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Search query: gas uptake

85 articles match your search "gas uptake"

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A new sapphire single-crystal gas-pressure cell for elastic neutron scattering to study solid–gas reactions is presented and evaluated; it allows conditions of 298 K and 9.5 MPa hydrogen pressure and 1110 K at ambient pressure.

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A gas-pressure cell for in situ neutron powder diffraction based on a sapphire single crystal is described. Materials information, technical drawings and instructions for use are included.

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Adsorption and separation of gases is one of the primary applications of the class of materials known as metal–organic frameworks (MOFs). The role of crystallography in characterizing adsorbed gas molecules and changes in framework structure upon gas sorption is reviewed.

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This research uses contrast-matched small-angle neutron scattering to investigate the adsorption behaviour of deuterated methane in a silica aerogel in the pressure range from 0 to 1000 bar. The results reveal a classical reversible two-phase adsorption in the 2.5–50 nm pore size region and no evidence of condensation in the sub-nanometre pores.

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We report the controlled synthesis of non-inter­penetrated and inter­penetrated methyl-modified MOF-5, which exhibit different pore structures. These com­pounds were prepared via a solvo­thermal synthesis, in which the choice of solvent is of critical importance.

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This paper reports on metal–organic frameworks which can be designed and synthesized to investigate structure predictability using a SBB (supermolecular building blocks) approach.

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A free-film sample environment for neutron scattering, particularly useful for in situ small-angle neutron scattering, is presented, providing a sample area of up to 7 × 20 mm and an average thickness of 500 µm. The instrumental background is reduced by 37% compared with standard Hellma cells, and a helium jacketing of the entire setup provides a minimized H/D exchange with the humidity from air.

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This paper reports the implementation of an infrared furnace, suitable for in situ single-crystal neutron diffraction, working at temperatures of up to 1000°C with different and adjustable partial gas pressures up to 2 bar.

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The effect of framework (pore) disorder on gas sorption of azole-based isoreticular Cu(II) MOFs with rtl (rutile) topology and characteristic 1D tubular pore channels is investigated for the first time.
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