Preparation and properties of a new porous ceramic material used in clean energy field
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2019年第7期
论文作者：Shuming Wang Xiaofang Zhang Fenghua Kuang Jiangshan Li Yanxin Wang Ruiping Wang Yanru Wang Xin Lin Jianming Li
文章页码：1255 - 1260
摘 要：At high temperature, the oxide redox reactions of ceria can split H2O and CO2 to produce H2 and CO, so porous ceria with high temperature resistance and high specific surface area has an important foreground in clean energy applications. In this work, a reticulated porous ceria ceramic material with interconnected porous structure was prepared by the impregnation technique using organic polyurethane sponges as template. The influences of pretreated sponge, dipping time length, pore size and sintering temperature on the porosity and strength of the porous ceria ceramics were systematically studied. With the increasing sintering temperature, the glass phase occurred and led to an increase in strength, but an decrease in porosity. Eventually, we analyzed the relationships between porosity and strength of these porous materials, aiming to provide theoretical and practical references for its application in clean-energy field.
Shuming Wang，Xiaofang Zhang，Fenghua Kuang，Jiangshan Li，Yanxin Wang，Ruiping Wang，Yanru Wang，Xin Lin，Jianming Li
Department of Materials Science and Engineering, University of Science & Technology BeijingCeramic Science Institute China Building Materials AcademyState Key Laboratory of Solidification Processing, Northwestern Polytechnical UniversityBohai Shipyard Group Co., Ltd.
摘 要：At high temperature, the oxide redox reactions of ceria can split H2O and CO2 to produce H2 and CO, so porous ceria with high temperature resistance and high specific surface area has an important foreground in clean energy applications. In this work, a reticulated porous ceria ceramic material with interconnected porous structure was prepared by the impregnation technique using organic polyurethane sponges as template. The influences of pretreated sponge, dipping time length, pore size and sintering temperature on the porosity and strength of the porous ceria ceramics were systematically studied. With the increasing sintering temperature, the glass phase occurred and led to an increase in strength, but an decrease in porosity. Eventually, we analyzed the relationships between porosity and strength of these porous materials, aiming to provide theoretical and practical references for its application in clean-energy field.
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