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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机译：已经在低温下在0-760托的压力下用体积法研究了氢在各种多孔材料上的吸附。它们的氢吸收至少部分取决于微孔而不是总孔隙率。但是，还必须考虑其他参数（例如孔径和孔结构）来解释吸附能力。吸附热和吸附-解吸-再吸附实验表明，氢在多孔材料上的吸附由物理吸附组成，化学吸附的贡献可忽略不计。在这项工作研究的多孔材料中，SAPO-34在77 K和1个大气压下具有160 mL / g的最高吸附容量，这可能是由于高微孔表面积，微孔体积和狭窄的孔径所致。
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