caa a22 4500 463253132 CHVBK 20180405153346.0 cr unu---uuuuu 170326e20070501xx s 000 0 eng 10.1007/s10562-007-9068-y doi (NATIONALLICENCE)springer-10.1007/s10562-007-9068-y Influence of oxidation on heat-treated activated carbon support properties and metallic dispersion of Ru/C catalyst [Elektronische Daten] [Hong Zhu, Wenfeng Han, Huazhang Liu] Heat-treated activated carbon has been oxidized to improve the properties related to the use as a support for the preparation of 5wt% Ru/C catalysts by impregnation. The pore structure, surface oxygen groups of the heat-treated activated carbon before and after oxidation in the gas and liquid phase, as well as catalytic activities and dispersion of Ru in the catalysts were investigated systematically. The pore structures of the samples were characterized by N2 physisorption. Temperature-programmed desorption (TPD) was conducted to determine the chemical properties of the samples. Ru dispersion was measured by CO pulse chemisorption. The effects of oxidation treatments on carbon surface chemistry and pore structure which are closely related to Ru dispersion and catalytic activity, was examined. Furthermore, the modified heat-treated activated carbon support obtained by gas phase oxidation in CO2 and liquid phase oxidation in nitric acid was more suitable to prepare Ru-based catalysts for ammonia synthesis than that without treatment. Springer Science+Business Media, LLC, 2007 ammonia synthesis nationallicence Ru dispersion nationallicence surface oxygen groups nationallicence heat-treated activated carbon nationallicence Zhu Hong Institute of Catalysis of Zhejiang University of Technology, State Key Laboratory of Green-chemistry Synthesis Technology, 310014, Hang Zhou, P R China aut Han Wenfeng Institute of Catalysis of Zhejiang University of Technology, State Key Laboratory of Green-chemistry Synthesis Technology, 310014, Hang Zhou, P R China aut Liu Huazhang Institute of Catalysis of Zhejiang University of Technology, State Key Laboratory of Green-chemistry Synthesis Technology, 310014, Hang Zhou, P R China aut Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 115/1-2(2007-05-01), 13-18 1011-372X 115:1-2<13 2007 115 10562 https://doi.org/10.1007/s10562-007-9068-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9068-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Zhu Hong Institute of Catalysis of Zhejiang University of Technology, State Key Laboratory of Green-chemistry Synthesis Technology, 310014, Hang Zhou, P R China aut NATIONALLICENCE 700 1- Han Wenfeng Institute of Catalysis of Zhejiang University of Technology, State Key Laboratory of Green-chemistry Synthesis Technology, 310014, Hang Zhou, P R China aut NATIONALLICENCE 700 1- Liu Huazhang Institute of Catalysis of Zhejiang University of Technology, State Key Laboratory of Green-chemistry Synthesis Technology, 310014, Hang Zhou, P R China aut NATIONALLICENCE 773 0- Catalysis Letters Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 115/1-2(2007-05-01), 13-18 1011-372X 115:1-2<13 2007 115 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer