Design of Pd-Zn Bimetal MOF Nanosheets and MOF-Derived Pd3.9Zn6.1/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:10.3390/molecules27175736

Design of Pd-Zn Bimetal MOF Nanosheets and MOF-Derived Pd_3.9Zn_6.1/CNS Catalyst for Selective Hydrogenation of Acetylene under Simulated Front-End Conditions

Molecules. 2022 Sep 5;27(17):5736. doi: 10.3390/molecules27175736.

Authors

Affiliations

¹ Laboratory for Development & Application of Cold Plasma Technology, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China.
² School of Agriculture and Bioengineering, Heze University, Heze 274015, China.
³ Department of Chemistry, Texas A&M University-Commerce, Commerce, TX 75429-3011, USA.
⁴ Department of Chemistry, University of California, Riverside, CA 92521, USA.

Abstract

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 Pd_3.9Zn_6.1 (~950 °C) then to Pd_3.9Zn_6.1/Pd (1000 °C) with the temperature increasing. The synthesized Pd-Zn-ins/CNS were further employed as catalysts for selective hydrogenation of acetylene. Pd_3.9Zn_6.1 showed the best catalytic performance compared with other Pd-Zn intermetallic forms.

Keywords: acetylene; carbonization; metal–organic framework; nanosheet; palladium–zinc intermetallic; porphyrin; selective hydrogenation.

Abstract

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