caa a22 4500 463252004 CHVBK 20180405153342.0 cr unu---uuuuu 170326e20071201xx s 000 0 eng 10.1007/s10562-007-9228-0 doi (NATIONALLICENCE)springer-10.1007/s10562-007-9228-0 Role of Surface Area in Oxygen Storage Capacity of Ceria-Zirconia as Soot Combustion Catalyst [Elektronische Daten] [Qing Liang, Xiaodong Wu, Xiaodi Wu, Duan Weng] Two thermal stable phases, Ce0.75Zr0.25O2 and Ce0.16Zr0.84O2, with different surface area were prepared by coprecipitation. The oxygen storage capacity (OSC) measurements were carried out at 500°C under both transient (CO-O2 cycle at 0.05, 0.1 and 0.25Hz) and stationary reaction conditions (CO pulse). In the oxygen storage/release process, the rate-determine step is surface reactions when the specific surface area is lower than 60m2/g. When the surface area increases further, the influence of surface area is less important. The increased surface area favors diesel soot catalytic combustion via providing more redox sites to activate adsorbed oxygen. Nevertheless, this effect is less important when the specific surface area is larger than 40m2/g, especially under loose contact condition. Springer Science+Business Media, LLC, 2007 CeO2-ZrO2 nationallicence Specific surface area nationallicence OSC nationallicence Soot catalytic oxidation nationallicence Liang Qing Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Wu Xiaodong Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Wu Xiaodi Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Weng Duan Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut Catalysis Letters Springer US; http://www.springer-ny.com 119/3-4(2007-12-01), 265-270 1011-372X 119:3-4<265 2007 119 10562 https://doi.org/10.1007/s10562-007-9228-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9228-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liang Qing Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Wu Xiaodong Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Wu Xiaodi Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 700 1- Weng Duan Laboratory of Advanced Materials, Department of Materials Science and Engineering, Tsinghua University, 100084, Beijing, China aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 119/3-4(2007-12-01), 265-270 1011-372X 119:3-4<265 2007 119 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer