摘要
以MMT为载体,采用原位聚合-配位沉积法制备3种不同Co负载量的Co_(3)O_(4)-MMT催化剂。采用N 2物理吸附、XRD和TEM对载体和催化剂进行表征,并在连续流动微反装置上考察其N_(2)O催化分解性能。结果表明,与Co_(3)O_(4)催化剂相比,Co_(3)O_(4)-MMT催化剂的比表面积显著增大,且活性组分Co_(3)O_(4)具有较高的分散状态。Co_(3)O_(4)-MMT催化剂的催化活性随着Co含量的增加先升后降,其中0.015Co-MMT表现出最佳的催化活性,其活性远高于Co_(3)O_(4)催化剂,同时,该催化剂还表现出良好的催化稳定性和较好的杂质气体耐受性。
Co_(3)O_(4)-MMT catalysts with three different Co loadings were prepared by in situ polymerization-coordination deposition using MMT as support.The support and catalysts were characterized by N 2-physisorption,XRD and TEM techniques.Their catalytic performance for N_(2)O decomposition was investigated using a continuous flow microreactor.The results show that the specific surface area of Co_(3)O_(4)-MMT increased significantly and the active component Co_(3)O_(4)possesses a higher dispersion state comparing with pure Co_(3)O_(4)catalyst.The catalytic activities of Co_(3)O_(4)-MMT catalysts increase firstly and then decrease with the increase of Co content.0.015Co-MMT shows the best catalytic activity and its specific activity is much higher than that of pure Co_(3)O_(4)catalyst.Meanwhile,the 0.015Co-MMT catalyst exhibits good catalytic stability and tolerance to impurity gases.
作者
武瑞芳
杨伟伟
蔺向前
蔺向光
王茜
李林茂
王永钊
Wu Ruifang;Yang Weiwei;Lin Xiangqian;Lin Xiangguang;Wang Qian;Li Linmao;Wang Yongzhao(Engineering Research Center of Ministry of Education for Fine Chemicals,School of Chemistry and Chemical Engineering,Shanxi University,Taiyuan 030006,Shanxi,China;Shanxi Dongjin Fertilizer Co.,Ltd.,Lüliang 030500,Shanxi,China)
出处
《工业催化》
CAS
2023年第10期95-100,共6页
Industrial Catalysis
基金
国家自然科学基金资助项目(U1710221)
山西省自然科学基金(201801D121043)。
