基于稀土CeO2及铈改性的新型高效多孔NOx吸附材料的创制及性能研究

项目名称： 基于稀土CeO2及铈改性的新型高效多孔NOx吸附材料的创制及性能研究

项目编号： No.21303082

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 数理科学和化学

项目作者： 汤常金

作者单位： 南京大学

项目金额： 25万元

中文摘要： "十二五"计划首次将氮氧化物（NOx）列入约束性指标，氮氧化物已成为我国今后一段时间内的减排重点。实践证明，采用固体吸附是净化NOx的有效手段。针对我国稀土资源丰富的现状和稀土在NOx净化方面的独特性能，本项目拟以具有复合组成的稀土铈基金属氧化物空心球（Ce-Zr，Ce-Ti，Ce-Sn等）、不同形貌和结构的螺旋形介孔材料的制备及其对氮氧化物吸附性能为研究对象，从纳米吸附剂的制备和物理化学性质入手，借助TPD、原位红外等多种分析和表征手段，系统研究纳米氧化物材料的特殊结构形貌、表面原子的排列方式（暴露晶面）及改性处理(掺杂和负载)对吸附性能的影响，探讨其吸附-脱附的微观机理。通过本研究有望为开发新型高效的NOx吸附剂提供相关科学依据，推进环境保护技术的进步。

中文关键词： NO消除；稀土；多孔材料；吸附剂；

英文摘要： NOx emission has been regulated in the national 12th Five-Year Plan for the first time, and reduction of NOx will be very urgent and of great importance in the years ahead. The using of solid adsorbent is proved to be an effective way for NOx abatement. Considering the rich resources and unique properties of rare earth element in NOx abatement, the project will focus on the preparation and application of ceria-based materials, i.e.,hollow spheres with mixed compositions and spiral mesoporous materials with varied morphology and pore structures for NOx removal. With the aim of obtaining adsorbents with stable structures and outstanding reversible adsorption-desorption property, the program is scheduled to begin with the preparation of nano-adsorbents and study of their physicochemical properties, and then systematically investigate the effects of the special morphology，arrangement of surface atoms （exposed plane） and the modification treatment（metal doping and surface deposition of foreign metals）on the adsorption capacity, and explore their microcosmic mechanism of the adsorption-desorption process with the aid of a series of characterization techniques like TPD and in situ FTIR. We hope that the results will be offered to explore novel and high-performance adsorbents for NOx removal and a contribution would b

英文关键词： NO reduction；Rare earth；Porous materials；Adsorbent；