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Indexed by:期刊论文

Date of Publication:2015-04-01

Journal:REACTION KINETICS MECHANISMS AND CATALYSIS

Included Journals:SCIE、EI、Scopus

Volume:114

Issue:2

Page Number:519-527

ISSN No.:1878-5190

Key Words:Xylene; Methylation; Methanol; Nano-sized HZSM-5; 1,2,4-TMB

Abstract:High selectivity (> 98 %) of 1,2,4-trimethylbenzene (1,2,4-TMB) was achieved on nano-sized HZSM-5 by the methylation of mixed xylene with methanol. When a single xylene isomer was used as the raw material, the yield of 1,2,4-TMB followed the order of p-xylene > m-xylene > o-xylene. The results showed that high 1,2,4-TMB selectivity was mainly due to suitable pore mouths. The synthesis of 1,2,4-TMB by methylation of p-xylene with methanol was also demonstrated to be the most important route among all three xylene isomers according to the final analysis.