DTA/TG Study of the Interaction in the Nickel Nitrate Hexahydrate–Hexamethylentetramine System

DTA/TG Study of the Interaction in the Nickel Nitrate Hexahydrate–Hexamethylentetramine System

This paper presents the results of DTA/TG studies of one of the most popular systems in solution combustion synthesis (SCS) nickel nitrate hexahydrate (Ni(NO 3 ) 2 ⋅6H 2 O)–hexamethylenetetramine (C 6 H 12 N 4 ). X‑ray diffraction and EDS-assisted SEM are used for characterizing the reaction product...

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Bibliographic Details
Published in:Russian journal of physical chemistry. B Vol. 17; no. 1; pp. 122 - 127
Main Authors: Arzumanyan, A. S., Amirkhanyan, N. G., Grigoryan, Y. G., Kharatyan, S. L.
Format: Journal Article
Language:English
Published: Moscow Pleiades Publishing 01-02-2023
Springer Nature B.V
Subjects:
Chemistry
Chemistry and Materials Science
Combustion synthesis
Differential thermal analysis
Distilled water
Heat treatment
Hexamethylenetetramine
Mixtures
Nickel
Physical Chemistry
Physical Methods for Investigation of Chemical Processes
Reaction products
Reagents
DTA
XPA methods
TG
DTG
solution combustion synthesis
hexamethylenetetramine
nickel nitrate hexahydrate
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Summary:This paper presents the results of DTA/TG studies of one of the most popular systems in solution combustion synthesis (SCS) nickel nitrate hexahydrate (Ni(NO 3 ) 2 ⋅6H 2 O)–hexamethylenetetramine (C 6 H 12 N 4 ). X‑ray diffraction and EDS-assisted SEM are used for characterizing the reaction products. The specified system is studied in the form of a powder mixture, a gel obtained by dissolving the initial reagents in distilled water, and the same gel, heat treated at 100°C. It is established that the formation of metallic nickel is possible only if the mixture of reagents is first transferred to the gel state. The values of the effective activation energies of the formation of NiO and metallic nickel are calculated, and the features of the course of interactions depending on the method of preparation of the studied samples are presented.
ISSN:1990-7931
1990-7923
DOI:10.1134/S1990793123010177