caa a22 4500 463253582 CHVBK 20180405153347.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10562-007-9140-7 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9140-7 Studies on coke formation and coke species of nickel-based catalysts in CO2 reforming of CH4 [Elektronische Daten] [Li Xiancai, Li Shuigen, Yang Yifeng, Wu Min, He Fei] Three nickel-based catalyst systems, Ni/γ-Al2O3, Ni/BaTiO3, and Ni-0.75wt%La-BaTiO3, were investigated for the CO2 reforming of CH4. The temperature of CH4 decomposition on catalyst Ni/γ-Al2O3 is the lowest and the relative content of H2 is the highest; but the temperature of CH4 decomposition on catalyst Ni-0.75 wt%La-BaTiO3 is the highest and the relative content of H2 is the lowest. The amount of carbon deposition via CH4 decomposition decreases with the increase of rare earth La and the temperature of decomposition also declines gradually. Different active coke species were formed on different catalysts. The higher activity of coke species is, the easier the reaction with activated CO2 is. The coke species were investigated by the XPS technique. Several surface coke species existed on catalysts after the reaction. The surface species with the binding energy near 282 and 286ev are the main coke species. These species resulted in the catalyst deactivation. By analyzing the coke on catalyst, it was found the catalyst Ni-0.75wt% La-BaTiO3 suppressed the formation of coke species whose binding energy is near 282 and 286ev. Springer Science+Business Media, LLC, 2007 rare earths nationallicence impregnation nationallicence sol-gel nationallicence catalysts nationallicence XPS nationallicence Xiancai Li Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut Shuigen Li Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut Yifeng Yang Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut Min Wu Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut Fei He State Key Laboratory. of C1 Chemistry and Technology, Tianjin University, 300072, Tianjin, China aut Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 59-63 1011-372X 118:1-2<59 2007 118 10562 https://doi.org/10.1007/s10562-007-9140-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9140-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Xiancai Li Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut NATIONALLICENCE 700 1- Shuigen Li Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut NATIONALLICENCE 700 1- Yifeng Yang Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut NATIONALLICENCE 700 1- Min Wu Department of Chemistry, Nanchang University, 330031, Nanchang, Jiangxi, China aut NATIONALLICENCE 700 1- Fei He State Key Laboratory. of C1 Chemistry and Technology, Tianjin University, 300072, Tianjin, China aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 118/1-2(2007-10-01), 59-63 1011-372X 118:1-2<59 2007 118 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer