Low temperature adsorption of hydrogen on nanoporous materials

Hwa Jhung Sung; Woong Yoon Ji; Hye Kyung Kim; Jong San Chang

doi:10.5012/bkcs.2005.26.7.1075

Low temperature adsorption of hydrogen on nanoporous materials

Hwa Jhung Sung, Woong Yoon Ji, Hye Kyung Kim, Jong San Chang

Korea Research Institute of Chemical Technology

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Abstract

Hydrogen adsorption on various porous materials have been studied with a volumetric method at low temperature in the pressure of 0-760 torr. Their hydrogen uptakes depend at least partly on microporosity rather than total porosity. However, it is also necessary to consider other parameters such as pore size and pore architecture to explain the adsorption capacity. The heat of adsorption and adsorption-desorption-readsorption experiments show that the hydrogen adsorption over the porous materials are composed of physisorption with negligible contribution of chemisorption. Among the porous materials studied in this work, SAPO-34 has the highest adsorption capacity of 160 mL/g at 77 K and 1 atm probably due to high micropore surface area, micropore volume and narrow pore diameter.

Original language	English
Pages (from-to)	1075-1078
Number of pages	4
Journal	Bulletin of the Korean Chemical Society
Volume	26
Issue number	7
DOIs	https://doi.org/10.5012/bkcs.2005.26.7.1075
State	Published - 20 Jul 2005

Keywords

Aluminophosphate
Hydrogen adsorption
Metal-organic framework
Molecular sieve

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10.5012/bkcs.2005.26.7.1075

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abstract = "Hydrogen adsorption on various porous materials have been studied with a volumetric method at low temperature in the pressure of 0-760 torr. Their hydrogen uptakes depend at least partly on microporosity rather than total porosity. However, it is also necessary to consider other parameters such as pore size and pore architecture to explain the adsorption capacity. The heat of adsorption and adsorption-desorption-readsorption experiments show that the hydrogen adsorption over the porous materials are composed of physisorption with negligible contribution of chemisorption. Among the porous materials studied in this work, SAPO-34 has the highest adsorption capacity of 160 mL/g at 77 K and 1 atm probably due to high micropore surface area, micropore volume and narrow pore diameter.",

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AU - Sung, Hwa Jhung

AU - Ji, Woong Yoon

AU - Kim, Hye Kyung

AU - Chang, Jong San

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Y1 - 2005/7/20

N2 - Hydrogen adsorption on various porous materials have been studied with a volumetric method at low temperature in the pressure of 0-760 torr. Their hydrogen uptakes depend at least partly on microporosity rather than total porosity. However, it is also necessary to consider other parameters such as pore size and pore architecture to explain the adsorption capacity. The heat of adsorption and adsorption-desorption-readsorption experiments show that the hydrogen adsorption over the porous materials are composed of physisorption with negligible contribution of chemisorption. Among the porous materials studied in this work, SAPO-34 has the highest adsorption capacity of 160 mL/g at 77 K and 1 atm probably due to high micropore surface area, micropore volume and narrow pore diameter.

AB - Hydrogen adsorption on various porous materials have been studied with a volumetric method at low temperature in the pressure of 0-760 torr. Their hydrogen uptakes depend at least partly on microporosity rather than total porosity. However, it is also necessary to consider other parameters such as pore size and pore architecture to explain the adsorption capacity. The heat of adsorption and adsorption-desorption-readsorption experiments show that the hydrogen adsorption over the porous materials are composed of physisorption with negligible contribution of chemisorption. Among the porous materials studied in this work, SAPO-34 has the highest adsorption capacity of 160 mL/g at 77 K and 1 atm probably due to high micropore surface area, micropore volume and narrow pore diameter.

KW - Aluminophosphate

KW - Hydrogen adsorption

KW - Metal-organic framework

KW - Molecular sieve

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JO - Bulletin of the Korean Chemical Society

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Low temperature adsorption of hydrogen on nanoporous materials

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