Catalyst design to direct high-octane gasoline fuel properties for improved engine efficiency

Nash, Connor P.; Dupuis, Daniel P.; Kumar, Anurag; Farberow, Carrie A.; To, Anh T.; Yang, Ce; Wegener, Evan C.; Miller, Jeffrey T.; Unocic, Kinga A.; Christensen, Earl; Hensley, Jesse E.; Schaidle, Joshua A.; Habas, Susan E.; Ruddy, Daniel A.

doi:10.1016/j.apcatb.2021.120801

Catalyst design to direct high-octane gasoline fuel properties for improved engine efficiency

Journal Article · Sat Oct 09 00:00:00 EDT 2021 · Applied Catalysis. B, Environmental

DOI:https://doi.org/10.1016/j.apcatb.2021.120801· OSTI ID:1827631

Nash, Connor P. ^[1]; ^[1]; Kumar, Anurag ^[1]; Farberow, Carrie A. ^[1]; To, Anh T. ^[1]; Yang, Ce ^[2]; Wegener, Evan C. ^[2]; Miller, Jeffrey T. ^[3]; Unocic, Kinga A. ^[4]; ^[1]; Hensley, Jesse E. ^[1]; ^[1]; ^[1]; ^[1]

National Renewable Energy Lab. (NREL), Golden, CO (United States)
Argonne National Lab. (ANL), Argonne, IL (United States)
Purdue Univ., West Lafayette, IN (United States)
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

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 in this paper, 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).

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States); Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: National Science Foundation (NSF); USDOE Office of Energy Efficiency and Renewable Energy (EERE); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Bioenergy Technologies Office

Grant/Contract Number:: AC02-06CH11357; AC05-00OR22725; AC36-08GO28308

OSTI ID:: 1827631

Alternate ID(s):: OSTI ID: 1890342
OSTI ID: 1908135

Report Number(s):: NREL/JA--5100-80304; MainId:42507; UUID:441dbe53-d54b-4997-9375-8c41cfbb323d; MainAdminID:63179

Journal Information:: Applied Catalysis. B, Environmental, Journal Name: Applied Catalysis. B, Environmental Vol. 301; ISSN 0926-3373

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Catalyst design to direct high-octane gasoline fuel properties for improved engine efficiency

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