HYDROCONVERSION OF N-HEPTANE ON CATALYSTS CONTAINING PLATINUM, RHENIUM AND PLATINUM RHENIUM ON SODIUM MORDENITE

被引：10

作者：

ABOULGHEIT, AK ^{[1
]}

MENOUFY, MF ^{[1
]}

ELMORSI, AK ^{[1
]}

机构：

[1] EGYPTIAN PETR RES INST, CAIRO, EGYPT

来源：

APPLIED CATALYSIS | 1990年 / 61卷 / 02期

关键词：

acid sites; catalyst characterization (acidity); heptane hydroconversion; platinum-rhenium/modernite; platinum/mordenite; rhenium/mordenite; zeolites;

D O I：

10.1016/S0166-9834(00)82151-X

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：

On catalysts containing Pt, Re and Pt-Re on sodium mordenite (NaM), the hydroconversion of n-heptane was 61, 22 and 25 wt.-%, respectively, at 400°C, 3.0 MPa, F/W = 1.2 (vol. n-heptane (vol. catalyst)-1h-1) and a hydrogen-to-n-heptane molar ratio of 10:1. The production of heptane isomers was 38 wt.-% on Pt/NaM but < 1% on the others under these conditions. The total acidity and strength of acid sites were lowest for Pt/NaM and highest for Re/NaM, whereas the metal dispersion in NaM was highest for Pt/NaM and lowest for Pt-Re/NaM. The weaker acidic character, assisted by the presence of Na+ ions, combined with the higher dispersion of Pt in NaM appear to enhance the isomerization activity of the Pt/NaM catalyst and decrease the cracking activity. Diffusion limitation in the catalysts studied is significant. Linear compensation effect relationships for the overall reaction and hydrocracking on the catalysts studied were obtained. © 1990.

引用

页码：283 / 292

页数：10

共 21 条

[1]

Aboul-Gheit A.K., 1982, J CHEM TECH BIOTECHN, V32, P1000

[2]

ABOULGHEIT AK, 1987, J CHEM TECHNOL BIOT, V39, P37

[3] ACID SITE STRENGTH DISTRIBUTION IN MORDENITES BY DIFFERENTIAL SCANNING CALORIMETRY [J].