Abstract
Fe/SiO2 and Rh-Fe/SiO2 catalysts with increasing Fe/Rh ratio have been prepared and character- ized by TEM, XRD, oxygen adsorption and Mossbauer spectroscopy. It was confirmed that Fe/SiO2 catalysts cannot be reduced under hydrogen flow, to more than 50 % whatever the temperature in the 200-500 C range and shown that the presence of even a small amount of Rh (Fe/ Rh B2,000) promoted the reduction of iron up to 85-95 %. This promoting effect also took place with a Fe/ SiO2 ? Rh/SiO2 physical mixture (Fe/Rh B2,000). Therefore, the occurrence of a hydrogen spillover effect may be involved in the observed process.
Full Text 
Sign-in/Register to access full text options
Sign-in/Register to access full text options 
Paper version not known
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
