🔍
Measurement of Surface Areas for Porous and Particulate Materials
Case ID:
C15452
Report of Invention:
8/23/2018
Web Published:
10/10/2019
Unmet Need
Properties of a material such as catalysts or the capacity of a material to capturing toxic gases can be highly dependent on the surface area accessible by the desired molecule. In general, the more porous a material, the higher the surface area. However, the increase in surface area from making something more porous with smaller and smaller pores does not always increase the desired function once pores reach a critical size.
The standard method for measuring the surface area of porous materials is the BET method. While the BET method works well for macroporous materials, as the size of the pores approach the microscale and smaller (50 nm and smaller), the values obtained from BET measurements are false. Due to the condensation of adsorbate molecules in the pores of these microporous materials during the BET test, the value obtained tends to be a measure of void volume or pore volume instead of surface area.
Technology Overview
Johns Hopkins researchers have developed a method to measure the thermodynamic adsorption capacity as opposed to the geometric capacity measured by the BET method. This thermodynamic capacity is a measurement of how much of a given adsorbate molecule can be adsorbed at the point where the repulsions of other molecules is balanced by the attractive forces of the surface of a material. The measurements can be done using field conditions for molecule capturing materials, such as the desired molecule/temperature/pressure/etc., to give a true measurement of adsorptive capacity.
Stage of Development
The researchers thus far have developed the method.
Publications
N/A
Patent Information:
Title
App Type
Country
Serial No.
Patent No.
File Date
Issued Date
Expire Date
Patent Status
SURFACE AREA DETERMINATION FOR POROUS AND PARTICULATE MATERIALS
PCT: Patent Cooperation Treaty
United States
17/309,268
5/13/2021
Pending
Direct Link:
https://jhu.technologypublisher.com/technology/36564
Inventors:
Category(s):
Technology Classifications > Engineering Tech, Technology Classifications > Computers, Electronics & Software > Algorithms,
Get custom alerts for techs in these categories/from these inventors:
Subscribe for JHTV Updates
For Information, Contact:
Lisa Schwier
lschwie2@jhu.edu
410-614-0300
Save This Technology:
Bookmark this page
Download as PDF
JHTV Home
|
Search
|
Login/Subscribe
2017 - 2022 © Johns Hopkins Technology Ventures. All Rights Reserved. Powered by
Inteum