scholarly journals Kinetic Analysis of Temperature-Programmed Autoxidation of Ethyl Eicosapentaenoate and Ethyl Docosahexaenoate

1999 ◽  
Vol 63 (8) ◽  
pp. 1336-1339 ◽  
Author(s):  
Hidefumi YOSHII ◽  
Takeshi FURUTA ◽  
Takatoki ITOH ◽  
Yoshihisa MISAWA ◽  
Noriaki HATA ◽  
...  
Keyword(s):  
Kinetic Analysis ◽  
Temperature Programmed ◽  
Ethyl Docosahexaenoate

scholarly journals An alternative approach to kinetic analysis of temperature-programmed reaction data

RSC Advances ◽  
2018 ◽  
Vol 8 (6) ◽  
pp. 3286-3295 ◽  
Author(s):  
A. S. Portnyagin ◽  
A. P. Golikov ◽  
V. A. Drozd ◽  
V. A. Avramenko
Keyword(s):  
Particle Size ◽  
Kinetic Analysis ◽  
Kinetic Parameters ◽  
Isothermal Reaction ◽  
Alternative Approach ◽  
Reaction Data ◽  
Temperature Programmed ◽  
Temperature Programmed Reaction

Presented method of kinetic analysis of non-isothermal reaction data provides precise kinetic parameters for different materials with different morphology and particle size.

scholarly journals Morphological Features and Sorption Performance of Materials Based on Birnessite Exposed to Various Reductive Conditions

2018 ◽  
Vol 2 (4) ◽  
pp. 70
Author(s):  
Arseniy Portnyagin ◽  
Andrey Egorin ◽  
Alexey Golikov ◽  
Eduard Tokar ◽  
Vitaliy Mayorov ◽  
...  
Keyword(s):  
Porous Structure ◽  
Kinetic Analysis ◽  
Manganese Oxide ◽  
Structural Changes ◽  
Xrd Analysis ◽  
Operating Regime ◽  
Repeated Use ◽  
Temperature Programmed ◽  
Amorphous Surface ◽  
Sorption Characteristics

The article is devoted to the evolution of structural, morphological, and sorption characteristics of layered manganese oxide (birnessite) under various conditions close to the real operating regime of the sorbents for radioactive waste processing. To identify the phase composition in the birnessites, we implemented XRD analysis, while SEM and temperature-programmed reduction (TPR) were used to study morphological and redox features of the materials, respectively. Structural changes after various kinds of treatment of birnessites were tracked using low temperature nitrogen sorption. Sorption characteristics were assessed under static and in dynamic conditions on the efficiency of Sr2+ removal from simulated seawater. TPR combined with kinetic analysis revealed the decrease of particle sizes in the birnessites after repeated use in sorption-regeneration cycle and reduction with hydrazine. Despite the fact that the porous structure of the materials remains preserved, the surface morphology of birnessite changes drastically depending on the reducing agent. Hydrazine treatment increases the sorption performance of the birnessite followed by degradation of mechanical properties, thus, preventing such sorbent from repeated use. Kinetic analysis of TPR allows quantifying differences in morphology and porous structure of manganese oxide materials. The specific surface area, amorphous surface structure, and accessibility of Mn+3 sites are the most important factors for birnessite sorption performance.

Kinetic analysis of temperature-programmed desorption

2004 ◽  
Vol 258 (2) ◽  
pp. 135-144 ◽  
Author(s):  
J.M. Kanervo ◽  
K.M. Reinikainen ◽  
A.O.I. Krause
Keyword(s):  
Kinetic Analysis ◽  
Temperature Programmed Desorption ◽  
Temperature Programmed
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