Fourier transform infrared (FTIR) chemometric method to determine cetane number of diesel fuels containing fatty acid alkyl ester additives
US7420170B2 · kind B2 · utility
1Cited by
4References
10Claims
0Family size
Assignee
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Key dates
| Filing date | Jan 9, 2007 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jan 9, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/3595
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a method to determine the cetane number of a diesel fuel containing a fatty acid alkyl ester including determining the infrared spectrum of the fuel and correlating the spectrum to the cetane number using a multivariate-based Mid-FTIR model. The fatty acid alkyl ester may be rapeseed methyl ester and the infrared spectrum includes the frequency ranges 4900-3500 cm−1 and 2200-1624 cm−1 or the frequency ranges 4900-3500 cm−1 2200-1800 cm−1 and 1700-1624 cm−1.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.