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- W12644558 abstract "The described fractionation scheme, using sequential columns of silica, alumina and a strong base ion exchange resin, provides separation of process derived coal liquefaction recycle solvents into chemically different fractions containing various hydrocarbons, mono, di and polyaromatics including sulfur containing heterocycles; furans; non basic N; basic nitrogen species; mono-phenols and polyfunctional compounds. The combination of fractionation with additional study by elemental analyses, FIMS as well as by other spectral methods leads to a good chemical characterization of each fraction, and the total solvent. The developed method allows for the circumvention of any problems normally encountered in separating the desired functionalities. The utilization of such method coupled with characterization of the chemical groups obtained allows for the gain of a more thorough understanding of the chemistry of coal-solvent interaction and can lead to a more detailed identification of the chemical composition of recycle solvents. The latter premise is presently being investigated, for a variety of full range process derived recycle solvents (400 to 800/sup 0/F)." @default.
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- W12644558 date "1981-03-29" @default.
- W12644558 modified "2023-09-28" @default.
- W12644558 title "Chromatographic separation of functional group classes from process derived recycle solvents" @default.
- W12644558 hasPublicationYear "1981" @default.
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