Effect of flash calcined alumina support and potassium doping on the activity of Co–Mo catalysts in sour gas shift process

doi:10.1016/j.apcata.2012.02.028

Effect of flash calcined alumina support and potassium doping on the activity of Co–Mo catalysts in sour gas shift process

Communities & Collections

pcg.skipToMenu

Effect of flash calcined alumina support and potassium doping on the activity of Co–Mo catalysts in sour gas shift process

View Usage Statistics

Bibliographic description

punktacja MEiN [2012 A]: 35

title:	Effect of flash calcined alumina support and potassium doping on the activity of Co–Mo catalysts in sour gas shift process
author:	Antoniak Katarzyna, Kowalik Paweł, Próchniak Wiesław, Konkol Marcin, Wach Anna , Kuśtrowski Piotr , Ryczkowski Janusz
journal title:	Applied Catalysis. A, General
volume:	423-424
date of publication :	2012
pages:	114-120
ISSN:	0926-860X
eISSN:	1873-3875
DOI:	10.1016/j.apcata.2012.02.028
language:	English
journal language:	English
abstract in English:	Potassium promoted Co-Mo catalysts supported on flash-calcined alumina for sour WGS process have been prepared. The oxide form of samples has been characterized by ICP-OES method, N_{2} adsorption, temperature-programmed reduction (TPR) and the sulfides form after the catalytic activity test by means of XPS. Catalytic activity measurements were carried out in gradientless reactor in a kinetic region at low partial pressure of reagents. A strong effect of the promoter addition sequence to the support has been observed. The highest activity in the WGS process was determined for the potassium promoted Co-Mo/Al_{2}O_{3} catalyst with a K/Mo ratio of 0.06 obtained by a simultaneous impregnation of flash-calcined alumina with aqueous solution of K and Mo salts. Potassium addition significantly changes reducibility and decreases total surface area of catalysts. XPS results show that the catalyst activity is correlated with the surface concentration of Mo^5^+ and Co-Mo-S species. Potassium addition enhances the formation of such species. The method of potassium incorporation to the catalyst has been suggested and its optimal content has been determined. The catalyst obtained can be implemented in industrial processes of hydrogen and syngas production from feedstocks with high sulfur content.
keywords in English:	water gas shift reaction, potassium promoter, sulfur tolerant catalysts, Co–Mo catalysts, flash calcined alumina
departmental parameterization:	35
affiliation:	Wydział Chemii : Zakład Technologii Chemicznej
type:	journal article
subtype:	academic paper

Files in this item

Files	Size	Format	View
There are no files associated with this item.

This item appears in the following Collection(s)

Publikacje naukowe