Decomposition kinetics of iron (III)-diclofenac compound

被引:16
作者
Kobelnik, M. [1 ]
Bernabe, Giseli Aparecida [1 ]
Ribeiro, C. A. [1 ]
Capela, J. M. V. [1 ]
Fertonani, F. L. [1 ]
机构
[1] Univ Estadual Paulista, UNESP, Dept Quim Analit, Inst Quim Araraquara, Sao Paulo, SP, Brazil
关键词
Iron(III)-diclofenac; Thermal decomposition; Non-isothermal; Activation energy; METAL-COMPLEXES; DICLOFENAC;
D O I
10.1007/s10973-009-0336-5
中图分类号
O414.1 [热力学];
学科分类号
摘要
Non-isothermal decomposition of iron (III)-diclofenac anhydrous salt was investigated by thermogravimetry (TG) under different conditions in opened and closed alpha-alumina pans under nitrogen atmosphere. To estimate the activation energy of decomposition, the Capela and Ribeiro isoconversional method was applied. The results show that due to the lid cover different activation energies were obtained. From these curves a tendency can be seen where the plots maintain the same profile for closed lids and almost run parallel to each other. Independently of the different experimental conditions no remarkably different results have been obtained.
引用
收藏
页码:493 / 496
页数:4
相关论文
共 12 条
[1]   Spectroscopic characteristics and thermal properties of divalent metal complexes of diclofenac [J].
Bucci, R ;
Magrì, AD ;
Magrì, AL ;
Napoli, A .
POLYHEDRON, 2000, 19 (24-25) :2515-2520
[2]   Rational approximations of the Arrhenius integral using Jacobi fractions and gaussian quadrature [J].
Capela, Jorge M. V. ;
Capela, Marisa V. ;
Ribeiro, Clovis A. .
JOURNAL OF MATHEMATICAL CHEMISTRY, 2009, 45 (03) :769-775
[3]   Diclofenac salts.: III.: Alkaline and earth alkaline salts [J].
Fini, A ;
Fazio, G ;
Rosetti, F ;
Holgado, MA ;
Iruín, A ;
Alvarez-Fuentes, J .
JOURNAL OF PHARMACEUTICAL SCIENCES, 2005, 94 (11) :2416-2431
[4]  
Galwey A.K., 1999, THERMAL DECOMPOSITIO, V1st
[5]   Titanium(IV)-EDTA complex - Kinetics of thermal decomposition by non-isothermal procedures [J].
Guinesi, Luciana S. ;
Ribeiro, C. A. ;
Crespi, Marisa S. ;
Santos, A. F. ;
Capela, Marisa V. .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2006, 85 (02) :301-307
[6]   Anti-inflammatory properties of diclofenac transition metalloelement complexes [J].
Konstandinidou, M ;
Kourounakis, A ;
Yiangou, M ;
Hadjipetrou, L ;
Kovala-Demertzi, D ;
Hadjikakou, S ;
Demertzis, M .
JOURNAL OF INORGANIC BIOCHEMISTRY, 1998, 70 (01) :63-69
[7]   Transition metal complexes of diclofenac with potentially interesting anti-inflammatory activity [J].
Kovala-Demertzi, D .
JOURNAL OF INORGANIC BIOCHEMISTRY, 2000, 79 (1-4) :153-157
[8]  
KUGTRIN SA, 1997, J PHARM BIOMED ANAL, V16, P147
[9]   Non-isothermal kinetic for lyophilized leachate from sanitary landfill and composting usine [J].
Lima, Evaneide Nascimento ;
Crespi, Marisa Spirandeli ;
Ribeiro, C. A. ;
de Almeida, Sonia .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 90 (03) :823-826
[10]   Simultaneous thermal analysis of a cobalt(II) complex with nicotinate [J].
Liu, YH ;
Yu, JH ;
Zhao, JZ ;
Zhang, H ;
Deng, YH ;
Wang, ZC .
THERMOCHIMICA ACTA, 2004, 419 (1-2) :115-117