Thermal decomposition analysis of Co2+ content alginic acid cross-linked structure for the synthesis of cobalt oxides

2021 ◽  
Vol 29 ◽  
pp. 102879
Author(s):  
Lingyu Liu ◽  
Zihua Wang ◽  
Xue Zhong Wang
Keyword(s):  
Thermal Decomposition ◽  
Alginic Acid ◽  
Decomposition Analysis ◽  
Cobalt Oxides

Kinetic study of anti-HIV drugs by thermal decomposition analysis

2016 ◽  
Vol 127 (1) ◽  
pp. 577-585 ◽  
Author(s):  
B. D. L. Ferreira ◽  
B. C. R. Araujo ◽  
R. C. O. Sebastião ◽  
M. I. Yoshida ◽  
W. N. Mussel ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Kinetic Study ◽  
Decomposition Analysis ◽  
Hiv Drugs ◽  
Anti Hiv

scholarly journals Analysis of Thermal Decomposition of Solid Rocket Propellants

2019 ◽  
Vol 10 (2) ◽  
pp. 43-54 ◽  
Author(s):  
Marcin CEGŁA ◽  
Janusz ZMYWACZYK ◽  
Piotr KONIORCZYK
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Energetic Materials ◽  
Decomposition Analysis ◽  
Simultaneous Thermal Analysis ◽  
Analytical Techniques ◽  
Heating Rates ◽  
Rocket Propellants ◽  
Solid Rocket ◽  
Solid Rocket Propellants

The paper presents results of thermal decomposition analysis of selected solid rocket propellants. Homogeneous propellant PAC and heterogeneous propellant H2 were subjected to simultaneous thermal analysis with the use of NETZSCH STA 2500 Regulus device with five heating rates of 2.5, 5, 7.5, 10 and 15 K/min. The method combines TG, DTG and DTA analytical techniques in a single measurement. The aim of the conducted experiments was to study thermal decomposition of these energetic materials as well as to determine activation energy of the decomposition process and the preconditioning factor from the TG curves. The tested materials properties and chemical composition along with a brief description of the experimental procedure are described. The inverse procedure of calculating the activation energy, based on the Ozawa-Flynn-Wall model is described. Finally, the results of thermal decomposition of two tested solid rocket propellants are presented along with maximum decomposition rates and percentage of mass loss.

scholarly journals Thermal decomposition analysis of simulated high-level liquid waste in cold-cap

2016 ◽  
Vol 2 ◽  
pp. 44 ◽  
Author(s):  
Kota Kawai ◽  
Tatsuya Fukuda ◽  
Yoshio Nakano ◽  
Kenji Takeshita
Keyword(s):  
Thermal Decomposition ◽  
Liquid Waste ◽  
Decomposition Analysis ◽  
High Level Liquid Waste ◽  
High Level

scholarly journals Thermal decomposition analysis in a sphere of combustible materials

2017 ◽  
Vol 9 (2) ◽  
pp. 168781401769251 ◽  
Author(s):  
Ramoshweu Solomon Lebelo ◽  
Oluwole Daniel Makinde ◽  
T Chinyoka
Keyword(s):  
Thermal Decomposition ◽  
Chemical Reaction ◽  
Spontaneous Combustion ◽  
Decomposition Analysis ◽  
Combustible Material ◽  
Balance Equations ◽  
One Dimensional ◽  
Spherical Domain ◽  
Exothermic Chemical Reaction ◽  
Implicit Finite Difference

In this article, we look at spontaneous combustion due to exothermic chemical reaction taking place within a stockpile of combustible material. The model includes mass and energy balance equations in a spherical domain. The complicated chemical reaction is simplified by considering a one-dimensional process. The differential equations governing the problem are solved using semi-implicit finite difference method. The effects of kinetic parameters embedded within the system are analyzed and the results are expressed graphically and discussed accordingly.

Study on Thermal Decomposition Kinetics of Nano-Cr(OH)3 Powder

2014 ◽  
Vol 692 ◽  
pp. 377-380 ◽  
Author(s):  
Feng Pan ◽  
Zai Yuan Li ◽  
Chun Ji Li
Keyword(s):  
Activation Energy ◽  
Thermal Decomposition ◽  
Shape Factor ◽  
Decomposition Analysis ◽  
Decomposition Kinetics ◽  
Peak Shape ◽  
Exponential Factor ◽  
Mechanism Function ◽  
Kinetics Of ◽  
Tga Analysis

Abstract. This paper studies on the thermal decomposition analysis kinetics of nanometer powders. The DTA-TG-DTG curves obtain by SDT 2960 Simultaneous DSC-TGA analysis apparatus. Under the condition of N2atmosphere operation and rise temperature velocity was 10°C·min-1. The mechanism function dα/dt=κ(1-α)nis used to calculate the kinetics factors. Reaction progressionnwas obtained by calculation of the kissinger peak shape factor method. The results showed that the apparent activation energy of nano-Ni(OH)2was 254.027 KJ·mol-1, the pre-exponential factor was 3.062×1036, the reaction progression was obtained as 1.560, the kinetic equation is dα/dt=3.062×1036exp(-30554.166/T)(1-α)1.560

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