کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1415028 | 985923 | 2012 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Molecular hydrogen and spiltover hydrogen storage on high surface area carbon sorbents
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی (عمومی)
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چکیده انگلیسی
A series of templated carbons with various high surface areas (2033-3798Â m2/g) have been prepared using various microporous zeolites as hard templates. Molecular hydrogen storage and spiltover hydrogen storage on these templated carbons were investigated and compared with superactivated carbon AX-21 and other reported porous carbon sorbents at 298Â K and 100Â atm. Two relationships between the surface areas of these carbons and their hydrogen capacities were obtained. The relationship between molecular hydrogen capacity and surface area showed a 0.23Â wt.% H2/1000Â m2/g of carbon sorbent at 298Â K and 100Â atm, indicating that merely increasing surface areas of the carbon sorbents cannot achieve a significant molecular hydrogen capacity at ambient temperature. Spiltover hydrogen storage was achieved by doping Pt nanoparticles (as dissociative hydrogen source) on these carbons (spiltover hydrogen receptor). Our first result on the relationship between the spiltover hydrogen capacity and surface area showed 0.4Â wt.% H2/1000Â m2/g of carbon sorbent at 298Â K and 100Â atm, which indicated that storage via spillover can lead to an average of 70% enhancement compared to molecular hydrogen storage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbon - Volume 50, Issue 9, August 2012, Pages 3134-3140
Journal: Carbon - Volume 50, Issue 9, August 2012, Pages 3134-3140
نویسندگان
Lifeng Wang, Ralph T. Yang,