scholarly journals Effect of Temperature and Atmosphere on Phase Stability and Morphology of LiMn2O4 Powder Synthesized by Citric Acid Gel Process.

2000 ◽  
Vol 108 (1257) ◽  
pp. 462-468 ◽  
Author(s):  
Yi-Ming HON ◽  
Kuan-Zong FUNG ◽  
Min-Hsiung HON
Keyword(s):  
Citric Acid ◽  
Phase Stability ◽  
Effect Of Temperature ◽  
Acid Gel

scholarly journals Effect of Temperature and pH on Phase Transformations in Citric Acid Mediated Hydrothermal Growth of Tungsten Oxide

2018 ◽  
Vol 2018 (7) ◽  
pp. 917-923 ◽  
Author(s):  
Kasper Wenderich ◽  
Johannes Noack ◽  
Anne Kärgel ◽  
Annette Trunschke ◽  
Guido Mul
Keyword(s):  
Citric Acid ◽  
Phase Transformations ◽  
Tungsten Oxide ◽  
Hydrothermal Growth ◽  
Effect Of Temperature

scholarly journals ACTIVE REFLECTORS FOR INTERFEROMETRIC SAR DEFORMATION MEASUREMENT

2021 ◽  
Vol XLIII-B3-2021 ◽  
pp. 177-182
Author(s):  
Y. Wassie ◽  
M. Crosetto ◽  
G. Luzi ◽  
O. Monserrat ◽  
A. Barra ◽  
...  
Keyword(s):  
Phase Stability ◽  
Calibration Curve ◽  
Strong Correlation ◽  
Deformation Monitoring ◽  
Radar Interferometry ◽  
Synthetic Aperture ◽  
Effect Of Temperature ◽  
Synthetic Aperture Radar Interferometry ◽  
Interferometric Sar ◽  
Active Reflector

Abstract. This paper is focused on the design, implementation and testing of an active reflector, to be used to support deformation monitoring studies based on Synthetic Aperture Radar interferometry. The device is designed to work in C-band with Sentinel-1 data, operating at 5.405 GHz ± 50 MHz. A brief description of the active reflector is provided. It consists of two antennas and an amplifying section. The active reflector has been tested in different experiments. In this paper, we describe the experiment carried out in the Parc Mediterrani de la Tecnologia (Castelldefels, Barcelona). The result shows a strong correlation with temperature. A calibration test was carried out to experimentally derive a calibration curve to correct the effect of temperature on phase stability.

scholarly journals Preparation of ReFeO3 nanocrystalline powders by auto-combustion of citric acid gel

2009 ◽  
Vol 4 (5) ◽  
pp. 518-521 ◽  
Author(s):  
Anhua Wu ◽  
Guofeng Cheng ◽  
Hui Shen ◽  
Jiayue Xu ◽  
Yaoqing Chu ◽  
...  
Keyword(s):  
Citric Acid ◽  
Nanocrystalline Powders ◽  
Auto Combustion ◽  
Acid Gel

scholarly journals Electrochemical Properties of LiMn2O4 Nano-Particles Synthesized by Citric Acid Gel Process.

2001 ◽  
Vol 109 (1276) ◽  
pp. 986-991 ◽  
Author(s):  
Yi-Ming HON ◽  
Kuan-Zong FUNG ◽  
Shih-Pin LIN ◽  
Min-Hsiung HON
Keyword(s):  
Citric Acid ◽  
Electrochemical Properties ◽  
Nano Particles ◽  
Acid Gel

Effect of temperature on the solubility and solid phase stability of zirconium hydroxide

2013 ◽  
Vol 101 (10) ◽  
pp. 645-651 ◽  
Author(s):  
T. Kobayashi ◽  
D. Bach ◽  
M. Altmaier ◽  
T. Sasaki ◽  
H. Moriyama
Keyword(s):  
Phase Stability ◽  
Room Temperature ◽  
Solubility Product ◽  
Elevated Temperatures ◽  
Solid Phase ◽  
Zirconium Hydroxide ◽  
Effect Of Temperature ◽  
Crystalline Oxide ◽  
Ph Range ◽  
Colloidal Species

Summary The solubility and solid phase stability of zirconium hydroxide was investigated in the acidic pH range after heating the aqueous samples at 50, 70 and 90 ◦C. The solubility measured at room temperature after exposing the batch samples to elevated temperatures for a given period of time significantly decreased with increasing heating periods. The Zr concentrations at given pH after heating at 90 ◦C for 3 weeks are about 5 orders of magnitude lower than the solubility of amorphous zirconium hydroxide (Zr(OH)4(am)) kept at room temperature. Size distributions of the Zr colloidal species after heating were investigated by sequential filtration using different pore-sized membranes, and the contribution of the colloidal species to the solubility was assessed. The TEM images and XRD spectra of the solid phases after heating indicated the agglomeration and crystallization of the initial amorphous hydroxide solid phase. The solid phase was identified as crystalline oxide after heating at 90◦C. The solubility product determined from the solubility data excluding contributions of colloidal species is correlated to the particle size of the solid phase.

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