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96/04526 Proton magnetic resonance thermal analysis of a brown coal: Effect of ion-exchanged metals


Publisher
Elsevier Science
Year
1996
Weight
196 KB
Volume
37
Category
Article
ISSN
0140-6701

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โœ Mary J. Wornat; Richard Sakurovs ๐Ÿ“‚ Article ๐Ÿ“… 1996 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 514 KB

Four versions of a Yallourn brown coal, each distinguished by the form of its carboxyl groups (acidic or cation-exchanged with Na, Ca or Ba), were subjected to proton magnetic resonance thermal analysis from 25 to 575ยฐC. Analysis of the profiles of two second-moment parameters, calculated from the t

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โœ Leo J. Lynch; David S. Webster ๐Ÿ“‚ Article ๐Ÿ“… 1982 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 580 KB

Proton nuclear magnetic resonance ('H n.m.r.) has been used to measure changes in the water-binding capacity of bed-moist brown coal lithotypes subjected to heat treatment. A rapid reduction in the coalwater interaction was found to occur at treatment temperatures > 420K. A Pale lithotype was found