کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8046622 | 1519076 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effect of the chemical composition of smectites used in KF/Clay catalysts on soybean oil transesterification into methyl esters
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
ژئوشیمی و پترولوژی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effect of the chemical composition of smectites used in KF/Clay catalysts on soybean oil transesterification into methyl esters Effect of the chemical composition of smectites used in KF/Clay catalysts on soybean oil transesterification into methyl esters](/preview/png/8046622.png)
چکیده انگلیسی
Three smectites with distinct chemical compositions were treated with potassium fluoride and the catalysts thus obtained were used in the transesterification of soybean oil with methanol. The smectites and catalysts were examined by X-ray fluorescence spectroscopy (XRF), X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy with energy dispersive X-ray spectroscopy (SEM/EDS), and the BET gas adsorption method to verify if their chemical composition influences the properties of the resulting catalysts. An experimental design was applied to evaluate the effect of the variables of the transesterification reaction: temperature, mass ratio of the catalyst, and the molar ratio of oil to methanol. The results indicate that increasing the SiO2/Al2O3 ratio of the smectites causes an increase in the basicity of the catalysts, and hence, in the conversion rate into methyl esters.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Clay Science - Volume 102, December 2014, Pages 121-127
Journal: Applied Clay Science - Volume 102, December 2014, Pages 121-127
نویسندگان
L.C.A. Silva, E.A. Silva, M.R. Monteiro, C. Silva, J.G. Teleken, H.J. Alves,