Proton NMR analysis of octane number for motor gasoline: Part V

Journal Article · Thu Oct 01 04:00:00 EDT 1992 · Applied Spectroscopy

DOI:https://doi.org/10.1366/000370292789619188· OSTI ID:39267

Ichikawa, M; Nonaka, N; Amano, H; Takada, I; Ishimori, S ^[1]; Andoh, H; Kumamoto, K ^[2]

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1. Suzuki Motor Corp., Hamamatsu (Japan)
2. Showa Shell Sikiyu Tokyo (Japan)

A method to predict the octane number of automobile gasoline containing methyl tert-butyl ether (MTBE) by proton magnetic resonance (PMR) spectrometry was studied. Samples of gasoline whose octane numbers had been identified according to the ASTM standards (commercially available premium gasoline to which MTBE was added at rates of 7 vol % and 14 vol %) were used in this investigation of the effect of MTBE on the octane number. The findings were utilized to introduce a term regarding MTBE into the previously reported linear regression equation for estimating the octane number from the PMR spectrum, and the appropriateness of the linear regression equation was assessed. As a result the MTBE contents in the sample were determined with satisfactory accuracy by using a standard addition method, and a linear regression equation reflecting the effect of MTBE was obtained. These achievements are reported. 11 refs., 3 figs., 5 tabs.

• Sponsoring Organization: USDOE
• OSTI ID: 39267
• Journal Information: Applied Spectroscopy, Journal Name: Applied Spectroscopy Journal Issue: 10 Vol. 46; ISSN 0003-7028; ISSN APSPA4
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
ANTIKNOCK RATINGS
GASOLINE
NUCLEAR MAGNETIC RESONANCE
REGRESSION ANALYSIS