Synthesis of higher alcohols from syngas over Fischer-Tropsch elements modified K/β-MO2C catalysts

• Published in: Fuel (Guildford) Vol. 87; no. 4-5; pp. 599 - 603
• Main Authors: XIANG, M, LI, D, XIAO, H, ZHANG, J, QI, H, LI, W, ZHONG, B, SUN, Y
• Format: Conference Proceeding Journal Article
• Language: English
• Published: Oxford Elsevier 01.04.2008
• Subjects: Applied sciences; Energy; Exact sciences and technology; Fuel processing. Carbochemistry and petrochemistry; Fuels; Gas processing; Higher alcohols synthesis; Alcohol; Synthesis gas; Hydrogenation; K/β-MO2C; Fischer-Tropsch elements; Nickel; Molybdenum carbide; Performance; Activation energy; Potassium; Catalyst; Methanol
• ISSN: 0016-2361; 1873-7153
• DOI: 10.1016/j.fuel.2007.01.041

Fischer-Tropsch elements (Fe, Co and Ni) modified K/beta-Mo2C catalysts were prepared and investigated for their performance in CO hydrogenation. The results revealed that Ni or Co modified K/beta-Mo2C catalysts were shown to be highly active and selective towards the synthesis of mixed alcohols, especially for the production, but Fe caused a negative effect. Ni or Co led to a decrease in apparent activation energies for C1-C4 alcohols, whereas Fe caused a slight increase for methanol and the decrease for C2-C4 alcohols. As a result, the promotion effects of Fischer-Tropsch elements were different and followed the sequence: NiCo > Fe for the activity and Ni > Co > Fe for the alcohol selectivity.