Double‐Resonance Parameters for Solutions of Fresh Asphaltene

Autor:	Edward H. Poindexter, Michael J. Jeffries‐Harris
Rok vydání:	1963
Předmět:	Proton Chemistry Xylene Analytical chemistry General Physics and Astronomy Resonance Mineralogy law.invention Signal enhancement chemistry.chemical_compound law Asphalt Physical and Theoretical Chemistry Electron paramagnetic resonance Asphaltene
Zdroj:	The Journal of Chemical Physics. 38:148-150
ISSN:	1089-7690 0021-9606
DOI:	10.1063/1.1733453
Popis:	The parameters describing electron—proton double‐resonance phenomena in xylene solutions of fresh, washed asphaltene have been determined. The EPR line is found to be much more inhomogeneous than for air‐blown asphalt. The values of T1e, T2e, and proton signal enhancement indicate that the particles of fresh asphaltene tumble faster than particles of air‐blown asphalt. The surface electron—proton correlation frequency is found to be 30 Mc at 90°C.
Databáze:	OpenAIRE
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