PREPARATION AND CATALYTIC PROPERTIES OF A NEW SIO2-ATTACHED NB-DIMER CATALYST - REGULATION OF ACIDITY BASICITY BY THE NUMBER OF METAL ATOMS IN SURFACE-ACTIVE SITES

被引：20

作者：

ICHIKUNI, N ^{[1
]}

ASAKURA, K ^{[1
]}

IWASAWA, Y ^{[1
]}

机构：

[1] UNIV TOKYO,FAC SCI,DEPT CHEM,BUNKYO KU,TOKYO 113,JAPAN

来源：

JOURNAL OF THE CHEMICAL SOCIETY-CHEMICAL COMMUNICATIONS | 1991年 / 02期

关键词：

D O I：

10.1039/c39910000112

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

New Nb dimers on an SiO2 surface, prepared from the reaction between [Nb(eta-5-C5H5)H-mu-(eta-5, eta-1-C5H4)]2 and surface OH groups, are found to have an oxygen-bridged dimeric structure, as characterised by extended X-ray fine structure (EXAFS), which is active and selective for the dehydration of ethanol in contrast to the dehydrogenation ability of the Nb monomer catalyst.

引用

页码：112 / 113

页数：2

共 10 条

[1]

Gates B.C., 1986, METAL CLUSTERS CATAL

[2] STRUCTURE OF DIMER OF NIOBOCENE [J].