Effects of surface area, free volume, and heat of adsorption on hydrogen uptake in metal-organic frameworks

Article Abstract:

The effects of surface area, free volume, and heat of adsorbent on hydrogen uptake were investigated by performing simulation over a wide range of pressures on isoreticular metal-organic frameworks (IRMOFs), which have same framework topology and surface chemistry but varying pore sizes. The results reveal the existence of three adsorption regimes, at low pressure (loading) hydrogen uptake correlates with the heat of adsorption, at intermediate pressure uptake correlates with the surface area and at the highest pressures uptake correlates with the free volume.

Industrial Gas Manufacturing, Industrial gases, Hydrogen

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Promoting effects of chloride on the So (sub 2) adsorption capacity and adsorption rate of alumina-supported copper oxide adsorbents: thermogravimetric and infrared studies

Article Abstract:

Chloride was observed to be a strong promoter for low-temperature (150 degree C) adsorption of So (sub 2) from oxygen containing gas streams. Results stated that chloride is the promoter, not an alkali metal, and that the enhancement observed in terms of capacity for So (sub 2) adsorption is more than 100% for adsorbents formed using CuO as the copper source.

Copper oxide, Copper oxides, Chlorides, Chemical properties, Dichloropropane

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Molecular simulation of RMM: Ordered mesoporous SBA-15 type material having microporous ZSM-5 walls

Article Abstract:

A study of RMM (replicated mesoporous materials), which are SBA-15 like ordered mesoporous materials with walls made up of ZSM-5, is presented using molecular modeling. It is found that RMMs have significantly higher methane adsorption capacity compared to SBA-15 and the majority of methane is adsorbed in the microporous walls of RMM.

Methane

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