Gel permeation chromatography of coal extracts
Journal Article
·
· Solid Fuel Chem. (Engl. Transl.); (United States)
OSTI ID:6828221
In the reported experiments, investigations have been made of the molecular-weight distribution of coal extracts by gel permeation chromatography on a Waters instrument fitted with Styragel columns using tetrahydrofuran as eluent. The molecular-weight composition of organic extracts obtained by the treatment of coals with various solvents has been analyzed and it has been concluded that associates are present in the coal. The parameters of the molecular-weight distribution have been calculated using various calibrations. The possibility has been shown of the preparative separation of coal extracts on the gel Sephadex LH-20. The hypothesis has been put forward that coal consists of an oligomeric polyassociate with an intermolecular interaction of the donor-acceptor type. 9 refs.
- OSTI ID:
- 6828221
- Journal Information:
- Solid Fuel Chem. (Engl. Transl.); (United States), Journal Name: Solid Fuel Chem. (Engl. Transl.); (United States) Vol. 15:5; ISSN SFCHD
- Country of Publication:
- United States
- Language:
- English
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