Effects of Yttrium Doping on the Performance of Ru-Based Catalysts for Hydrogenation of Fatty Acid Methyl Ester
- 1 Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, China
- 2 Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, China
- 3 Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, China
- 4 Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, China
- 5 Department of Chemistry and Chemical Engineering, Minjiang University, Fuzhou, China
Abstract
The highly dispersed supported ruthenium-yttrium (Ru-Y) bimetallic catalysts were prepared by impregnation method and their catalytic performance for hydrogenation of ester was fully investigated. The catalyst was characterized by X-ray diffraction and field emission scanning electron microscopy. The results show that the average particle diameter of the bimetallic crystallites was less than 10 nm. The effects of the reaction temperature, the hydrogen pressure, the amount of catalyst and the proportion of yttrium in catalyst on the hydrogenation of ester were studied. The experimental results show that the introduction of yttrium not only changed the chemical and textural properties of ruthenium-based catalyst but also controlled the formation of Ru-Y alloy. The Ru-Y catalyst (Ru-2%Y/TiO 2 ) exhibited high catalytic activity and good selectivity towards the higher alcohols. Under optimal reaction conditions of 240°C and 5 MPa hydrogen pressure, the conversion of palm oil esters was above 93.4% while the selectivity towards alcohol was above 99.0%.
- Weissermel, K. and Arpe, H.-J. (1994) Industrielle Organische Chemie. 4th Edition, VCH Verlagsgesellschaft mbH, Deerfield Beach.
- Echeverri, D.A., Marín, J., Restrepo, G. and Riso, L. (2009) Characterization and Carbonylic Hydrogenation of Methyl Oleate over Ru-Sn/Al2O3: Effects of Metal Precursor and Chlorine Removal. Applied Catalysis A: General, 366, 342-347. http://dx.doi.org/10.1016/j.apcata.2009.07.029
- Yuan, P., Liu, Z.Y., Sun, H.J. and Liu, S.C. (2010) Influence of Calcination Temperature on the Performance of Cu-Al-Ba Catalyst for Hydrogenation of Esters to Alcohols. Acta Physico-Chimica Sinica, 26, 2235-2241. http://dx.doi.org/10.3866/PKU.WHXB20100642
- Figueiredo, F.C.A., Jordao, E. and Carvalho, W. (2008) Adipic Ester Hydrogenation Catalyzed by Platinum Supported in Alumina, Titania and Pillared Clays. Applied Catalysis A: General, 351, 259-266. http://dx.doi.org/10.1016/j.apcata.2008.09.027
- He, L., Li, X., Lin, W., Cheng, H., Yu, Y., Fujita, S., Arai, M. and Zhao, F. (2014) The Selective Hydrogenation of Ethyl Stearate to Stearyl Alcohol over Cu/Fe Bimetallic Catalysts. Journal of Molecular Catalysis A: Chemical, 392, 143-149. http://dx.doi.org/10.1016/j.molcata.2014.05.009
- Vigier, K., Pouilloux, Y. and Barrault, J. (2012) High Efficiency CoSn/ZnO Catalysts for the Hydrogenation of Methyl Oleate. Catalysis Today, 195, 71-75. http://dx.doi.org/10.1016/j.cattod.2012.04.027
- Zheng, J., Lin, H., Wang, Y., Zheng, X., Duan, X. and Yuan, Y. (2013) Efficient Low-Temperature Selective Hydrogenation of Esters on Bimetallic Au-Ag/SBA-15 Catalyst. Journal of Catalysis, 297, 110-118. http://dx.doi.org/10.1016/j.jcat.2012.09.023