FORMATION AND REACTIVITY OF ZR3+ CENTERS AT THE SURFACE OF VACUUM-ACTIVATED MONOCLINIC ZIRCONIA

被引：147

作者：

MORTERRA, C

GIAMELLO, E

ORIO, L

VOLANTE, M

机构：

[1] Dipartimento di Chimica Inorganica, Chimica Fisica e Chimica dei Materiali, Università di Torino, I-10125 Torino

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1990年 / 94卷 / 07期

关键词：

D O I：

10.1021/j100370a067

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

CO adsorption at room temperature, followed by means of in situ FTIR spectroscopy, and EPR spectroscopy have been used to demonstrate the formation, by vacuum thermal activation, of coordinatively unsaturated (cus) Zr3+ centers at the surface of monoclinic ZrO2. The same techniques have also been adopted for a preliminary characterization of the reactivity of (cus) Zr3+ centers: they turn out to be highly resistant to oxidation by molecular oxygen, whereas they interact with water and with carbon dioxide, yielding more easily coordinatively saturated configurations, still reduced, rather than undergoing oxidation to the 4+ state. © 1990 American Chemical Society.

引用

页码：3111 / 3116

页数：6

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