用于模拟前端条件下乙炔选择性加氢的钯锌双金属金属有机框架纳米片及金属有机框架衍生的钯锌/碳纳米片催化剂的设计
Design of Pd-Zn Bimetal MOF Nanosheets and MOF-Derived PdZn/CNS Catalyst for Selective Hydrogenation of Acetylene under Simulated Front-End Conditions.
作者信息
Cao Xinxiang, Tong Ruijian, Tang Siye, Jang Ben W-L, Mirjalili Arash, Li Jiayi, Guo Xining, Zhang Jingyi, Hu Jiaxue, Meng Xin
机构信息
Laboratory for Development & Application of Cold Plasma Technology, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471022, China.
School of Agriculture and Bioengineering, Heze University, Heze 274015, China.
出版信息
Molecules. 2022 Sep 5;27(17):5736. doi: 10.3390/molecules27175736.
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 PdZn (~950 °C) then to PdZn/Pd (1000 °C) with the temperature increasing. The synthesized Pd-Zn-ins/CNS were further employed as catalysts for selective hydrogenation of acetylene. PdZn showed the best catalytic performance compared with other Pd-Zn intermetallic forms.
采用溶剂热法，通过锌（II）与四（4-羧基苯基）卟啉钯（II）（TCPP（Pd））之间的配位螯合直接合成了新型锌-钯-卟啉双金属金属有机框架（MOF）纳米片。此外，以制备的Zn-TCPP（Pd）MOF纳米片为前驱体，在不同温度下通过一步碳化获得了一系列具有不同钯：锌原子比的碳纳米片负载钯-锌金属间化合物（Pd-Zn-ins/CNS）。在碳化过程中，随着温度升高，Pd-Zn-ins经历了从PdZn（650℃）到PdZn（~950℃）再到PdZn/Pd（1000℃）的转变。合成的Pd-Zn-ins/CNS进一步用作乙炔选择性加氢的催化剂。与其他钯-锌金属间化合物形式相比，PdZn表现出最佳的催化性能。
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