کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1419764 986064 2006 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of feedstock and process conditions on the synthesis of high purity CNTs from aromatic hydrocarbons
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
The effect of feedstock and process conditions on the synthesis of high purity CNTs from aromatic hydrocarbons
چکیده انگلیسی

High purity multi-walled carbon nanotubes were synthesized from aromatic hydrocarbons (benzene, toluene, xylene and trimethyl benzene) using ferrocene as the source of Fe catalyst. Screening studies of aromatic feeds at 675 °C, residence time of 14 s and Fe/C atom ratio of 1.07%, resulted in feedstock carbon conversion of 20–31%, CNT yield of 19.8–30.5%, and catalyst yield of 5.3–8.3 (g CNT/g catalyst). While the quality of the CNTs as determined by TGA, SEM, TEM and Raman spectroscopy, were high and comparable for different feedstocks; their carbon conversion, CNT yield and catalyst yield differed noticeably. A process optimization study for toluene feed showed that carbon conversion of more than 39%, CNT yield of 38.7% and catalyst yield of 18.3 can be achieved at temperature of 800 °C, Fe/C atom ratio of 0.47%, and residence time of 10–20 s.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 44, Issue 11, September 2006, Pages 2236–2245
نویسندگان
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