Reaction Mechanism of NO Reduction by CH4over Rare Earth Oxides in Oxidizing Atmosphere

1996 ◽  
Vol 69 (11) ◽  
pp. 3367-3373 ◽  
Author(s):  
Kiyoshi Otsuka ◽  
Qinghong Zhang ◽  
Ichiro Yamanaka ◽  
Hiromi Tono ◽  
Masaharu Hatano ◽  
...  
Keyword(s):  
Rare Earth ◽  
Reaction Mechanism ◽  
No Reduction ◽  
Rare Earth Oxides ◽  
Oxidizing Atmosphere

scholarly journals NO reduction activity of Pd catalyst modified with rare earth oxides.

1986 ◽  
pp. 130-137 ◽  
Author(s):  
Hideaki MURAKI ◽  
Masayuki FUKUI ◽  
Kohji YOKOTA ◽  
Yoshiyasu FUJITANI
Keyword(s):  
Rare Earth ◽  
No Reduction ◽  
Rare Earth Oxides ◽  
Pd Catalyst ◽  
Reduction Activity

NO reduction by CH4 over rare earth oxides

1996 ◽  
Vol 27 (1-2) ◽  
pp. 41-47 ◽  
Author(s):  
Xiankuan Zhang ◽  
Arden B. Walters ◽  
M.Albert Vannice
Keyword(s):  
Rare Earth ◽  
No Reduction ◽  
Rare Earth Oxides

Effect of Rare Earth Oxides on Electrical Properties of Spark Plasma Sintered AlN Ceramics

2015 ◽  
Vol 30 (3) ◽  
pp. 267
Author(s):  
HUANG Lin-Yun ◽  
LI Chen-Hui ◽  
KE Wen-Ming ◽  
SHI Yu-Sheng ◽  
HE Zhi-Yong ◽  
...  
Keyword(s):  
Rare Earth ◽  
Electrical Properties ◽  
Rare Earth Oxides ◽  
Spark Plasma

A glance on rare earth oxides: importance, reserves, demand, applications, critical uncertainties, global economy, and zeta potential characterization

2020 ◽  
Vol 05 ◽  
Author(s):  
Silas Santos ◽  
Orlando Rodrigues ◽  
Letícia Campos
Keyword(s):  
Rare Earth ◽  
Zeta Potential ◽  
Sample Preparation ◽  
Rare Earths ◽  
Smart Materials ◽  
Global Economy ◽  
Materials Science ◽  
Functional Materials ◽  
Rare Earth Oxides ◽  
Interparticle Forces

Background: Innovation mission in materials science requires new approaches to form functional materials, wherein the concept of its formation begins in nano/micro scale. Rare earth oxides with general form (RE2O3; RE from La to Lu, including Sc and Y) exhibit particular proprieties, being used in a vast field of applications with high technological content since agriculture to astronomy. Despite of their applicability, there is a lack of studies on surface chemistry of rare earth oxides. Zeta potential determination provides key parameters to form smart materials by controlling interparticle forces, as well as their evolution during processing. This paper reports a study on zeta potential with emphasis for rare earth oxide nanoparticles. A brief overview on rare earths, as well as zeta potential, including sample preparation, measurement parameters, and the most common mistakes during this evaluation are reported. Methods: A brief overview on rare earths, including zeta potential, and interparticle forces are presented. A practical study on zeta potential of rare earth oxides - RE2O3 (RE as Y, Dy, Tm, Eu, and Ce) in aqueous media is reported. Moreover, sample preparation, measurement parameters, and common mistakes during this evaluation are discussed. Results: Potential zeta values depend on particle characteristics such as size, shape, density, and surface area. Besides, preparation of samples which involves electrolyte concentration and time for homogenization of suspensions are extremely valuable to get suitable results. Conclusion: Zeta potential evaluation provides key parameters to produce smart materials seeing that interparticle forces can be controlled. Even though zeta potential characterization is mature, investigations on rare earth oxides are very scarce. Therefore, this innovative paper is a valuable contribution on this field.

Sign in / Sign up

Export Citation Format

Share Document