U.S. Department of EnergyOffice of Scientific and Technical Information
A novel approach to highly dispersing catalytic materials in coal for gasification
Abstract
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 catalyst for coal gasification. The lower cost and high 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 activities. The effects of potassium impregnation conditions (pH and coal surface charge) on the reactivities, in carbon dioxide, of chars derived from demineralized lignite, subbituminous and bituminous coals have been determined. Impregnation of the acid-leached coal with potassium from strongly acidic solutions resulted in initial slow char reactivity which progressively increased with reaction time. Higher reactivities were obtained for catalyst (potassium) loaded at pH 6 or 10. The dependence of char gasification rates on catalyst addition pH increased in the order: pH 6 {approximately} pH 10 {much gt} pH 1.
- Authors:
- Publication Date:
- Research Org.:
- Clark Atlanta Univ., GA (United States). Research Center for Science and Technology
- Sponsoring Org.:
- USDOE; USDOE, Washington, DC (United States)
- OSTI Identifier:
- 5916792
- Report Number(s):
- DOE/PC/89760-T6
ON: DE92004867
- DOE Contract Number:
- FG22-89PC89760
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 01 COAL, LIGNITE, AND PEAT; ACETATES; CATALYTIC EFFECTS; CALCIUM COMPOUNDS; COAL; SURFACE PROPERTIES; POTASSIUM CARBONATES; BITUMINOUS COAL; CHARS; COAL GASIFICATION; LIGNITE; PH VALUE; PROGRESS REPORT; SUBBITUMINOUS COAL; ALKALI METAL COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; BLACK COAL; BROWN COAL; CARBON COMPOUNDS; CARBONACEOUS MATERIALS; CARBONATES; CARBOXYLIC ACID SALTS; DOCUMENT TYPES; ENERGY SOURCES; FOSSIL FUELS; FUELS; GASIFICATION; MATERIALS; OXYGEN COMPOUNDS; POTASSIUM COMPOUNDS; PYROLYSIS PRODUCTS; THERMOCHEMICAL PROCESSES; 010404* - Coal, Lignite, & Peat- Gasification
Citation Formats
Abotsi, G M.K., and Bota, K B. A novel approach to highly dispersing catalytic materials in coal for gasification. United States: N. p., 1991.
Web. doi:10.2172/5916792.
Abotsi, G M.K., & Bota, K B. A novel approach to highly dispersing catalytic materials in coal for gasification. United States. https://doi.org/10.2172/5916792
Abotsi, G M.K., and Bota, K B. 1991.
"A novel approach to highly dispersing catalytic materials in coal for gasification". United States. https://doi.org/10.2172/5916792. https://www.osti.gov/servlets/purl/5916792.
@article{osti_5916792,
title = {A novel approach to highly dispersing catalytic materials in coal for gasification},
author = {Abotsi, G M.K. and Bota, K B},
abstractNote = {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 catalyst for coal gasification. The lower cost and high 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 activities. The effects of potassium impregnation conditions (pH and coal surface charge) on the reactivities, in carbon dioxide, of chars derived from demineralized lignite, subbituminous and bituminous coals have been determined. Impregnation of the acid-leached coal with potassium from strongly acidic solutions resulted in initial slow char reactivity which progressively increased with reaction time. Higher reactivities were obtained for catalyst (potassium) loaded at pH 6 or 10. The dependence of char gasification rates on catalyst addition pH increased in the order: pH 6 {approximately} pH 10 {much gt} pH 1.},
doi = {10.2172/5916792},
url = {https://www.osti.gov/biblio/5916792},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jan 01 00:00:00 EST 1991},
month = {Tue Jan 01 00:00:00 EST 1991}
}