화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.64, 219-229, August, 2018
DOI10.1016/j.jiec.2018.03.018  Export Citation
Designed synthesis and characterization of nanostructured ceria-zirconia based material with enhanced thermal stability and its application in three-way catalysis
Jie Deng1, Yi Zhou1, Shanshan Li1, Lei Xiong1, Jianli Wang1, Shandong Yuan2, and Yaoqiang Chen3, 4, †
  • 1Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Sichuan, Chengdu 610064, China, Chile
  • 2Institute of New Energy and Low-Carbon Technology, Sichuan Province, Sichuan, Chengdu 610211, China
  • 3Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Sichuan, Chengdu 610064, China
  • 4Center of Engineering of Vehicular Exhaust Gases Abatement, Sichuan Province, Sichuan, Chengdu 610064, China
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Three CeO2-ZrO2-Y2O3-La2O3 (CZ) nanomaterials with controllable crystallite size were prepared by a simple co-precipitation method combined with hydrothermal treatment at different temperatures. The material CZ-180 possesses a high surface area of 43.6 m2 g-1 and a low reduction temperature of 344 °C simultaneously even after aging at 1000 °C for 4 h. Moreover, with improving hydrothermal temperature, the incorporation of rear earth metals was accelerated and surface properties were modified. And higher Pd dispersion and larger proportion of active Pd2+ species were achieved on the modified surface of CZ- 180. Consequently, the supported catalyst Pd/CZ-180 shows a superior three-way catalytic performance.
Keywords:Ceria-zirconia nanomaterial;Hydrothermal temperature;Surface properties;Thermal stability;Low-temperature reducibility;Pd dispersion
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