Co–Ni bimetal catalyst supported on perovskite-type oxide for steam reforming of ethanol to produce hydrogen

• Published in: International journal of hydrogen energy Vol. 39; no. 11; pp. 5644 - 5652
• Main Authors: Wang, Zijun, Wang, Changxu, Chen, Shunquan, Liu, Yuan
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 04.04.2014; Elsevier
• Subjects: Alternative fuels. Production and utilization; Applied sciences; Bimetals; Carbon deposition; Catalysts; Cobalt; Energy; Ethanol; Ethanol steam reforming; Ethyl alcohol; Exact sciences and technology; Fuels; Hydrogen; Nanostructure; Nickel; Oxides; Perovskite type oxide; Reforming; Carbon deposition; Nickel; Cobalt; Ethanol steam reforming; Perovskite type oxide; Perovskite; Ethanol; Hydrogen; Steam reforming; Supported catalyst
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2014.01.151

Perovskite-type oxide (PTO) of LaFeO3 supported Ni–Co bimetallic catalysts were prepared by citric acid complexation-impregnation method and were used for the steam reforming of ethanol (SRE) to produce hydrogen. The anti-sintering and anti-coking properties of the catalysts for the reaction have been investigated and compared with the monometal catalysts. The catalysts were characterized by using temperature programmed reduction, X-ray diffraction, transmission electron microscopy and thermal analysis techniques. The results indicate that the catalyst was both highly selective to hydrogen and very stable for SRE reaction. Characterization results indicated that Ni–Co was in the state of solid solution alloy. Comparing with corresponding monometal catalysts, the bimetal catalyst exhibited better anti-sintering ability and similar anti-carbon deposition ability. The valuable information indicated in this work is that based on the special characters of PTO, bimetal nano-particles can be supported on metal oxides, which should be a new and promising method for preparing supported bimetal catalysts. •A simple method for loading bimetal nano particles on metal oxide has been developed.•The alloy nano particles of Ni–Co were loaded on La-doped LaFeO3.•Ni–Co/La2O3–LaFeO3 showed very good catalytic performance for ethanol steam reforming.•The bimetal catalyst showed better anti-sintering ability than the mono-metal catalysts.