Characterization and dehydrogenation activity of Pt/Nb2O5 catalysts

被引：44

作者：

Aranda, DAG

Ramos, ALD

Passos, FB

Schmal, M

机构：

[1] UNIV FED RIO DE JANEIRO, NUCAT, COPPE EQ, BR-21941 RIO DE JANEIRO, BRAZIL

[2] UNIV FED FLUMINENSE, DEPT ENGN QUIM, BR-24210240 NITEROI, RJ, BRAZIL

来源：

CATALYSIS TODAY | 1996年 / 28卷 / 1-2期

关键词：

Pt/Nb2O5; catalysts; dehydrogenation activity;

D O I：

10.1016/0920-5861(95)00217-0

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Pt/Nb2O5 catalysts were prepared with different loadings of Pt and characterized by TPR, DRS, H-2 and CO chemisorption and H-2/O-2 titration. Higher metal content catalysts presented an increasing SMSI effect related to a lower adsorption capacity. The Pt blocking by NbOx species causes the formation of new interfacial active sites. After a high temperature reduction, the catalysts were highly selective towards dehydrogenation products and total inactive for hydrogenolysis in the case of n-heptane conversion.

引用

页码：119 / 125

页数：7

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