02322nas a2200313   4500008004100000022001400041245010700055210006900162260011000231300001400341490000700355520118000362653002901542653001401571653002301585653002001608653001801628653002201646653001601668653002801684653003001712653002301742653001101765100002301776700001801799700002701817700003301844856013101877       2012                        eng d  a0376-471000aCarbon dioxide reforming of methane over ruthenium substituted strontium titanate perovskite catalysts0 aCarbon dioxide reforming of methane over ruthenium substituted s  aDR K S KRISHNAN MARG, PUSA CAMPUS, NEW DELHI 110 012, INDIAbNATL INST SCIENCE COMMUNICATION-NISCAIRcSEP  a1339-13470 v513 a<p>Strontium titanate (SrTiO3) doped with varying amounts of ruthenium (7.9, 15.6 and 31 wt%) have been prepared by the citrate gel synthesis method. Structural and textural characterizations reveal that at lower concentrations, a major part of Ru is incorporated in the lattice of SiTiO3. The content of surface Ru (outside lattice) increases with increasing amounts of the doped Ru. The surface Ru reduced at lower temperatures compared to Ru incorporated into the lattice. The reduction of the lattice substituted Ru occurs only at temperatures above the collapse of the perovskite structure. The catalyst sample with 7.9 wt% of Ru shows good conversions in the dry reforming of methane with CO2. The conversion of CO2 is in excess compared to methane under the studied reaction conditions. As a result, H-2/CO ratio of the product gases which should have been equivalent to unity is lower than the stoichiometric value. This ratio is particularly low when lower reaction temperatures (873-973 K) were used. Similar was the case when high space velocities were used. Low methane conversion and reverse water gas shift reaction are the causes for the low H-2/CO ratios.</p>10aCarbon dioxide reforming10aCatalysts10aCitrate gel method10aDoped catalysts10aDry reforming10aMethane reforming10aPerovskites10aReverse water gas shift10aRuthenium doped catalysts10aStrontium titanate10aSyngas1 aGurav, Hanmant, R.1 aBobade, Richa1 aDas, Vineetha, Lakshmi1 aChilukuri, Satyanarayana, V.  uhttps://library.ncl.res.in/content/carbon-dioxide-reforming-methane-over-ruthenium-substituted-strontium-titanate-perovskite-0