Structural Identification of the Monomeric Constituents of Petroleum Pitch
| Autor: | R. K. Marcus, Ward A. Burgess, Mark C. Thies, Jennifer J. Pittman |
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| Rok vydání: | 2010 |
| Předmět: |
Chrysene
Chromatography General Chemical Engineering Analytical chemistry Energy Engineering and Power Technology Fraction (chemistry) Mass spectrometry High-performance liquid chromatography Gel permeation chromatography chemistry.chemical_compound Fuel Technology Monomer chemistry Pyrene Naphthalene |
| Zdroj: | Energy & Fuels. 24:4301-4311 |
| ISSN: | 1520-5029 0887-0624 |
| Popis: | The monomer fraction of a representative petroleum pitch, M-50, was characterized in terms of both the predominant polycyclic aromatic hydrocarbon (PAH) backbones and their extent of alkylation. Such an identification of individual molecular species and their relative abundance was greatly facilitated by the use of a series of separation processes prior to analysis. In particular, low (up to 270), medium (270−335), and high (335−388) molecular-weight cuts of the monomeric fraction of the M-50 pitch were isolated by dense-gas extraction (DGE). The resultant three cuts were then further fractionated by preparative-scale gel permeation chromatography (prep-scale GPC) to obtain narrow molecular-weight fractions suitable for individual species identification by both matrix-assisted laser desorption/ionization (MALDI) time-of-flight mass spectrometry and reversed-phase high-performance liquid chromatography with photodiode array detection (HPLC/PDA). Results indicate that the monomer fraction consists of five d... |
| Databáze: | OpenAIRE |
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