马洪玺²,何双荣^1,2,杨座国¹

• 1:华东理工大学 化工学院，上海 200237
• 2:上海蓝科石化环保科技股份有限公司，上海 201204

摘要(Abstract)：

采用浸渍法制备了不同负载量的蜂窝陶瓷Pt基、泡沫金属Pt基和La_0.8Sr_0.2MnO₃催化剂，通过XRD、SEM等对催化剂进行了表征，考察了3类催化剂在不同反应条件下对油烟催化净化性能的影响。结果表明，La_0.8Sr_0.2MnO₃催化剂的活性随反应温度的升高和负载量的增加而提高，随油烟气流量的增加而降低；蜂窝陶瓷Pt基催化剂和泡沫金属Pt基催化剂的变化相似，但Pt负载量对这两类催化剂活性的影响并不明显；在低空速下， La_0.8Sr_0.2MnO₃催化剂具有与蜂窝陶瓷Pt基催化剂以及泡沫金属Pt基催化剂相同的活性；但当空速大于10 000 h^-1以后，蜂窝陶瓷Pt基和泡沫金属Pt基催化剂的活性明显优于La_0.8Sr_0.2MnO₃催化剂。3类催化剂中，负载量为0.88%的泡沫金属Pt基催化剂对油烟的净化效率最佳，在350℃、流量为3 L·min^-1、空速为36 000 h^-1时，对油烟气的脱除率接近100%。另外，对泡沫金属Pt基催化剂催化氧化净化油烟气的表观动力学进行了研究。

关键词(KeyWords)： 油烟气;催化燃烧;动力学;贵金属催化剂

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 马洪玺²,何双荣^1,2,杨座国¹

DOI: 10.3969/j.issn.1003-9015.2019.01.030

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