Influence of gallium on the properties of Pt-Re/Al2O3 naphtha reforming catalysts

被引：16

作者：

Vicerich, Maria A. ^{[1
]}

Especel, Catherine ^{[2
]}

Benitez, Viviana M. ^{[1
]}

Epron, Florence ^{[2
]}

Pieck, Carlos L. ^{[1
]}

机构：

[1] FIQ UNL, CONICET, INCAPE, RA-2654 Santiago Del Estero, Santa Fe, Argentina

[2] Univ Poitiers, CNRS, Catalyse Chim Organ Lab, UMR 6503, F-86022 Poitiers, France

来源：

APPLIED CATALYSIS A-GENERAL | 2011年 / 407卷 / 1-2期

关键词：

Naphtha reforming; Pt-Re-Ga/Al2O3; catalysts; TEMPERATURE-PROGRAMMED REDUCTION; TREATED PT-GAMMA-AL2O3 CATALYSTS; ALLOY FORMATION; N-HEXANE; PLATINUM; SURFACE; GA; DEHYDROGENATION; PT-RE-SN/GAMMA-AL2O3-CL; DEACTIVATION;

D O I：

10.1016/j.apcata.2011.08.022

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：

The influence of gal lium on the properties of Pt-Re/Al2O3 catalysts used in naphtha reforming was studied. The catalysts were prepared by the coimpregnation method. It was found that the addition of gallium to the Pt-Re/Al2O3 catalyst diminishes its acidity (Bronsted and Lewis). It also produces an inhibition of the metal function, i.e. dehydrogenation and hydrogenolysis activity. Activity tests for n-C-5 isomerization showed that gallium addition decreases the total activity of the Pt-Re catalyst but increases its selectivity to i-C-5 isomers. The selectivity to low value light gases (C-1-C-3) is particularly decreased. Catalytic tests for n-C-7 reforming showed that addition of gallium increases both catalyst stability and selectivity to aromatics, and decreases the production of light gases. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：49 / 55

页数：7

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