Conversion of dimethyl ether to toluene under an O2 stream over W/HZSM-5 catalysts. Issue 3 (9th January 2015)

• Record Type: Journal Article
• Authors: Wang, Bo; Wang, Hui; Liu, Guangbo; Li, Xuemin; Wu, Jinhu
• Is Part Of: Catalysis science & technology. Volume 5:Issue 3(2015:Mar.)
• Page Start: 1813
• Page End: 1820
• Publication Date: 2015-01-09
• Subjects: Catalysis -- Periodicals; 541.395
• DOI: 10.1039/c4cy01445f
• Languages: English
• ISSNs: 2044-4753

Abstract

Abstract : The direct conversion of dimethyl ether (DME) to toluene without other aromatics is realized over W/HZSM-5 catalysts with high W contents. Abstract : The direct conversion of dimethyl ether (DME) to toluene without other aromatics is realized over W/HZSM-5 catalysts with high W contents. The influence of W content on the nature of tungsten species, the distribution of acid sites, the redox properties, and the subsequent catalytic performance of W/HZSM-5 in DME conversion was investigated. The introduction of a high content of W in HZSM-5 can bring about some new redox sites and acidic sites associated with W species, although they also cover some acidic sites in HZSM-5. In this way, the introduction of W interrupts the dual cycle of the DME-to-hydrocarbon reaction on HZSM-5, and effectively the formation of higher methylbenzenes is limited.