On the Decomposition of Synthetic Gibbsite Studied by Neutron Thermodiffractometry
نویسندگان
چکیده
The thermal decomposition mechanism of synthetic Al(OH)3 (gibbsite) was studied in situ by neutron thermodiffractometry in an ambient atmosphere from room temperature to 6001C with 501C steps. Gibbsite decomposed to yield AlO . (OH) (boehmite) and then poorly crystallized v-Al2O3. Rietveld analysis was used to refine the cell parameters’ variation of gibbsite and its thermal expansion coefficients were obtained: for the a-axis: 1571 10 6 K , for b: 1072 10 6 K , and for c: 1772 10 6 K .
منابع مشابه
Dehydration of Ca 3 Al 2 ( SiO 4 ) y ( OH ) 4 ( 3 − y ) ( 0 < y < 0 . 176 ) studied by neutron thermodiffractometry
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