TY - JOUR
T1 - Effect of rhodium traces on the reducibility of silica-supported iron particles
AU - Bonnefille, Eric
AU - Millet, Jean Marc M M
AU - Candy, Jean Pierre
AU - Thivolle-Cazat, Jean
AU - Bellabarba, Roñan M.
AU - Tooze, Robert P.
AU - Basset, Jean-Marie
N1 - KAUST Repository Item: Exported on 2020-10-01
PY - 2012/6/19
Y1 - 2012/6/19
N2 - Fe/SiO 2 and Rh-Fe/SiO 2 catalysts with increasing Fe/Rh ratio have been prepared and characterized by TEM, XRD, oxygen adsorption and Mössbauer spectroscopy. It was confirmed that Fe/SiO 2 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 ≤2,000) promoted the reduction of iron up to 85-95 %. This promoting effect also took place with a Fe/SiO 2 + Rh/SiO 2 physical mixture (Fe/Rh B2,000). Therefore, the occurrence of a hydrogen spillover effect may be involved in the observed process. © 2012 Springer Science+Business Media, LLC.
AB - Fe/SiO 2 and Rh-Fe/SiO 2 catalysts with increasing Fe/Rh ratio have been prepared and characterized by TEM, XRD, oxygen adsorption and Mössbauer spectroscopy. It was confirmed that Fe/SiO 2 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 ≤2,000) promoted the reduction of iron up to 85-95 %. This promoting effect also took place with a Fe/SiO 2 + Rh/SiO 2 physical mixture (Fe/Rh B2,000). Therefore, the occurrence of a hydrogen spillover effect may be involved in the observed process. © 2012 Springer Science+Business Media, LLC.
UR - http://hdl.handle.net/10754/565973
UR - http://link.springer.com/10.1007/s10562-012-0853-x
UR - http://www.scopus.com/inward/record.url?scp=84865432300&partnerID=8YFLogxK
U2 - 10.1007/s10562-012-0853-x
DO - 10.1007/s10562-012-0853-x
M3 - Article
SN - 1011-372X
VL - 142
SP - 984
EP - 990
JO - Catalysis Letters
JF - Catalysis Letters
IS - 8
ER -