caa a22 4500 463251709 CHVBK 20180405153342.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s10562-007-9105-x doi (NATIONALLICENCE)springer-10.1007/s10562-007-9105-x Phase transformation in CeO2-Co3O4 binary oxide under reduction and calcination pretreatments [Elektronische Daten] [Chih-Wei Tang, Wen-Yueh Yu, Chin-Jung Lin, Chen-Bin Wang, Shu-Hua Chien] The CeO2-Co3O4 binary oxide was prepared by impregnation of the high surface area Co3O4 support (S.A.=100m2 g−1) with cerium nitrate (20wt% cerium loading on Co3O4). Pretreatment of CeO2-Co3O4 binary oxide was divided both methods: reduction (under 200 and 400°C, assigned as CeO2-Co3O4-R200 and CeO2-Co3O4-R400 and calcination (under 350 and 550°C, assigned as CeO2-Co3O4-C350 and CeO2-Co3O4-C550). The binary oxides were investigated by means of X-ray diffraction (XRD), nitrogen adsorption at −196°C, infrared (IR), transmission electron microscopy (TEM), diffuse reflectance spectroscopy (DRS) and temperature programmed reduction (TPR). The results showed that the binary oxides pretreatment under low-temperatures possessed larger surface area. The cobalt phase of binary oxides also was transferred upon the treating temperature, i.e., the CeO2-Co3O4-R200 binary oxide exhibited higher surface area (S.A.=109m2 g−1) and the main phase was CeO2,Co3O4 and CoO. While, the CeO2-Co3O4-R400 binary oxide exhibited lower surface area (S.A.=40m2 g−1) and the main phase was CeO2, CoO and Co. Apparently, the optimized pretreatment of CeO2-Co3O4 binary oxide can control both the phases and surface area. Springer Science+Business Media, LLC, 2007 CeO2-Co3O4 binary oxide nationallicence phase transformation nationallicence X-ray diffraction nationallicence Tang Chih-Wei Department of Applied Chemistry and Materials Science, Chung Cheng Institute of Technology, National Defense University, 33509, Tahsi, Taoyuan, Taiwan, ROC aut Yu Wen-Yueh Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan, ROC aut Lin Chin-Jung Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan, ROC aut Wang Chen-Bin Department of Applied Chemistry and Materials Science, Chung Cheng Institute of Technology, National Defense University, 33509, Tahsi, Taoyuan, Taiwan, ROC aut Chien Shu-Hua Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan, ROC aut Catalysis Letters Springer US; http://www.springer-ny.com 116/3-4(2007-08-01), 161-166 1011-372X 116:3-4<161 2007 116 10562 https://doi.org/10.1007/s10562-007-9105-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10562-007-9105-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Tang Chih-Wei Department of Applied Chemistry and Materials Science, Chung Cheng Institute of Technology, National Defense University, 33509, Tahsi, Taoyuan, Taiwan, ROC aut NATIONALLICENCE 700 1- Yu Wen-Yueh Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Lin Chin-Jung Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan, ROC aut NATIONALLICENCE 700 1- Wang Chen-Bin Department of Applied Chemistry and Materials Science, Chung Cheng Institute of Technology, National Defense University, 33509, Tahsi, Taoyuan, Taiwan, ROC aut NATIONALLICENCE 700 1- Chien Shu-Hua Institute of Chemistry, Academia Sinica, 11529, Taipei, Taiwan, ROC aut NATIONALLICENCE 773 0- Catalysis Letters Springer US; http://www.springer-ny.com 116/3-4(2007-08-01), 161-166 1011-372X 116:3-4<161 2007 116 10562 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer