INFLUENCE OF STRUCTURE AND ACIDITY-BASICITY OF ZEOLITES ON PLATINUM SUPPORTED CATALYSTS OF N-C6 AROMATIZATION

被引：42

作者：

DONG, JL ^{[1
]}

ZHU, JH ^{[1
]}

XU, QH ^{[1
]}

机构：

[1] NANJING UNIV,DEPT CHEM,NANJING 210008,PEOPLES R CHINA

来源：

APPLIED CATALYSIS A-GENERAL | 1994年 / 112卷 / 02期

基金：

中国国家自然科学基金;

关键词：

HEXANE AROMATIZATION; ISOPROPANOL DECOMPOSITION; PLATINUM ZEOLITE; ZEOLITES;

D O I：

10.1016/0926-860X(94)80212-2

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：

L, Y zeolites were used as carrier to support Pt, and the catalytic properties of the supported Pt catalysts in n-hexane aromatization were investigated. The pore system of L zeolite proved to be beneficial for Pt clusters, exhibiting a high benzene selectivity in n-hexane aromatization. The secondary pores of zeolite L had a negative influence on the aromatization over Pt/BaKL. With these secondary pores blocked, the 0.4% Pt/BaKL-1 sample could keep up with the excellent aromatization properties of 0.6% Pt/BaKL zeolite. Pt dispersed on KL basic zeolite exhibited dehydrogenation activity in isopropanol decomposition. Pt supported on NH4L acidic zeolite enhanced the conversion of isopropanol to form water and propene. IR results of linear CO adsorbed on Pt/L zeolites suggested the Pt on NH4L acidic zeolite was ''electron deficient'', and Pt on KL basic zeolite exhibited some electron excess, which results from the interaction of Pt and zeolites with different acidic-basic properties.

引用

页码：105 / 115

页数：11

共 17 条

[1] RING ENLARGEMENT AND RING-OPENING OVER MONOFUNCTIONAL AND BIFUNCTIONAL CATALYSTS [J].