Search results for "Fast measurement"

showing 2 items of 2 documents

Application of jäntti's method to volumetric adsorption measurements

2004

Jantti introduced a method to calculate the adsorption equilibrium by measuring the actual adsorbed amount three times after a change to the gas pressure. By this method the experimental time for adsorption measurement can be considerably shortened. The procedure was developed for use in adsorption measurements where the adsorbed masses are directly measured with a balance. In the present paper we will demonstrate that the method is particularly useful in volumetric (manometric) measurements.

AdsorptionGas pressureChemistryAdsorption equilibriumPhysical chemistryThermodynamicsSorptionPhysical and Theoretical ChemistryCondensed Matter PhysicsFast measurementJournal of Thermal Analysis and Calorimetry
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Saving time when measuring BET isotherms.

2007

The measurement of adsorption isotherms and the detn. of surface properties of a solid by means of the BET equation usually takes a lot of time as it involves measurement of several dynamic adsorption curves each at a given gas pressure. Two different timesaving approaches are suggested: (a) the beginning of a single dynamic curve is considered and (b) the beginnings of a no. of different dynamic curves is considered. Approach (a) is less time consuming than approach (b), where approach (b) yields more accurate ests. of the BET-parameters. A discussion is given of the possibilities of using the time saving procedure of Jaentti for the two approaches. [on SciFinder (R)]

BiomaterialsColloid and Surface ChemistryAdsorptionGas pressureChemistryThermodynamicsTime savingSurfaces Coatings and FilmsElectronic Optical and Magnetic MaterialsFast measurementJournal of colloid and interface science
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