4.5 Article

Platinum Island-on-Copper-Nickel Alloy Nanoparticle/Carbon Trimetallic Nanocatalyst for Selective Hydrogenation of Cinnamaldehyde

Journal

CATALYSIS LETTERS
Volume 151, Issue 2, Pages 559-572

Publisher

SPRINGER
DOI: 10.1007/s10562-020-03295-9

Keywords

Pt-CuNi/C nanocatalyst; Catalytic hydrogenation; Platinum islands; Copper-nickel alloy

Funding

  1. National Natural Science Foundation of China [21763011]
  2. Natural Science Foundation of Jiangxi Province for Distinguished Young Scholars [20192BCB23015]
  3. Youth Jinggang Scholars Program in Jiangxi Province [[2019]57]
  4. China Postdoctoral Science Foundation [2018M642597]
  5. Foundation of State Key Laboratory of Coal Conversion [J20-21-609]
  6. Research Foundation of the Education Bureau of Jiangxi Province of China [GJJ190429]
  7. Postdoctoral Science Foundation of Jiangxi Province of China
  8. Program of Qingjiang Excellent Young Talents, Jiangxi University of Science and Technology [JXUSTQJBJ2019002]
  9. Program of Technology Innovation Talents of Ganzhou

Ask authors/readers for more resources

Two series of catalysts with tuned nanostructures exhibited much more excellent catalytic performance than catalysts with platinum-transition metal alloy structures and transition metal/carbon for the selective hydrogenation of cinnamaldehyde. The Pt-CuNi/C-reduced catalyst also showed superior stability in cinnamaldehyde hydrogenation.
Two series of catalysts, i.e., [Ni/C, Cu/C and CuNi/C] and [Pt-Ni/C, Pt-Cu/C and Pt-CuNi/C] were prepared by liquid phase chemical reduction and galvanic replacement, respectively. Pt/C was synthesized via an impregnation method. The nanostructures of these catalysts were tuned by being reduced in N-2 + H-2. Their nanostructures were characterized by TG, XPS, XRD, TEM, HRTEM and STEM-EDS elemental analysis techniques. The catalysts, which had unique nanostructures resulted from the loading of platinum islands on the transition metal related nanoparticles (i.e., Pt-Ni/C with Pt-on-Ni/Ni(OH)(2), Pt-Cu/C-reduced with Pt-on-Cu/CuO, Pt-CuNi/C-reduced with Pt-on-CuNi alloy), exhibited much more excellent catalytic performance (conversion of cinnamaldehyde: 100.0%, selectivity to cinnamyl alcohol: 62.9%, 64.6% and 72.6%, respectively) than the catalysts with platinum-transition metal alloy structure (e.g. Pt-Ni/C-reduced with PtNi alloy) and transition metal/carbon for the selective hydrogenation of cinnamaldehyde (80 degrees C, 5.0 MPa H-2, 1 h). The Pt-CuNi/C-reduced catalyst also showed superior stability in cinnamaldehyde hydrogenation. The outstanding performance of Pt-Ni/C, Pt-Cu/C-reduced and Pt-CuNi/C-reduced catalysts for cinnamaldehyde hydrogenation was attributed to the synergistic effect and interaction of platinum and non-noble metal related nanoparticles. [GRAPHICS] .

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