Exxonmobil Research and Engineering Company

Stephen B Jaffe

William Neergaard Olmstead

Kuangnan Qian

Larry Arthur Green

Roland Bernard Saeger

Roland B Saeger

James M Brown

Clinton R Kennedy

Kathleen E Edwards

Helen S Wellons

Anantha Sundaram

Jason B English

Gary J Dechert

A method for determining the composition of a material including the steps of fitting multivariate analytical data of the material to a combination of multivariate analytical data in a database to determine coefficients of the combination so as to determine a reference model of composition based on the coefficients and the compositions in the database, wherein the database includes multivariate analytical data of database materials whose compositions are known, and reconciling the reference model of composition to match properties of the material.

Estimating detailed compositional information from limited analytical data

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.

Measurement of distributed total acid numbers by electrospray mass spectrometry

The present invention is a method to determine the composition of a hydrocarbon feedstream from a small sample of hydrocarbons including the steps analyzing the sample with a combination of chromatograph and mass spectrometer, and reconciling output from step a) with other analytical measurements to determine to determine the composition of the hydrocarbon feedstream.

Micro-hydrocarbon analysis

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Moorestown, NJ, United States of America

Stephen B Jaffe