کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7722566 1497523 2013 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Microstructure regulation of super activated carbon from biomass source corncob with enhanced hydrogen uptake
ترجمه فارسی عنوان
تنظیم میکروارگانیسم کربن سوپر فعال از ذرات منبع زیست توده با افزایش جذب هیدروژن
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی
A series of super activated carbon have been prepared by potassium hydroxide activation of corncob. The as-obtained samples were characterized by SEM, TEM and N2-sorption. The results show morphologies and textural of activated carbon are highly depended on the activation temperature, heating rate, whereas the activation time is not a key factor. Morphologies and porous structure of activated carbons can be regulated by adjusting preparation parameters. A super activated carbon with BET surface area of 3530 m2/g and total pore volume of 1.94 cm3/g is obtained. However, the other activated carbon with smaller pore size exhibited the highest hydrogen uptake capacities exceeding 2.85 wt% at −196 °C and 1.0 bar, whose BET surface area is only 2988 m2/g. The correlation investigations show the micropore volume between 0.65 nm and 1.5 nm can be more important than BET surface area and total pore volume for hydrogen uptakes at −196 °C. The present results indicate that the corncob-derived activated carbons can be promising materials for hydrogen storage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 38, Issue 22, 26 July 2013, Pages 9243-9250
نویسندگان
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