TITLE

Decomposition process and kinetics of waste rare earth polishing powder TG-DTA-FTIR studies

AUTHOR(S)
Wang, XiuYan; Liu, JieMin; Yang, QiShan; Du, Jian; Wang, FengE; Tao, Wu
PUB. DATE
July 2012
SOURCE
Journal of Thermal Analysis & Calorimetry;Jul2012, Vol. 109 Issue 1, p419
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The decomposition reaction process of waste rare earth (RE) polishing powder was monitored in real time by the thermogravimetry-differential thermal analysis (TG-DTA) and Fourier transform infrared spectroscopy (FTIR). The results showed that the reaction was divided into two stages, and the thermal weight losses got to stable when the temperature was more than 400 °C. The releasing gas mainly contained HO and SiF, and the reaction kinetics during decomposition process was studied by the methods of Freeman-Carroll and Kissinger.
ACCESSION #
76447148

 

Related Articles

  • Thermoanalytical study of heavier trivalent lanthanides fumarates. Alves, F.; Bembo, L.; Caires, F.; Ionashiro, E. // Journal of Thermal Analysis & Calorimetry;Aug2013, Vol. 113 Issue 2, p739 

    Solid-state heavier lanthanides fumarates compounds have been synthesized, and the compounds were characterized by employing simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC), Fourier transform infrared spectroscopy (FTIR), TG...

  • Synthesis, characterization and thermal behaviour of light trivalent lanthanides folates on solid state. Dametto, P.; Caires, F.; Ambrozini, B.; Ionashiro, M. // Journal of Thermal Analysis & Calorimetry;Sep2011, Vol. 105 Issue 3, p831 

    Solid state Ln-L compounds, where Ln stands for light trivalent lanthanides (lanthanum to gadolinium), except promethium, and L is folate (CHNO), have been synthesized. Simultaneous thermogravimetry and differential thermal analysis (TG-DTA), differential scanning calorimetry (DSC), X-ray powder...

  • Kinetics of thermal decomposition of natrium oxalato-oxo-diperoxo molibdate. Bodescu, Adina-Maria; Sîrghie, Cecilia; Vlase, Titus; Doca, Nicolae // Journal of Thermal Analysis & Calorimetry;Dec2012, Vol. 110 Issue 3, p1243 

    Synthesis, characterizations, and thermal behavior of Na[MoO(O)(CO)] was studied. The thermally induced events will be observed by comparing the FT-IR spectra of the initial compound and of the char at 300 and 500 °C. The TG data were obtained at different heating rates: β = 2.5, 4, 5, and...

  • Influence of some lime-containing additives on the thermal behavior of urea. Klimova, Irina; Kaljuvee, Tiit; Mikli, Valdek; Trikkel, Andres // Journal of Thermal Analysis & Calorimetry;Jan2013, Vol. 111 Issue 1, p253 

    Urea is one of the main nitrogen fertilizers used in agriculture. But being well soluble in water, hardly 50% of its nitrogen is assimilated by plants. One possibility to eliminate this disadvantage is to use coating agents for modification of urea to obtain a controlled-realized fertilizer. The...

  • Thermal decomposition and kinetics studies on poly(BDFAO/THF), poly(DFAMO/THF), and poly(BDFAO/DFAMO/THF). Li, Huan; Pan, Renming; Wang, Wanjun; Zhang, Luyao // Journal of Thermal Analysis & Calorimetry;Oct2014, Vol. 118 Issue 1, p189 

    Poly(3,3-bis(difluoroaminomethyl)oxetane/tetrahydrofuran), poly(3-difluoroaminomethyl-3-methyloxetane/tetrahydrofuran), and poly(3,3-bis(difluoroaminomethyl)oxetane/3-difluoroaminomethyl-3-methyloxetane/tetrahydrofuran) were synthesized via cationic bulk polymerization using boron trifluoride...

  • Thermooxidative decomposition of oil shales. Kaljuvee, Tiit; Keelmann, Merli; Trikkel, Andres; Kuusik, Rein // Journal of Thermal Analysis & Calorimetry;Aug2011, Vol. 105 Issue 2, p395 

    The thermooxidative decomposition of four oil shale samples from Estonia, Jordan, Israel and Morocco and one sample of Estonian oil shale derivative, semicoke, was studied with the aim to determine the characteristics of the process and the differences of it related to the origin of oil shale....

  • Thermal and FTIR spectral studies of N, N′-diphenylguanidine. Hu, Q.; Jin, H.; Chen, X.; Wang, S. // Journal of Thermal Analysis & Calorimetry;Nov2012, Vol. 110 Issue 2, p593 

    Thermal decomposition of N,N′-diphenylguanidine (DPG) was investigated by simultaneous TG/DSC-FTIR techniques under nonisothermal conditions. Online FTIR measurements illustrate that aniline is a major product of DPG decomposition. The observation that the activation energy depends on the...

  • Thermal and spectroscopic study of the lanthanide 2-aminoterephthalate compounds in the solid state. Almeida, Cristiane; Andrade, Robson; Aguiar, Lais; Caires, Flávio; Falcão, Evaristo; Carvalho, Cláudio // Journal of Thermal Analysis & Calorimetry;Jul2014, Vol. 117 Issue 1, p251 

    Lanthanides 2-aminoterephthalate compounds were synthetized and characterized on the basis of TG-DTA data in order to study their thermal behavior, as well as to establish hydration grade and stoichiometry, while TG/FTIR system identified the gaseous products evolved during the thermal...

  • Thermal characterization of asphalt mixtures by TG/DTG, DTA and FTIR. Mothé, Michelle G.; Leni F. M. Leite; Cheila G. Mothé // Journal of Thermal Analysis & Calorimetry;Jul2008, Vol. 93 Issue 1, p105 

    The quality of a road relies on the good use of the on road surface and its maintenance along the years. The technology used and the corrections contributes to the prevention of early road destructions. Pavement with polmyer and others additives exhibits greater resistance to rutting, thermal...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics