Abstract
A multilayer replication method has been used to prepare reticulated ceramic foams from steel making wastes. These ceramic sponges have been used as support for preparing catalytic devices, after deposition of catalytic coatings of Al 2O 3, CeO 2 and gold. The obtained catalytic systems are active to the CO oxidation reaction and may be stable with no loss of activity as far as the amount of residual water in the gaseous stream remains constant. In the absence of water and reaction temperatures of 150 °C the catalytic monolith shows 100% conversion of CO at least for 54 h. The metal content of the wastes has a positive influence in the activity of the foams. The best catalytic results are obtained for the Au/CeO 2-supported foams where the oxidation capability of gold atoms is combined with the redox properties of the ceria phase.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
