Measurement of distributed total acid numbers by electrospray mass spectrometry
US7723115B2 · kind B2 · utility
5Cited by
0References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 2006 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | Mar 12, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/24
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention is a method to determine the TAN and TAN as a function of boiling point for a hydrocarbon feedstream using an electrospray ionization mass spectrometer (ESI-MS). The steps of the method include determining the signal as a function of mass from the ESI-MS while minimizing the formation of oligomers and fragmentation of the molecular species in the feedstream and then determining the TAN from the signals. The TAN is also determined as a function of boiling point.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.