Catalyst design to direct high-octane gasoline fuel properties for improved engine efficiency
Journal Article
·
· Applied Catalysis. B, Environmental
The paraffin-to-olefin (P/O) ratio in gasoline fuel is a critical metric affecting fuel properties and engine efficiency. In the conversion of dimethyl ether (DME) to high-octane hydrocarbons over BEA zeolite catalysts, the P/O ratio can be controlled through catalyst design. Here, we report bimetallic catalysts that balance the net hydrogenation and dehydrogenation activity during DME homologation. The Cu-Zn/BEA catalyst exhibited greater relative dehydrogenation activity attributed to higher ionic site density, resulting in a lower P/O ratio (6.6) versus the benchmark Cu/BEA (9.4). The Cu-Ni/BEA catalyst exhibited increased hydrogenation due to reduced Ni species, resulting in a higher P/O ratio (19). The product fuel properties were estimated with an efficiency merit function and compared against finished gasolines and a typical alkylate blendstock. Merit values for the hydrocarbon product from all three BEA catalysts exceeded those of the comparison fuels (0–5.3), with the product from Cu-Zn/BEA exhibiting the highest merit value (9.7).
- Research Organization:
- Argonne National Laboratory (ANL)
- Sponsoring Organization:
- National Science Foundation (NSF); National Renewable Energy Laboratory (NREL)
- DOE Contract Number:
- AC02-06CH11357;
- OSTI ID:
- 1908135
- Journal Information:
- Applied Catalysis. B, Environmental, Journal Name: Applied Catalysis. B, Environmental Vol. 301; ISSN 0926-3373
- Country of Publication:
- United States
- Language:
- English
Similar Records
Catalyst design to direct high-octane gasoline fuel properties for improved engine efficiency
Shifting the Paraffin-to-Olefin Ratio and Gasoline Fuel Properties with Bimetallic BEA Zeolite Catalysts in Dimethyl Ether Homologation
Journal Article
·
2021
· Applied Catalysis. B, Environmental
·
OSTI ID:1827631
Shifting the Paraffin-to-Olefin Ratio and Gasoline Fuel Properties with Bimetallic BEA Zeolite Catalysts in Dimethyl Ether Homologation
Conference
·
2019
·
OSTI ID:1576476