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制备方法对MgAl水滑石衍生氧化物负载钯催化剂丙烷完全氧化活性的影响

Keywords: ,水滑石,浸渍法,沉积沉淀法,共沉淀法,丙烷氧化

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Abstract:

以沉积沉淀法(DP)、浸渍法(IM)和共沉淀法(CP)制备MgAl水滑石衍生氧化物负载钯催化剂,用ICP、XRD、SEM、TEM、EDS、TPR以及比表面测定等手段对催化剂进行了表征。ICP和XRD数据表明用上述3种方法均可成功制备水滑石为前体载钯催化剂。SEM、TEM、EDS数据表明不同方法制备的样品具有不同的形貌以及钯在其中的分散度。综合各类表征数据可知Pd在催化剂中暴露的活性位是影响其活性的主要因素。

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