Details

Autor(en) / Beteiligte

• Manyar, Haresh G.
• Weber, Daniel
• Daly, Helen
• Thompson, Jillian M.
• Rooney, David W.
• Gladden, Lynn F.
• Hugh Stitt, E.
• Jose Delgado, J.
• Bernal, Serafin
• Hardacre, Christopher

Titel

Deactivation and regeneration of ruthenium on silica in the liquid-phase hydrogenation of butan-2-one

Ist Teil von

• Journal of catalysis, 2009-07, Vol.265 (1), p.80-88

Ort / Verlag

Amsterdam: Elsevier Inc

Erscheinungsjahr

2009

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Deactivation of a Ru/SiO 2 catalyst for butan-2-one hydrogenation in water has been found to be associated with the formation of Ru(OH) x ; however, this effect may be mitigated by the presence of secondary alcohols which form a hydrophobic surface coating. A Ru/SiO 2 catalyst was investigated for the liquid-phase hydrogenation of butan-2-one to butan-2-ol with water as a medium. Although excellent reactivity was observed, a gradual deactivation of the catalyst was found on recycle of the catalyst. The spent catalyst was characterized by using XRD, XPS, TEM, TPR, CO chemisorption, FTIR and ICP analyses. Formation of Ru(OH) x surface species is proposed to be the main cause of catalyst deactivation with no significant Ru leaching into the reaction mixture. Following catalyst regeneration, up to 85% of the initial catalytic activity could be recovered successfully. Moreover, adsorption of secondary aliphatic alcohols on the catalyst was found to significantly reduce the formation of Ru(OH) x during the reaction, thus protecting the catalyst from deactivation.