Solketal from Glycerol, Aceton, and Ethanol Solution using Woifram Acid Phosphotungistic Catalyst

Energy is a need of society and industry which increasing every year. However, the world's oil reserves continue to run low, so development renewable alternative energy needed. One new energies that can be developed vegetable fuel or biofuel. Biodiesel type biofuel being widely produced recently. The cetane number determines quality biodiesel. Solketal an additive added biodiesel increase number. ketonation reaction was used in this study obtain solketal. In manufacture solketal catalyst needed speed up conversion. Phosphotungstic Woifram Acid (PWA) heterogeneous chosen because it separated from solution. Based on results study, optimal time for making 4 hours highest conversion at temperature 60oC with constant reactant mole ratio 1:3:1 percentage 2% catalyst, 66.7%.