Ni-MOF-74对脉冲等离子体催化合成氨的影响  

Effect of Ni-MOF-74 on pulsed plasma-catalytic ammonia synthesis

作　　者：宋勤龙 徐晓芳 张海宝[1] SONG Qinlong;XU Xiaofang;ZHANG Haibao(Laboratory of Plasma Physics and Materials,Beijing Institute of Printing,Beijing 102600,China)

机构地区：[1]北京印刷学院等离子体物理与材料实验室,北京102600

出　　处：《应用化工》2025年第2期393-397,共5页Applied Chemical Industry

基　　金：国家自然科学基金面上项目(12475254);北京市自然科学基金资助(1242015)。

摘　　要：金属有机框架化合物的制备和结构对其催化性能至关重要。采用溶剂热法以不同镍源合成了两种Ni-MOF-74,并利用X射线衍射(XRD),傅里叶红外光谱(FTIR),扫描电子显微镜(SEM),以及同步热分析仪(TG-DSC)对两种Ni-MOF-74进行表征,研究了不同镍源对其结构、形貌以及在等离子体合成氨反应中的催化效果的影响。结果表明,以六水合硝酸镍合成的Y-Ni-MOF-74颗粒更细,热稳定性更好,催化性能更优。仅等离子体合成氨的合成速率为1065μmol/g·h,转化率为0.2%。填充Y-Ni-MOF-74后,氨合成速率可高达22785μmol/g·h,氮气转化率为0.85%,与仅等离子体相比,氨合成速率提高了21.39倍,氮气转化率提高了4.25倍。The preparation and structure of metal-organic framework compounds are crucial for their catalytic properties.Two kinds of Ni-MOF-74 were synthesized by solvothermal method with different nickel sources,and characterized by X-ray diffraction(XRD),Fourier transform infrared spectroscopy(FTIR),scanning electron microscopy(SEM),and synchrotron-generated thermal analyzer(TG-DSC),to study the effects of different nickel sources on the structure,morphology,and catalytic in plasma ammonia synthesis,effect in the plasma ammonia synthesis reaction.The results show that Y-Ni-MOF-74 synthesized with nickel nitrate hexahydrate has finer particles,better thermal stability and better catalytic performance.The plasma-only ammonia synthesis rate was 1065μmol/g·h,and the conversion rate was 0.2%.After filling Y-Ni-MOF-74,the ammonia synthesis rate can be as high as 22785μmol/g·h,and the nitrogen conversion rate is 0.85%,which is 21.39 times higher than that of the plasma only,and the ammonia synthesis rate and nitrogen conversion rate are 4.25 times higher than that of the plasma only.

关 键 词：金属有机框架化合物 Ni-MOF-74 溶剂热法 催化合成氨 等离子体 

分 类 号：TQ032.4[化学工程]