MECHANISM OF REDUCTION OF RUTILE WITH HYDROGEN

被引：48

作者：

KHADER, MM ^{[1
]}

KHEIRI, FMN ^{[1
]}

ELANADOULI, BE ^{[1
]}

ATEYA, BG ^{[1
]}

机构：

[1] CAIRO UNIV,FAC SCI,DEPT CHEM,CAIRO,EGYPT

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1993年 / 97卷 / 22期

关键词：

D O I：

10.1021/j100124a048

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 mechanism of reduction of titanium dioxide (rutile) with hydrogen was studied in the temperature range of 300-500-degrees-C. The process of reduction was followed by measuring the electrical conductivity of sintered pellets. The variation of conductivity with the time of reduction was divided into three regions: (i) adsorption of hydrogen on the defects at shorter times; (ii) autocatalytic reduction of the O2- ions on the rutile surface at intermediate times; (iii) outward diffusion of oxygen within the rutile pellet at longer times.

引用

页码：6074 / 6077

页数：4

共 21 条

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