Fine Control of Water-Adsorption Properties of Crystalline Microporous Aluminophosphates by Changing Porous Structure and Framework Composition for Application in Water Adsorption Chiller

A series of oxidized carbons has been prepared by treatment of the carbon with concentrated nitric acid at various temperatures, and the surface and adsorption properties of the prepared carbons studied. Water adsorption was modelled using a recently derived equation capable of predicting a value for the primary adsorption sites on the surface of a microporous carbon while fitting the experimentally determined isotherm at high relative pressures. The concentration of primary sites was seen to increase with increasing temperature of oxidation. The very highly oxidized carbon samples were found to have a significantly lower BET surface area determined from nitrogen desorption at 77 K and higher apparent density measured from mercury displacement.

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Surface area, porosity and water adsorption properties of fine volcanic ash particles

Bulletin of Volcanology ◽

10.1007/s00445-004-0370-x ◽

2004 ◽

Vol 67 (2) ◽

pp. 160-169 ◽

Cited By ~ 72

Author(s):

Pierre Delmelle ◽

Fr�d�ric Villi�ras ◽

Manuel Pelletier

Keyword(s):

Surface Area ◽

Volcanic Ash ◽

Water Adsorption ◽

Adsorption Properties

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When Water becomes an Integral Part of Carbon - Combining Theory and Experiment to Understand the Zeolite-like Water Adsorption Properties of porous C2N Materials

Journal of Materials Chemistry A ◽

10.1039/d1ta05122a ◽

2021 ◽

Author(s):

Julian Heske ◽

Ralf Walczak ◽

Jan Dirk Epping ◽

Sol Youk ◽

Sudhir Kumar Sahoo ◽

...

Keyword(s):

Water Adsorption ◽

Adsorption Properties ◽

Water Molecules ◽

Theory And Experiment

The interaction between water molecules and surfaces in porous systems is of huge importance in various fields including but not limited to catalysis, adsorption, and the storage or conversion of...

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Adsorption Characteristics of Lead-, Barium- and Hydrogen-Rich Clinoptilolite Mineral

Adsorption Science & Technology ◽

10.1260/026361703322405042 ◽

2003 ◽

Vol 21 (4) ◽

pp. 309-317 ◽

Cited By ~ 3

Author(s):

Fehime Cakicioglu-Ozkan ◽

Semra Ulku

Keyword(s):

Water Adsorption ◽

Adsorption Properties ◽

Adsorption Mechanisms ◽

Adsorption Data ◽

Vapour Adsorption ◽

Water Vapour Adsorption ◽

Rich Material ◽

Static Conditions ◽

Treatment Water

The carbon dioxide and water vapour adsorption properties of local clinoptilolite-rich material, both as the original and as lead-, barium- and hydrogen-rich forms, were examined. The lead- and barium-rich forms were prepared by treatment of the original clinoptilolite with Pb(NO3)2 and BaCl2 respectively, while the hydrogen-rich form was prepared by NH4Cl and heat treatment. Water and CO2 adsorption experiments were conducted in a volumetric system under static conditions, with low-pressure adsorption data being used for the characterization of the natural, Pb-rich, Ba-rich and H-rich clinoptilolite samples. Although the existence of barium-exchange was not noted, an appreciable decrease in CO2 adsorption was observed with the Pb-rich and H-rich forms due to a decrease in the electrostatic interaction between the surface and the adsorbate. Application of the Dubinin–Astakhov equation to the water adsorption data established the existence of micropores of different sizes that exhibited different adsorption mechanisms.

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WATER ADSORPTION PROPERTIES of COATED and NONCOATED POPCORNS

Journal of Food Processing and Preservation ◽

10.1111/j.1745-4549.1999.tb00400.x ◽

1999 ◽

Vol 23 (6) ◽

pp. 499-513

Author(s):

MEDENI MASKAN ◽

FAHRETFIN GÖGÜŞ

Keyword(s):

Water Adsorption ◽

Adsorption Properties

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Review for "Prosopis spp. powders: influence of chemical components in water adsorption properties"

10.1111/ijfs.14629/v1/review2 ◽

2020 ◽

Keyword(s):

Water Adsorption ◽

Adsorption Properties ◽

Chemical Components

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Molecular Simulation of Adsorbed Water on Mesoporous Silica Thin Films

ASME 2013 11th International Conference on Nanochannels, Microchannels, and Minichannels ◽

10.1115/icnmm2013-73131 ◽

2013 ◽

Author(s):

Kyohei Yamashita ◽

Hirofumi Daiguji

Keyword(s):

Thin Films ◽

Mesoporous Silica ◽

Water Adsorption ◽

Pore Radius ◽

Md Simulations ◽

Adsorption Properties ◽

Pore Surface ◽

Silica Thin Films ◽

Adsorption Layers ◽

Kinetics Of

Grand canonical Monte Carlo (GCMC) and canonical ensemble molecular dynamics (NVT-MD) simulations were performed to investigate water adsorption properties in mesoporous silica thin films. The effect of pore radius on the adsorption properties was assessed using two models of mesoporous silica thin films having different pore radius and film thickness (1.38 and 5.66 nm in Model 1, respectively, and 1.81 and 7.30 nm in Model 2, respectively). In the simulations, a water adsorption layer or water menisci were formed in a mesopore accompanying the growth or shrinkage of stable adsorption layers on the upper and lower surfaces. The stable two water adsorption layers were formed on the pore surface in both models. The curvature radius of a water meniscus decreased monotonically and approached a constant value. In addition, NVT-MD simulations were performed to investigate the kinetics of water uptake into a model of mesoporous silica thin film having a radius and thickness of 1.38 and 7.93 nm (Model 3). The calculation results showed that the kinetics of water uptake depended on the number of water molecules and there were two different transport mechanisms in the pore. One was diffusion of water along the pore surface, and the other was capillary rise of liquid water.

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