Syntesis Glicerol Mono Oleate by Sulfated Titania Aerogel Catalyst

Abstract

Glycerol mono oleic (GMO) is a kind of non ionic surfactant, its appearance is light yellow liquid, and it is soluble in a hot alcohol solurion, also soluble in chloroform and ether. It also can form emulsion in the water - oil mixed and also as an emulsifier in food. GMO can be obtained from esterification of glycerol and oleic acid, by using solid acid catalyst to form mono glycerin ester. Solid acid catalyst sulfated titania (T~O~-SO~') aerogel has been prepared through one-step synthesis by the sol-gel method using sulfuric acid followed by the one-step C02 supercritical extraction. Highly porous aerogel with a large surface area (469m21g) and high porosity (pore volume 1.6cm3/g) has been obtained. The anatase phase isstable after calcination at temperatures up to 700°C, and the specific surface area, total pore volume and average pore diameter of anatase phase do not change significantly afler calcination at 600°C. Thermally stable and highly acidic sulfated titania aerogel is attractive as catalyst. The catalytic activity of the sulfated anatase shows ability for application as a catalyst for etherification reaction of oleic acid (C1aH3402) with glycerol (C3H,03) to produce glycerol mono oleate.