Thermal decomposition of iron(II) oxalate-magnesium oxalate mixtures

被引:21
作者
Diefallah, EHM [1 ]
Mousa, MA [1 ]
El-Bellihi, AA [1 ]
El-Mossalamy, EH [1 ]
El-Sayed, GA [1 ]
Gabal, MA [1 ]
机构
[1] Zagazig Univ, Dept Chem, Banha, Egypt
关键词
decomposition; thermal analysis; Mossbauer; magnesium oxalate; iron(II) oxalate;
D O I
10.1016/S0165-2370(01)00117-6
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
The thermal decomposition of iron(II) oxalate-magnesium oxalate mixture (2:1 mole ratio) was investigated using DTA-TG, XRD and Mossbauer effect measurements. The decomposition of the anhydrous oxalate mixture proceeds in two steps and kinetic analysis of the two steps were performed under non-isothermal conditions using different integral methods of analysis. Integral composite analysis of data showed that the decomposition reactions are best described by the three-phase boundary, R-3 model. Kinetic analysis of data were also carried out in accordance with the methods of Ozawa and Coats-Redfern and the results are discussed in comparison with the composite analysis of data. Mossbauer spectra of samples calcined at different temperatures are discussed and show that in the early stages of the decomposition at about 300 C, part of the Fe(III) oxide is formed in superamagnetic doublet state. As the temperature is increased, supermagnetism disappears. The results of XRD analyses are in accordance with the results of the Mossbauer effect and show that magnesium ferrite forms in samples heated at higher temperatures. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:205 / 214
页数:10
相关论文
共 50 条
[31]   Thermal decomposition of rare-earth-doped calcium oxalate .1. Doping with lanthanum, samarium and gadolinium [J].
Patnaik, U ;
Muralidhar, J .
THERMOCHIMICA ACTA, 1996, 274 :261-272
[32]   Non-isothermal studies of the decomposition course of lanthanum oxalate decahydrate [J].
Balboul, BAA ;
El-Roudi, AM ;
Samir, E ;
Othman, AG .
THERMOCHIMICA ACTA, 2002, 387 (02) :109-114
[33]   A systematic investigation of the mechanochemical decomposition of Ag oxalate in rod drop experiments [J].
Ligios, Giorgio ;
Bertetto, Andrea Manuello ;
Delogu, Francesco .
JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 554 :426-431
[34]   Thermal decomposition mechanism of ammonium nitrate and copper (II) oxide mixtures [J].
lzato, Yu-ichiro ;
Kajiyama, Kazuomi ;
Miyake, Atsumi .
SCIENCE AND TECHNOLOGY OF ENERGETIC MATERIALS, 2014, 75 (5-6) :128-133
[35]   Thermal decomposition characteristics of mixtures of ammonium dinitramide and copper(II) oxide [J].
Hiroki Matsunaga ;
Yu-ichiro Izato ;
Hiroto Habu ;
Atsumi Miyake .
Journal of Thermal Analysis and Calorimetry, 2015, 121 :319-326
[36]   Controlled synthesis of polycrystalline nickel oxalate nanofibers by the mild thermal precipitation and aging process [J].
Li Tao ;
Liu Ying ;
Peng Tongjiang ;
Ma Guohua ;
Yang Xiaojiao .
JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION, 2011, 26 (06) :1041-1043
[37]   Thermal decomposition characteristics of mixtures of ammonium dinitramide and copper(II) oxide [J].
Matsunaga, Hiroki ;
Izato, Yu-ichiro ;
Habu, Hiroto ;
Miyake, Atsumi .
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2015, 121 (01) :319-326
[38]   Solution-based sequential modification of LiCoO2 particle surfaces with iron(II) oxalate nanolayers [J].
Kishimoto, Yuki ;
Yubuchi, So ;
Hayashi, Akitoshi ;
Tatsumisago, Masahiro ;
Makiura, Rie .
CRYSTENGCOMM, 2017, 19 (29) :4175-4181
[39]   Thermal kinetic TG-analysis of metal oxalate complexes [J].
Li, J ;
Zhang, FX ;
Ren, YW ;
Hun, YQ ;
Nan, YF .
THERMOCHIMICA ACTA, 2003, 406 (1-2) :77-87
[40]   Non-isothermal kinetics of the thermal decomposition of sodium oxalate Na2C2O4 [J].
Nopsiri Chaiyo ;
Rangson Muanghlua ;
Surasak Niemcharoen ;
Banjong Boonchom ;
Panpailin Seeharaj ;
Naratip Vittayakorn .
Journal of Thermal Analysis and Calorimetry, 2012, 107 :1023-1029