کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
63514 48222 2016 6 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Developing microporosity in Kevlar®-derived carbon fibers by CO2 activation for CO2 adsorption
ترجمه فارسی عنوان
در حال توسعه ریز در الیاف کربن Kevlar® مشتق با فعال CO2 برای جذب CO2
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI
فقط 3 هزار تومان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت
کلمات کلیدی
سمان؛ فعال سازی CO2. Kevlar®؛ الیاف کربن؛ جذب CO2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• CO2 activation preserved the fiber morphology of Kevlar®-derived carbon (KCF).
• CO2 activation of KCF is suitable for achieving high CO2 uptake at ambient conditions.
• KOH activation of KCF assures high benzene vapor uptake at ambient conditions.

A series of activated carbon fibers (CFs) has been prepared from Kevlar® by carbonization and subsequent CO2 activation. The resulting materials exhibited the specific surface areas in the range of 50–1240 m2/g, total pore volumes in the range of 0.02–0.61 cm3/g, and micropore volumes in the range of 0.02–0.54 cm3/g. The well–developed microporous structure resulted in very good CO2 adsorption properties; the best uptake was 6.58 mmol/g of CO2 (at 0 °C and p = 800 mmHg). The CO2 activated Kevlar®-derived CFs achieved better CO2 uptakes than analogous carbons activated in KOH, but the latter outperformed them in benzene adsorption. We concluded that almost exclusively ultramicroporous (w < 1 nm) CO2-activated CFs adsorbed more CO2 due to the presence of small micropores, whereas the KOH-activated carbons possessed larger micropores, which are essential for adsorption of benzene and related molecules. An additional advantage of the CO2 activated Kevlar®-derived CFs is the preservation of fiber morphology, which can be destroyed during KOH activation.

Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of CO2 Utilization - Volume 16, December 2016, Pages 17–22
نویسندگان
, , , , ,
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI
فقط 3 هزار تومان
سفارش ترجمه تخصصی
با تضمین قیمت و کیفیت