ROLE OF SULFUR IN CATALYTIC REFORMING OF HYDROCARBONS ON PLATINUM-RHENIUM ALUMINA

被引：10

作者：

BICKLE, GM ^{[1
]}

BELTRAMINI, JN ^{[1
]}

DO, DD ^{[1
]}

机构：

[1] UNIV QUEENSLAND,DEPT CHEM ENGN,ST LUCIA,QLD 4067,AUSTRALIA

来源：

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 1990年 / 29卷 / 09期

关键词：

D O I：

10.1021/ie00105a010

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Cyclohexane reforming and n-heptane reforming were studied on 0.3-0.3% Pt-Re/Al2O3-0.95% Cl catalyst in the presence of sulfur. The combined effect of Re-S and Pt-Si(Siis the irreversible form of platinum) that modified the platinum ensemble size and the electronic interactions caused the hydrogenolysis and dehydrocyclization activities to decrease. The presence of reversible sulfur (Sr) is explained in terms of the equilibrium between hydrogen sulfide and adsorbed Sr. Due to the added effect of Re-S decreasing the ensemble size, the fewer “available” free Pt crystallites on Pt-Re/Al2O3compared to Pt/Al2O3means the toxicity of Srwas greater for the bimetallic catalysts. The model previously proposed for sulfided Pt/Al2O3can be extended to Pt-Re/Al2O3after taking into consideration the additional effect of ensembling due to Re-S. Spillover of adsorbed hydrocarbon species to alumina during periods of high Srlevels has been proposed for Pt-Re/Al2O3. © 1990, American Chemical Society. All rights reserved.

引用

页码：1801 / 1807

页数：7

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