Study of metal coverage on alumina from group-6 metal carbonyl precursors

被引：9

作者：

Baibich, IM ^{[1
]}

Stedile, FC ^{[1
]}

Baumvol, IJR ^{[1
]}

dosSantos, JHZ ^{[1
]}

Santarosa, VE ^{[1
]}

机构：

[1] UNIV FED RIO GRANDE SUL,INST FIS,BR-91501970 PORTO ALEGRE,RS,BRAZIL

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1995年 / 192卷 / 02期

关键词：

D O I：

10.1002/pssb.2221920220

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The metal loading on alumina surfaces from group-6 metal (Cr, Mo, W) carbonyls and their derivatives is determined by Rutherford backscattering spectroscopy. The subcarbonyl species are generated by photochemical activation and monitored by Fourier transform-infrared spectroscopy. No chemical adsorption takes place for the three systems studied. Nevertheless, in the presence of the ligand triphenylphosphine (PPh(3)) and the assistance of UV radiation, surface species chemically bonded to gamma-Al2O3 can be observed, achieving a maximum metal loading of 0.3% in the case of Cr and 0.4% in the case of W.

引用

页码：519 / 526

页数：8

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