Method for the direct determination of physical properties...

Details Method for the direct determination of physical properties... Method for the direct determination of physical properties...

G - Physics

01

N

354/29, 73/55

G01N 21/35 (2006.01) C10G 35/24 (2006.01) G01N 33/28 (2006.01)

Patent

CA 1333447

The properties of a product and/or the yield of the product from a hydrocarbon conversion or separation process are determined from the NIR (Near Infra Red) spectrum of the feedstock by a method which comprises the following steps: (a) determining with an IR spectrometer the absorbance of the feedstock at a certain number of frequencies in the spectral range 16667 to 3840 cm-1, preferably 12500 to 3840 cm-1, most preferably 4760 to 4999 cm-l starting from a defined base line, and (b) determining the property by applying a correlation between the property and the absorbance values, the correlation being determined experimentally by multivariate regression, depending on the type of spectrometer used, the property required, and the frequencies used.

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