Characterisation of Co/Mg/Al2O3 high pressure partial oxidation catalysts

Citation
Mp. Makoa et al., Characterisation of Co/Mg/Al2O3 high pressure partial oxidation catalysts, CATAL TODAY, 49(1-3), 1999, pp. 11-16
Citations number
14
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
CATALYSIS TODAY
ISSN journal
09205861 → ACNP
Volume
49
Issue
1-3
Year of publication
1999
Pages
11 - 16
Database
ISI
SICI code
0920-5861(19990224)49:1-3<11:COCHPP>2.0.ZU;2-R
Abstract
Coprecipitated Co/Mg/Al2O3 catalysts were synthesised (Mg/Co/Al ratio 1:1:2 and 1:3:4) and characterised by TPR, TEM, XRD and BET. The materials catal ysed the partial oxidation of methane to CO and H-2 (1:2 ratio) at 20 bar p ressure (conversions of 75-95%). The catalyst deactivated with time on line (20% reduction in conversion in 150 min). BET analysis revealed that sinte ring of the catalyst occurred during the catalytic reaction. Further, large quantities of carbon were formed in the post bed part of the reactor. TEM analysis of the carbon revealed cobalt embedded carbon rods. (C) 1999 Elsev ier Science B.V. All rights reserved.