کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1282685 | 1497593 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: A synthesis method for cobalt doped carbon aerogels with high surface area and their hydrogen storage properties A synthesis method for cobalt doped carbon aerogels with high surface area and their hydrogen storage properties](/preview/png/1282685.png)
Carbon aerogels doped with nanoscaled Co particles were prepared by first coating activated carbon aerogels using a wet-thin layer coating process. The resulting metal-doped carbon aerogels had a higher surface area (∼1667 m2 g−1) and larger micropore volume (∼0.6 cm3 g−1) than metal-doped carbon aerogels synthesised using other methods suggesting their usefulness in catalytic applications. The hydrogen adsorption behaviour of cobalt doped carbon aerogel was evaluated, displaying a high ∼4.38 wt.% H2 uptake under 4.6 MPa at −196 °C. The hydrogen uptake capacity with respect to unit surface area was greater than for pure carbon aerogel and resulted in ∼1.3 H2 (wt. %) per 500 m2 g−1. However, the total hydrogen uptake was slightly reduced as compared to pure carbon aerogel due to a small reduction in surface area associated with cobalt doping. The improved adsorption per unit surface area suggests that there is a stronger interaction between the hydrogen molecules and the cobalt doped carbon aerogel than for pure carbon aerogel.
Journal: International Journal of Hydrogen Energy - Volume 35, Issue 24, December 2010, Pages 13242–13246