Vapour Phase Hydrogenation of Phenol over Rhodium on SBA-15 and SBA-16
AbstractIn the present work, mesoporous SBA-15 and SBA-16 were synthesised using classical methods, and their physicochemical properties were investigated by X-ray diffraction (XRD), FTIR, TEM and N2 adsorption–desorption. Rhodium (Rh, 1 wt %) was loaded on the mesoporous SBA-15 and SBA-16 by an impregnation method. The Rh surface coverage, dispersion and crystallite size were determined by room temperature H2 chemisorption on reduced samples. The catalytic activity of Rh supported on mesoporous SBA-15 and SBA-16 was evaluated for the first time in the hydrogenation of phenol in vapour phase in a temperature range between 130 and 270 °C at atmospheric pressure. The reaction over Rh/SBA-15 at 180 °C produced cyclohexanone as the major product (about 60%) along with lower amounts of cyclohexanol (about 35%) and cyclohexane (about 15%). The influences of temperature, H2/phenol ratio, contact time and the nature of the solvent on the catalytic performance were systematically investigated. The Rh/SBA-16 system offered lower phenol conversion compared to Rh/SBA-15, but both have a very high selectivity for cyclohexanone (above 60%). View Full-Text
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Giraldo, L.; Bastidas-Barranco, M.; Moreno-Piraján, J.C. Vapour Phase Hydrogenation of Phenol over Rhodium on SBA-15 and SBA-16. Molecules 2014, 19, 20594-20612.
Giraldo L, Bastidas-Barranco M, Moreno-Piraján JC. Vapour Phase Hydrogenation of Phenol over Rhodium on SBA-15 and SBA-16. Molecules. 2014; 19(12):20594-20612.Chicago/Turabian Style
Giraldo, Liliana; Bastidas-Barranco, Marlon; Moreno-Piraján, Juan C. 2014. "Vapour Phase Hydrogenation of Phenol over Rhodium on SBA-15 and SBA-16." Molecules 19, no. 12: 20594-20612.