|
NISCAIR ONLINE PERIODICALS REPOSITORY (NOPR) >
NISCAIR PUBLICATIONS >
Research Journals >
Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.12 [2005] >
IJCT Vol.12(3) [May 2005] >
| Title: | Synthesis of p-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
p-tolyl stearate
esterification
reusability |
| Issue Date: | May-2005 |
| Publisher: | CSIR |
| IPC Code: | C01B3/16:33/38 |
| Abstract: | Synthesis of p-tolyl
stearate, catalyzed by acid activated Indian bentonite (AAIB) is reported. The
esterification of stearic acid (SA) and p-cresol
(p-C) gave p-tolyl stearate in high yield using acid activated Indian
bentonite as the catalyst. White montmorillonite exchanged with Al3+
and treated with HCl gave 49 and 51% of the ester respectively after 12 h. Use
of p-toluenesulphonic acid as
catalyst gave 82% yield of the ester after 12 h in toluene. When the reaction
was conducted in toluene and o-xylene
with Indian bentonite treated with H2SO4 the yields were
89 and 97% (molar ratio, SA:p-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 p-tolyl stearate and reusability of the
clay catalyst are investigated. |
| Page(s): | 316-321 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.12(3) [May 2005]
|
|
