大豆油皂脚制备生物柴油的研究.pdf

Abstract Biodieselisanew of Callsubstitutethe type reproduciblefuel，which fuels．Biodieselismadeof acid esters．Inthis petroleum-diesel up fatty methyl thesis， biodieselwas acidand acidicoil synthesizedfatty using soapstock by lipase-catalysis、acid—catalysis、consecutivetwo—step-synthesis(acidcatalysis followedalkali methodandthe by catalysis)，respectively．Thepurification analysis methodofbiodieselweroalsostudied． in TheEsterificationof ofoleicacid esternon synthesis lipase—catalyzed methyl solvent wasfirststudied．Themolarratio Was acidtomethanol1：1． system offatty The of3Amolecularsievewas150 theamountof amount oleic egkg acid，and immobilizedWas oleieacid．Thereactionmixtureofoleicacidand lipase4．3∥kg methanolWasesterified诵m of at50℃for24hours．The vigorouslyshaking150rpm conversionsesterwere83．68％．The methodofthe Was ofmethyl purification product like theoleieacidKOHmethanolsolutionatroom this：neutralizingby temperature, theoleicacid esterWaSextractedhexaneandthe wastaken methyl by soap by to distilledwater．The Wasidentifiedbe