کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6475238 1424967 2017 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of crystal of Fe2O3 in magnetism and activity of nanoparticle CaO@Fe2O3 for biodiesel production
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Influence of crystal of Fe2O3 in magnetism and activity of nanoparticle CaO@Fe2O3 for biodiesel production
چکیده انگلیسی


- A magnetic, acid-resistent, reusable alkaline catalyst synthesized.
- Ca2Fe2O5 formed was beneficial for biodiesel production.
- Magnetic CaO@γ-Fe2O3 performed high activity in four different transesterifications.
- KNO3 was the key to change the crystal of Fe2O3.

Two different crystals of Fe2O3 prepared with and without KNO3 were respectively used as magnetic cores for supporting CaO, which were designated as CaO@γ-Fe2O3 and CaO@ hematite Fe2O3. The comparison of catalytic performance of both catalysts was studied by transesterification of soybean oil and methanol. The differences of two catalysts samples in the aspects of morphology, magnetism and basicity were investigated by XRD, SEM, CO2-TPD and VSM spectroscopy. CaO@γ-Fe2O3 with the yield of 98.8% performed higher catalytic activity than CaO@ hematite Fe2O3 due to better stereo properties, stronger magnetic properties and stronger basicity. In addition, CaO@γ-Fe2O3 catalyst also performed better acid-resistance and recyclability, which represented a highly efficient alkaline heterogeneous catalyst for its universally application.

150

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 197, 1 June 2017, Pages 343-347
نویسندگان
, , , , ,