Exxon Research and Engineering Company

Mark W Genowitz

Wolfgang W Schulz

A quantitative method including separating a mixture of olefins, aromatics, and saturates by supercritical fluid chromatography to obtain an eluent stream that over a first time period contains a mixture of olefins and saturates, and over a second time period contains aromatics, and passing the eluent first to an ultraviolet absorption detector (UV). Importantly, the eluent is irradiated in the UV detector at a wavelength capable of producing an ultraviolet absorbance response of olefins that is independent of specific olefins present, and preferably is substantially similar to a mass detector response for olefins. From a combination of UV and mass response, the mass of the olefins in the mixture of olefins and saturates can be determined. Thereafter, the eluent is passed to a mass detector whereby the mass of the mixture of saturates and olefins is determined and then the mass of the aromatics is determined.

Growing community of inventors

Phillipsburg, NJ, United States of America

Mark W Genowitz