Structure-Dependent Selective Hydrogenation of α,β-Unsaturated Aldehydes over Platinum Nanocrystals Decorated with Nickel

Authors

  • Zhi Jiang,

    1. CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867
    2. University of Chinese Academy of Sciences, Beijing 100049 (P. R. China)
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  • Dr. Yonghui Zhao,

    1. CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867
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  • Dr. Lingzhao Kong,

    1. CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867
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  • Dr. Ziyu Liu,

    1. CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867
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  • Prof. Yan Zhu,

    Corresponding author
    1. CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867
    • CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867

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  • Prof. Yuhan Sun

    Corresponding author
    1. CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867
    • CAS Key Laboratory of Low-Carbon Conversion Science and Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, No. 100 Haike Road, Pudong District, Shanghai 201210 (P. R. China), Fax: (+86) 21-20350867

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Abstract

The shape sensitivity of monometallic Pt and bimetallic Pt[BOND]Ni nanocrystals in α,β-unsaturated aldehydes is studied by using a cubic shape enclosed by six {100} facets as well as an octahedral shape surrounded by eight {111} facets. Compared with monometallic Pt and bimetallic Pt[BOND]Ni cubic/octahedral shapes, Pt3Ni cubes enhanced the selective hydrogenation of the C[DOUBLE BOND]O double bond and suppressed the selective hydrogenation of the C[DOUBLE BOND]C double bond of the α,β-unsaturated aldehyde. The Pt, Pt3Ni, or PtNi octahedral shape is an unfavorable structure for C[DOUBLE BOND]O hydrogenation and enables the activation of the whole conjugated system of the molecule, which leads to complete hydrogenation to form the saturated alcohol product. The synergistic effects of the surface structure and electronic properties of Pt or Pt[BOND]Ni nanocrystals play a key role in controlling the selective hydrogenation of C[DOUBLE BOND]C and C[DOUBLE BOND]O bonds of α,β-unsaturated aldehydes.

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