STUDY OF TEMPERATURE-PROGRAMMED DESORPTION OF TERT-BUTYLAMINE TO MEASURE THE SURFACE-ACIDITY OF SOLID CATALYSTS

被引：22

作者：

AGUAYO, AT ^{[1
]}

ARANDES, JM ^{[1
]}

OLAZAR, M ^{[1
]}

BILBAO, J ^{[1
]}

机构：

[1] UNIV BASQUE COUNTRY, DEPT INGN QUIM, APARTADO 644, E-48080 BILBAO, SPAIN

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1990年 / 29卷 / 08期

关键词：

Butenes - Isomerization - Catalysts - Supported - Chromatographic Analysis - Gas - Surfaces - Measurements - Zeolites - Surfaces;

D O I：

10.1021/ie00104a007

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The technique of temperature-programmed desorption of tert-butylamine is described to measure the surface acidity of solid catalysts. The use of this base has advantages over the use of ammonia, pyridine, and n-butylamine. The desorption measurement is carried out by two methods, gas chromatography and thermogravimetry, and the advised conditions are described for both methods. Catalysts of Si02/Al203, bifunctionals of Ni-SiO2/Al2O3, and a commercial cracking zeolite have been studied. A comparison of the desorption results with those of the other acidity measurement techniques (such as titration with n-butylamine in the liquid phase and kinetic measurement of isomerization of n-butenes as the test reaction) allows the acidity measured with tert-butylamine desorption to be classified as strong, corresponding to the active sites in most of the reactions among the hydrocarbon compounds catalyzed by acids. © 1990, American Chemical Society. All rights reserved.

引用

页码：1621 / 1626

页数：6

共 21 条

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