Pore Volume Analysis
Pore Volume Analysis - Related Videos
06:45
Determining Surface Areas and Pore Volumes of Metal-Organic Frameworks
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Cited by 13 •
2024
This article describes the use of nitrogen porosimetry to characterize metal-organic frameworks, using UiO-66 as a representative material.
11:38
Volume Segmentation and Analysis of Biological Materials Using SuRVoS (Super-region Volume Segmentation) Workbench
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Cited by 10 •
2017
Segmentation of three-dimensional data from many imaging techniques is a major bottleneck in analysis of complex biological systems. Here, we describe the use of SuRVoS Workbench to semi-automatically segment volumetric data at various length-scales using example datasets from cryo-electron tomography, cryo soft X-ray tomography, and phase contrast X-ray tomography techniques.
08:15
Cardiac Pressure-Volume Loop Analysis Using Conductance Catheters in Mice
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Cited by 33 •
2015
Cardiac pressure-volume loop analysis is the most comprehensive way to measure cardiac function in the intact heart. We describe a technique to perform and analyze cardiac pressure volume loops, using conductance catheters.
01:23
Pore Size Distribution
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2024
In concrete, the pore size distribution significantly influences the material's properties. Capillary pores, markedly larger than gel pores, form a vast network within partially hydrated cement paste, reducing the concrete's strength and increasing its permeability. This heightened permeability leads to a greater risk of damage from environmental factors like freeze-thaw cycles and chemical attacks, with the extent of vulnerability also being tied to the water-to-cement ratio. Adequate...
12:19
Multi-Scale Modification of Metallic Implants With Pore Gradients, Polyelectrolytes and Their Indirect Monitoring In vivo
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Cited by 4 •
2013
In this video, we will demonstrate modification techniques for porous metallic implants to improve their functionality and to control cell migration. Techniques include development of pore gradients to control cell movement in 3D and production of basement membrane mimics to control cell movement in 2-D. Also, a HPLC-based method for monitoring implant integration in-vivo via analysis of blood proteins is described.
FAQs
Gas adsorption and desorption data form an isotherm by recording how an adsorbate interacts with a porous solid as pressure is controlled. As the adsorbate occupies available pores, the measured response reflects the material’s internal empty space. Interpreting this relationship allows researchers to estimate total pore volume and assess how that volume is distributed among different pore sizes.
Total pore volume indicates how much internal space a material provides, but pore-size distribution shows how that space is arranged. This distinction matters because pore dimensions influence surface accessibility, movement of gases and liquids, and the transport of dissolved substances. Two materials with similar total volumes can therefore behave differently in catalysis, adsorption, membranes, or separations.
Interpretation depends on how the porous structure presents accessible internal space to the adsorbate. Surface accessibility, pore dimensions, and pathways for diffusion all affect the measured adsorption and desorption response. Consequently, the result is most useful when considered as a structural characterization rather than as an isolated number, especially when comparing untreated and chemically modified materials.
A typical workflow uses a porous solid and a selected adsorbate under controlled pressure conditions. The experiment records adsorption and desorption behavior to produce an isotherm. Researchers then interpret that dataset to estimate total pore volume and pore-size distribution, using the resulting structural information to compare materials or evaluate how processing has altered their porosity.
The measurement is valuable when internal structure may control performance. In catalysts, pore volume and size distribution help relate accessible regions to reaction efficiency. For adsorbents, they help evaluate how much space is available for storing gases, liquids, or dissolved substances. These results support material design, quality control, and comparisons among candidate porous solids.
Researchers can compare adsorption-derived pore volumes and size distributions before and after processing or chemical treatment. Differences in the resulting structural parameters indicate that the accessible pore network has changed, even when the material’s broader identity remains the same. Such comparisons help connect treatment conditions with changes in diffusion, surface accessibility, separation performance, or reaction-related behavior.