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OALib Journal期刊
ISSN: 2333-9721
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核-壳结构pd-co3o4@sio2催化剂的低浓度甲烷催化燃烧性能
, PP. 1120-1127
Keywords: pd-co3o4@sio2,低浓度甲烷,催化燃烧,核-壳结构,热稳定性,自组装法
Abstract:
？用自组装法制备了一种具有核–壳结构的pd-co3o4@sio2催化剂,对其低浓度甲烷催化燃烧性能进行了研究。tem、xrd、h2-tpr表征及催化活性测试结果表明,sio2壳内的pdo与coox之间的强相互作用,使得pd-co3o4@sio2对低浓度甲烷燃烧具有优异的催化活性。同时,与负载型pd/co3o4-sio2及pd/co3o4@sio2催化剂相比,核-壳型pd-co3o4@sio2催化剂经800℃煅烧后仍能保持较好的核-壳结构,有效地避免了pd和co活性物种的高温烧结,因而具有更高的热稳定性。
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