Hydrodeoxygenation of guaiacol with CoMo catalysts. Part I: Promoting effect of cobalt on HDO selectivity and activity

✍ Scribed by Van Ngoc Bui; Dorothée Laurenti; Pavel Afanasiev; Christophe Geantet

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 390 KB
• Volume: 101
• Category: Article
• ISSN: 0926-3373
• DOI: 10.1016/j.apcatb.2010.10.025

✦ Synopsis

Unsupported and alumina-supported MoS 2 and CoMoS catalysts have been compared in the hydrodeoxygenation (HDO) reaction of guaiacol (2-methoxyphenol), a typical model molecule for bio-oils coming from the pyrolysis of ligno-cellulosic biomass. The goal of this work was to understand the cobalt promoting effect on MoS 2 phase in this type of catalytic reaction. It appeared clearly that in the presence of the CoMoS phase, the direct deoxygenation (DDO) pathway involved in guaiacol conversion was strongly increased as compared to the non-promoted MoS 2 in the bulk or supported state. This effect is similar to the well-known increase of direct desulfurization (DDS) pathway by cobalt promoter in the hydrodesulfurization (HDS) of refractory sulfur compounds over molybdenum sulfide catalysts.