کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6768791 | 512477 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Potassium impregnated nanocrystalline mixed oxides of La and Mg as heterogeneous catalysts for transesterification
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
Potassium impregnated mixed oxides of lanthanum and magnesium in 1:1 to 1:5 atomic ratios were prepared by co-precipitation at a constant pH. These were characterized by FEG-SEM-EDX, TEM, Powder XRD, Hammett indicators and acid/base titration and, were evaluated as heterogeneous catalysts for transesterification of used cotton seed oil with methanol. The optimized reaction conditions for the catalyst, prepared at pH 10 using 1:3 atomic ratio of lanthanum and magnesium, were the use of 1:54 molar ratio of oil to methanol and 5 wt.% of the catalyst at 65 °C that resulted into 96% conversion to biodiesel within 20 min. The catalyst showed tolerance of 1 wt.% of moisture. Concentration of potassium ions leached out from catalyst into biodiesel was within permissible limit of ASTM.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 62, February 2014, Pages 226-233
Journal: Renewable Energy - Volume 62, February 2014, Pages 226-233
نویسندگان
Vishal Mutreja, Satnam Singh, Amjad Ali,