Effects of Doping CeO2,Er2O3 on Properties of TiO2-SiO2 Ceramics for Catalyst Supporter of deNOx
来源期刊：Journal of Rare Earths2006年第S1期
论文作者：祝社民 沈岳松 李伟峰 刘亚云
文章页码：234 - 238
摘 要：<正>Effects of doping CeO2 and Er2O3 on the mechanical strength, thermal expansion coefficient, sintering temperature of TiO2-SiO2 ceramics were investigated. The experimental results and the microscopic analysis of SEM, XRD, TG-DSC, FT-IR and TEM show that adding CeO2 and Er2O3 into TiO2-SiO2 ceramics can prohibit the growth of its crystal grains, make their size uniform and form them into a dense structure, which finally enhance its mechanical behaviors, and the lower thermal expansion coefficient that leads to an excellent property of thermal shock resistance. After the reforming TiO2-SiO2 ceramics doped by CeO2 was sintered at 1380℃, the bending strength reached to 83 MPa, and the thermal expansion coefficient was 9.8×10-6/℃within the temperature range of 25 800℃, which provides a promising basis of making equipped honeycomb catalyst of deNOx.
祝社民，沈岳松，李伟峰，刘亚云
摘 要：<正>Effects of doping CeO2 and Er2O3 on the mechanical strength, thermal expansion coefficient, sintering temperature of TiO2-SiO2 ceramics were investigated. The experimental results and the microscopic analysis of SEM, XRD, TG-DSC, FT-IR and TEM show that adding CeO2 and Er2O3 into TiO2-SiO2 ceramics can prohibit the growth of its crystal grains, make their size uniform and form them into a dense structure, which finally enhance its mechanical behaviors, and the lower thermal expansion coefficient that leads to an excellent property of thermal shock resistance. After the reforming TiO2-SiO2 ceramics doped by CeO2 was sintered at 1380℃, the bending strength reached to 83 MPa, and the thermal expansion coefficient was 9.8×10-6/℃within the temperature range of 25 800℃, which provides a promising basis of making equipped honeycomb catalyst of deNOx.
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