OALib Journal期刊
活化非晶Fe_(80)Zr_(12)B_8合金的表面状态与催化活性
, PP. 60-66
Keywords: 非晶Fe_(80)Zr_(12)B_8 ,表面状态 ,催化活性
Abstract:
采用Auger电子能谱(AES),X射线光电子能谱(XPS)及扫描Auger探针(SAM)等分析手段,并结合氩离子轰击剥层对非晶Fe_(80)Zr_(12)B_8合金条带的表层成分分布、元素化学状态及表面形貌进行了研究。实验结果表明原始条带的贴辊侧和自由侧表面均为一层铁的氧化物覆盖。经活化后,条带两侧表面均发生了组元B的显著富集和氧化,出现了α-Fe微细晶粒,近表层发生了B和Zr的选择氧化,形成了多孔的表面结构,比表面积从原始条带的0.11m~2/g增加到了2.68m~2/g。对原位活化的主要机制进行了分析
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