Ir-C xerogels synthesized by sol-gel method for NO reduction
Liu, Zhi; Wang, A; Wang, X; Zhang, Tao
| HERO ID | 1661188 |
|---|---|
| In Press | No |
| Year | 2008 |
| Title | Ir-C xerogels synthesized by sol-gel method for NO reduction |
| Authors | Liu, Zhi; Wang, A; Wang, X; Zhang, Tao |
| Journal | Catalysis Today |
| Volume | 137 |
| Issue | 2-4 |
| Page Numbers | 162-166 |
| Abstract | Iridium-carbon (Ir-C) xerogels were synthesized via a one-pot sol-gel polycondensation of hexachloroiridic acid, resorcinol and formaldehyde, followed by carbonization in a nitrogen atmosphere at 500-1000 degrees C. The samples were characterized by various techniques including N-2 adsorption, XRD and TEM. The N-2 adsorption showed that the Ir-C samples were of microporous structures, and their specific surface areas increased with the pyrolysis temperature. Both the XRD and TEM revealed that the It particles in the Ir-C samples were highly dispersed in the carbon matrix, in contrast with the large Ir particles in the Ir/C sample which was obtained by impregnation. The Ir-C xerogels exhibited high activities and selectivities towards N-2 in the reduction of NO with carbon or CO. In particular, the Ir-C samples behaved much stably than the Ir/C, demonstrating the superiority of the one-pot synthesis method. (C) 2008 Elsevier B.V. All rights reserved. |
| Doi | 10.1016/j.cattod.2008.03.004 |
| Wosid | WOS:000258990800004 |
| Is Certified Translation | No |
| Dupe Override | No |
| Comments | Source: Web of Science WOS:000258990800004 |
| Is Public | Yes |
| Keyword | carbon xerogels; iridium; NO reduction; carbon monoxide; sol-gel |