STABILITY OF NIOBIUM OXIDE CATALYST ACTIVITY EMERGING IN REDUCTIVE MEDIUM

被引：10

作者：

MORIKAWA, A

TOGASHI, A

机构：

[1] Department of Chemical Engineering, Tokyo Institute of Technology, Meguro-ku, Tokyo, 152

来源：

CATALYSIS TODAY | 1993年 / 16卷 / 3-4期

关键词：

D O I：

10.1016/0920-5861(93)80072-9

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Niobium oxide, Nb2O5, was activated by hydrogen reduction at high temperatures to be active for the dimerization and oligomerization of ethene. The thermal stability of the activity was improved by the preparation of mixed oxides with various tantalum contents. At the higher contents of tantalum, the resistance to the crystallization and to the isotope exchange of gaseous oxygen are increased. The preparation of mixed oxides with metals of larger metal-oxygen bond dissociation energy is promising for the high activity to be realized after a hydrogen reduction treatment or heat treatments.

引用

页码：333 / 339

页数：7

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