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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Journal ArticleDOI
Carbon-based Supercapacitors Produced by Activation of Graphene
Yanwu Zhu,Shanthi Murali,Meryl D. Stoller,K. J. Ganesh,Weiwei Cai,Paulo J. Ferreira,Adam Pirkle,Robert M. Wallace,Katie A. Cychosz,Matthias Thommes,Dong Su,Eric A. Stach,Rodney S. Ruoff +12 more
TL;DR: This work synthesized a porous carbon with a Brunauer-Emmett-Teller surface area, a high electrical conductivity, and a low oxygen and hydrogen content that has high values of gravimetric capacitance and energy density with organic and ionic liquid electrolytes.
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Porous, Crystalline, Covalent Organic Frameworks
Adrien P. Côté,Annabelle I. Benin,Nathan W. Ockwig,Michael O'Keeffe,Adam J. Matzger,Omar M. Yaghi +5 more
TL;DR: Covalent organic frameworks (COFs) have been designed and successfully synthesized by condensation reactions of phenyl diboronic acid and hexahydroxytriphenylene to form rigid porous architectures with pore sizes ranging from 7 to 27 angstroms.
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Gas adsorption characterization of ordered organic-inorganic nanocomposite materials
Michal Kruk,Mietek Jaroniec +1 more
TL;DR: A critical review of adsorption methods that are currently used in the characterization of ordered organic−inorganic nanocomposite materials is presented in this paper, where the authors compare and evaluate the available methods for mesopore size analysis.
Journal ArticleDOI
Pore size determination in modified micro- and mesoporous materials. Pitfalls and limitations in gas adsorption data analysis
TL;DR: In this article, the pore size distributions derived from adsorption isotherms of micro- and mesoporous materials are identified and discussed based on new results and examples reported in the recent literature.
Reference EntryDOI
Surface Area and Porosity
TL;DR: The sections in this article are==================PRECI and the standard isotherm concept as mentioned in this paper, the BET method, the standard isotope concept, and an assessment of porosity.
References
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Journal ArticleDOI
Phase transitions in a cylindrical pore
TL;DR: In this article, the authors report adsorption isotherms for a Lennard-Jones fluid confined in a cylindrical pore with attractive walls at temperatures above the wetting temperature.
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Nitrogen Adsorption Studies of Novel Synthetic Active Carbons
TL;DR: Although active carbons under study show appreciable differences in the BET specific surface area and the total pore volume, they exhibit quite similar porous properties, which is crucial in profound characterization of porous and nonporous solids by means of comparative methods of adsorption analysis.
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Theoretical interpretation of adsorption behavior of simple fluids in slit pores
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Simulation study on the relationship between a high resolution αs-plot and the pore size distribution for activated carbon
TL;DR: In this article, the effects of micropore structure of activated carbons on the high resolution αsplot for nitrogen adsorption isotherms were examined with the grand canonical Monte Carlo simulation.
Journal ArticleDOI
The solution of adsorption integral equations by means of the regularization method
TL;DR: In this paper, the authors show that the difficulties arising from the ill-posed nature of an adsorption equation can be overcome with the regularization method, and apply this method to calculate a distribution function from any overall adorption function.