Sulfate-modified zirconia catalysts: The role of surface electrification on the features of the sulfate adsorption process

被引：2

作者：

Ardizzone, S

Grassi, E

机构：

[1] Dept. Phys. Chem. and Electrochem., University of Milan, Via Golgi 19

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1996年 / 417卷 / 1-2期

关键词：

sulfated zirconia; adsorption; catalyst; double layer;

D O I：

10.1016/S0022-0728(96)04724-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Determinations of the adsorption of sulfates at the ZrO2\solution interface have been performed at constant ionic strength (10(-2) M KNO3) and at two different pH values (isotherm 1, pH 4.5; isotherm 2, pH 2.6). In both cases the adsorption isotherms presented a langmuirian shape; parameters describing the adsorption were obtained by processing data in the reciprocal Langmuir coordinates. The degree of packing of the adsorbed molecules and the nature of the forces supporting the adsorption are also discussed on the basis of literature results.

引用

页码：193 / 195

页数：3

共 16 条

[1]

ANDERSON W, 1957, P 2 INT C SURF ACT L, V3, P45

[2] ACIDITY AND CATALYTIC ACTIVITY OF ZIRCONIUM AND TITANIUM SULFATES HEAT-TREATED AT HIGH-TEMPERATURE - SOLID SUPERACID CATALYSTS [J].