整体式电热合金基催化剂对有机废气的电热催化氧化净化研究

项目名称： 整体式电热合金基催化剂对有机废气的电热催化氧化净化研究

项目编号： No.21477092

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： 李进军

作者单位： 武汉大学

项目金额： 85万元

中文摘要： 挥发性有机物（VOCs）是造成大气灰霾和光化学烟雾污染的重要因素，对有机废气进行治理是改善大气质量的必然选择。催化氧化是常用的有机废气治理方法之一，但传统的催化氧化净化设备需要额外的加热装置，体积大，成本高，制约了其广泛应用。本项目建议书提出基于整体式金属电热材料的有机废气电热催化氧化控制方案，即将电热合金材料制成一定的整体式结构，在其上面负载催化活性组分，通过直接向催化剂中通入电流，使有机物的氧化分解反应活化。该方法具有一系列可以预见的优点：加热-催化反应活化一体化，设备简单，能量利用率高，降低成本；整体式结构和高机械强度适用于大风量污染物的净化；电热合金材料成本低廉，且易于回收。拟对以下关键科学问题进行攻关：致密电热合金材料表面处理与活性组分键联；电热催化反应器的结构优化；典型有机污染物的电热催化氧化反应动力学与电流的多重效应等。相关的研究有望为大气污染控制增加技术方法的基础储备。

中文关键词： 大气污染控制；环境催化；催化氧化；挥发性有机物；反应机理

英文摘要： Volatile organic compounds (VOCs) are important pollutants that lead to Atmospheric haze and photochemical smog, and it is necessary to purifying organics-containing exhaust fumes for improving air quality. Catalytic oxidation is one of the most popular methods in dealing with VOCs, whereas the traditional process involves extra heating devices, and the high-cost inhibits the applications. In this proposal, we study the electrothermally catalytic oxidation of VOCs on monolithic electrothermal alloy-based catalysts. This process involves loading catalysts on monolithic electrothermal alloys, passing electric currents through the alloys to raise the temperature when organic vapors flow across the monolith surface, decomposing the organics. This mehtod has some obvious advantages: the combined heating-activation process insure simplicity in equipment and high energy efficiency, which lower operating cost; the monolithic structure and high mechanical strength favor the treatment of pollutants with high flowing rate; and the alloys are cheap and can be easily recycled. The research will be focused on some scientific points: the surface modification of alloys and binding with active phases, the optimization of reactor, the catalytic behavior for typical pollutants and the multiple effects of electric currents, and so on. The research might provide some inspiration on air pollution control.

英文关键词： Air pollution control;Environmental catalysis;Catalytic oxidation;Volatile organic compounds;Reaction mechanism