Separation and identification of the major C7 to C10 components of triptene residue

Abstract

h ydrocarbons, a series of systematic di stillations was carried out on "triptene residue, " a synthetic alkyl ate made at the Radford Laboratories of the General Motors Corporation.This report describes the isolation thereby of two heptenes, four octenes, and three nonenes; the identification of fonr heptenes, two octenes, three nonenes, and six decenes not resolvable by fractional distillation ; and the isolation of two heptanes, two octanes, one nonane, and five decanes formed by hydrogenation of mixtures of olefins. Physical const-ants for the isolated products and graphs showing the course of the several distillation are presented .The analysis presented is based, where individual olefins were isolated, on the di stillation' curves; where the mixtures obtained by di stillation were more complex, the analysis is based on ozonolysis data and/or di stillation data of the hydrogenated product.The mechanism of successive methylation by which the several olefins in the mixtu.re were derived has been shown to be valid.

Distillation

“…The group at the National Bureau of Standards has continued the use of distillation as an important step in the analysis of a number of petroleum and other hydrocarbon mixtures (18,27,28,66). Similar applications have been carried out by others (13,32,50,53,69).…”