reaction time and catalyst activation temperature on the yield of <i style="">p</i>-tolyl stearate and reusability of the clay catalyst are investigated.
Description: 316-321
URI: http://hdl.handle.net/123456789/8637
ISSN: 0975-0991 (Online); 0971-457X (Print)
Appears in Collections:IJCT Vol.12(3) [May 2005]

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