منابع مشابه
Theoretical Basis for the Dubinin-Radushkevitch (D-R) Adsorption Isotherm Equation
The Dubinin-Radushkevitch (D-R) equation, which was originally proposed as an empirical adaptation ~d'the Polanyi adsorption potential theory, has been the fundamental equation to quantitatively describe the adsorption td gases and vapors by microporous sorbents. The equation, based on the postulate that the mechanism for adsorption in micropores is that of pore-filling rather than layer-by-lay...
متن کاملsurvey on the rule of the due & hindering relying on the sheikh ansaris ideas
قاعده مقتضی و مانع در متون فقهی کم و بیش مستند احکام قرار گرفته و مورد مناقشه فقهاء و اصولیین می باشد و مشهور معتقند مقتضی و مانع، قاعده نیست بلکه یکی از مسائل ذیل استصحاب است لذا نگارنده بر آن شد تا پیرامون این قاعده پژوهش جامعی انجام دهد. به عقیده ما مقتضی دارای حیثیت مستقلی است و هر گاه می گوییم مقتضی احراز شد یعنی با ماهیت مستقل خودش محرز گشته و قطعا اقتضاء خود را خواهد داشت مانند نکاح که ...
15 صفحه اولon the effects of pictorial clues on the efl learners listening comprehension development
the following null hypothesis was proposed: there is no significant difference between the efl students listening comprehension development receiving pictorial cues and those receiving no cuse. to test the null hypothesis, 52 male and femal freshmen students of medicine studing at iran university of medical scinces were randomly selected from a total population of 72 students. to ensure that th...
15 صفحه اولThe influence of the carbon surface chemical composition on Dubinin-Astakhov equation parameters calculated from SF6 adsorption data-grand canonical Monte Carlo simulation.
Using grand canonical Monte Carlo simulation we show, for the first time, the influence of the carbon porosity and surface oxidation on the parameters of the Dubinin-Astakhov (DA) adsorption isotherm equation. We conclude that upon carbon surface oxidation, the adsorption decreases for all carbons studied. Moreover, the parameters of the DA model depend on the number of surface oxygen groups. T...
متن کامل2004: the Effects of Activated Carbon Physical and Chemical Characteristics on the Adsorption Energy and Affinity Coefficient of Dubinin-raushkevich Equation
Where V is the adsorbed gas volume at relative pressure of P/P0; V0 maximum volume of adsorbed gas in micropores; R the universal gas constant (0.0083144 kJ/K mol); T the analysis temperature (K); and E is the adsorption energy (kJ/mol). From the linearized plot of DR equation, V0 and E are calculated. By using a conversion factor the equivalent liquid volume or micropore volume can be calculat...
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ژورنال
عنوان ژورنال: Adsorption Science & Technology
سال: 1993
ISSN: 0263-6174,2048-4038
DOI: 10.1177/0263617499010001-406