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Updated: May 2, 2026

Original Experimental Approach for Assessing Transport Fuel Stability
Published on: October 21, 2016
[Characterization of C5-C7 alkenes in gasoline from methanol to olefins process using gas chromatography-mass
Jiwen Li1, Wei Li2, Chuan Wang2
1SINOPEC Shanghai Research Institute of Petrochemical Technology, Shanghai 201208, China. lijw.sshy@sinopec.com
Abstract:
Gas chromatography-mass spectrometry (GC-MS) qualitative characterization of C5 -C7 alkenes in gasoline from methanol to olefins (MTO) was investigated in detail. It showed that the retention indices of 49 alkenes, 11 alkadienes and 9 cycloalkenes, a total of 69 C5-C7 isomeric alkenes were determined and qualitatively confirmed. The retention indices of all C5-C7 alkenes in MTO gasoline were measured on polydimethylsiloxane as the stationary phase. According to the library of retention indices by GC-MS characterization, the contents of C5-C7 alkenes in MTO gasoline were analyzed by GC and characterized by its composition of hydrocarbon categories. The results of quantitative analysis showed that the composition of MTO gasoline mainly consisted of C5-C7 alkenes, and a small amount of alkadienes and cycloalkenes. The contents of alkanes and cycloalkanes existed in MTO gasoline were very low. The study of the composition is helpful for the comprehensive application of MTO gasoline.
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