摘 要
挥发性有机化合物(VOCs)排放对环境和人类健康构成严重威胁，其治理已成为全球关注的焦点。本研究聚焦于VOCs排放控制技术中的催化氧化方法，旨在开发高效、经济且环境友好的VOCs处理工艺。通过系统分析现有VOCs治理技术的优缺点，发现传统燃烧法存在能耗高、二次污染等问题，而催化氧化技术凭借低温反应、高转化率等优势成为研究热点。本研究采用实验与理论相结合的方法，选取典型VOCs为研究对象，制备了多种金属氧化物催化剂并对其进行表征，探究了不同因素对催化性能的影响规律。结果表明，所制备的催化剂在较低温度下即可实现对VOCs的高效去除，其中Cu基催化剂表现出最佳活性，在180℃时甲苯转化率可达95%以上。此外，通过原位红外光谱等手段揭示了VOCs催化氧化反应机理，提出了表面氧物种在反应过程中起关键作用的新观点。
关键词：挥发性有机化合物 催化氧化 Cu基催化剂
Abstract
Volatile organic compounds (VOCs) emissions pose a serious threat to the environment and human health, and their governance has become the focus of global attention. This study focuses on the catalytic oxidation method in VOCs emission control technology, aiming to develop efficient, cost-effective and environmentally friendly VOCs treatment processes. Through the systematic analysis of the advantages and disadvantages of the existing VOCs treatment technology, it is found that the traditional combustion method has problems such as high energy consumption and secondary pollution, and the catalytic oxidation technology has become a research hotspot with the advantages of low temperature reaction and high conversion rate. In this study, we used the method of combining experiment and theory, selected typical VOCs as the research ob ject, prepared and characterized various me tal oxide catalysts, and explored the influence of different factors on catalytic performance. The results showed that the prepared catalyst achieved efficient removal of VOCs at lower temperatures, with the Cu based catalyst showed the best activity with toluene conversion of more than 95% at 180℃. In addition, the mechanism of VOCs catalytic oxidation was revealed by in-situ infrared spectroscopy, and a new view that surface oxygen species play a key role in the reaction process was proposed.
Keyword:Volatile Organic Compounds Catalytic Oxidation Cu-Based Catalysts
目 录
1绪论 1
1.1挥发性有机化合物排放控制背景 1
1.2研究意义与价值分析 1
1.3国内外研究现状综述 1
1.4本文研究方法概述 2
2挥发性有机化合物特性分析 2
2.1化学性质与分类 2
2.2来源与排放特征 3
2.3对环境和健康的影响 3
2.4排放标准与法规要求 4
3催化氧化技术原理及应用 4
3.1催化氧化反应机理 4
3.2催化剂种类与性能 5
3.3影响催化效率的因素 5
3.4工业应用案例分析 6
4控制技术优化与创新 6
4.1新型催化剂研发进展 6
4.2工艺流程改进措施 7
4.3经济效益与环境效益 7
4.4未来发展方向展望 8
结论 8
参考文献 10
致谢 11
挥发性有机化合物(VOCs)排放对环境和人类健康构成严重威胁，其治理已成为全球关注的焦点。本研究聚焦于VOCs排放控制技术中的催化氧化方法，旨在开发高效、经济且环境友好的VOCs处理工艺。通过系统分析现有VOCs治理技术的优缺点，发现传统燃烧法存在能耗高、二次污染等问题，而催化氧化技术凭借低温反应、高转化率等优势成为研究热点。本研究采用实验与理论相结合的方法，选取典型VOCs为研究对象，制备了多种金属氧化物催化剂并对其进行表征，探究了不同因素对催化性能的影响规律。结果表明，所制备的催化剂在较低温度下即可实现对VOCs的高效去除，其中Cu基催化剂表现出最佳活性，在180℃时甲苯转化率可达95%以上。此外，通过原位红外光谱等手段揭示了VOCs催化氧化反应机理，提出了表面氧物种在反应过程中起关键作用的新观点。
关键词：挥发性有机化合物 催化氧化 Cu基催化剂
Abstract
Volatile organic compounds (VOCs) emissions pose a serious threat to the environment and human health, and their governance has become the focus of global attention. This study focuses on the catalytic oxidation method in VOCs emission control technology, aiming to develop efficient, cost-effective and environmentally friendly VOCs treatment processes. Through the systematic analysis of the advantages and disadvantages of the existing VOCs treatment technology, it is found that the traditional combustion method has problems such as high energy consumption and secondary pollution, and the catalytic oxidation technology has become a research hotspot with the advantages of low temperature reaction and high conversion rate. In this study, we used the method of combining experiment and theory, selected typical VOCs as the research ob ject, prepared and characterized various me tal oxide catalysts, and explored the influence of different factors on catalytic performance. The results showed that the prepared catalyst achieved efficient removal of VOCs at lower temperatures, with the Cu based catalyst showed the best activity with toluene conversion of more than 95% at 180℃. In addition, the mechanism of VOCs catalytic oxidation was revealed by in-situ infrared spectroscopy, and a new view that surface oxygen species play a key role in the reaction process was proposed.
Keyword:Volatile Organic Compounds Catalytic Oxidation Cu-Based Catalysts
目 录
1绪论 1
1.1挥发性有机化合物排放控制背景 1
1.2研究意义与价值分析 1
1.3国内外研究现状综述 1
1.4本文研究方法概述 2
2挥发性有机化合物特性分析 2
2.1化学性质与分类 2
2.2来源与排放特征 3
2.3对环境和健康的影响 3
2.4排放标准与法规要求 4
3催化氧化技术原理及应用 4
3.1催化氧化反应机理 4
3.2催化剂种类与性能 5
3.3影响催化效率的因素 5
3.4工业应用案例分析 6
4控制技术优化与创新 6
4.1新型催化剂研发进展 6
4.2工艺流程改进措施 7
4.3经济效益与环境效益 7
4.4未来发展方向展望 8
结论 8
参考文献 10
致谢 11
