强抗碱金属中毒的氨选择性还原氮氧化物催化剂

项目名称： 强抗碱金属中毒的氨选择性还原氮氧化物催化剂

项目编号： No.21477023

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 化学工业

项目作者： 唐幸福

作者单位： 复旦大学

项目金额： 88万元

中文摘要： 本项目为强抗碱金属中毒的氨选择性还原氮氧化物催化剂的研究，拟开发一种催化活性位和碱金属捕获位分别独立的CeO2/TiO2@HMO（CTH）高效脱硝催化剂（HMO为Hollandite型MnO2）。研究内容：1.研发以催化活性的CeO2为外层、捕获碱金属的HMO为内层和TiO2为夹层的脱硝催化剂；2.证明CTH具有独立的催化活性位和碱金属捕获位；3.建立CTH碱金属捕获位的结构与抗中毒性能之间的构效关系；4.探索CTH的抗碱金属中毒机理。预期的重要成果：i.研制出强抗碱金属中毒的高效脱硝催化剂；ii.证明催化活性位和碱金属捕获位的独立存在性和相互协作原理；iii.构建CTH碱金属捕获位的构效关系；iv.建立脱硝催化剂普适性的抗碱金属中毒机理。本项目对研制以生物质(或与燃煤混合)为燃料的锅炉烟气脱硝催化剂具有重要的科学理论意义，对控制大气细颗粒污染物(如PM2.5)的排放具有重要的应用价值。

中文关键词： 大气污染控制；环境催化；烟气脱硝；氮氧化物；选择性催化还原

英文摘要： This project is to study strong alkali-resistant and environment-friendly deNOx catalysts for selective catalytic reduction of NOx with NH3, and the objective is to synthesize a novel CeO2/TiO2@HMO (CTM)catalyst with separated catalytically active sites and alkali-trapping sites (HMO is Hollandite MnO2). The main work is as follows: 1. to synthesize the deNOx catalyst containing the active phase CeO2 and the hollandite MnO2 for alkali trapping, and CeO2 and MnO2 are separated with TiO2 by covering TiO2 layers on the surface of the MnO2; 2. to identify the locations of the catalytically active sites and alkali-trapping sites of the CTH catalyst; 3. to establish the relationship between the structure of alkali-trapping sites and the alkali-resistant property; 4. to investigate the alkali-resistant mechanism that the CTH catalyst trapps the alkali ions during the reactions. There are four expected results: i.the strong alkali-resistant and environment-friendly deNOx catalyst will be successfully developed,ii.the catalytically active sites and alkali-trapping sites of the CTH deNOx catalysts will be proven to be separated with each other,and the synergistic effect of two separate sites will be obtained，iii.the structure-property of the alkali-trapping sites of the CTH catalyst will be correlated, iv.the general alkaili-resistanct mechanism of the deNOx catalysts will be achieved according to these results of the project. It is of scientific and fundamental importance of the project to develop efficient deNOx catalysts specially suitable for controlling NOx emission from the stack gases of the plant (co-)fuelled by the biomass, and the results of this project will be technologically served as a solid base for thoroughly controlling the emission of the atmospheric fine particulate matters such as PM2.5.

英文关键词： Air Pollution Control;Environmental Catalysis;deNOx;NOx;Selective Catalytic Reduction