Chinese Journal of Catalysis ›› 2019, Vol. 40 ›› Issue (2): 214-222.DOI: 10.1016/S1872-2067(19)63276-6

• Articles • Previous Articles    

Synergism of Pt nanoparticles and iron oxide support for chemoselective hydrogenation of nitroarenes under mild conditions

Pei Jinga, Tao Gana, Hui Qib, Bin Zhenga, Xuefeng Chuc, Guiyang Yua, Wenfu Yana, Yongcun Zoua, Wenxiang Zhanga, Gang Liua   

  1. a State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, Jilin, China;
    b The Second Hospital of Jilin University, Changchun 130041, Jilin, China;
    c Provincial Key Laboratory of Architectural Electricity & Comprehensive Energy Saving, School of Electrical and Electronic Information Engineering, Jilin Jianzhu University, Changchun 130118, Jilin, China
  • Received:2018-12-18 Revised:2018-12-20 Online:2019-02-28 Published:2019-01-11
  • Contact: S1872-2067(19)63276-6
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (21473073, 21473074), "13th Five-Year" Science and Technology Research of the Education Department of Jilin Province (2016403), the Development Project of Science and Technology of Jilin Province (20170101171JC, 20180201068SF), and the Open Project of State Key Laboratory of Inorganic Synthesis and Preparative Chemistry (201703).

Abstract:

An efficient and low-cost supported Pt catalyst for hydrogenation of niroarenes was prepared with colloid Pt precursors and α-Fe2O3 as a support. The catalyst with Pt content as low as 0.2 wt% exhibits high activities, chemoselectivities and stability in the hydrogenation of nitrobenzene and a variety of niroarenes. The conversion of nitrobenzene can reach 3170 molconv h-1 molPt-1 under mild conditions (30℃, 5 bar), which is much higher than that of commercial Pt/C catalyst and many reported catalysts under similar reaction conditions. The spatial separation of the active sites for H2 dissociation and hydrogenation should be responsible for the high chemoselectivity, which decreases the contact possibility between the reducible groups of nitroarenes and Pt nanoparticles. The unique surface properties of α-Fe2O3 play an important role in the reaction process. It provides active sites for hydrogen spillover and reactant adsorption, and ultimately completes the hydrogenation of the nitro group on the catalyst surface.

Key words: Supported Pt catalyst, Iron oxide, Nitroarene hydrogenation, Chemoselectivity, Noble metal catalysis