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High-temperature 1H n.m.r. study of oxidized coal

✍ Scribed by Tetsuro Yokono; Kunio Miyazawa; Yuzo Sanada; Harry Marsh


Book ID
107755676
Publisher
Elsevier Science
Year
1981
Tongue
English
Weight
369 KB
Volume
60
Category
Article
ISSN
0016-2361

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Temperature and frequency-dependent proton relaxation measurements, in conjunction with spin concentrations determined by e.s.r., have shown that for fresh and oxidized coal the relaxation mechanism involves spin-diffusion to paramagnetic centres and to rotating methyl groups on alkyl chains. 1H rel