Rhodium catalysts on SiO2, TiO2, and SiO2-TiO2 for the reforming of methane with carbon dioxide

The surface characteristics of SiO2, TiO2, and SiO2-TiO2 supported monometallic rhodium catalysts and their catalytic performance for the carbon dioxide reforming of methane were studied. The catalysts were prepared by incipient wetness impregnation and the supports by sol-gel methods. The catalysts were characterized by H-2 chemisorption, TPRH2, XRD, TOF-SIMS, and TOC methods. Silica-titania supported rhodium catalysts appeared to be highly active in the reforming of CH4 with CO2. The addition of titania led to a considerable decrease in carbon deposit accumulation on the Rh/support catalyst surface.