A model approach to highly dispersing catalytic materials in coal for gasification. Eleventh quarterly report, April 1, 1992--June 30, 1992
This project seeks to develop a technique, based on coal surface properties, for highly dispersing catalysts in coal for gasification and to investigate the potential of using potassium carbonate and calcium acetate mixtures as catalysts for coal gasification. The lower cost and higher catalytic activity of the latter compound will produce economic benefits by reducing the amount of K{sub 2}CO{sub 3} required for high coal char reactivities. As was shown in previous reports, coal loading with potassium or calcium at different pHs produced CO{sub 2} gasification activities which increased in the order pH 6 > pH 10 >>pH 1. A similar trend was obtained when calcium and potassium were simultaneously loaded and char reaction times were less than about 75 min. In the last quarter, the potential application of ammonia as a reactive medium for coal gasification has been investigated. This gas has not been previously applied to coal gasification. However, related work suggests that the potential chemical feedstock base can be broadened by using ammonia to generate hydrogen cyanide and cyanogen from coal. The current report shows that the reactivity of a demineralized lignite in ammonia is significantly higher in the presence of calcium or potassium catalyst than that for the char without added catalyst and suggests that ammonia is a potentially reactive gas for catalyzed coal gasification.
- Research Organization:
- Clark Atlanta Univ., GA (United States). Research Center for Science and Technology
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- FG22-89PC89760
- OSTI ID:
- 10184916
- Report Number(s):
- DOE/PC/89760-T11; ON: DE93001269
- Resource Relation:
- Other Information: PBD: [1992]
- Country of Publication:
- United States
- Language:
- English
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