郭建光,李忠,奚红霞,何莼

• 1:华南理工大学化工与能源学院传热强化与过程节能教育部重点实验室
• 2:华南理工大学化工与能源学院传热强化与过程节能教育部重点实验室
• 3:华南理工大学化工与能源学院传热强化与过程节能教育部重点实验室
• 4:华南理工大学化工与能源学院传热强化与过程节能教育部重点实验室 广东广州510640

摘要(Abstract)：

对在超声场下制备得到的CuO/γ-Al2O3催化剂与常规的浸渍法制备的CuO/γ-Al2O3催化剂进行了对比研究,分别进行催化氧化(燃烧)销毁甲苯和苯的实验,并用SEM,XRD,TPR和XPS对所制备的催化剂进行表征。研究结果表明:使用超声场下制备得到的CuO/γ-Al2O3作为催化剂的活性明显高于普通浸渍法制备得到的CuO/γ-Al2O3催化剂的活性。SEM分析表明,在超声场下制备的CuO/γ-Al2O3催化剂表面上的CuO晶体颗粒较小,且分布均匀;XRD分析表明超声促进了活性组分铜在表面的分散,CuO在催化剂表面由晶体向高分散的非晶相型转变。TPR分析表明在超声场下制备的CuO/γ-Al2O3催化剂中活性组分铜还原的途径从Cu(Ⅱ)还原到Cu(Ⅰ),再从Cu(Ⅰ)还原到金属铜,这有助于增强催化剂中Cu的还原性;XPS表征分析显示,在超声场下制备的CuO/γ-Al2O3催化剂与用普通浸渍法制得的CuO/γ-Al2O3相比,Cu2p3/2的结合能由934.2eV变到933.1eV,在催化剂表面呈现出Cu2+和Cu+的混合形式。

关键词(KeyWords)： 超声场;催化剂;催化燃烧;挥发性有机物

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金重点项目(20336020);; 教育部博士点基金(20020561010)。

作者(Author): 郭建光,李忠,奚红霞,何莼

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