Search Results

You are looking at 1 - 10 of 119 items for :

  • "pore size distribution" x
  • Refine by Access: All Content x
Clear All

adsorbed phase is taken into consideration [ 5 ]. The desorption isotherm used in determination of the pore size distribution (PSD) is affected by the pore network: when pressure is reduced, liquid will evaporate from large open pores, but pores of the same

Open access

Suitable container design permits very high temperature and differential temperature resolution in DSC even when relatively large (− 0.14 cm3) samples are used; and thus energy signals associated with phase change occurring over large temperature intervals may be analysed in differential elements.

Restricted access

Thermoporosimetry

Pore size distribution measurements for microporous glass using differential scanning calorimetry

Journal of Thermal Analysis and Calorimetry
Authors: K. Ishikiriyama, M. Todoki, K. H. Min, S. Yonemori, and M. Noshiro

The pore size distributions (PSDs) of microporous glass, which were controlled by acid leaching subsequent to phase separation of CaO-Al2O3-B2O3-SiO2 glass, were determined via both mercury porosimetry and thermoporosimetry (thermal porosimetry). As a result, the pore radii, the cumulative pore volumes, and the surface areas determined via thermoporosimetry were in good agreement with those determined via mercury porosimetry. It was revealed that thermoporosimetry could be applied to pore structure analysis for porous materials having pore sizes at least up to 58 nm in radius.

Restricted access

References C.H. Arns 2004 A comparison of pore size distributions derived by NMR and X-ray-CT techniques Physica A

Restricted access

injection pressure for pore size in the range between 0.004 and 10 μm. Pore size distribution from mercury intrusion data was calculated by Washburn Eq. 1 , assuming a contact angle of 141.3° and a Hg surface tension of 480 dyn/cm. (1) where r is the

Restricted access

surface area, micropore volume and pore size distribution of samples were calculated from the nitrogen adsorption isotherms by applying the Brunauer–Emmett–Teller (BET), Dubinin–Radushkevich (DR) and Horvath-Kawazoe (HK) models, respectively

Restricted access

conductivity as related to pore size distribution in unsaturated soils . Soil Sci. 174 . ( 9 ) 508 – 515 . Amyx , J. W. , Bass , D. M. & Whitting , R

Restricted access

roughness), the composition (type of binder and granulometry of aggregate) the physical properties the thermal characteristics and the pore size distribution [ 14 ]. Materials and Methods Two natural pozzolans available at the

Restricted access

Abstract  

Peculiarities of carbonization of two styrene/divinylbenzene precursors (one sulfonated, another aminated and phosphorylated) have been investigated by thermogravimetry and differential thermal analysis. It was shown that phosphorus compounds incorporate into carbon structure and cause delayed carbonization. Porous structure and surface properties of synthetic carbons have been investigated by standard (BET, αs method, DA) and advanced (AED, PSD, regularization) methods from benzene and water adsorption isotherms. It was shown that phosphorus-containing carbon is less microporous and shows highly hydrophilic surface.

Restricted access

hydraulic conductivity as related to pore size distribution in unsaturated soils . Soil Sci . 174 . ( 9 ) 508 – 515 . Amyx , J. W. , Bass , D. M

Restricted access