首页> 外文会议>Symposium on Recent Advances in Catalytic Materials December 2-4, 1997, Boston, Massachusetts, U.S.A. >New type of advanced catalytic material based upon alumina epitaxially grown onto thin alumina foil
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New type of advanced catalytic material based upon alumina epitaxially grown onto thin alumina foil

机译:基于外延生长在薄铝箔上的氧化铝的新型先进催化材料

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Formation of planar layered Al_2O_3/Al composites via aluminum foil anodic-spark oxidation was studied by using SEM and XRD. A lateral growth of the primary non-porous alumina islands was shown to proceed to an extent where the entire surface was covered, and this layer is responsible for determining the high thermal stability of composite. A washcoating by an alumina suspension substantially increases pore volume and water absorption capacity. Catalysts based on the platinum group metals and transition metal oxides exhibit high activity for the reactions of CO and hydrocarbon oxidations and the selective reduction of nitrogen oxides by hydrocarbons.
机译:利用SEM和XRD研究了铝箔阳极火花氧化形成平面层状Al_2O_3 / Al复合材料的过程。初级无孔氧化铝岛的横向生长显示达到覆盖整个表面的程度,该层负责确定复合材料的高热稳定性。用氧化铝悬浮液进行的修补基面涂层大大增加了孔体积和吸水能力。基于铂族金属和过渡金属氧化物的催化剂对CO和碳氢化合物氧化反应以及碳氢化合物选择性还原氮氧化物表现出高活性。

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