Titlebook: Characterization of Porous Solids and Powders: Surface Area, Pore Size and Density; S. Lowell,Joan E. Shields,Matthias Thommes Book 2004 S

怒目而视

Vacuum Volumetric Measurement (Manometry)ted manometer, and a coolant. Fig.14.1a describes a historical set-up using an Hg-volume manometer instead of a pressure transducer; the volumes V., V., and V. correspond to the calibrated reference volume in Fig. 14.1b, which refers to a simplified, modern static volumetric sorption apparatus.

谄媚于人

Mercury Porosimetry: Intra and Inter-Particle Characterizationssivate the surface. The exact pore size range that can be measured depends predominantly on the instrument pressure range but also on the contact angle employed in the Washburn equation. The largest pore size that can be determined is limited by the lowest filling pressure attainable and the smallest pore size by the highest pressure achievable.

通情达理

LAVE

Gas Adsorptionngle x-ray and neutron scattering (SAXS and SANS), mercury porosimetry, electron microscopy (scanning and transmission), thermoporometry, NMR-methods, and others. Each method has a limited length scale of applicability for pore size analysis. An overview of different methods for pore size characteri

伸展

Adsorption Isotherms fluid-fluid interactions as well as the effects of confined pore space on the state and thermodynamic stability of fluids confined to narrow pores. The International Union of Pure and Applied Chemistry [1] proposed to classify pores by their internal pore width (the pore width defined as the diamet

DOLT

deriver

Delude

Other Surface Area Methodser methods [e.g., 1, 2] including methods based on small angle x-ray scattering and small neutron scattering [3] have been developed. Whereas the scattering methods cannot be used in routine operations (to date at least), immersion calorimetry and in particular permeability measurements are more fre

Valves

Evaluation of Fractal Dimension by Gas Adsorptionilar, i.e., they look similar at all levels of magnification. The geometric topography (roughness) of the surface structure of many solids can be characterized by the fractal dimension, D. In the case of a Euclidean surface D is 2, however for an irregular (real) surface D may vary between 2 and 3.