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Co掺杂OMS-2纳米纤维的合成研究
Authors
何凤林
周浩
+8 more
张建
李国政
杨杰
杨海健
王文领
王磊
田泱源
邱建华
Publication date
1 January 2017
Publisher
Abstract
以KMnO_4、MnSO_4、Co(NO_3)_2·6H_2O和H2_SO_4为反应原料,采用水热法合成了一系列掺杂过渡金属Co的氧化锰八面体分子筛(OMS-2),采用X-射线衍射、扫描电镜、红外光谱、低温氮气物理吸脱附和H_2程序升温还原对样品进行了表征,研究了Co的掺杂对OMS-2分子筛的结构、形貌和氧化还原性质等的影响,并对该系列催化剂进行了CO氧化性能评价。结果表明,掺杂Co并未改变OMS-2的晶体结构,并充分分散在OMS-2骨架结构中;掺杂Co的OMS-2分子筛的形貌发生了由纳米短棒向纳米纤维的转变。不仅如此,Co的掺杂增加了活性氧物种的移动性,改善了OMS-2分子筛的催化CO氧化性能
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Last time updated on 22/01/2018