Conversion of methane on catalysts obtained via self-propagating high-temperature synthesis
2013 (English)In: Catalysis in Industry, ISSN 2070-0504, Vol. 5, no 3, 245-252 p.Article in journal (Refereed) Published
Monolith metalloceramic catalysts for the selective oxidation of methane are prepared via self- propagating high-temperature synthesis (SHS) from NiO, ZrO2, MgO, Al, Ni and other powders. Catalytic tests of monolith samples are performed in a flow reactor at 800°C using a methane-air mixture (methane, 29.6 vol %). SHS catalysts are shown to attain the level of platinum and platinum/rhodium catalysts through the yield of syngas (CO + H2) and to surpass them in the case of Ni 52.9 ZrO2 9.5 composition. The latter is used as a catalyst to develop a pilot autothermal syngas generator with a capacity of 30 m3/h. Syngas is gen- erated via carbon dioxide methane conversion (CDMC) on SHS platinum-modified Ni3Al powder catalysts. The samples are tested in a flow fixed-bed reactor at a catalyst volume of 1 cm3, a grain size of 600-1000 μm, temperatures of 600-900°C, and a volumetric flow rate of 100 cm3/min (CH4 : CO2 : He = 20 : 20 : 60 vol %). The catalysts developed for converting natural gas into syngas are shown to be highly active and stable in a high-temperature redox medium. This work is the first step in the synthesis of dimethyl ether, which could compete successfully with diesel fuel.
Place, publisher, year, edition, pages
2013. Vol. 5, no 3, 245-252 p.
Carbon dioxide methane conversion, Catalysts, Selective methane oxidation, Self-propagating high-temperature synthesis, Syngas
IdentifiersURN: urn:nbn:se:kth:diva-144221DOI: 10.1134/S2070050413030094ScopusID: 2-s2.0-84892175463OAI: oai:DiVA.org:kth-144221DiVA: diva2:714601
QC 201404282014-04-282014-04-152014-04-28Bibliographically approved