INFLUENCES OF COPPER ON PHYSICOCHEMICAL AND CATALYTIC PROPERTIES OF ZSM-5 ZEOLITES IN THE REACTION OF ETHENE AROMATIZATION

被引：17

作者：

ARISHTIROVA, K

DIMITROV, C

DYREK, K

HALLMEIER, KH

POPOVA, Z

WITKOWSKI, S

机构：

[1] JAGIELLONIAN UNIV,FAC CHEM,PL-30060 KRAKOW,POLAND

[2] UNIV SO MAINE,FAC CHEM,PORTLAND,ME 04103

来源：

APPLIED CATALYSIS A-GENERAL | 1992年 / 81卷 / 01期

关键词：

AROMATIZATION; COPPER; ETHENE; ZEOLITES; ZSM-5;

D O I：

10.1016/0926-860X(92)80257-D

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Copper-containing ZSM-5 zeolites were used as catalysts for ethene aromatization. Physico-chemical properties of the catalysts were studied by means of electron paramagnetic resonance (EPR), electron spectroscopy for chemical analysis (ESCA), and electron microscopy. ESCA spectra show that the surface layer of fresh catalysts is enriched in aluminium whereas copper distribution is nearly uniform. The addition of copper enhances activity and yield in the aromatization reaction. This fact and the changes in the chemical state and distribution of copper after catalytic experiments, regeneration and reduction lead to the conclusion that copper plays an important role in the studied reaction.

引用

页码：15 / 26

页数：12

共 16 条

[1]

Chu P., 1978, Aromatization of ethane, Patent No. [US4120910, 4120910]

[2] ELECTRON-SPIN RESONANCE OF COPPER-EXCHANGED Y ZEOLITES .1. BEHAVIOR OF THE CATION DURING DEHYDRATION [J].