摘要
核-壳结构纳米复合材料基于壳对核的有效保护和核壳之间的相互作用而表现出优异的脱硝活性和抗毒性。从核-壳催化剂的制备方法及核壳组成对脱硝活性的影响进行了总结和讨论。采用化学沉积法、自组装法和水热法等制备方法,以TiO2、CeO2和Fe-ZSM-5分子筛等为壳结构时,能有效阻止SO2对活性中心原子的毒化作用,从而提高脱硝催化剂的抗硫性。通过优化成核的活性组分和成壳的物质,有望制备出具有高活性和高稳定性的核-壳脱硝催化剂。
The core-shell structure nanocomposites exhibit excellent denitrification activity and toxicity resistance based on the effective protection of the shell on the core and the interaction between the core and the shell.In this paper,influence ofthe preparation method andthecore and shell composition on the denitrification activity were summarized and discussed.When TiO2,CeO2 and Fe-ZSM-5 zeolites were used as the shell structure,the preparation methods such as chemical deposition method,self-assembly method and hydrothermal method could effectively prevent the poisoning of SO2 on the active central atom,thereby improving the SO2 resistance of the catalyst.It was expected to obtain a core-shell denitration catalyst with high activity and high stability by optimizing the nucleating active component and the shell-forming material.
作者
侯欣辛
李翔宇
陈红萍
杨旭
魏永林
HOU Xinxin;LI Xiangyu;CHEN Hongping;YANG Xu;WEI Yonglin(College of Chemical Engineering, Hebei Key Laboratory for Environment Photocatalytic and Electeocatalytic Materials,North China University of Science and Technology, Tangshan 063210, China;Coal Chemical Engineering Technology Research Center of Hebei Province, Tangshan 063210, China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2019年第9期9157-9162,共6页
Journal of Functional Materials
基金
国家自然科学基金资助项目(51874136)
河北省自然科学基金资助项目(B2017209111)
河北省高等学校科学技术研究资助项目(ZD2015116)
