Catalytic application of niobium compounds

被引:332
作者
Tanabe, K
机构
[1] 14-11 Sonomachi, Oasa, Ebetsu-shi, Hokkaido 069-0851, Japan
关键词
niobium compounds; catalytic application;
D O I
10.1016/S0920-5861(02)00343-7
中图分类号
O69 [应用化学];
学科分类号
081704 ;
摘要
Salient examples of catalytic application of niobium compounds and materials are demonstrated. Niobium oxides, when small amounts are added to known catalysts, markedly enhance catalytic activity and selectivity and prolong catalyst life for various reactions. Moreover, niobium oxides exhibit a pronounced effect as supports of metal or metal oxide catalysts. Hydrated niobium pentoxide (niobic acid, Nb2O5.nH(2)O) and niobium phosphate which are unusual solid acids show high catalytic activity, selectivity, and stability for acid-catalyzed reactions. Layer compounds containing niobium combined with metal show peculiar photocatalytic activity. These characteristic features of niobium compounds as catalysts and catalyst components are discussed, their potential significance being emphasized. (C) 2002 Kozo Tanabe. Published by Elsevier Science B.V. All rights reserved.
引用
收藏
页码:65 / 77
页数:13
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