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Multidimensional gas chromatographic determination of naphthenes, paraffins, olefins, and aromatics in reformed gasolines
Author(s) -
Lo Coco Filippo,
Gasparini Gianni,
Lanuzza Francesco
Publication year - 2007
Publication title -
journal of separation science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.72
H-Index - 102
eISSN - 1615-9314
pISSN - 1615-9306
DOI - 10.1002/jssc.200700158
Subject(s) - gasoline , fraction (chemistry) , chemistry , hydrocarbon , isomerization , refining (metallurgy) , composition (language) , gas chromatography , octane rating , naphtha , alkylation , oxygenate , cracking , organic chemistry , process engineering , chromatography , catalysis , linguistics , philosophy , engineering
Increasing demand for gasoline, changing regulations concerning the reduction of environmental impact, and new refining technologies have led to the refinement of its composition. Nowadays, gasoline is a complex mixture of different fractions deriving from processes of reforming, cracking, isomerization, and alkylation, with the addition of both oxygenated compounds and butanes. There are regulations governing the mixing of various fractions and it is necessary to analyse the composition of these fractions to ensure that the final composition of commercial gasoline satisfies the required specifications. Moreover, analysis of the composition of each fraction enables the technological process of the fraction examined to be modified as appropriate. In this work some reformed gasolines were analysed by multidimensional gas chromatography. This technique allows good separation of the hydrocarbon types in a single analysis and gives the carbon number distribution within each hydrocarbon type.