Quantitative FT 13C n.m.r. of solvent-refined coals using sym-triazine as solvent

Autor:	Kaizaburo Saito, Virgil I. Stenberg, R.J. Baltisberger, Neil F. Woolsey
Rok vydání:	1981
Předmět:	Chloroform General Chemical Engineering Organic Chemistry Energy Engineering and Power Technology chemistry.chemical_element Fraction (chemistry) Solvent chemistry.chemical_compound Fuel Technology chemistry Organic chemistry Structural relation Benzene Carbon Nuclear chemistry Triazine
Zdroj:	Fuel. 60:1039-1042
ISSN:	0016-2361
DOI:	10.1016/0016-2361(81)90046-6
Popis:	Aromaticities (fa) determined for several solvent-refined coals (SRC) by 13C n.m.r. in sym-triazine solution and by the Brown and Ladner 1H n.m.r. technique have been found to be the same within experimental error (0.01). Use of sym-triazine to determine the fa of the soluble and insoluble fractions of a SRC in several solvents showed that the soluble fraction reflected reasonably accurately the properties of the whole sample for dioxan, carbon disulphide, chloroform and benzene extracts. The properties of the insoluble fraction varied only slightly. A more detailed analysis of the aromatic region of the 13C n.m.r. spectrum has led to some useful structural relations.
Databáze:	OpenAIRE
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