Thermal stability of cordierite catalyst supports contaminated by Fe2O3, ZnO and V2O5
作者： Paolo Scardi , Natale Sartori , Angelo Giachello , Pier Paolo Demaestri , Francesco Branda
DOI: 10.1016/0955-2219(94)90036-1
关键词: Spinel 、 Aluminate 、 Inorganic chemistry 、 Aluminium oxides 、 Zinc 、 Catalyst support 、 Materials science 、 Cordierite 、 Thermal stability 、 Thermal treatment 、 Materials Chemistry 、 Ceramics and Composites
摘要: Abstract The effect of pollution diesel particulate filters on their thermal and chemical stability has been studied. Commercial cordierite supports were contaminated, separately, by Fe 2 O 3 , ZnO V 5 evolution after treatment in the range 800°C to 1200°C was followed XRD SEM. presence had little effect, whereas reacted completely even at lowest studied temperature, giving crystalline silica aluminium magnesium vanadates; formation a zinc silicate, aluminate with spinel structure glassy phase observed above 1000°C ZnO-contaminated samples. differences reactivity nature reaction products explained taking into account low melting point its acidic character. microstructural changes correlated mechanical properties supports.
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