Grand canonical Monte Carlo simulations of hydrogen adsorption in carbon aerogels

Author(s):  
Hao-Qiang Pang ◽  
Shen Li ◽  
Zeng-Yao Li
2020 ◽  
Vol 6 (2) ◽  
pp. 20
Author(s):  
Maxim N. Popov ◽  
Thomas Dengg ◽  
Dominik Gehringer ◽  
David Holec

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.


2010 ◽  
Vol 256 (17) ◽  
pp. 5226-5231 ◽  
Author(s):  
A. Gotzias ◽  
H. Heiberg-Andersen ◽  
M. Kainourgiakis ◽  
Th. Steriotis

2007 ◽  
Vol 124-126 ◽  
pp. 1693-1696 ◽  
Author(s):  
Dong Hyun Jung ◽  
Dae Jin Kim ◽  
Tae Bum Lee ◽  
Ja Heon Kim ◽  
Seung Hoon Choi

We performed grand canonical Monte Carlo simulations on the series of MOFs, that are Metal-Organic Frameworks having various organic linkers and nanocube frameworks, to find out rational design and synthetic strategies toward efficient hydrogen storage materials. The adsorption amounts of hydrogen molecules showed diverse range according to the variation of parameter values. This indicated that the hydrogen adsorption was sensitive to the values of parameters corresponding to the non-bonding interactions. The optimization of the parameters was done to fit the experimental results at 77 K. After the parameterization of the potential function, we adopted this condition to predict the adsorption amount of hydrogen molecules on IRMOF-3, which has NH2 group as the substituent of hydrogen bonded to benzene ring. The calculation results showed good agreement with experimental adsorptions and we analyzed the adsorption sites of each MOF and the relationship between the adsorption characteristics and the hydrogen uptake capacity.


2021 ◽  
Vol 83 (3) ◽  
pp. 372-378
Author(s):  
A. A. Sizova ◽  
S. A. Grintsevich ◽  
M. A. Kochurin ◽  
V. V. Sizov ◽  
E. N. Brodskaya

Abstract Grand canonical Monte Carlo simulations were performed to study the occupancy of structure I multicomponent gas hydrates by CO2/CH4, CO2/N2, and N2/CH4 binary gas mixtures with various compositions at a temperature of 270 K and pressures up to 70 atm. The presence of nitrogen in the gas mixture allows for an increase of both the hydrate framework selectivity to CO2 and the amount of carbon dioxide encapsulated in hydrate cages, as compared to the CO2/CH4 hydrate. Despite the selectivity to CH4 molecules demonstrated by N2/CH4 hydrate, nitrogen can compete with methane if the gas mixture contains at least 70% of N2.


1998 ◽  
Vol 7 (3) ◽  
pp. 573-579 ◽  
Author(s):  
Tami J. Marrone ◽  
J. Andrew McCammon ◽  
Haluk Resat ◽  
C. Nicholas Hodge ◽  
Chong-Hwan Chang

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