PtM (M =Ni, Fe, Co) alloy nanopartilces were synthesized by a liquid phase reduction method employing butyllithium as a reducing agent. The alumina supported PtM materials were then used as precursors to obtain the Pt-MxOy/Al2O3 catalysts through calcination. The influence of synthesis conditions of PtM alloy nanoparticles and the catalytic performance of the Pt-MxOy/Al2O3 catalysts for p-chloronitrobenzene hydrogenation reaction were investigated. The relevant characterizations such as XRD, XPS and TEM were conducted for PtM alloy nanoparticles and Pt-MxOy/Al2O3 catalysts, and the result showed that the PtM nanoparticles are uniform alloy. Moreover, compared to PtM alloy nanoparticles, the Pt particle size of Pt-MxOy/Al2O3 using PtM alloy nanoparticle precursors did not increase by calcination, indicating good thermal stability. The catalytic activities of Pt-MxOy/Al2O3 for p-chloronitrobenzene hydrogenation reaction were significantly higher than that of control Pt/Al2O3 catalysts due to its strong Pt-MxOyinteraction.KeywordsNanoparticles; metal-support interaction; hydrogenation; p-chloroaniline; bimetallic alloyAcknowledgementsWe are grateful for generous funding from China Zhejiang Provincial Natural Science Foundation under Grant No. Y4110116 and the Ministry of Science and Technology of the People's Republic ofChinaunder Grant No. 2012DFA40550.  Schematic diagram for the syntheses of PtM/Al2O3 and Pt-MxOy/Al2O3 (M =Ni, Fe, Co), and the small black particles represents MxOy particles

Enhanced catalytic hydrogenation activity and selectivity of Pt-MxOy/Al2O3(M =Ni, Fe, Co) heteroaggregate catalysts by in-situ transformation of PtM alloy nanoparticles

246th National Meeting (2013)

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