Search Results

You are looking at 91 - 100 of 118 items for :

  • "pore size distribution" x
  • All content x
Clear All

calculated by using the Brunauer–Emmett–Teller (BET) method and the pore size distributions were measured by using Barrett–Joyner–Halenda (BJH) analysis from the desorption curve of the isotherms. The infrared spectra (IR) of samples were recorded in KBr

Restricted access
Agrokémia és Talajtan
Authors: András Makó, Tamás Varga, Hilda Hernádi, Viktória Labancz, and Gyöngyi Barna

. Complete characterization of pore size distribution of tilled and orchard soil using water retention curve, mercury porosimetry, nitrogen adsorption, and water desorption methods . Geoderma . 135 . 307 – 314

Restricted access

total pore volume; and its shape is related to the actual pore size distribution [ 2 , 9 ]. On the other side, the Rb peak proceeds always at the same temperatures as in the case of the pure cetane (also shown in Figs. 7 , 8 ), however, it is small

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: Ana C. R. Melo, Edjane F. B. Silva, Larissa C. L. F. Araujo, Mirna F. Farias, and Antonio S. Araujo

–desorption isotherms provides a powerful technique to determine the surface area, pore volume, and pore size distribution. The surface area was obtained correlating the data of P / P 0 in the range of 0.03–0.5 by the Brunauer–Emmett–Teller method (BET) [ 20 , 21

Restricted access

microscope with EDS analyzer. The measurements of particle size distribution were carried out with Mastersizer 2000 from Malvern Instruments. The measurements of open pore size distribution were performed with PoreMaster 60 from Quantachrome

Open access
Journal of Thermal Analysis and Calorimetry
Authors: N. Ivashchenko, V. Tertykh, V. Yanishpolskii, J. Skubiszewska-Zięba, R. Leboda, and S. Khainakov

use of an analyser of porosity and specific surface area (Micromeritics ASAP 2020, USA) at −196 °C. The total surface area was calculated by the BET method; the volume of pores and the pore-size distribution were obtained with the use of the BJH method

Restricted access
Reaction Kinetics, Mechanisms and Catalysis
Authors: Susana Pinto-Castilla, Santiago Marrero, Yraida Díaz, Joaquín L. Brito, Pedro Silva, and Paulino Betancourt

volume and pore size distribution were obtained from N 2 adsorption–desorption isotherms which were collected with a Micromeritics ASAP 2010C system at −196 °C using the conventional BET and BJH methods. The samples were degassed at 250 °C for 2 h before

Restricted access

laws for pore size distributions . Soil Science . 117 . 311 – 314 . C alzolari , C. , U ngaro , F. , F ilippi , N. , G uermandi , M. , M alucelli , F. , M archi , N

Restricted access

/Hβ-c N 2 adsorption–desorption isotherm, pore size distribution and pore volume Fig. 3a presents the N 2 adsorption–desorption isotherms for the three catalysts. It can be seen that the steep rise started from P/P 0 = 0 and the

Restricted access
Journal of Thermal Analysis and Calorimetry
Authors: Jiří Kučerík, Petra Bursáková, Alena Průšová, Lucie Grebíková, and Gabriele Ellen Schaumann

drying and wetting cycles, hydration time, and the type of water binding [ 10 ]. The quality of studied organic material and its pore size distribution plays a significant role in hydration kinetics as well [ 12 ]. After the absorption of water, size of

Restricted access