No products
View larger New product
1.1 This test method covers the determination of nitrogen adsorption and desorption isotherms of catalysts and catalyst carriers at the boiling point of liquid nitrogen.2 A static volumetric measuring system is used to obtain sufficient equilibrium adsorption points on each branch of the isotherm to adequately define the adsorption and desorption branches of the isotherm. Thirty points evenly spread over the isotherm is considered to be the minimum number of points that will adequately define the isotherm.
| Author | ASTM |
|---|---|
| Editor | ASTM |
| Document type | Standard |
| Format | File |
| Confirmation date | 2015-04-01 |
| ICS | 17.060 : Measurement of volume, mass, density, viscosity 71.040.30 : Chemical reagents |
| Number of pages | 6 |
| Replace | ASTM D4222-03(2008) |
| Set | ASTMVOL0506 |
| Year | 2003 |
| Document history | ASTM D4222-03(2008) |
| Country | USA |
| Keyword | ASTM 4222;ASTM D4222;ASTM D4222;10.1520/D4222-03R15E01 |