Molecules (Sep 2022)

Design of Pd–Zn Bimetal MOF Nanosheets and MOF-Derived Pd<sub>3.9</sub>Zn<sub>6.1</sub>/CNS Catalyst for Selective Hydrogenation of Acetylene under Simulated Front-End Conditions

  • Xinxiang Cao,
  • Ruijian Tong,
  • Siye Tang,
  • Ben W. -L. Jang,
  • Arash Mirjalili,
  • Jiayi Li,
  • Xining Guo,
  • Jingyi Zhang,
  • Jiaxue Hu,
  • Xin Meng

DOI
https://doi.org/10.3390/molecules27175736
Journal volume & issue
Vol. 27, no. 17
p. 5736

Abstract

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Novel zinc–palladium–porphyrin bimetal metal–organic framework (MOF) nanosheets were directly synthesized by coordination chelation between Zn(II) and Pd(II) tetra(4-carboxyphenyl)porphin (TCPP(Pd)) using a solvothermal method. Furthermore, a serial of carbon nanosheets supported Pd–Zn intermetallics (Pd–Zn-ins/CNS) with different Pd: Zn atomic ratios were obtained by one-step carbonization under different temperature using the prepared Zn-TCPP(Pd) MOF nanosheets as precursor. In the carbonization process, Pd–Zn-ins went through the transformation from PdZn (650 °C) to Pd3.9Zn6.1 (~950 °C) then to Pd3.9Zn6.1/Pd (1000 °C) with the temperature increasing. The synthesized Pd–Zn-ins/CNS were further employed as catalysts for selective hydrogenation of acetylene. Pd3.9Zn6.1 showed the best catalytic performance compared with other Pd–Zn intermetallic forms.

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