Cobalt/manganese oxide catalysts: Use of chromium promoters for long chain hydrocarbon production

✍ Scribed by Saul E. Colley; Richard G. Copperthwaite; Graham J. Hutchings; Gary A. Foulds; Neil J. Coville

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 1017 KB
• Volume: 84
• Category: Article
• ISSN: 0926-860X
• DOI: 10.1016/0926-860x(92)80335-a

✦ Synopsis

Co/MnO (1: 1) catalysts, active for the carbon monoxide hydrogenation reaction, were modified with chromium promoters (2-25% by mass; relative to Co). Significant changes in hydrocarbon selectivities were observed consistent with an increase in chain propagation ( CY, increased from 0.90 to 0.94). Studies on the effect of operating pressure, temperature'and GHSV led to an optimization of medium wax yield for a selected level of chromium. Bulk and surface characterization techniques were used to investigate the catalyst formulation and to determine the origin(s) of the modified catalytic behaviour.