Results 171 to 180 of about 3,683 (204)

The applicability of the numerical algorithm for the evaluation of isosteric heat of adsorption

Carbon, 2004
Abstract The calculation of isosteric enthalpy from an adsorption equation, and the comparison of theoretical enthalpy plot with the values measured calorimetrically is the fundamental condition for the verification of the correctness of an adsorption model.
Radosław P. Wesołowski, Piotr.A. Gauden, Artur P. Terzyk, Sylwester Furmaniak   +3 more
openaire   +1 more source

Net isosteric heat of sorption in dried fruits

Journal of Food Engineering, 1991
Abstract In this work, the net isosteric heats of sorption (q st,n ) of five dried fruits (sultana raisins, currants, figs, prunes and apricots) were determined for adsorption and desorption, using the relevant thermodynamic relation, (i.e. Clausius-Clapeyron equation) in the temperature range 15–60°C, based on experimental sorption data. From the
openaire   +1 more source

Isosteric heat of sorption of CO2 in poly(ethylene terephthalate)

Polymer, 1985
Abstract Sorption isotherms for carbon dioxide in poly(ethylene terephthalate) have been measured at 35–55°C. The isotherms were measured gravimetrically on a Mettler Thermoanalyzer-1 from vacuum to 1 atmosphere. The sorption data were used to generate sorption isotherms from which the isosteric heat of sorption of CO2 in PET was determined.
Michael D. Sefcik, Henry K. Yuen, David D. Chan   +2 more
openaire   +1 more source

Isosteric Heat of Potential Confinement in the Hydrogen Storage Material

Nano, 2015
In the hydrogen storage problem, if an attractive potential well is formed inside the void space of porous materials, the storage gas density is expected to increase significantly compared to the H2 gas density outside the material. Actually, the overall H2 density inside the material is enhanced basically by a Boltzmann factor of exp[[Formula: see ...
Jaehyun Bae, Jong Hyun Jung, Yea-Lee Lee, Jeongwoon Hwang, Dongwook Kim, Seungwook Son, Jisoon Ihm   +6 more
openaire   +1 more source

Isosteric heat of sorption of dihydrogen on alumina-supported palladium

Journal of the Chemical Society, Faraday Transactions, 1995
Pd/Al2O3 samples of different palladium loadings were prepared by an incipient wetness technique. The palladium dispersion (D) of each sample was estimated from its isotherm of hydrogen uptake measured volumetrically at 298 K. The isosteric heat of hydrogen sorption (q, including absorption and adsorption) on palladium was determined from a series of ...
Shu-Chin Chou, Shu-Hui Lin, Chuin-Tih Yeh   +2 more
openaire   +1 more source

Desorption isotherms and isosteric heat of anaerobic fermentation residues

Chinese Journal of Chemical Engineering, 2019
Abstract This paper presents the equilibrium desorption isotherms and the isosteric heat of sorption of a mixture containing mechanically dewatered fermentation residue (obtained from a blend of chicken, swine and cattle manure) used in biogas plants and corn spoiled silage in a ratio of 2:1.
Tibor Poós, Viktor Szabó
openaire   +1 more source

Equilibrium isotherms and isosteric heats of morel (Morchella esculenta)

Journal of Food Engineering, 2002
Abstract Moisture desorption isotherms of Morchella esculenta mushrooms were determined at 5, 15, 25 and 35 °C and within the range of 0.11–0.92 water activity using a standardized conductivity hygrometer. Five models were considered to describe isotherms (GAB, Oswin modified, Henderson modified, Halsey modified and Ratti) being fitted to the ...
A Mulet, P Garcı́a-Pascual, N Sanjuán, J Garcı́a-Reverter   +3 more
openaire   +1 more source

Isosteric heats of adsorption for nitrogen adsorbed on microporous silica

Journal of the Chemical Society A: Inorganic, Physical, Theoretical, 1971
Nitrogen adsorption isotherms at three different but similar temperatures were determined on samples of microporous silicas prepared by a freeze–thaw technique. A maximum in the plot of the isosteric heat of adsorption against coverage was observed on all the samples investigated.
D. Dollimore, T. Shingles
openaire   +1 more source

Determination of the isosteric heat of adsorption by gas adsorption chromatography

Journal of Chromatography A, 1977
Abstract The determination of the isosteric heat of adsorption by means of polynomial approximation of an experimentally obtained-function—retention volume versus adsorbate pressure—is discussed. The equation is proposed by means of which the isosteric heat of adsorption can easily be calculated by using the approximation coefficients.
J. Gawdzik, M. Jaroniec
openaire   +1 more source

The determination of sorption isotherm and the isosteric heats of sorption for potatoes

Journal of Food Engineering, 1998
Abstract Sorption isotherms were determined for potatoes at three different temperatures, (30, 45 and 60 °C), using a standard gravimetric method. The goodness of fit of four sorption models to experimental results was determined. Of the models tested the GAB, Oswin and Hasley models gave good fits while the BET model gave a poor fit.
C.P. McLaughlin, T.R.A. Magee
openaire   +1 more source