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首页> 外文期刊>Advanced Powder Technology: The internation Journal of the Society of Powder Technology, Japan >Synthesis of porous Mg-doped CeO2 powders via self-propagating high-temperature synthesis route
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Synthesis of porous Mg-doped CeO2 powders via self-propagating high-temperature synthesis route

机译：通过自展开高温合成途径合成多孔Mg掺杂的CeO2粉末

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The aim of this study was synthesis of Mg-doped porous cerium oxide powder by self-propagating high-temperature synthesis reaction of Mg-xCeO(2)-O-2 system. Results indicated that doping Mg in the CeO2 crystal structure increased its lattice parameter slightly, and shifted the Ce-O band in the FTIR spectra from 490 to 574 cm (1). Moreover, the EDS results revealed the distribution of Mg in the CeO2 microstructure. There were a high volume fraction of interconnected macro-pores in the microstructure of cerium oxide after the synthesis process. Increase in the x-value from 0.05 to 0.25 mol decreased the mean size and volume fraction of pores from 2.4 to 1 mu m and 50 to 30 vol%, respectively. In addition, the BET surface area of porous CeO2 varied between 0.3 and 1.57 m(2)/g. Finally, it was inferred that the SHS technique can be introduced as a rapid and novel method for synthesis of Mg-doped porous CeO2 powders. (C) 2019 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
机译：该研究的目的是通过Mg-Xceo（2）-O-2系统的自培养高温合成反应来合成Mg掺杂的多孔铈氧化物粉末。结果表明，CEO2晶体结构中的掺杂Mg略微增加其晶格参数，并将FTIR光谱中的CE-O频段从490到574cm（1）移位。此外，EDS结果显示了CEO2微观结构中MG的分布。合成过程后，在氧化铈的微观结构中存在互连的宏观孔。 X值的增加从0.05至0.25 mol的增加降低了孔的平均尺寸和体积分，分别为2.4至1μm和50至30体积％。此外，多孔CeO2的BET表面积不同0.3和1.57m（2）/ g。最后，推断SHS技术可以作为合成Mg掺杂多孔CeO2粉末的快速和新方法。 （c）2019年日本粉末技术学会。由elsevier b.v发表。和日本粉末科技会。版权所有。

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