Dynamic nuclear polarization 13C n.m.r. of coal

Autor:	R.A. Wind, M.J. Duijvestijn, Struan D. Robertson, R.B. Jones, A.D.H. Clague, C. van der Lugt, J. Vriend, J. Smidt
Rok vydání:	1986
Předmět:	business.industry Chemistry General Chemical Engineering Organic Chemistry Analytical chemistry Maceral Energy Engineering and Power Technology Mineralogy Aromaticity Polarization (waves) complex mixtures Paramagnetism Fuel Technology Inertinite Coal Vitrinite business
Zdroj:	Fuel. 65:520-525
ISSN:	0016-2361
DOI:	10.1016/0016-2361(86)90043-8
Popis:	A novel n.m.r. method for determining the aromaticity of coal has been evaluated. Polarization transfer from the paramagnetic electrons is used to enhance the intensity of the 13 C n.m.r. spectrum. Analysis of five samples of Gondwana bituminous steam coals shows that the aromaticity of inertinite is far greater than that of vitrinite and that variation of maceral composition is a major factor determining coal aromaticity. This has been confirmed by the study of maceral concentrates.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2f499f2d9d43072d4ddc3d70fb5edb48 https://doi.org/10.1016/0016-2361(86)90043-8 Zobrazit plný text záznamu