Carbon Molecular Sieves Prepared from Polymeric Precursors: Porous Structure and Hydrogen Adsorption Properties

2009 ◽  
Vol 48 (15) ◽  
pp. 7125-7131 ◽  
Author(s):  
Ana M Silvestre-Albero ◽  
Anass Wahby ◽  
Joaquín Silvestre-Albero ◽  
Francisco Rodríguez-Reinoso ◽  
William Betz
Keyword(s):  
Porous Structure ◽  
Molecular Sieves ◽  
Hydrogen Adsorption ◽  
Adsorption Properties ◽  
Carbon Molecular Sieves ◽  
Polymeric Precursors

scholarly journals Synthesis of Porous Inorganic Membranes

MRS Bulletin ◽  
1999 ◽  
Vol 24 (3) ◽  
pp. 30-35 ◽  
Author(s):  
Michael Tsapatsis ◽  
George R. Gavalas
Keyword(s):  
Molecular Sieves ◽  
Activated Carbons ◽  
High Surface ◽  
Sol Gel ◽  
Adsorption Properties ◽  
Air Separation ◽  
Inorganic Membranes ◽  
Carbon Molecular Sieves ◽  
Functional Composites ◽  
Molecular Sieving

Here we will attempt a brief overview of recent synthetic efforts for micropore and lower-end mesopore membranes. We will not address the very important classes of nonporous membranes, such as dense metals and solid electrolytes with applications in H2 and O2 separations, or meso- and macroporous membranes, which find applications in food processing and water treatment. Microporous materials provide high permselectivities for molecules encountered in the chemical-processing industry but suffer from low intrinsic permeabilities. Therefore, in order to bring microporous membrane materials to commercial applications, functional composites with small effective thicknesses (in the micron or submicron range) must be developed. For example, to achieve economical membrane-reactor sizes, fluxes as high as 0.1 mol/(m2 s) are desirable. Approaches to microporous membranes include modification of mesoporous membranes by sol-gel and chemical-vapor-deposition (CVD) techniques, carbonization of polymers to form molecular-sieve carbon, and polycrystalline-film growth of zeolites and other molecular sieves.Microporous carbon is widely used for liquid or gas purification because of its strong adsorptive properties and high surface area. It is also used for air separation by pressure swing adsorption (PSA), relying on its adsorptive and molecular-sieving properties. From the standpoint of applications, microporous carbons are classified into activated carbons with pore size 0.8–2 nm, and ultramicroporous carbons or carbon molecular sieves with pores 0.3–0.6 nm. Activated carbons are used because of their strong adsorption properties, while carbon molecular sieves are useful on account of their molecular-sieving as well as adsorption properties.

Adsorption properties of carbon molecular sieves prepared from an activated carbon by pitch pyrolysis

Carbon ◽  
2005 ◽  
Vol 43 (8) ◽  
pp. 1643-1651 ◽  
Author(s):  
D. Lozano-Castello ◽  
J. Alcaniz-Monge ◽  
D. Cazorla-Amorós ◽  
A. Linares-Solano ◽  
W. Zhu ◽  
...  
Keyword(s):  
Activated Carbon ◽  
Molecular Sieves ◽  
Adsorption Properties ◽  
Carbon Molecular Sieves

scholarly journals Adsorption of H2 on Penta-Octa-Penta Graphene: Grand Canonical Monte Carlo Study

2020 ◽  
Vol 6 (2) ◽  
pp. 20
Author(s):  
Maxim N. Popov ◽  
Thomas Dengg ◽  
Dominik Gehringer ◽  
David Holec
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Hydrogen Adsorption ◽  
Monte Carlo Study ◽  
Adsorption Properties ◽  
Cryogenic Temperatures ◽  
Grand Canonical Monte Carlo ◽  
New Material ◽  
Grand Canonical ◽  
Carbon Based

In this paper, we report the results of hydrogen adsorption properties of a new 2D carbon-based material, consisting of pentagons and octagons (Penta-Octa-Penta-graphene or POP-graphene), based on the Grand-Canonical Monte Carlo simulations. The new material exhibits a moderately higher gravimetric uptake at cryogenic temperatures (77 K), as compared to the regular graphene. We discuss the origin of the enhanced uptake of POP-graphene and offer a consistent explanation.

Hydrogen adsorption properties of polymer-derived nanoporous SiCx fibers

2010 ◽  
Vol 35 (7) ◽  
pp. 3165-3169 ◽  
Author(s):  
Zengyong Chu ◽  
Rongan He ◽  
Xiaobin Zhang ◽  
Haifeng Cheng ◽  
Xiaodong Li ◽  
...  
Keyword(s):  
Hydrogen Adsorption ◽  
Adsorption Properties

Hydrogen adsorption properties based on holey graphene sheets

2018 ◽  
Author(s):  
Amanpreet Kaur ◽  
Jasmeet Kaur ◽  
Anita Hastir ◽  
Virpal ◽  
Ravi Chand Singh
Keyword(s):  
Hydrogen Adsorption ◽  
Adsorption Properties ◽  
Graphene Sheets
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