%0 Conference Paper
%F Oral 
%T Nanospace-Engineered Carbons for Reversible Storage of Natural Gas and Hydrogen
%+ Department of Physics and Astronomy [Columbia] (Mizzou Physics)
%+ Laboratoire Charles Coulomb (L2C)
%+ Matériaux divisés, interfaces, réactivité, électrochimie (MADIREL)
%+ Department of Chemical Engineering [Columbia]
%A Romanos, J.
%A Beckner, M.
%A Rash, T
%A Firlej, Lucyna
%A Kuchta, B
%A Yu, P.
%A Suppes, G.
%A Wexler, C
%A Pfeifer, P
%< avec comité de lecture
%Z L2C:11-433
%B ", International conference "Adsorption at the nanoscale - A new frontier in fundamental science an
%C Columbia, MO, United States
%8 2011-09-22
%D 2011
%Z Physics [physics]/Physics [physics]/Computational Physics [physics.comp-ph]
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Conference papers
%X Early results on optimization of gravim. excess adsorption for undoped carbons, with KOH activation: 1.Excess adsorption and gravimetric storage capacity both increase with increasing KOH:C ratio and activation temperature. Excess adsorption dominated by KOH:C ratio. 2.Volumetric storage capacity decreases with increasing activation temperature. 3. 2.5K activated at 700 oC has record volumetric storage capacity of 132 g CH4/liter carbon at 35 bar and 22 oC (200 V/V, 110% of DOE target of 118 g/liter). Has only micropores (< 2nm). Large surface area and low porosity is key to volumetric storage capacity. 4. 4K activated at 790 oC has record gravimetric storage capacity of 256 g CH4/kg carbon at 35 bar and 22 oC. Presence of mesopores raises gravimetric storage capacity. 5. Langmuir and Ono-Kondo analysis of CH4 excess isotherms at 295 K gives surface area (2400-2700 m2/g, agree with BET area), film thickness (~0.4 nm), saturated film density (320-440 g/cm3), and average binding energy (8-9 kJ/mol). 6.Briquetting can increase volumetric storage capacity by factor of 2 if surface area remains constant.
%G English
%L hal-00820620
%U https://hal.science/hal-00820620
%~ CNRS
%~ UNIV-AMU
%~ L2C
%~ INC-CNRS
%~ MADIREL
%~ MIPS
%~ UNIV-MONTPELLIER
%~ UM-2015-2021
%~ TEST2-HALCNRS