PREPARATION AND CHARACTERIZATION OF CEO2 UNDER AN OXIDIZING ATMOSPHERE - THERMAL-ANALYSIS, XPS, AND EPR STUDY

被引：207

作者：

ABIAAD, E

BECHARA, R

GRIMBLOT, J

ABOUKAIS, A

机构：

[1] Laboratorie de Catalyse Hétérogène et Homogène, U.R.A. C.N.R.S. No. 402, Université des Sciences et Technologies de Lille

来源：

CHEMISTRY OF MATERIALS | 1993年 / 5卷 / 06期

关键词：

D O I：

10.1021/cm00030a013

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：

Cerium hydroxide samples prepared with different precipitating agents (NaOH, KOH, NH4-OH) have been studied by thermogravimetry, X-ray photoelectron spectroscopy (XPS), and electron paramagnetic resonance (EPR). The untreated samples are a mixture of CeO2 and Ce(OH)4 with a small quantity of Ce(OH)3 present in the bulk of the solid. A part of the Ce3+ species remains stable even after calcination at high temperatures (1073 K) under air. The residual alkali elements issuing from the precipitating agents induce variations on the final state of the solid.

引用

页码：793 / 797

页数：5

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