In situ and ex situ studies on thermal decomposition process of hydromagnesite Mg5(CO3)4(OH)2·4H2O

2020 ◽  
Author(s):  
Gen-ichiro Yamamoto ◽  
Atsushi Kyono ◽  
Yoshinari Sano ◽  
Yoshitaka Matsushita ◽  
Yasuhiro Yoneda
Keyword(s):  
Thermal Decomposition ◽  
Decomposition Process ◽  
Ex Situ ◽  
Thermal Decomposition Process

A new approach towards the study of thermal decomposition and formation processes of nanoalloys: the double complex salt [Pd(NH3)4][PtCl6]

2018 ◽  
Vol 42 (7) ◽  
pp. 5071-5082 ◽  
Author(s):  
Tatyana I. Asanova ◽  
Igor P. Asanov ◽  
Min-Gyu Kim ◽  
Mihaela Gorgoi ◽  
Jonas Sottmann ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Complex Salt ◽  
Decomposition Process ◽  
Formation Processes ◽  
Thermal Decomposition Process ◽  
Double Complex ◽  
New Approach ◽  
Double Complex Salt

The thermal decomposition process of the [Pd(NH3)4][PtCl6] double complex salt was investigated using in situ XAFS, XPS, HAXPES, and XRD.

Probing the thermal decomposition process of layered double hydroxides through in situ 57Fe Mössbauer and in situ X-ray diffraction experiments

2006 ◽  
Vol 42 (2) ◽  
pp. 534-538 ◽  
Author(s):  
Daniel X. Gouveia ◽  
Odair P. Ferreira ◽  
Antonio G. Souza Filho ◽  
M. G. da Silva ◽  
J. A. C. de Paiva ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Layered Double Hydroxides ◽  
Decomposition Process ◽  
X Ray Diffraction ◽  
Thermal Decomposition Process ◽  
X Ray ◽  
57Fe Mössbauer ◽  
Double Hydroxides

In situ synthesis of catalytic metal nanoparticle-PDMS membranes by thermal decomposition process

2011 ◽  
Vol 71 (2) ◽  
pp. 129-133 ◽  
Author(s):  
Anubha Goyal ◽  
Melinda Mohl ◽  
Ashavani Kumar ◽  
Robert Puskas ◽  
Akos Kukovecz ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
In Situ Synthesis ◽  
Decomposition Process ◽  
Metal Nanoparticle ◽  
Thermal Decomposition Process ◽  
Catalytic Metal

Preparation and Decomposition Study of 2, 3-Pyridinedicarboxylate Intercalated Layered Double Hydroxides

2006 ◽  
Vol 11-12 ◽  
pp. 449-452 ◽  
Author(s):  
Xiang Yu Xu ◽  
Min Wei
Keyword(s):  
Thermal Decomposition ◽  
Layered Double Hydroxides ◽  
Decomposition Process ◽  
Coprecipitation Method ◽  
Thermal Decomposition Process ◽  
Solid Product ◽  
Interlayer Region ◽  
Double Hydroxides

Supramolecular 2,3-pyridinedicarboxylate intercalated NiAl-layered double hydroxides (2,3-pyridinedicarboxylate-NiAl-LDHs) has been prepared by direct coprecipitation method. The solid product was found to have a greatly expanded LDH structure. Possible orientation of 2,3-pyridinedicarboxylate between the interlayer region has been proposed. Furthermore, its thermal decomposition process was studied by the use of TG-MS and in situ HT-XRD.

scholarly journals Thermal behavior and decomposition kinetics of rifampicin polymorphs under isothermal and non-isothermal conditions

2010 ◽  
Vol 46 (2) ◽  
pp. 343-351 ◽  
Author(s):  
Ricardo Alves ◽  
Thaís Vitória da Silva Reis ◽  
Luis Carlos Cides da Silva ◽  
Silvia Storpírtis ◽  
Lucildes Pita Mercuri ◽  
...  
Keyword(s):  
Thermal Decomposition ◽  
Thermal Behavior ◽  
Melting Process ◽  
Decomposition Process ◽  
Stable Form ◽  
Thermal Decomposition Process ◽  
Mean Values ◽  
Conversion Level ◽  
Polymorphic Forms ◽  
Crystalline Forms

The thermal behavior of two polymorphic forms of rifampicin was studied by DSC and TG/DTG. The thermoanalytical results clearly showed the differences between the two crystalline forms. Polymorph I was the most thermally stable form, the DSC curve showed no fusion for this species and the thermal decomposition process occurred around 245 ºC. The DSC curve of polymorph II showed two consecutive events, an endothermic event (Tpeak = 193.9 ºC) and one exothermic event (Tpeak = 209.4 ºC), due to a melting process followed by recrystallization, which was attributed to the conversion of form II to form I. Isothermal and non-isothermal thermogravimetric methods were used to determine the kinetic parameters of the thermal decomposition process. For non-isothermal experiments, the activation energy (Ea) was derived from the plot of Log β vs 1/T, yielding values for polymorph form I and II of 154 and 123 kJ mol-1, respectively. In the isothermal experiments, the Ea was obtained from the plot of lnt vs 1/T at a constant conversion level. The mean values found for form I and form II were 137 and 144 kJ mol-1, respectively.

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