Effects of hydrothermal treatment conditions on the catalytic activity of HZSM-5 zeolites in the methylation of 4-methylbiphenyl with methanol

Xinwen Guo, Jian Ping Shen, Lu Sun, Chunshan Song, Xiangsheng Wang

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

The objective of this work is to study the effects of hydrothermal treatment conditions on the methylation of 4-methylbiphenyl (4-MBP) with methanol under fixed-bed down-flow conditions. The results show that hydrothermal treatment temperature has a marked effect on the activity and selectivity in the methylation of 4-MBP with methanol. 4-MBP conversion decreases and the selectivity to 4,4′-dimethylbiphenyl (4,4′-DMBP) increases with an increase in the hydrothermal treatment temperature. The optimal temperature range is between 400 and 550 °C. After hydrothermal treatment, the catalytic selectivity to 4,4′-DMBP is up to 70%, while the 4-MBP conversion is about 12%. The high selectivity over hydrothermally treated ZSM-5 largely results from the suppression of 4,4′-DMBP secondary reactions such as isomerization and dealkylation, as demonstrated by the reaction of 4,4′-DMBP as reactant over hydrothermally treated ZSM-5 and the parent zeolite.

Original languageEnglish (US)
Pages (from-to)159-166
Number of pages8
JournalCatalysis Letters
Volume87
Issue number3-4
DOIs
StatePublished - Apr 1 2003

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

Fingerprint Dive into the research topics of 'Effects of hydrothermal treatment conditions on the catalytic activity of HZSM-5 zeolites in the methylation of 4-methylbiphenyl with methanol'. Together they form a unique fingerprint.

  • Cite this