Pyrolysis of brown coals. 1. Decompositi
โ
Harry N.S. Schafer
๐
Article
๐
1979
๐
Elsevier Science
๐
English
โ 738 KB
Carbon dioxide evolved on heating samples for 3 h, and carboxyl-group content of residues fmeqfg dry acid-form coal basis) Cation-form Coal form Acid-form Mg Ca Na COOH COOH COOH COOH z z G 3