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环境化学  2015 

碳纳米管负载的镍及其氧化物对高毒气体PH3的催化分解性能

Keywords: 金属镍,氧化镍,碳纳米管,金属磷化物,磷化氢催化分解

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Abstract:

采用沉积-沉淀法制备了均一负载于碳纳米管(CNTs)载体的金属Ni和NiO,将其应用于PH3催化分解反应.通过XRD、TEM、XPS、BET等一系列检测手段,对样品的相结构、形貌、组分和比表面积进行了表征.研究结果表明,反应过程中,Ni和NiO很快被磷化为高活性的金属磷化物NiP2,作为反应的活性相.在420℃温度下,两样品对PH3的催化分解率均可达到99.5%以上.将反应中原位生成的NiP2进行催化反应,较钝化-还原的处理方式更有利于样品催化性能的保持.

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