کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1558302 999277 2013 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A comparative study of the characteristics and carbonization behaviors of three modified coal tar pitches
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد شیمی مواد
پیش نمایش صفحه اول مقاله
A comparative study of the characteristics and carbonization behaviors of three modified coal tar pitches
چکیده انگلیسی
Coal tar pitch (CTP) was modified either with 10 g cinnamaldehyde (CMA) per 100 g CTP, 7 g p-toluene sulfonic acid (PTS) per 100g CTP, or a mixture of 10 g CMA and 7 g PTS per 100 g CTP. The parent CTP and the modified CTPs were characterized by Fourier transform infrared spectroscopy (FT-IR) and thermogravimetric analysis. The four samples were carbonized at different temperatures and the products were characterized by FT-IR and polarized-light microscopy. Results show that the modifications have a large influence on the characteristics and carbonization behavior of the CTP. The distillation of CMA occurs at a temperature lower than 300 °C during the carbonization of the CMA-modified CTP. Methyl and methylene groups of the parent CTP and the modified CTPs gradually disappear with increasing temperature during carbonization. The modification of the CTP with the mixture of CME and PTS results in a highest increase (5.08%) of carbonization yield and the most abundant mesophase sphere formation during carbonization.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: New Carbon Materials - Volume 28, Issue 2, April 2013, Pages 140-144
نویسندگان
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