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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Synthesis, characterization and thermal behaviour of solid alkali metal mandelates in pyrolytic and oxidant atmosphere

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Author(s):
Silva, R. C. [1] ; Caires, F. J. [2] ; Gomes, D. J. C. [3] ; Colman, T. A. D. [4] ; Ionashiro, M. [4]
Total Authors: 5
Affiliation:
[1] Univ Estadual Paulista, Fac Ciencias Agr, BR-18603970 Sao Paulo - Brazil
[2] Univ Estadual Paulista, Dept Quin, BR-17033260 Sao Paulo - Brazil
[3] Inst Fed Educ Ciencia & Tecnol Piaui, Campus Paulistania Rod Br 407, S-N Ctr, Paulistania, Piaui - Brazil
[4] Univ Estadual Paulista, Inst Quim, BR-14801970 Araraquara, SP - Brazil
Total Affiliations: 4
Document type: Journal article
Source: JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS; v. 117, p. 157-161, JAN 2016.
Web of Science Citations: 1
Abstract

Characterization, thermal stability and thermal decomposition of alkali metal mandelates, M(C6H5CH(OH)CO2)nH(2)O (where M represents Na, K, Rb and Cs and n = 0.3 (Na), 0.6 (K), 2 (Rb) and 1 (Cs)) were investigated employing simultaneous thermogravimetry and differential scanning calorimetry (TG-DSC), atomic absorption spectrophotometry (AA), X-ray diffractometry and TG-DSC coupled to infrared spectrophotometer (FTIR). For all the compounds, the mass loss occurs in the beginning of the TG-DSC curves. In the nitrogen atmosphere it was observed that the mass loss of the anhydrous compounds occurs in four or five steps and the mass loss is still observed up to 1000 degrees C, except for the anhydrous compounds under dynamic dry air atmosphere, after the first three steps occurs with the formation of the respective carbonate. The results also provided information concerning the thermal stability and decomposition as well as identification of the gaseous products evolved during the thermal decomposition of these compounds. (C) 2015 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 13/09022-7 - Thermoanalytical studies, synthesis and characterization of the solid co-crystals of antibiotics (fluoroquinolones) with some co-formers
Grantee:Massao Ionashiro
Support Opportunities: Regular Research Grants