کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
209534 461673 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Catalytic decomposition of tar using iron supported biochar
ترجمه فارسی عنوان
تجزیه کاتالیستی قارچ با استفاده از آهن زراعی پشتیبانی شده
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
چکیده انگلیسی


• Iron supported biochar catalysts lowered the activation energy for toluene reforming by 47% (91 to 48 kJ/mole).
• Toluene decomposition activity was comparable to, or higher than olivine, or nickel supported catalysts.
• Benzene selectivity declined with increasing reaction temperature and never increased above 0.2 for the iron biochar.
• Long term catalytic activity (~4 days) resulted in a high toluene conversion (>90%) and lower benzene selectivity (<0.05).

Iron supported biochar catalysts were used to decompose toluene, a model tar compound, over a temperature range of 600–900 °C. Toluene conversion and decomposition rates increased linearly with increasing temperature and catalyst loading from 600 to 700 °C. Relative to biochar alone, the iron supported catalysts lowered the activation energy by 47% and decreased the formation of benzene, an intermediate in toluene decomposition. At 800 °C for the 13 and 18.7 wt.% iron loaded catalyst, toluene conversion approached 100% and benzene selectivity (SB) was zero, compared to an SB of 0.025% and 0.35% for 10% iron and the biochar, respectively. Time on stream studies with the 13 wt.% iron biochar catalyst, over the course of four days, resulted in a mean toluene conversion of 91% and benzene selectivity of 0.02%. These results indicate that inexpensive iron impregnated biochar catalysts could potentially be used to catalytically decompose tar molecules in syngas generated via biomass gasification.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel Processing Technology - Volume 130, February 2015, Pages 31–37
نویسندگان
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