锰氧化物分子筛上喷涂行业典型VOCs的氧化行为与反应机理

More and more volatile organic compounds (VOCs) from industrial emissions appear, which bring a deterioration of the environment. Catalytic oxidation is a effective method as a control of VOCs emission. This project is directed at VOCs in coating industry. Manganese oxide molecular sieve catalysts with high catalytic activity will be prepared. The aim is to reveal the effects of catalyst structure, acid-basic sites, active sites, additives and experimental conditions on catalytic activity, by-product distribution and CO2 selectivity. The results will reveal the improvement approach of catalysts on catalytic activities. The combination of the results above and dynamic models can derive the catalytic reaction mechanisms over metal-doped manganese oxide molecular sieves. The distribution of coke on catalysts will also be investigated by analyzing the component of coke under different reaction conditions. The results will acquire the mechanisms of coke formation on manganese oxide molecular sieves, and the better properties of catalysts will be proposed. Above research works can provide necessary theoretical foundation and research experience for the application of manganese oxide molecular sieve catalysts in coating industry.

涉及挥发性有机污染物（Volatile Organic Compounds, 简称 VOCs）排放的行业越来越多，引发诸多环境问题。催化燃烧法是控制VOCs的有效手段之一。本项目针对喷涂工艺过程中产生的VOCs，制备高活性的氧化锰分子筛催化剂进行催化氧化研究，旨在揭示催化剂的结构、酸碱性位、活性位、助剂、实验条件对催化活性、副产物分布及CO2选择性的影响，获得催化剂对提高催化反应效果的改善途径；结合微观反应动力学模型，提出金属掺杂不同位置锰氧化物分子筛上VOCs催化反应机理；通过积碳物质检测分析，考察不同反应条件下催化剂积碳分布情况，获得锰氧化物分子筛催化剂积碳机理，并建立良好的催化剂体系。以上为建立锰氧化物分子筛催化剂在喷涂行业VOCs治理领域提供必要的理论基础和研究经验。

研究基于锰氧化物分子筛的制备和VOCs催化氧化机理。主要内容包括：金属氧化物负载锰氧化物分子筛的制备及催化性能；不同形貌锰氧化物分子筛对催化性能的影响；制备方法对锰氧化物分子筛催化性能的影响；高活性VOCs氧化技术；VOCs催化氧化机理。项目全面系统地对锰氧化物催化剂催化氧化VOCs进行了探讨，为工业应用上进一步提高VOCs催化氧化活性，降低成本提供了一定的理论依据和实际方法。