Characterization of resins in alternative fuel mixtures
| dc.contributor.author | Karam, Hani Shukri | en |
| dc.contributor.committeechair | McNair, Harold M. | en |
| dc.contributor.committeemember | Taylor, Larry T. | en |
| dc.contributor.committeemember | Mason, John G. | en |
| dc.contributor.committeemember | Field, Paul E. | en |
| dc.contributor.committeemember | Finklea, Harry O. | en |
| dc.contributor.department | Chemistry | en |
| dc.date.accessioned | 2017-01-30T21:24:11Z | en |
| dc.date.available | 2017-01-30T21:24:11Z | en |
| dc.date.issued | 1986 | en |
| dc.description.abstract | "Resins" is a class of compounds believed to play an important role in the conversion processes of coal and coal-related materials into oils. Methods currently used to isolate this fraction, generally lack reproducibility and yield impure and strongly overlapping fractions which do not reflect the actual group-type distribution in the liquid fuel. A separation method based on liquid column chromatography was developed, which divides liquid fuels into eight distinct and minimally overlapping chemical classes: five non-polar (saturated, mono-, di-, tri-, and polynuclear aromatics), one intermediate polar (resins) and two polar (asphaltenes and asphaltols) fractions. Chemical characterization of "resins fractions," derived from two alternative fuels (coal-derived liquid and sugarcane bagasse), was achieved by first subjecting them to acid-base-neutral separation, followed by analysis of each subfraction by GC/MS. Identification of the eluted components was carried out utilizing a library search system, by comparing retention times (indices) of 150 model compounds believed to exist in liquid fuels, on two fused silica capillary columns (Carbowax 20 M and SE-54), and by mass spectral interpretation. GC/MS results indicate that "resins" are mainly composed of weakly acidic (phenols, indanols, naphthols), mildly basic (benzoquinolines, chloroanilines, etc.), neutral-nitrogen (indoles and carbazoles), and oxygen (carbonyl) compounds, and are free of hydrocarbons. | en |
| dc.description.degree | Ph. D. | en |
| dc.format.extent | xvi, 254 leaves | en |
| dc.format.mimetype | application/pdf | en |
| dc.identifier.uri | http://hdl.handle.net/10919/74736 | en |
| dc.language.iso | en_US | en |
| dc.publisher | Virginia Polytechnic Institute and State University | en |
| dc.relation.isformatof | OCLC# 14922711 | en |
| dc.rights | In Copyright | en |
| dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | en |
| dc.subject.lcc | LD5655.V856 1986.K372 | en |
| dc.subject.lcsh | Gums and resins -- Analysis | en |
| dc.subject.lcsh | Chromatographic analysis | en |
| dc.subject.lcsh | Mass spectrometry | en |
| dc.title | Characterization of resins in alternative fuel mixtures | en |
| dc.type | Dissertation | en |
| dc.type.dcmitype | Text | en |
| thesis.degree.discipline | Chemistry | en |
| thesis.degree.grantor | Virginia Polytechnic Institute and State University | en |
| thesis.degree.level | doctoral | en |
| thesis.degree.name | Ph. D. | en |
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