Octane Modeling of Isobutanol Blending into Gasoline

Alleman, Teresa L.; Singh, Avantika; Christensen, Earl D.; Simmons, Ethan; Johnston, Glenn

doi:10.1021/acs.energyfuels.0c00911

Octane Modeling of Isobutanol Blending into Gasoline

Journal Article · Tue Jun 02 00:00:00 EDT 2020 · Energy and Fuels

DOI:https://doi.org/10.1021/acs.energyfuels.0c00911· OSTI ID:1660041

^[1]; Singh, Avantika ^[1]; ^[1]; Simmons, Ethan ^[1]; Johnston, Glenn ^[2]

National Renewable Energy Lab. (NREL), Golden, CO (United States)
Gevo Inc., Englewood, CO (United States)

Thirty-four gasoline blendstocks for oxygenate blending were used to create finished gasoline blends with isobutanol content of 12.5 volume percent (vol. %) and 16 vol. %. The gasoline blendstocks and finished fuels were analyzed for octane number (research [RON] and motor [MON]) to determine the effect of blending isobutanol. Volumetric and molar linear blending models were developed to predict finished fuel RON and MON, starting from the properties and composition of the gasoline blendstocks and isobutanol. Results show the molar blending model provided a better fit for the experimental data than the volumetric blending model. The volumetric model was further improved by adding nonlinear terms, improving the error to within ~1 ON. Gasoline blendstock properties impacted the finished fuel RON/MON, with paraffins having a synergistic effect with isobutanol and olefins and aromatics having an antagonistic effect.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Bioenergy Technologies Office (EE-3B); USDOE Office of Energy Efficiency and Renewable Energy (EERE), Small Business Voucher Program

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1660041

Report Number(s):: NREL/JA-5400-74574; MainId:6646; UUID:9940bbfa-35ba-e911-9c24-ac162d87dfe5; MainAdminID:13807

Journal Information:: Energy and Fuels, Journal Name: Energy and Fuels Journal Issue: 7 Vol. 34; ISSN 0887-0624

Publisher:: American Chemical Society (ACS)Copyright Statement

Country of Publication:: United States

Language:: English

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Octane Modeling of Isobutanol Blending into Gasoline

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