Design of Co3O4/CeO2–Co3O4 hierarchical binary oxides for the catalytic oxidation of dibromomethane

2019 ◽  
Vol 73 ◽  
pp. 134-141 ◽  
Author(s):  
Jian Mei ◽  
Jiangkun Xie ◽  
Yaning Sun ◽  
Zan Qu ◽  
Naiqiang Yan
Keyword(s):  
Catalytic Oxidation ◽  
Binary Oxides

Superior performance of Cu-Ce binary oxides for toluene catalytic oxidation: Cu-Ce synergistic effect and reaction pathways

Fuel ◽  
2021 ◽  
Vol 306 ◽  
pp. 121654
Author(s):  
Binghong Song ◽  
Caiting Li ◽  
Xueyu Du ◽  
Shanhong Li ◽  
Yindi Zhang ◽  
...  
Keyword(s):  
Synergistic Effect ◽  
Catalytic Oxidation ◽  
Superior Performance ◽  
Reaction Pathways ◽  
Binary Oxides

Phase identification in SiC whisker reinforced Al2O3-R2O3-based composites

1992 ◽  
Vol 50 (1) ◽  
pp. 152-153
Author(s):  
C.M. Sung ◽  
K.J. Ostreicher ◽  
M.L. Huckabee ◽  
S.T. Buljan
Keyword(s):  
Analytical Electron Microscopy ◽  
Phase Identification ◽  
Reinforced Composites ◽  
Ion Milling ◽  
X Ray ◽  
Binary Oxides ◽  
Analytical Electron ◽  
The Matrix ◽  
Second Phases ◽  
Convergent Beam

A series of binary oxides and SiC whisker reinforced composites both having a matrix composed of an α-(Al, R)2O3 solid solution (R: rare earth) have been studied by analytical electron microscopy (AEM). The mechanical properties of the composites as well as crystal structure, composition, and defects of both second phases and the matrix were investigated. The formation of various second phases, e.g. garnet, β-Alumina, or perovskite structures in the binary Al2O3-R2O3 and the ternary Al2O3-R2O3-SiC(w) systems are discussed.Sections of the materials having thicknesses of 100 μm - 300 μm were first diamond core drilled. The discs were then polished and dimpled. The final step was ion milling with Ar+ until breakthrough occurred. Samples prepared in this manner were then analyzed using the Philips EM400T AEM. The low-Z energy dispersive X-ray spectroscopy (EDXS) data were obtained and correlated with convergent beam electron diffraction (CBED) patterns to identify phase compositions and structures. The following EDXS parameters were maintained in the analyzed areas: accelerating voltage of 120 keV, sample tilt of 12° and 20% dead time.

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