Role of surface defects of carbon nanotubes on catalytic performance of barium promoted ruthenium catalyst for ammonia synthesis

查看全文 作　　者：Yongcheng [1]Ma;Guojun [1]Lan;Wenzhao [2]Fu;Ying [1]Lai;Wenfeng [1]Han;Haodong [1]Tang;Huazhang [1]Liu;Ying [1]Li

机构地区：[1]Institute of Industrial Catalysis,Zhejiang University of Technology,Chaowang Road 18,Hangzhou 310014,Zhejiang,China;[2]State Key Laboratory of Chemical Engineering,East China University of Science and Technology,130 Meilong Road,Shanghai 200237,China

出　　处：《Journal of Energy Chemistry》索引2020年第29卷第2期,共8页

基　　金：The financial support from Natural Science Foundation of Zhejiang Province(LY17B030010)。 摘　　要：Carbon nanotubes(CNTs) with abundant surface defects are prepared by a liquid oxidation and thermal annealing method. The defective CNTs-D supported Ba–Ru/CNTs-D catalysts exhibit superior catalytic performance in ammonia synthesis with a TOF be increased up to 0.30 s-1, which is 2.5 times of oxidized CNTs-O supported Ba–Ru/CNTs-O catalysts and 5 times of the Ba–Ru/CNTs. The characterizations by CO chemisorption, transmission electron microscope, Raman, and X-ray photoelectron spectroscopy revealed that the uniformly well dispersed Ru NPs can be stabilized on the defective sites of CNTs-D. The great improvement of the catalytic performance and stability of the Ba–Ru/CNTs-D is contributed to the strong interaction between Ru NPs and surface defect of the CNTs. 关键词：CARBON NANOTUBES RUTHENIUM catalyst DEFECTIVE CARBON AMMONIA synthesis

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Role of surface defects of carbon nanotubes on catalytic performance of barium promoted ruthenium catalyst for ammonia synthesis

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