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《Biomass Chemical Engineering》 2009-03
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Study on the Effect of Maleic Anhydride-α-olefin Copolymers and Their Esters on Biodiesel Pour Point Depression

CHEN Xu-tang,YU Shai-cheng,ZHU Zhi-hua(School of Chemical Engineering,East China University of Science and Technology,Shanghai 200337,China)  
The maleic anhydride-α-olefin copolymers and their esters were prepared from maleic anhydride,α-C12-18 olefins and C12-18 alcohols by binary polymerization and alcoholysis.The copolymers and their esters were employed as pour point depressant to improve the low-temperature fluidity of biodiesel.The effects of prepared pour point depressants on the pour point of palm oil biodiesel,before and after diluted by anhydrous ethanol and 0# diesel,were evaluated.In addition,the pour point depression effects of prepared pour point depressants were verified when applied to reduce the pour point of soybean oil biodiesel.The results indicated that: when the mass fraction of anhydrous ethanol and 0# diesel in palm oil biodiesel was 40 % and 80 %,adding 3 % prepared pour point depressants,the pour point reduced by 8 ℃and 25 ℃,respectively;by adding of 0.5 % prepared pour point depressants into soybean oil biodiesel,the pour point reduced by 15 ℃.
【CateGory Index】: TE667
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