Journal ArticleDOI
Unified Approach to Pore Size Characterization of Microporous Carbonaceous Materials from N2, Ar, and CO2 Adsorption Isotherms†
TLDR
In this paper, a unified approach to pore size characterization of microporous carbonaceous materials such as activated carbon and carbon fibers by nitrogen, argon, and carbon dioxide adsorption at standard temperatures, 77 K for N2 and Ar and 273 K for CO2, was presented.Abstract:
We present a unified approach to pore size characterization of microporous carbonaceous materials such as activated carbon and carbon fibers by nitrogen, argon, and carbon dioxide adsorption at standard temperatures, 77 K for N2 and Ar and 273 K for CO2. Reference isotherms of N2, Ar, and CO2 in a series of model slit-shaped carbon pores in the range from 0.3 to 36 nm have been calculated from the nonlocal density functional theory (NLDFT) using validated parameters of intermolecular interactions. Carbon dioxide isotherms have also been generated by the grand canonical Monte Carlo (GCMC) method based on the 3-center model of Harris and Yung. The validation of model parameters includes three steps: (1) prediction of vapor−liquid equilibrium data in the bulk system, (2) prediction of adsorption isotherm on graphite surface, (3) comparison of the NLDFT adsorption isotherms in pores to those of GCMC simulations, performed with the parameters of fluid-fluid interactions, which accurately reproduce vapor−liqui...read more
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Preparation of carbon molecular sieves by carbon deposition from methane.
TL;DR: To prepare carbon molecular sieves (CMSs), methane was pyrolyzed in an attempt to deposit fine carbon particles on the micropore mouths of the carbon substrates being heated; thecarbon substrates included grain-based activated Carbons and commercial activated carbons.
Journal ArticleDOI
Effect of the zeolite crystal size on the structure and properties of carbon replicas made by a nanocasting process
Julien Parmentier,Valentin Valtchev,Fabrice Gaslain,Lubomira Tosheva,Claire Ducrot-Boisgontier,Janina Möller,Joël Patarin,Cathie Vix-Guterl +7 more
TL;DR: In this paper, carbon replicas with size of 0.1, 0.5 and 1μm were employed as molds for the synthesis of microporous carbon, and the experimental data revealed that the carbon replica molds faithfully replicate the zeolite morphology and possess higher micropore volume than that of the parent molds.
Journal ArticleDOI
Morphologically disordered pore model for characterization of micro-mesoporous carbons
Piotr Kowalczyk,Piotr A. Gauden,Sylwester Furmaniak,Artur P. Terzyk,Marek Wiśniewski,Anna Ilnicka,Jerzy P. Łukaszewicz,Andrzej Burian,Jerzy Włoch,Alexander V. Neimark +9 more
TL;DR: In this article, a morphologically disordered slit-shaped pore (MDSP) model was proposed for simulating gas adsorption in micro-mesoporous carbonaceous materials.
Journal ArticleDOI
Characterization of single wall carbon nanotubes by nonane preadsorption
Oleg Byl,Jie Liu,John T. Yates +2 more
TL;DR: The preferential blocking of the interior adsorption sites of single walled carbon nanotubes (SWNTs) by n -nonane is demonstrated in this paper, showing that interior sites with diameters less than ∼14 A remained filled with n-nonane, blocking the physical adaption of N 2 on these sites at 77.3 K.
Journal ArticleDOI
Tests of Pore-Size Distributions Deduced from Inversion of Simulated and Real Adsorption Data
Angela D. Lueking,Hye-Young Kim,Jacek Jagiello,Kevin Bancroft,J. Karl Johnson,Milton W. Cole +5 more
TL;DR: In this article, the pore size distributions for a series of model and experimental materials were determined by inverting the adsorption integral equation, with the goal of probing the ability of the inversion procedure to reproduce faithfully the input pore sizes distribution and ascertain the reality of anomalous gaps often deduced in the literature.
References
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