ACIDITY OF THE EXTERNAL SURFACE OF MODIFIED PENTASIL CATALYSTS AND ITS RESISTANCE TO MECHANICAL TREATMENT

被引：1

作者：

PARENAGO, OO

LEBEDEVA, OE

IVANOVA, II

LUNINA, EV

机构：

[1] Moscow State University, Chemistry Department, Moscow

来源：

PURE AND APPLIED CHEMISTRY | 1993年 / 65卷 / 10期

关键词：

D O I：

10.1351/pac199365102205

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The influence of mechanical treatment on acidic and cata lytical properties of the external surface ZSM type zeolites by paramagnetic probe method was investigated. The zeolite external surafce was modified by covering with silica, orthophosphoric acid treatment and exchange of zeolite acidic protons to lithium ions. It was shown, that due to mechanical treatment the achieved changes in surface properties were destructed and the external surface was renovated.

引用

页码：2205 / 2208

页数：4

共 8 条

[1]

COURDIER G, 1982, J CHEM SOC CHEM COMM, V24, P1413

[2] SYNTHESIS AND CHARACTERIZATION OF ZSM-5 TYPE ZEOLITES .1. PHYSICOCHEMICAL PROPERTIES OF PRECURSORS AND INTERMEDIATES [J].