کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8108665 | 1522244 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Comparison of the first stage of the thermal decomposition of Polish coals by diffuse reflectance infrared spectroscopy
ترجمه فارسی عنوان
مقایسه مرحله اول تجزیه حرارتی زغال سنگ لهستانی با طیف سنجی مادون قرمز بازتاب
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
مهندسی انرژی و فناوری های برق
چکیده انگلیسی
Diffuse reflectance Fourier transform infrared spectroscopy was applied to study the decomposition of hard and brown coal during mild pyrolysis. The pyrolysis of investigated samples was conducted with a heating rate of 10Â K/min up to 673Â K under ambient pressure and a nitrogen flow of 4Â L/h. Curve-fitting analysis was employed to characterise the coal structures evolving in temperatures ranging from 323 to 673Â K. This study gives the information about the degradation of hydrogen bonds and oxygen structure. The comparison of the calculated structural parameters shows that bonds assigned to Car in hard coal are more stable at the investigated temperature range than the bonds in brown coal. The same phenomenon was observed for the CH bonds in aromatic formations. It was noted that during the pyrolysis the first changes in the structural parameters of lignite are visible at temperatures above 423Â K and in case of hard coal above 473Â K.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of the Energy Institute - Volume 91, Issue 2, April 2018, Pages 240-250
Journal: Journal of the Energy Institute - Volume 91, Issue 2, April 2018, Pages 240-250
نویسندگان
Michalina Kotyczka-MoraÅska, Martyna Tomaszewicz,