IR STUDY OF CO ADSORPTION AT SIMILAR-TO-77 K ON ALPHA-AL2O3

被引：24

作者：

MORTERRA, C

MAGNACCA, G

DELFAVERO, N

机构：

来源：

LANGMUIR | 1993年 / 9卷 / 03期

关键词：

D O I：

10.1021/la00027a004

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The low-temperature (approximately 77 K) adsorption of CO onto a low surface area microcrystalline specimen of alpha-Al2O3 has been studied by FTIR spectroscopy. CO uptake yields a broad complex absorption, in which (at least) two poorly resolved components are present, ascribed to the weak or-coordination onto coordinatively unsaturated Al ions in octahedral coordination, and to the interaction with surface OH groups. Though hardly observable in the nu(OH) spectral region, OH groups are still present also after activation at high temperatures, and are perturbed by CO uptake.

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页码：642 / 645

页数：4

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