Webn Reagent employed for the splitting or hydrolysis of oils and fats, and made by the interaction of sulfuric acid, oleic acid and naphthalene. Web402. Twitchell Process. E. Twitchell, US 601603; US 628503 (1898); DE 365522; DE 385074. Commercial process for splitting fats to glycerol and fatty acids by heating the sulfuric-acid-washed fat 20-48 hours in an open tank with steam in a mixture of 25-50% water, 0.5% sulfuric acid and 0.75-1.25% Twitchell reagent (sulfonated petroleum products):
A Twitchell Reagent Revival: Biodiesel Generation from Low Cost …
Web(Kallyanpur et al., 1967a). In presence of Twitchell reagent, rate of castor oil hydrolysis was much lower than those of other oils (Majid et al., 1980). 1.2.5.2 High pressure splitting In an earlier work (Kallyanpur et al., 1967b), non-catalytic high-pressure splitting of hydrogenated castor oil was studied at temperatures 225, 250, and 300 °C. WebA Twitchell Reagent Revival: Biodiesel Generation from Low Cost Oils. Á. L. F. D. Arriba, L. Simón, Victoria Alcázar, J. Cuéllar, Patricia Lozano-Martinez, J ... SummaryVelocity constants of the Twitchell hydrolysis have been calculated from recently published experimental data and found to increase approximately twofold for a 10°C. rise ... the hushed willow
twitchell reagent - Academic Dictionaries and Encyclopedias
WebA typical Twitchell process is as follows: Fat and its half amount of water are taken in a wooden, lead-lined vat. Then, 1–2% sulfuric acid and 0.75–1.25% Twitchell reagent (sulfonated mixtures of oleic or other fatty acids and naphthalene) are added as catalysts. WebPreheating to 150°C. reduces the efficiency of the old type of Twitchell catalyst but does not affect the “Kontakt” reagent. The increasing of the temperatures from 100°C. to 150°C. … WebTwitchell Process; Twitchell Process E. Twitchell, US 601603; US 628503 (1898); DE 365522; DE 385074. Commercial process for splitting fats to and fatty acids by heating the sulfuric-acid-washed fat 20-48 hours in an open tank with steam in a mixture of 25-50% water, 0.5% sulfuric acid and 0.75-1.25% Twitchell reagent (sulfonated petroleum products): the hushed willow hudson ma