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Effects of support and metal loading on the characteristics of Co based catalysts for selective hydrogenation of citral |
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| Authors: | K Kouachi G Lafaye C Especel O Cherifi P Marcot |
| Institution: | aUniversité de Poitiers, Laboratoire de Catalyse en Chimie Organique, UMR 6503, 86022 Poitiers, France bLaboratoire de Chimie de Gaz Naturel, Faculté de Chimie, USTHB, BP 32, 16111 El Alia, Bab Ezzouar, Algeria |
| Abstract: | 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 (H2-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 Co0 hexagonal phase. According to the results obtained by TEM and cyclohexane dehydrogenation, these two properties would be present on large Co particles. |
| Keywords: | Cobalt Catalysts Selective hydrogenation Citral |
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