Applied Catalysis2022，Vol.30111.DOI:10.1016/j.apcatb.2021.120801

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.
Applied Catalysis2022，Vol.30111.DOI:10.1016/j.apcatb.2021.120801
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  • NSTL
  • Elsevier

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

Nash, Connor P. 1Dupuis, Daniel P. 1Kumar, Anurag 1Farberow, Carrie A. 1To, Anh T. 1Yang, Ce 2Wegener, Evan C. 2Miller, Jeffrey T. 3Unocic, Kinga A. 4Christensen, Earl 1Hensley, Jesse E. 1Schaidle, Joshua A. 1Habas, Susan E. 1Ruddy, Daniel A.1
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作者信息

  • 1. Natl Renewable Energy Lab, Catalyt Carbon Transformat & Scale Up Ctr, Golden, CO 80401 USA
  • 2. Argonne Natl Lab, Chem Sci & Engn Div, Lemont, IL 60439 USA
  • 3. Purdue Univ, Sch Chem Engn, W Lafayette, IN 47907 USA
  • 4. Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, POB 2009, Oak Ridge, TN 37830 USA
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Abstract

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).

Key words

High octane gasoline/Engine efficiency/Dehydrogenation/Paraffin/olefin ratio/Cu/BEA zeolite

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出版年

2022
Applied Catalysis

Applied Catalysis

ISSN：0926-3373
被引量4
参考文献量40
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