Analysis of East Texas Virgin Naphtha Fractions Boiling up to 270� F

Abstract

The individual paraffins and naphthenes in complex hydrocarbon mixtures boiling up to 270°F. can be

Houdriforming of Hydrocracked Naphthas

“…In the preponderance of mono and dimethyl paraffins and in the almost complete absence of quaternary Catoms, the composition of the hydrogenatively cracked naphtha is similar to that of a straight run naphtha from the same source (4). This tends to confirm the impression that hydrogenative cracking of gas oils lowers the molecular weight of hydrocarbons while establishing a product distribution of hydrocarbons in the gasoline boiling range similar to that prevailing in the corresponding straight run fractions.…”

Composition of Crude Oil through Seven Carbons as Determined by Gas Chromatography

“…The small °Eluted with another component on this column. 1 Not eluted together on this column. 6 No individual peaks from these components obtained; values given were calculated by comparing results from two columns.…”

“…Determination of the individual hydrocarbons in the lower-boiling fraction has heretofore required weeks or months of tedious separations by distillation and adsorption chromatography, followed by measurement of physical properties of the fractions (9,10,(14)(15)(16)(17). Infrared spectroscopy (1), mass spectrometry (2, 3), and a combination of Raman spectroscopy with dehydrogenation-hydrogenation techniques (11,18) have helped in analyzing the fractions, but have not appreciably reduced the over-all time of analysis. Previous experience has indicated that at least the lower-boiling compounds in crude oil should be easier to determine by gas chromatography.…”

Composition of Naphtha from Fluid Catalytic Cracking

“…Valves A and B are closed, valves C and D are opened, and the 3-liter bomb contained in the rocking autoclave, E, is evacuated by means of the vacuum pump, F. Valve A is then opened and about 1500 ml. of distilled water are admitted to the bomb from 1 Present address, Naval Ordnance Testing Station, Inyokern, Caiif.…”