ISOTHERMS OF CHEMICAL ADSORPTION OF BASES ON SOLID CATALYSTS FOR ACIDITY MEASUREMENT

被引：52

作者：

AGUAYO, AT

GAYUBO, AG

ERENA, J

OLAZAR, M

ARANDES, JM

BILBAO, J

机构：

[1] Departmento de Ingeniería Química, Universidad Del País Vasco, Bilbao, 48080

来源：

JOURNAL OF CHEMICAL TECHNOLOGY AND BIOTECHNOLOGY | 1994年 / 60卷 / 02期

关键词：

CATALYSTS ACIDITY; ACIDIC STRENGTH DISTRIBUTION; BASES ADSORPTION; CALORIMETRY; THERMOGRAVIMETRY;

D O I：

10.1002/jctb.280600205

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

The measurement of the adsorption equilibrium constants of the bases and the total mass of base adsorbed at 200-degrees-C are proposed as reproducible indices of average acidity strength and of total acidity of the solid, respectively. The adsorption of different bases (ammonia, n-butylamine, tert-butylamine, pyridine) in gas phase on solid acidic catalysts (silica-lumina and zeolite catalysts and a silica gel) has been studied, by applying the calorimetric method in flow regime through an isothermal bed of solid. Both the conditions under which the adsorption is exclusively chemical as well as those under which the adsorption is not limited by the internal diffusion of the base have been determined. For these acidity measurements tert-butylamine behaves well and is an alternative base to ammonia.

引用

页码：141 / 146

页数：6

共 15 条

[1] OPTIMIZATION OF THE PREPARATION OF A CATALYST UNDER DEACTIVATION .1. CONTROL OF ITS KINETIC-BEHAVIOR BY ELECTING THE PREPARATION CONDITIONS [J].