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Catalytic effects of alkali metal salts in the gasification of coal char

Conference ·
OSTI ID:5568073
A study has been made of the kinetics of gasification, in carbon dioxide and steam, of a char derived from Illinois No. 6 coal doped with small amounts of alkali metal salts. A progressive loss in catalytic activity was observed during the course of the steam gasification reaction at 700 to 1000/sup 0/C and on thermal cycling between gasification temperatures and 25/sup 0/C. This deactivation appeared to result from reaction of the alkali salts with mineral matter in the char. The catalytic behavior of the alkali carbonates are discussed in terms of sequences of elementary reactions involving interaction of the catalyst particles with the carbon substrate and with the gaseous environment.
Research Organization:
General Electric Co., Schenectady, NY (USA). Corporate Research and Development Dept.
DOE Contract Number:
AC21-80MC14591
OSTI ID:
5568073
Report Number(s):
CONF-820304-2; ON: DE82000850
Country of Publication:
United States
Language:
English