Roles of interaction between components in CZZA/HZSM-5 catalyst for dimethyl ether synthesis via CO2 hydrogenation
- Missouri University of Science and Technology, Rolla, MO (United States); OSTI
- Missouri University of Science and Technology, Rolla, MO (United States)
- Gas Technology Institute, Des Plaines, IL (United States)
- Rensselaer Polytechnic Institute, Troy, NY (United States)
The roles of interaction between two catalyst components in CuO–ZnO–ZrO2–Al2O3 (CZZA)/HZSM-5 bifunctional catalyst for dimethyl ether (DME) synthesis via carbon dioxide hydrogenation were investigated. It was found that CZZA catalyst showed excellent stability during methanol (MeOH) synthesis for 100 h, while there was a severe loss of catalytic activity in the bifunctional catalyst for DME synthesis. So, the effects of different degrees of intimacy of two catalyst components were studied for DME synthesis, including mixed and separated modes. For the mixed mode, the particle size of catalysts and the amount of reaction intermediates were proven to influence the catalyst deactivation. For the separated mode, the catalysts showed rapid deactivation within a short time. Various characterizations indicated that the remarkable deactivation of separated mode was mainly caused by the decrease of copper active centers (e.g., sintering and oxidation) and blockage of acid sites via increased coke deposition on HZSM-5.
- Research Organization:
- Gas Technology Institute, Des Plaines, IL (United States); Missouri University of Science and Technology, Rolla, MO (United States)
- Sponsoring Organization:
- USDOE; USDOE Advanced Research Projects Agency - Energy (ARPA-E)
- Grant/Contract Number:
- AR0000806
- OSTI ID:
- 1976254
- Alternate ID(s):
- OSTI ID: 1804928
- Journal Information:
- AIChE Journal, Journal Name: AIChE Journal Journal Issue: 11 Vol. 67; ISSN 0001-1541
- Publisher:
- American Institute of Chemical EngineersCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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