Coexistence of domains: binary oxides: TiO2

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.

Download Full-text

Core-shell nanostructure α-Fe2O3/SnO2 binary oxides for the catalytic oxidation and adsorption of elemental mercury from flue gas

Journal of Environmental Chemical Engineering ◽

10.1016/j.jece.2021.105137 ◽

2021 ◽

Vol 9 (2) ◽

pp. 105137

Author(s):

Yongpeng Ma ◽

Tengfei Xu ◽

Ling Li ◽

Jiandong Wang ◽

Yu Li ◽

...

Keyword(s):

Catalytic Oxidation ◽

Flue Gas ◽

Elemental Mercury ◽

Core Shell ◽

Binary Oxides

Download Full-text

Effect of different support on activity of Mn-Ce binary oxides catalysts for toluene combustion

Journal of Rare Earths ◽

10.1016/j.jre.2021.02.004 ◽

2021 ◽

Author(s):

Lei Li ◽

Liping Song ◽

Zhaoyang Fei ◽

Wei Chu ◽

Xiaofeng Luo ◽

...

Keyword(s):

Binary Oxides

Download Full-text

ChemInform Abstract: CATALYTIC PROPERTIES OF OXYGEN ADSORBED ON NICKEL(II) OXIDE-SAMARIUM(III) OXIDE BINARY OXIDES

Chemischer Informationsdienst ◽

10.1002/chin.197816034 ◽

1978 ◽

Vol 9 (16) ◽

Author(s):

Y. TAKASU ◽

H. NIWA ◽

Y. MATSUDA

Keyword(s):

Catalytic Properties ◽

Binary Oxides

Download Full-text

Adsorption kinetic properties of As(III) on synthetic nano Fe-Mn binary oxides

Journal of Earth Science ◽

10.1007/s12583-016-0714-4 ◽

2016 ◽

Vol 27 (4) ◽

pp. 699-706

Author(s):

Mei Yu ◽

Yanxin Wang ◽

Shuqiong Kong ◽

Evalde Mulindankaka ◽

Yuan Fang ◽

...

Keyword(s):

Adsorption Kinetic ◽

Kinetic Properties ◽

Binary Oxides

Download Full-text

First-Principle Calculation on Misfit Layered Cobaltite and La-Doped Series

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.652-654.554 ◽

2013 ◽

Vol 652-654 ◽

pp. 554-558

Author(s):

Xin Min Min ◽

Xuchao Wang

Keyword(s):

Thermoelectric Property ◽

Variation Method ◽

First Principle ◽

Direct Relation ◽

Discrete Variation ◽

Principle Calculation ◽

First Principle Calculation ◽

Binary Oxides ◽

La Doped ◽

Layered Cobaltite

The relations between electronic structure and thermoelectric property of misfit layered cobaltite of Ca3Co4O9 and La-doped series are studied from the calculation by density function and discrete variation method (DFT-DVM). The highest valence band (HVB) and the lowest conduction band (LCB) near Fermi level are only mainly from O 2p and Co 3d in Ca2CoO3 layer. Therefore, the semiconductor, or thermoelectric property of Ca3Co4O9 should be mainly from Ca2CoO3 layer, but have no direct relation to the CoO2 layer, which is consistent with that binary oxides hardly have thermoelectric property, but trinary oxide compounds have quite good thermoelectric property. With the amount of La-doped increase, the gap between HVB and LCB firstly decrease, then reaches the minimum, finally increase. The gap affects the thermoelectric property. Therefore, there is a best amount of Na-doped to improve thermoelectric property, which is consistent with the experiment.

Download Full-text