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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 CodeC12P5/00, 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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