SULFUR ADSORPTION, DESORPTION AND EXCHANGE ON PLATINUM ALUMINA, RHENIUM ALUMINA AND PLATINUM RHENIUM ALUMINA CATALYSTS

被引：15
作者：
PONITZSCH, L
WILDE, M
TETENYI, P
DOBROVOLSZKY, M
PAAL, Z
机构：
[1] HUNGARIAN ACAD SCI,INST ISOTOPES,POB 77,H-1525 BUDAPEST,HUNGARY
[2] CENT INST ORGAN CHEM,DEPT BASIC ORGAN MAT,O-7050 LEIPZIG,GERMANY
来源：
APPLIED CATALYSIS A-GENERAL | 1992年 / 86卷 / 02期
基金：
匈牙利科学研究基金会;
关键词：
PLATINUM-RHENIUM ALUMINA; PLATINUM ALUMINA; RHENIUM ALUMINA; NORMAL-HEXANE AROMATIZATION; SULFUR DESORPTION; SULFUR ISOTOPIC EXCHANGE;
D O I：
10.1016/0926-860X(92)85142-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：
Sulphidation of a partially coked Pt-Re/Al2O3 catalyst results in a catalytic behaviour similar to that of a presulphided catalyst. Sulphur is able to displace coke from the metal surface. The amount of irreversibly chemisorbed sulphur - as determined by using (H2S)-S-35 for catalyst sulphidation - increases in the order: Pt/Al2O3 < Pt-Re/Al2O3 < Re/Al2O3. The reverse order was found for the exchange of S-35 with (H2S)-S-32. In Pt-Re-S/Al2O3, the dilution of platinum ensembles occurs to a greater extent and in a more rigid structure than in Pt-S/Al2O3.
引用
收藏
页码：115 / 125
页数：11
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