Local Pressure of Supercritical Adsorbed Hydrogen in Nanopores

Jimmy Romanos; Sara Abou Dargham; Roy Roukos; Peter Pfeifer

doi:10.3390/ma11112235

Local Pressure of Supercritical Adsorbed Hydrogen in Nanopores

Jimmy Romanos, Sara Abou Dargham, Roy Roukos, Peter Pfeifer

Research output: Contribution to journal › Article › Academic › peer-review

Abstract

An overview is given of the development of sorbent materials for hydrogen storage. Understanding the surface properties of the adsorbed film is crucial to optimize hydrogen storage capacities. In this work, the lattice gas model (Ono-Kondo) is used to determine the properties of the adsorbed hydrogen film from a single supercritical hydrogen isotherm at 77 K. In addition, this method does not require a conversion between gravimetric excess adsorption and absolute adsorption. The overall average binding energy of hydrogen is 4.4 kJ/mol and the binding energy at low coverage is 9.2 kJ/mol. The hydrogen film density at saturation is 0.10 g/mL corresponding to a local pressure of 1500 bar in the adsorbed phase.

Original language	English
Journal	Materials
Volume	11
Issue number	11
DOIs	https://doi.org/10.3390/ma11112235
Publication status	Published - 10 Nov 2018
Externally published	Yes

Keywords

hydrogen storage
ono-kondo
activated carbon
adsorption
nanopores

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10.3390/ma11112235Licence: CC BY

2 Article

Properties of adsorbed supercritical methane film in nanopores
Romanos, J., Abou Dargham, S., Roukos, R. & Pfeifer, P., 1 Dec 2018, In: AIP Advances. 8, 12
Research output: Contribution to journal › Article › Academic › peer-review

Open Access
Structure–Function Relations for Gravimetric and Volumetric Methane Storage Capacities in Activated Carbon
Romanos, J., Abou Dargham, S., Prosniewski, M., Roukos, R., Barakat, F. & Pfeifer, P., 2018, In: ACS Omega. 3, 11, p. 15119–15124 6 p.
Research output: Contribution to journal › Article › Academic › peer-review

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title = "Local Pressure of Supercritical Adsorbed Hydrogen in Nanopores",

abstract = "An overview is given of the development of sorbent materials for hydrogen storage. Understanding the surface properties of the adsorbed film is crucial to optimize hydrogen storage capacities. In this work, the lattice gas model (Ono-Kondo) is used to determine the properties of the adsorbed hydrogen film from a single supercritical hydrogen isotherm at 77 K. In addition, this method does not require a conversion between gravimetric excess adsorption and absolute adsorption. The overall average binding energy of hydrogen is 4.4 kJ/mol and the binding energy at low coverage is 9.2 kJ/mol. The hydrogen film density at saturation is 0.10 g/mL corresponding to a local pressure of 1500 bar in the adsorbed phase.",

keywords = "waterstofopslag, opslag van waterstof, ono-kondo, geactiveerde koolstof, adsorptie, nanopori{\"e}n, hydrogen storage, ono-kondo, activated carbon, adsorption, nanopores",

author = "Jimmy Romanos and {Abou Dargham}, Sara and Roy Roukos and Peter Pfeifer",

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language = "English",

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T1 - Local Pressure of Supercritical Adsorbed Hydrogen in Nanopores

AU - Romanos, Jimmy

AU - Abou Dargham, Sara

AU - Roukos, Roy

AU - Pfeifer, Peter

PY - 2018/11/10

Y1 - 2018/11/10

N2 - An overview is given of the development of sorbent materials for hydrogen storage. Understanding the surface properties of the adsorbed film is crucial to optimize hydrogen storage capacities. In this work, the lattice gas model (Ono-Kondo) is used to determine the properties of the adsorbed hydrogen film from a single supercritical hydrogen isotherm at 77 K. In addition, this method does not require a conversion between gravimetric excess adsorption and absolute adsorption. The overall average binding energy of hydrogen is 4.4 kJ/mol and the binding energy at low coverage is 9.2 kJ/mol. The hydrogen film density at saturation is 0.10 g/mL corresponding to a local pressure of 1500 bar in the adsorbed phase.

AB - An overview is given of the development of sorbent materials for hydrogen storage. Understanding the surface properties of the adsorbed film is crucial to optimize hydrogen storage capacities. In this work, the lattice gas model (Ono-Kondo) is used to determine the properties of the adsorbed hydrogen film from a single supercritical hydrogen isotherm at 77 K. In addition, this method does not require a conversion between gravimetric excess adsorption and absolute adsorption. The overall average binding energy of hydrogen is 4.4 kJ/mol and the binding energy at low coverage is 9.2 kJ/mol. The hydrogen film density at saturation is 0.10 g/mL corresponding to a local pressure of 1500 bar in the adsorbed phase.

KW - waterstofopslag

KW - opslag van waterstof

KW - ono-kondo

KW - geactiveerde koolstof

KW - adsorptie

KW - nanoporiën

KW - hydrogen storage

KW - ono-kondo

KW - activated carbon

KW - adsorption

KW - nanopores

U2 - 10.3390/ma11112235

DO - 10.3390/ma11112235

M3 - Article

C2 - 30423817

SN - 1996-1944

VL - 11

JO - Materials

JF - Materials

IS - 11

ER -

Local Pressure of Supercritical Adsorbed Hydrogen in Nanopores

Abstract

Keywords

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Research output

Properties of adsorbed supercritical methane film in nanopores

Structure–Function Relations for Gravimetric and Volumetric Methane Storage Capacities in Activated Carbon

Cite this