scholarly journals Characterization of Hierarchically Ordered Porous Materials by Physisorption and Mercury Porosimetry—A Tutorial Review

2021 ◽  
Vol 8 (4) ◽  
pp. 2002181
Author(s):  
Carola Schlumberger ◽  
Matthias Thommes
Keyword(s):  
Porous Materials ◽  
Mercury Porosimetry ◽  
Ordered Porous

Liquid intrusion and alternative methods for the characterization of macroporous materials (IUPAC Technical Report)

2011 ◽  
Vol 84 (1) ◽  
pp. 107-136 ◽  
Author(s):  
Jean Rouquerol ◽  
Gino Baron ◽  
Renaud Denoyel ◽  
Herbert Giesche ◽  
Johan Groen ◽  
...  
Keyword(s):  
Porous Materials ◽  
Capillary Condensation ◽  
Mercury Porosimetry ◽  
Alternative Methods ◽  
Size Analysis ◽  
Pore Networks ◽  
Statistical Reconstruction ◽  
Technical Report ◽  
Hierarchical Pore

This document deals with the characterization of porous materials having pore widths in the macropore range of 50 nm to 500 μm. In recent years, the development of advanced adsorbents and catalysts (e.g., monoliths having hierarchical pore networks) has brought about a renewed interest in macropore structures. Mercury intrusion–extrusion porosimetry is a well-established method, which is at present the most widely used for determining the macropore size distribution. However, because of the reservations raised by the use of mercury, it is now evident that the principles involved in the application of mercury porosimetry require reappraisal and that alternative methods are worth being listed and evaluated. The reliability of mercury porosimetry is discussed in the first part of the report along with the conditions required for its safe use. Other procedures for macropore size analysis, which are critically examined, include the intrusion of other non-wetting liquids and certain wetting liquids, capillary condensation, liquid permeation, imaging, and image analysis. The statistical reconstruction of porous materials and the use of macroporous reference materials (RMs) are also examined. Finally, the future of macropore analysis is discussed.

A new simulator of mercury porosimetry for the characterization of porous materials

1990 ◽  
Vol 137 (2) ◽  
pp. 315-339 ◽  
Author(s):  
Christos D Tsakiroglou ◽  
Alkiviades C Payatakes
Keyword(s):  
Porous Materials ◽  
Mercury Porosimetry

Solvent-free dynamic nuclear polarization enhancements in organically modified mesoporous silica

2021 ◽  
Author(s):  
Marcos de Oliveira Jr. ◽  
Kevin Herr ◽  
Martin Brodrecht ◽  
Nadia Berenice Haro-Mares ◽  
Till Wissel ◽  
...  
Keyword(s):  
Mesoporous Silica ◽  
Porous Materials ◽  
Structural Characterization ◽  
Dynamic Nuclear Polarization ◽  
High Field ◽  
Nuclear Polarization ◽  
Organically Modified ◽  
Field Dynamic ◽  
Free Dynamic

High-field Dynamic Nuclear Polarization is a powerful tool for the structural characterization of species on the surface of porous materials or nanoparticles. For these studies the main source of polarization...

Characterization of porous materials by small-angle scattering

Pramana ◽  
2004 ◽  
Vol 63 (1) ◽  
pp. 165-173 ◽  
Author(s):  
S. Mazumder ◽  
D. Sen ◽  
A. K. Patra
Keyword(s):  
Porous Materials ◽  
Small Angle ◽  
Small Angle Scattering ◽  
Angle Scattering

Fabrication and characterization of air-impedance electrospun polydioxanone templates

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Gretchen S. Selders ◽  
Allison E. Fetz ◽  
Shannon L. Speer ◽  
Gary L. Bowlin
Keyword(s):  
Tissue Engineering ◽  
Mercury Porosimetry ◽  
Synthetic Polymers ◽  
Pore Analysis ◽  
Exceptional Value ◽  
Preliminary Study ◽  
Fabrication And Characterization ◽  
Fiber Deposition ◽  
Retention Strength

AbstractElectrospinning, a fabrication technique used to create non-woven, porous templates from natural and synthetic polymers, is commonly used in tissue engineering because it is highly tailorable. However, traditional electrospinning creates restrictive pore sizes that limit the required cell migration. Therefore, tissue engineering groups have sought to enhance and regulate porosity of tissue engineering templates. Air-impedance electrospinning generates templates with tailorable, patterned areas of low and high density fiber deposition. Here we demonstrate an improved air-impedance electrospinning system, consisting of a newly designed funnel equipped to hold changeable porous deposition plates and administer air flow in a confined and focused manner, with parameters that maintain template integrity. In this preliminary study, we quantify the increase in porosity of polydioxanone templates with use of traditional fiber and pore analysis as well as with mercury porosimetry. Additionally, we validate the system’s significance in fabricating enhanced porosity templates that maintain their mechanical properties (i.e. elastic modulus, tensile strength, and suture retention strength) despite the deliberate increase in porosity. This is of exceptional value to the template’s integrity and efficacy as these parameters can be further optimized to induce the desired template porosity, strength, and texture for a given application.

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