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Indian Journal of Chemical Technology (IJCT) >
IJCT Vol.13 [2006] >
IJCT Vol.13(4) [July 2006] >
| Title: | Methylation of toluene over MnAPO-11 and ZAPO-11 |
| Authors: | Raj, K Joseph Antony
Dayalan, A
Vijayaraghavan, V R |
| Keywords: | Methylation
AlPO-11
Xylene
Toluene
Molecular sieves |
| Issue Date: | Jul-2006 |
| Publisher: | CSIR |
| IPC Code: | C12P5/00, C02F11/04 |
| Abstract: | Methylation of toluene with methanol in the vapour phase has been studied over MnAPO-11 and ZAPO-11. The reactions were carried out in a fixed bed reactor in the temperature range of 250-400ºC. p-Xylene is produced in greater concentrations than the other products. The selectivity for p-xylene is a function of acidity, specific surface area of the catalyst, reaction temperature and toluene to methanol ratio. ZAPO-11 was found to be more active than MnAPO-11. Maximum conversion (25.8%) was observed at 400ºC over ZAPO-11. The selectivity to p-xylene was found to increase with time on stream possibly due to partial reduction in the pore size of the catalyst by coke deposition |
| Page(s): | 329-333 |
| ISSN: | 0975-0991 (Online); 0971-457X (Print) |
| Source: | IJCT Vol.13(4) [July 2006]
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