共搜索到6982条信息，每页显示10条信息，共699页。用时：0小时0分0秒328毫秒
Conductivity of cerium oxides doped by trivalent cations ZHANG Hong(张鸿), WANG Jian (汪健), WANG Shen-cun(王申存), LI Zhi-cheng(李志成) School of Materials Science and Engineering, Central South... have pure single fluorite-type phase in all doped cerium oxides. Impedance measurement results show that the conductivities and activation energies of CeO2-based oxides depend closely on the dopants......
Catalytic performance of cerium iron complex oxides for partial oxidation of methane to synthesis gas LIU Mingchun1,LI Kongzhai1,WEI Yonggang1,WANG Hua1 (1.Faculty of Materials and Metallurgy Engineering,Kunming University of Science and Technology,Kunming 650093,China) Abstract:The cerium iron complex oxides oxygen carder was prepared by the co-precipitation method. The reactions between......
Trans. Nonferrous Met. Soc. China 22(2012) 2007-2013 Direct electrochemical preparation of CeCo5 alloy from mixed oxides DAI Lei1,2, WANG Shuo1, LI Yue-hua1, WANG Ling1, SHAO Guang-jie2 1. College...; accepted 4 May 2012 Abstract: CeCo5 alloy was prepared from the mixture of cobalt oxide (Co3O4) and cerium oxide (CeO2) powders by electro-deoxidation in molten calcium chloride. The effects......
-hexaaluminate is a promising high temperature methane combustion catalyst with high activity and good stability. Key words:La-hexaaluminate; methane combustion; cerium oxides; rare earths; [全文内容正在... as the precipitation agent. The La-hexaaluminate can be formed at low temperatures ranging from 1050 to 1200 ℃. The cerium introduction plays a great role in the methane catalytic combustion on La-Mn hexaaluminate......
J. Cent. South Univ. Technol. (2008) 15: 796-800 DOI: 10.1007/s11771-008-0147-z Synthesis of mesoporous cerium-zirconium mixed oxides by hydrothermal templating method WANG Man-juan(王曼娟)1, GU...; Abstract: Mesoporous cerium-zirconium mixed oxides were prepared by hydrothermal method using cetyl trimethyl ammonium bromide (CTAB......
has a chemical formula of CeO2·nH2O(n < 2) and a cubic fluorite-type structure after high temperature treatment.Adsorption capacity of different temperature treated hydrous cerium oxides does... on the structure of a hydrous cerium oxides,and no signs of CePO4 precipitates are found.The ion-exchanging structure of hydrous cerium oxide plays a fundamental role in phosphate adsorption.The structure......
="ChDivSummary">Pure and Zr, La or Pr-doped cerium oxides were characterised by transmission electron microscopy (TEM), N2 adsorption-desorption at -196 oC and X-ray diffraction (XRD). For crystal sizes... the strain contribution to line broadening. The miscalculation of crystal size by using the Scherrer equation affected both pure and doped cerium oxides, but the size underestimation became more......
="ChDivSummary">Pure and Zr, La or Pr-doped cerium oxides were characterised by transmission electron microscopy (TEM), N2 adsorption-desorption at -196 oC and X-ray diffraction (XRD). For crystal sizes... the strain contribution to line broadening. The miscalculation of crystal size by using the Scherrer equation affected both pure and doped cerium oxides, but the size underestimation became more......
Preparation and characterization of Ce1-xFexO2 complex oxides and its catalytic activity for methane selective oxidation LIU Mingchun1,LI Kongzhai1,WEI Yonggang1,WANG Hua1 (1.Faculty of Materials... using the coprecipitation method. The catalysts were characterized by means of XRD and H2-TPR. The reactions between methane and lattice oxygen from the complex oxides were investigated......
Numerical simulation of preparation of ultrafine cerium oxides using jet-flow pyrolysisChao Lv1,2,Ting-An Zhang1,Zhi-He Dou1,Qiu-Yue Zhao11. Key Laboratory of Ecological Metallurgy of Multi-metal... efficiency and severe environmental pollution.Our team has independently developed a jet pyrolysis reactor for the preparation of ultrafine cerium oxides,and this process has theoretical significance......
