Determination of Ca/NaY zeolite acidity by TG and DSC

被引：7

作者：

Araujo, AS

Fernandes, VJ

Fernandes, GJT

机构：

[1] UFRN,Dept. Química

来源：

JOURNAL OF THERMAL ANALYSIS | 1997年 / 49卷 / 01期

关键词：

acid solid catalyst; Ca/Na zeolite; heterogeneous catalysis;

D O I：

10.1007/BF01987484

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The acid properties of the Ca/NaY zeolite were investigated by means of n-butylamine desorption and thermal decomposition, using both thermogravimetry (TG) and differential scanning calorimetry (DSC). The total acidity of the zeolite was calculated from the TG data, while DSC was used with the Borchardt-Daniels kinetic model to determine the relative acid strength of the catalyst, given in J per acid site. The enthalpies of these processes are proportional to the acid site strength in each specific temperature range.

引用

页码：567 / 572

页数：6

共 15 条

[1] EVALUATION OF THE RELATIVE ACID STRENGTH OF CERIUM AND CALCIUM EXCHANGED Y-ZEOLITE BY TG AND DSC [J].