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Effects of support and metal loading on the characteristics of Co based catalysts for selective hydrogenation of citral

✍ Scribed by K. Kouachi; G. Lafaye; C. Especel; O. Cherifi; P. Marécot

Publisher
Elsevier Science
Year
2008
Tongue
English
Weight
824 KB
Volume
280
Category
Article
ISSN
1381-1169

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✦ Synopsis

Silica-, alumina-and titania-supported Co catalysts with different metal loadings were tested for selective citral hydrogenation in liquid phase. Temperature programmed desorption of hydrogen (H 2 -TPD) indicated that the catalysts with the highest unsaturated alcohols selectivities present particular H-Co species. Electron diffraction and XRD measurements revealed that these species would be linked to the presence of Co 0 hexagonal phase. According to the results obtained by TEM and cyclohexane dehydrogenation, these two properties would be present on large Co particles.

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