An NMR study of the effect of hydrothermal dewatering on the structure of an Australian brown coal

S C Martin, C E Snape, J M Andresen, M M Maroto-Valer, L M Clemow, W R Jackson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effect of hydrothermal dewatering (HTD) on the structure of Loy Yang coal has been investigated by quantitative solid state C-13 and in situ broadline H-1 NMR, Treatment at 320 degrees C gives rise to significant decrease in aliphatic and CO/COOH functionality due to volatilization and thermal decomposition of the guest phase. Broadline H-1 NMR indicated that most of the hydrogen in the brown coal is relatively mobile (ca. 90%). However, after treatment, only 30% of the hydrogen remains so.

Original languageEnglish
Title of host publicationProspects for Coal Science in the 21st Century
EditorsBQ Li, ZY Liu
Place of PublicationShanxi
PublisherShanxi Science & Technology Press
Pages673-676
Number of pages4
Volume1-2
ISBN (Print)7-5377-1650-4
Publication statusPublished - 1999
Event10th International Conference on Coal Science - TAIYUAN
Duration: 12 Sep 199917 Sep 1999

Conference

Conference10th International Conference on Coal Science
CityTAIYUAN
Period12/09/9917/09/99

Cite this

Martin, S. C., Snape, C. E., Andresen, J. M., Maroto-Valer, M. M., Clemow, L. M., & Jackson, W. R. (1999). An NMR study of the effect of hydrothermal dewatering on the structure of an Australian brown coal. In BQ. Li, & ZY. Liu (Eds.), Prospects for Coal Science in the 21st Century (Vol. 1-2, pp. 673-676). Shanxi Science & Technology Press.