Metastability of Tialite Synthesised from Nanometric Precursors

Stabilized tialite–mullite composites with low thermal expansion and high strength for catalytic converters

“…The maximum decomposition rate is reached between 1100 and 1150 • C and the reaction completes after 5-50 h. 13 Yet, the decomposition temperature is believed to change depending on precursor's particle size. [12][13][14] Some oxide dopants like SiO 2 , ZrO 2 , 11 MgO, 10,14,15 Fe 2 O 3 , 2,16 mullite, [17][18][19][20] ZrSiO 4 14 and rare-earth oxides have been used to control the decomposition. Among these stabilizers, Fe 2 O 3 and MgO appear to offer a high degree of phase stability in critical conditions.…”