کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10394995 | 888967 | 2011 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
One-step production of biodiesel from Jatropha oil with high-acid value in ionic liquids
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Catalytic conversion of un-pretreated Jatropha oil with high-acid value (13.8 mg KOH/g) to biodiesel was studied in ionic liquids (ILs) with metal chlorides. Several commercial ILs were used to catalyze the esterification of oleic acid. It was found that 1-butyl-3-methylimidazolium tosylate ([BMIm][CH3SO3]; a Brønsted acidic IL) had the highest catalytic activity with 93% esterification rate for oleic acid at 140 °C but only 12% biodiesel yield at 120 °C. When FeCl3 was added to [BMIm][CH3SO3], a maximum biodiesel yield of 99.7% was achieved at 120 °C. Because metal ions in ILs supplied Lewis acidic sites, and more of the sites could be provided by trivalent metallic ions than those of bivalent ones. It was also found that the catalytic activity with bivalent metallic ions increased with atomic radius. Mixture of [BMIm][CH3SO3] and FeCl3 was easily separated from products for reuse to avoid producing pollutants.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioresource Technology - Volume 102, Issue 11, June 2011, Pages 6469-6472
Journal: Bioresource Technology - Volume 102, Issue 11, June 2011, Pages 6469-6472
نویسندگان
Feng Guo, Zhen Fang, Xiao-Fei Tian, Yun-Duo Long, Li-Qun Jiang,