Ultrasound assisted PTC catalyzed saponification of vegetable oils using aqueous alkali.
A few vegetable oils were saponified using aqueous KOH and different PTCs at room temperature in the presence of ultrasound. The extent of saponification was studied using the saponification value as a reference. Optimizations of various parameters such as time, selection of PTC, quantity of PTC, quantity of KOH and quantity of water were carried out using soyabean oil as a sample oil under sonication with stirring. To study the effect of ultrasound, the saponification was also carried out at 35 +/- 2 degrees C under different conditions, namely stirring, sonication, stirring and sonication, and heating at 100 degrees C. It was found that the heterogeneous liquid-liquid phase saponification of different vegetable oils using aq. KOH/CTAB was remarkably accelerated at 35 +/- 2 degrees C in the presence of ultrasound along with stirring.
Organic Chemistry Laboratory, Chemistry Division, University Department of Chemical Technology, N.M. Parikh Marg, Matunga, Mumbai-400019, India.
B S
BS
Bhatkhande
S D
SD
Samant
D002384:Catalysis; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry; D006878:Hydroxides / Q000737:chemistry; D010938:Plant Oils / Q000737:chemistry*; D011092:Polyethylene Glycols / Q000737:chemistry; D017680:Potassium Compounds / Q000737:chemistry; D000644:Quaternary Ammonium Compounds / Q000737:chemistry; D012967:Sodium Dodecyl Sulfate / Q000737:chemistry; D013024:Soybean Oil / Q000737:chemistry; D013696:Temperature; D014465:Ultrasonics; D014867:Water
D002593:Cetrimonium Compounds; D006878:Hydroxides; D010938:Plant Oils; D017680:Potassium Compounds; D000644:Quaternary Ammonium Compounds; D014867:Water; D012967:Sodium Dodecyl Sulfate; D011092:Polyethylene Glycols; D013024:Soybean Oil; C009405:tetrabutylammonium; C029943:potassium hydroxide; D000077286:Cetrimonium