负载型铂催化剂催化氧化甲醛的研究进展

发布时间：2018-04-17 17:32

本文选题：甲醛 + 催化　；参考：《化工进展》2017年10期

【摘要】：建筑和装饰材料中缓慢释放的甲醛是一种主要的室内空气污染物,长期暴露在较低浓度的甲醛环境里会严重危害人类的身体健康。催化氧化法是一种非常有效的消除甲醛技术,能在较为温和的条件下将甲醛完全转化为二氧化碳和水。负载型铂催化剂对甲醛催化氧化反应表现出较为优异的催化性能,受到广泛研究和关注。本文综述了近年来该类催化剂的研究进展,主要探讨了制备方法、载体种类和形貌、添加助剂及反应条件参数等因素对负载型铂催化剂上甲醛催化氧化性能的影响;并归纳了一部分甲醛催化氧化的反应机理。分析认为:负载型铂催化剂在低温条件下具有很强的活化分子氧的能力,从而使其对甲醛低温催化氧化反应表现出很高的催化活性。另外还对负载型铂催化剂未来的研究发展方向进行了展望:应通过优化和改进催化剂制备方法和策略,提高铂原子的利用率,产生更多的表面/界面活性中心,继而进一步提高催化剂的性能;借助一些先进的表征技术如氧同位素示踪技术和理论计算的方法深入研究甲醛催化氧化反应机理等基础问题。
[Abstract]:The slow release of formaldehyde from building and decoration materials is a major indoor air pollutant, and long-term exposure to lower concentrations of formaldehyde will seriously harm human health.Catalytic oxidation is a very effective method to eliminate formaldehyde, which can completely convert formaldehyde to carbon dioxide and water under mild conditions.Supported platinum catalysts have shown excellent catalytic performance for the catalytic oxidation of formaldehyde, which has received extensive research and attention.In this paper, the research progress of this kind of catalysts in recent years is reviewed. The effects of preparation methods, kinds and morphology of supports, additives and reaction conditions on the catalytic oxidation of formaldehyde on supported platinum catalysts are discussed.The mechanism of catalytic oxidation of formaldehyde was also summarized.It is concluded that the supported platinum catalyst has a strong ability to activate molecular oxygen at low temperature, which makes the supported platinum catalyst exhibit high catalytic activity for the catalytic oxidation of formaldehyde at low temperature.In addition, the future research and development of supported platinum catalysts are prospected. Through optimizing and improving the preparation methods and strategies of the catalysts, the utilization rate of platinum atoms should be improved, and more surface / interface active centers should be generated.Some advanced characterization techniques such as oxygen isotope tracing and theoretical calculation were used to study the mechanism of catalytic oxidation of formaldehyde.
【作者单位】：吉林化工学院化工清洁生产技术吉林省高校重点实验室;中国石油吉林石化公司研究院;吉林化工学院化学与制药工程学院;
【分类号】：O643.32;TU834.8;X51

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