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.
| Original language | English |
|---|---|
| Pages (from-to) | 148-159 |
| Number of pages | 12 |
| Journal | Journal of Natural Gas Chemistry |
| Volume | 13 |
| Issue number | 3 |
| State | Published - Sep 2004 |
| Externally published | Yes |
Keywords
- Catalyst acidity
- Catalyst activity
- Catalyst stability
- Dehydroaromatization
- H ion
- Improved performance
- Li ion
- Methane
- Oxygen presence
- Partial ion exchange
- W-supported ZSM-5
ASJC Scopus subject areas
- General Chemical Engineering
- Energy Engineering and Power Technology
- Organic Chemistry
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