Journal
APPLIED CATALYSIS B-ENVIRONMENTAL
Volume 184, Issue -, Pages 299-308Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.apcatb.2015.11.040
Keywords
Rhodium; Fe(OH)(x); CO; Preferential oxidation; H-2
Funding
- National Natural Science Foundation of China [21076211, 21173218, 21203181, 21576251]
Ask authors/readers for more resources
A novel catalyst formulation of 3.1 wt.% Rh/Fe(OH)(x) was prepared via a co-precipitation method and investigated for CO preferential oxidation in H-2-rich stream. This catalyst exhibited a wider temperature range of 20-70 degrees C for CO total removal and better resistance to CO2 and H2O compared with the standard gold catalyst, standing out as the best Rh-based catalyst ever. The Rh species were highly dispersed in a subnano scale of similar to 1 nm and improved the reducibility of Fe(OH)(x) support. The adsorption of o(2) was thus promoted over the reduced support, together with the weakened CO adsorption over the Rh clusters, permitting a non-competitive Langmuir-Hinshelwood mechanism through the elementary reaction of CO(ad) + O-(ad). The reaction rate equation of r= k[CO](0.73)[O-2](0.64) and small apparent activation energy of 24 kJ mol(-1) were then derived from the kinetic studies. (C) 2015 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available