Sour gas shift process over sulfided Co–Mo–K catalysts supported on carbon material - Support characterization and catalytic activity of catalysts
Katarzyna Antoniak-Jurak , Paweł Kowalik , Wiesław Próchniak , Wioletta Raróg-Pilecka , Piotr Kuśtrowski , Janusz Ryczkowski
AbstractThe possibility of porous structure improvement of commercial active carbon and its application as Co–Mo–K catalysts support for SGS (SGS — Sour Gas Shift) process has been investigated. Microporous activated carbon has been modified by thermal treatment at 1900 °C under helium atmosphere and then subjected to steam gasification in order to obtain supports with different textural properties. Supports have been characterized by used nitrogen physisorption, mercury porosimetry, thermogravimetry (TG), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM). Model samples of Co–Mo–K catalysts with the same content of Mo, Co and K (16 wt.% of MoO3 and 4 wt.% of CoO, and the promoter content expressed as K/month ratio was 0.1.) were prepared on modified carbon supports. Catalytic activity measurements were carried out in gradientless reactor in a kinetic region at low partial pressure of reagents. Through modification (in the controlled manner) of properties of carbon material it is possible to obtain good support for sour gas shift process. Simple relationship between surface area of the support and activity of the catalysts has been estimated. The highest activity in the SGS process was determined for the catalyst supported on NRO/1900/33.3. Carbon supported Co–Mo–K catalysts shown even twice higher activity compared to systems supported on flash calcined alumina.
|Journal series||Fuel Processing Technology, ISSN 0378-3820, (A 35 pkt)|
|Publication size in sheets||0.5|
|Keywords in English||sulfur-tolerant catalyst, sour water gas shift, carbon support, graphitized carbon material, coal gasification|
|Score|| = 40.0, 28-11-2017, ArticleFromJournal|
= 40.0, 28-11-2017, ArticleFromJournal
|Publication indicators||: 2015 = 3.847 (2) - 2015=3.949 (5)|
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