Abstract
The Ru/Al 2O 3 catalysts modified with metal oxide (K 2OandLa 2O 3) were prepared via incipient wetness impregnation method from RuCl 3·nH 2O mixed with nitrate loading on Al 2O 3 support. The activity of catalysts was evaluated under simulative conditions for the preferential oxidation of CO (CO-PROX) from the hydrogen-rich gas streams produced by reforming gas, and the performances of catalysts were investigated by XRD and TPR. The results showed that the activity temperature of the modified catalysts Ru-K 2O/Al 2O 3 and Ru-La 2O 3/Al 2O 3 were lowered approximately 30 °C compared with pure Ru/Al 2O 3, and the activity temperature range was widened. The conversion of CO on Ru-K 2O/Al 2O 3 and Ru-La 2O 3/Al 2O 3 was above 99% at 140–160 °C, suitable to remove CO in a hydrogen-rich gas and the selectivity of Ru-La 2O 3/Al 2O 3 was higher than that of Ru-K 2O/Al 2O 3 in the active temperature range. Slight methanation reaction was detected at 220 °C and above.
Sign-in/Register to access full text options 
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 callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
