Infrared characterization of group VIB metal carbonyls adsorbed on .gamma.-alumina
β Scribed by Zecchina, Adriano; Escalona Platero, Estrella; Otero Arean, Carlos
- Book ID
- 127050149
- Publisher
- American Chemical Society
- Year
- 1988
- Tongue
- English
- Weight
- 624 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0020-1669
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Tungsten and molybdenum were introduced in β₯-Al 2 O 3 and Pd/β₯-Al 2 O 3 using metalcarbonyls [W(CO) 6 and Mo(CO) 6 ] photoactivation. DRIFTS FT-IR spectra of the surfaces prior to thermal decomposition reveal the presence of unstable metalsubcarbonyl species, in contrast with the ones found previous
Infrared spectra of Cr(CO)6 adsorbed at different surface centers on gamma-alumina were investigated. The spectra of the probe complex revealed the existence of three types of strong Lewis centers and that of physisorbed Cr(CO)6. In the case of the physisorbed complex Oh symmetry was widely conserve