SULFATED ZIRCONIA CATALYSTS - THE CRYSTAL PHASES AND THEIR TRANSFORMATIONS

被引：82

作者：

SRINIVASAN, R

WATKINS, TR

HUBBARD, CR

DAVIS, BH

机构：

[1] UNIV KENTUCKY,CTR APPL ENERGY RES,LEXINGTON,KY 40511

[2] OAK RIDGE NATL LAB,HIGH TEMP MAT LAB,OAK RIDGE,TN 37831

来源：

CHEMISTRY OF MATERIALS | 1995年 / 7卷 / 04期

关键词：

D O I：

10.1021/cm00052a018

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：

The phase transformations of zirconia are an important factor that makes it a valuable material for numerous applications in ceramics. The factors triggering the onset of the phase transformation are controversial. Evidence is presented to show that surface sites that adsorb oxygen at low temperatures (298-500 K) are responsible for causing the tetragonal --> monoclinic transformation at low temperatures. The incorporation of sulfate covers these sites and inhibits the tetragonal --> monoclinic transformation.

引用

页码：725 / 730

页数：6

共 23 条

[1] ION-EXCHANGE AND THERMAL STUDIES OF SULFATED ZIRCONIA [J].