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

Onderzoeksoutput: Article › Academic › peer review

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Er wordt een overzicht gegeven van de ontwikkeling van sorptiematerialen voor waterstofopslag. Inzicht in de oppervlakte-eigenschappen van de geadsorbeerde film is cruciaal om de waterstofopslagcapaciteit te optimaliseren. In dit werk wordt het roostergasmodel (Ono-Kondo) gebruikt om de eigenschappen van de geadsorbeerde waterstoffilm te bepalen op basis van een enkele superkritische waterstofisotherm bij 77 K. Bovendien is bij deze methode geen conversie nodig tussen gravimetrische overmatige adsorptie en absolute adsorptie. De totale gemiddelde bindingsenergie van waterstof is 4,4 kJ/mol en de bindingsenergie bij lage dekking is 9,2 kJ/mol. De waterstoffilmdichtheid bij verzadiging is 0,10 g/mL, wat overeenkomt met een lokale druk van 1500 bar in de geadsorbeerde fase.

Originele taal-2	English
Tijdschrift	Materials
Volume	11
Nummer van het tijdschrift	11
DOI's	https://doi.org/10.3390/ma11112235
Status	Published - 10 nov. 2018
Extern gepubliceerd	Ja

Keywords

waterstofopslag
opslag van waterstof
ono-kondo
geactiveerde koolstof
adsorptie
nanoporiën

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10.3390/ma11112235Licentie: 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
Onderzoeksoutput: 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, blz. 15119–15124 6 blz.
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@article{d205c232617e4654ac833aec221c4bba,

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",

year = "2018",

month = nov,

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doi = "10.3390/ma11112235",

language = "English",

volume = "11",

journal = "Materials",

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TY - JOUR

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

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Keywords

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Onderzoekersoutput

Properties of adsorbed supercritical methane film in nanopores

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

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