THE REACTION NETWORK IN THE CONVERSION OF 1,2,4-TRIMETHYLBENZENE OVERHZSM-5

Citation
Hp. Roger et al., THE REACTION NETWORK IN THE CONVERSION OF 1,2,4-TRIMETHYLBENZENE OVERHZSM-5, Journal of catalysis, 176(1), 1998, pp. 68-75
Citations number
21
Categorie Soggetti
Chemistry Physical
Journal title
ISSN journal
00219517
Volume
176
Issue
1
Year of publication
1998
Pages
68 - 75
Database
ISI
SICI code
0021-9517(1998)176:1<68:TRNITC>2.0.ZU;2-E
Abstract
A reaction network for the conversion of 1,2,4-trimethylbenzene [1,2,4 -TMB] over HZSM-5 is proposed, based on product concentrations versus space time studies at 723 K. At conversion levels below 10% the rates of formation of 1,2,3- and 1,3,5-TMB reflect the catalyst's activity f or the isomerization of 1,2,4-TMB; the isomer distributions in the xyl ene and tetramethylbenzene fraction are not thermodynamically controll ed and thus represent valuable information on the selectivity of the c atalyst. As expected, product distributions were affected by the level of conversion, and thus selectivities have to be compared at equal co nversions. (C) 1998 Academic Press.