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Oxychlorination of methane over FeOx/CeO2 catalysts.
- Source :
- Korean Journal of Chemical Engineering; Nov2018, Vol. 35 Issue 11, p2185-2190, 6p
- Publication Year :
- 2018
-
Abstract
- Methane activation through oxychlorination is in the spotlight due to the relatively mild reaction conditions at atmospheric pressure and in the temperature range of 450-550 °C. Although CO<subscript>2</subscript> is known to exhibit good activity for methane oxychlorination, significant amounts of by-products such as CO<subscript>2</subscript>, CO and carbon deposits are produced during the reaction over CO<subscript>2</subscript>. We investigated the effect of iron in FeO<subscript>x</subscript>/CO<subscript>2</subscript> catalysts on methane oxychlorination. FeO<subscript>x</subscript>/CO<subscript>2</subscript> with 3 wt% iron shows the maximum yield at 510 °C with 23% conversion of methane and 65% selectivity of chloromethane. XRD and H<subscript>2</subscript> TPR results indicate that iron-cerium solid solution was formed, resulting in the production of more easily reduced cerium oxide and the suppression of catalysts sintering during the reaction. Furthermore, the selectivity of by-products decreased more significantly over FeO<subscript>x</subscript>/CO<subscript>2</subscript> than cerium oxide, which can be attributed to the facilitation of HCl oxidation arising from the enhanced reducibility of the former sample. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02561115
- Volume :
- 35
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Korean Journal of Chemical Engineering
- Publication Type :
- Academic Journal
- Accession number :
- 132730349
- Full Text :
- https://doi.org/10.1007/s11814-018-0135-4