Production of biodiesel from waste cooking oil using mesoporous MgO-SnO2 nanocomposite

Abstract Mesoporous, bifunctional MgO-SnO 2 nanocatalysts with enhanced surface area are used for producing biodiesel from waste cooking oil. Biodiesel yield of 80% is achieved within the first 20 min when transesterification carried out at an optimum condition 18:1 methanol to oil ratio, wt% nanocatalyst, and a reaction temperature 60 °C. The conversion gives maximum 88% allowed continue 120 min. in this work dominated linoleic acid oleic acid, which during gets converted into methyl linoleate 9-octadecenoic ester. These fabricated using composite rutile (tetragonal) phase SnO cubic MgO nanostructures prominent crystal orientation along [211] [200] plane respectively. nanocomposites 31 m /g, basic sites mmol/g, particle size ~15 nm synthesized by novel sequential thermal decomposition sol-gel technique. wide band gap have Mg Sn ratio 15:1 do not any impurity phases as observed X-ray diffraction pattern EDS spectrum. presence oxygen states 2+ 4+ oxidative responsible catalytic activity recyclability displayed composites. This signifies role their synthesis conditions improving rate transesterification. metal oxide nontoxic, stable, cost effective, easier promising catalysts large-scale biodiesel.