Počet záznamů: 1  

Thermal behaviour of layered double hydroxides studied by emanation thermal analysis

  1. 1. 0163460 - UACH-T 20033008 RIV CH eng J - Článek v odborném periodiku
    Dorničák, V. - Balek, V. - Kovanda, F. - Večerníková, Eva
    Thermal behaviour of layered double hydroxides studied by emanation thermal analysis.
    Solid State Phenomena. 90-91, - (2003), s. 475-480 ISSN 1012-0394
    Výzkumný záměr: CEZ:AV0Z4032918
    Klíčová slova: hydrotalcite * layered double hydroxides * thermal decomposition
    Kód oboru RIV: CA - Anorganická chemie
    Impakt faktor: 0.687, rok: 2003

    Thermal behaviour of the Mg-Al, Co-Al, and Ni-Al hydrotalcite-like compounds was studied during heating in air in the temperature range 20-1100 degreesC using the emanation thermal analysis (ETA), which is based on the measurement of the radon release rate from the samples previously labeled. The release of interlayer water followed by the dehydroxylation of hydroxide layers and decomposition of interlayer carbonate anions were observed during samples heating. Thermal decomposition of samples was accompanied by the sharp increase of surface area and radon release rate, which then decreased with increasing temperature as crystallization of formed oxides took place. The ETA results were in a good agreement with results of thermal analysis (TG, DTA, EGA), X-ray diffraction and BET surface area measurements.
    Trvalý link: http://hdl.handle.net/11104/0060702