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OALib Journal期刊
ISSN: 2333-9721
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纳米pd催化剂的制备及其催化苯酚加氢反应
DOI: 10.3969/j.issn.1671-7627.2014.05.002, PP. 7-11
Keywords: pd,多孔离子共聚物,苯酚,环己酮
Abstract:
采用浸渍法制备多孔离子共聚物(picp)负载的纳米pd催化剂(pd/picp),考察pd/picp对苯酚选择性加氢反应的催化性能。通过透射电子显微镜(tem)、x线衍射仪(xrd)和n2吸附-脱附分析仪等对催化剂进行表征,同时考察催化剂载体、反应溶剂和反应时间对苯酚加氢反应活性的影响。结果表明:pd/picp催化剂pd颗粒粒径为2nm左右,具有较大的比表面(635m2/g)和孔体积(1.41ml/g),在苯酚的还原反应中表现出较高的活性和选择性。在0.1mpah2下,n(pd):n(苯酚)=1:200,反应温度353k,反应10h,苯酚的转化率达到99%,环己酮的选择性达到97%,同时催化剂反复使用5次活性几乎没有降低。
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