Sulfur as a Selectivity Modifier in a Highly Active Rh/Fe2O3/ZrO2 Catalyst for Water-Gas Shift

被引：1
|
作者：
Hakeem, Abrar A. [1 ]
Rajendran, Jaikishen [1 ]
Kapteijn, Freek [1 ]
Makkee, Michiel [1 ]
机构：
[1] Delft Univ Technol, Fac Sci Appl, Dept Chem Engn, NL-2628 BL Delft, Netherlands
来源：
CHEMCATCHEM | 2014年 / 6卷 / 08期
关键词：
iron; methane selectivity; rhodium; sulfur; sulfite; water-gas shift; KINETICS; CONVERSION; STEAM;
D O I：
10.1002/cctc.201402161
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 presence of small amounts of sulfur (< 500 ppm) on a Rh/Fe2O3/ZrO2 catalyst improves its water-gas shift (WGS) selectivity and stability under typical industrial conditions. Rh/Fe2O3/ZrO2 is a highly active WGS catalyst, but it produces small amounts of methane as a side product. The formation of methane is due to the presence of rhodium in the catalyst. Sulfur selectively poisons the site(s) responsible for methane formation. The improved selectivity and prolonged stability of the catalyst is maintained as long as sulfur is present.
引用
收藏
页码：2240 / 2243
页数：4
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