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کانمیت تهیه شده از خاکستر پوسته برنج به عنوان یک کاتالیزور بازی موثر، ارزان قیمت و قابل بازیافت برای تولید بیودیزل | ||
| شیمى کاربردى روز | ||
| مقاله 11، دوره 14، شماره 50، فروردین 1398، صفحه 155-166 اصل مقاله (1.2 M) | ||
| نوع مقاله: مقاله علمی پژوهشی | ||
| شناسه دیجیتال (DOI): 10.22075/chem.2019.14062.1370 | ||
| نویسندگان | ||
| ابوالفضل غفاری نظیفی1؛ مهدی بهزاد* 2 | ||
| 1دانشکده شیمی، دانشگاه سمنان | ||
| 2دانشکده شیمی، دانشگاه سمنان، سمنان، ایران | ||
| تاریخ دریافت: 01 اسفند 1396، تاریخ پذیرش: 21 اسفند 1397 | ||
| چکیده | ||
| در این پژوهش، کانمیت از خاکستر پوسته برنج تهیه شده، و به عنوان یک کاتالیزور ناهمگن بازی برای تولید بیودیزل از روغن آفتابگردان استفاده شد. خصوصیات کاتالیزور با استفاده از تکنیکهای PXRD، FESEM و FT-IR شناسایی گردید. پارامترهای موثر در واکنش ترانس استریفیکاسیون برای تولید بیودیزل از قبیل مقدار کاتالیزور، نسبت مولی متانول به روغن، زمان واکنش و دمای واکنش بهینه شد. تحت شرایط بهینه (% 5 وزنی کاتالیزور، نسبت مولی متانول: روغن 1:24، زمان واکنش 4 ساعت و دمای C° 65 ) درصد تبدیل به 2/97 رسید. همچنین کاتالیزور 5 بار بدون کاهش قابل توجه در درصد تبدیل، قابلیت بازیابی و استفاده مجدد را دارد. | ||
| کلیدواژهها | ||
| بیودیزل؛ ترانس استریفیکاسیون؛ خاکستر پوسته برنج؛ کانمیت | ||
| عنوان مقاله [English] | ||
| Kanemite from rice husk ash as an efficient, cheap and recoverable base catalyst for production of biodiesel | ||
| نویسندگان [English] | ||
| Abolfazl Ghaffari Nazifi1؛ Mahdi Behzad2 | ||
| 1department of chemistry,Semnan University | ||
| 2Department of chemistry, Semnan University, Semnan, Iran | ||
| چکیده [English] | ||
| In this work, Kanemite was prepared from rice husk ash and used as a heterogeneous base catalyst for production of biodiesel from sunflower oil. The catalyst was characterized by PXRD, FESEM and FT-IR. The transesterification conditions, such as the catalyst dosage, molar ratio of methanol to oil, reaction temperature and reaction time were investigated and optimized. The results revealed that by a catalyst loading of 5 wt. %, methanol to oil ratio of 24:1, reaction temperature of 65 °C and reaction time of 4h, conversion of biodiesel reached 97.2%. Moreover, the catalyst could be reused up to five cycles under the optimum reaction conditions without significant loss of product yield. | ||
| کلیدواژهها [English] | ||
| Biodiesel, transesterification, Rice husk ash, Kanemite | ||
| مراجع | ||
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