NDLI: A study of thermal and dielectric behavior of melaminium perchlorate monohydrate single crystals

Content Provider	Springer Nature Link
Author	Kanagathara, N. Marchewka, M. K. Sivakumar, N. Gayathri, K. Renganathan, N. G. Gunasekaran, S. Anbalagan, G.
Copyright Year	2012
Abstract	Single crystals of melaminium perchlorate monohydrate (MPM) have been grown from aqueous solution by slow solvent evaporation method at room temperature. X-ray powder diffraction analysis confirms the title crystal crystallizes in the triclinic (P-1) structure and the calculated lattice parameters are a = 5.6275 ± 0.0780 Å, b = 7.6926 ± 0.1025 Å, c = 12.0878 ± 0.2756 Å, α = 103.89 ± 1.01°, β = 94.61 ± 0.92°, γ = 110.22 ± 0.81°, and V = 468.95 Å$^{3}$. The thermal decomposition behavior of MPM has been studied by means of thermogravimetric analysis at three different heating rates 5, 10, and 20 °C min$^{−1}$. The values of effective activation energy (E $_{a}$), pre-exponential factor (ln A) of each stage of thermal decomposition for all heating rates were calculated by model free method: Kissinger, Kim–Park, and Flynn–Wall method. A significant variation of effective activation energy (E $_{a}$) with conversion (α) indicates that the process is kinetically complex. The linear relationship between the A and E $_{a}$ values was established (compensation effect). Dielectric study has also been carried out and it is found that both dielectric constant (ε′) and dielectric loss (ε″) decreases with increase in frequency.
Starting Page	1317
Ending Page	1323
Page Count	7
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	112
Issue Number	3
e-ISSN	15728943
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-10-09
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Melaminium perchlorate monohydrate (MPM) Energy of activation Thermal properties Kinetics Dielectric constant Dielectric loss Physical Chemistry Analytical Chemistry Polymer Sciences Inorganic Chemistry Measurement Science and Instrumentation
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry Condensed Matter Physics

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