Improved Performance Of W/HZSM-5 Catalysts For Dehydroaromatization Of Methane

Abstract:

The dehydroaromatization of CH₄ over W-supported ZSM-5 with varying degrees of Li⁺ ion-exchanged catalysts was studied with and without oxygen at 1073 K and 1 atm. The activity and stability of the catalysts for the conversion of CH₄ to aromatics over W supported HZSM-5 could be improved by replacing H⁺ proton associated with Brönsted acid with a suitable Li content on the ZSM-5 support and be further improved by adding oxygen in the feed. The 3WHLi-Z (5:1) catalyst with 74% of the original HZSM-5 strong acid sites displayed maximum activity and stability with and without oxygen addition in the feed gas.

1. Nor Aishah Saidina Amin and Kusmiyati (2004). Improved Performance Of W/HZSM-5 Catalysts For Dehydroaromatization Of Methane. Journal of Natural Gas Chemistry, 13 (3), 148-159, Science Press.