Biniwale, Rajesh and Gosavi, Priti V (2012) Effective cleanup of CO in hydrogen by PROX over perovskite and mixed oxides. International Journal of Hydrogen energy, 37 (4). pp. 3958-3963. ISSN 0360-3199
PDF
- Published Version
Restricted to Registered users only Download (695Kb) | Request a copy |
Abstract
Preferential oxidation of CO (PROX-CO) from hydrogen has been carried out over various oxides and perovskite catalysts namely CeO2, CuLaO2eCeO2, La2CuO4. Further, effect of loading of a small quantity of Pt in catalysts 0.1 wt% Pt/CeO2, 0.1 wt% Pt/La2CuO4, 0.1 wt% Pt/CuLaO2eCeO2 was examined with respect to its activity for PROX-CO. In order to improve the surface area of La2CuO4 a chitosan complex method was used for synthesis. The catalysts were characterized using XRD, SEM and BET-SA techniques. Chitosan complex method results in pervoskite with pure phase, porous structure and higher surface area of 16.3 m2/g compared to that of 3.8 m2/g obtained by co-precipitation synthesis method. La2CuO4 exhibited a considerable activity for CO oxidation with conversion of 91.7%. Whereas, 0.1 wt% Pt/CuLaO2eCeO2 catalyst exhibited CO conversion of 94.1% and selectivity of 87.1% at reaction temperature of 320 �C. The improved CO/H2 selectivity may be attributed to the promotion of water gas shift reaction at the interface of Pt-metal oxide besides the relatively higher oxidation activity of the metal oxides. The catalysts reported in this study with relatively higher CO conversion and selectivity with lower value of l ¼ 0.3 exhibit potential for effective cleanup of hydrogen gas to remove CO for fuel cell applications.
Item Type: | Article |
---|---|
Uncontrolled Keywords: | Preferential CO Oxidation; Hydrogen Cleanup; Metal Oxides Pt Catalyst; Chitosan Complex Method; Lanthanum Cuprate Pperovskite |
Subjects: | Materials Science |
Divisions: | UNSPECIFIED |
Depositing User: | Dr. Rajesh Biniwale |
Date Deposited: | 11 Jan 2018 11:36 |
Last Modified: | 11 Jan 2018 11:36 |
URI: | http://neeri.csircentral.net/id/eprint/1094 |
Actions (login required)
View Item |