GB831639A - Improvements in or relating to method and apparatus for the estimation of surface areas of solids - Google Patents
Improvements in or relating to method and apparatus for the estimation of surface areas of solidsInfo
- Publication number
- GB831639A GB831639A GB1376158A GB1376158A GB831639A GB 831639 A GB831639 A GB 831639A GB 1376158 A GB1376158 A GB 1376158A GB 1376158 A GB1376158 A GB 1376158A GB 831639 A GB831639 A GB 831639A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sample
- gas
- adsorbed
- adsorbate
- gases
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000007787 solid Substances 0.000 title 1
- 239000007789 gas Substances 0.000 abstract 8
- 239000002156 adsorbate Substances 0.000 abstract 3
- 239000000463 material Substances 0.000 abstract 2
- 239000008246 gaseous mixture Substances 0.000 abstract 1
- 239000003701 inert diluent Substances 0.000 abstract 1
- 239000000203 mixture Substances 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 239000011343 solid material Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/088—Investigating volume, surface area, size or distribution of pores; Porosimetry
- G01N15/0893—Investigating volume, surface area, size or distribution of pores; Porosimetry by measuring weight or volume of sorbed fluid, e.g. B.E.T. method
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
831,639. Surface area estimating apparatus. BATAAFSCHE PETROLEUM MAATSCHAPPIJ N.V., DE. April 30, 1958, No. 13761/58. Drawings to Specification. Class 40 (1). A method of estimating the surface area of a solid material comprises passing a stream of a gaseous mixture of an adsorbate and an inert diluent gas over a known quantity of the material at a temperature such that the adsorbate is not adsorbed, then lowering the temperature of the material so that the adsorbate is selectively adsorbed and measuring the amount of gas adsorbed at the lower temperature. The apparatus comprises means for supplying known constant streams of both gases to the sample, means for sensing and recording the concentrations of the gases, and means for adjusting and maintaining the sample at two widely spaced temperatures. Preferably the concentrations of the gases are measured by thermal conductivity cells in the gas streams before and after the sample, the two cells being arranged in a bridge circuit whose output is fed to a recording self-balancing potentiometer. When the sample is cooled or heated the change in composition of the gas flowing through the second cell unbalances the bridge circuit which unbalance is recorded by the potentiometer over a period of time as a peak on the recorder trace. The area under the peak, measured by a planimeter, is a measure of the gas adsorbed or desorbed by the sample under test, and therefore of the surface area of the sample.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1376158A GB831639A (en) | 1958-04-30 | 1958-04-30 | Improvements in or relating to method and apparatus for the estimation of surface areas of solids |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1376158A GB831639A (en) | 1958-04-30 | 1958-04-30 | Improvements in or relating to method and apparatus for the estimation of surface areas of solids |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB831639A true GB831639A (en) | 1960-03-30 |
Family
ID=10028877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1376158A Expired GB831639A (en) | 1958-04-30 | 1958-04-30 | Improvements in or relating to method and apparatus for the estimation of surface areas of solids |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB831639A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112074341A (en) * | 2018-05-04 | 2020-12-11 | 堀场仪器株式会社 | System and dynamic volume method for surface characterization of porous solid and powder materials using flowing gas |
| CN113866070A (en) * | 2021-11-19 | 2021-12-31 | 郑州大学 | Device and method for measuring micro surface area of macroporous material |
-
1958
- 1958-04-30 GB GB1376158A patent/GB831639A/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112074341A (en) * | 2018-05-04 | 2020-12-11 | 堀场仪器株式会社 | System and dynamic volume method for surface characterization of porous solid and powder materials using flowing gas |
| US11828695B2 (en) | 2018-05-04 | 2023-11-28 | Horiba Instruments Incorporated | Surface characterization of porous solids and powder materials using flowing gas |
| CN113866070A (en) * | 2021-11-19 | 2021-12-31 | 郑州大学 | Device and method for measuring micro surface area of macroporous material |
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