A surface study of the CO hydrogenation reaction on fused iron catalysts

✍ Scribed by P. M. Loggenberg; M. E. Dry; R. G. Copperthwaite

• Publisher: John Wiley and Sons
• Year: 1990
• Tongue: English
• Weight: 473 KB
• Volume: 16
• Category: Article
• ISSN: 0142-2421
• DOI: 10.1002/sia.740160174

✦ Synopsis

Abstract

Promoted fused iron catalysts have been investigated after CO hydrogenation using x‐ray photoelectron spectroscopy. Three catalysts containing different levels of potassium were investigated. During synthesis at 600 kPa and 543 K, the K~2~O/(SiO~2~ + Al~2~O~3~) surface coverage ratios increased with time on‐line. The basicity of the catalysts as defined by the potassium/iron surface atomic ratio also increased. The corresponding hydrocarbon reaction products showed an increase in alkene selectivity and average molecular weight. As the surface coverage of potassium increased from one catalyst to another, so did the binding energy (BE) of the C (1s) signal associated with the adsorbed carbon species.