NDLI: Synthesis and evaluation of the thermal behavior of flavonoids : Thermal decomposition of flavanone and 6-hydroxyflavanone

Content Provider	Springer Nature Link
Author	Ferreira, Leonardo Miziara Barboza Kobelnik, Marcelo Regasini, Luis Octavio Dutra, Luiz Antonio Silva Bolzani, Vanderlan Ribeiro, Clóvis Augusto
Copyright Year	2016
Abstract	Flavonoids in the broad sense of the term are virtually universal plant pigments. Synthesis of flavanone and 6-hydroxyflavanone was carried out and identified by H and C NMR. Details concerning the thermal behavior were evaluated by thermogravimetry under oxygen and nitrogen purge gases. Additionally, the kinetic studies were evaluated from several heating rates (5, 10 and 20 °C min$^{−1}$) and sample mass of 2 mg in open crucibles. The obtained data were evaluated with the isoconversional method, where the values of activation energy (E $_{a}$/kJ mol$^{−1}$) were plotted in function of the conversion degree (α). The results of thermal behavior of the flavanone under a nitrogen purge gas showed that this compound has a homogeneous degradation process while the hydroxyl group in the aromatic ring of 6-hydroxyflavanone there are two mass losses.
Starting Page	1605
Ending Page	1610
Page Count	6
File Format	PDF
ISSN	13886150
Journal	Journal of thermal analysis
Volume Number	127
Issue Number	2
e-ISSN	15882926
Language	English
Publisher	Springer Netherlands
Publisher Date	2016-10-17
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Flavanones NMR spectra Thermogravimetry 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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