On the potassium-catalysed gasification of a Chilean bituminous coal

• Published in: Fuel (Guildford) Vol. 69; no. 6; pp. 789 - 791
• Main Authors: Gorrini, Bruno C., Radovic, Ljubisa R., Gordon, Alfredo L.
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01.06.1990; Elsevier
• Subjects: Applied sciences; bituminous coal; catalysis; Energy; Exact sciences and technology; Fuel processing. Carbochemistry and petrochemistry; Fuels; potassium; Solid fuel processing (coal, coke, brown coal, peat, wood, etc.); catalysis; bituminous coal; potassium; Chemisorption; Impregnation; Pyrolysis; Carbochemistry; Gasification; Potassium; Catalyst; Bituminous coal
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/0016-2361(90)90049-V

The effects of potassium loading and impregnation conditions on the pyrolysis and gasification behaviour of a Chilean bituminous coal were investigated. The degree of chemisorption of the catalyst precursor on the support (coal) was related to the surface chemistry of the coal. It was found to have a significant effect on the loss of catalyst during pyrolysis. It was concluded that the existence (or creation) of catalyst anchoring sites, such as carboxyl and hydroxyl groups in coals and coal chars, is more important for preventing potassium loss during pyrolysis and/or gasification than for ensuring its high dispersion during gasification.