Potrebujeme váš súhlas na využitie jednotlivých dát, aby sa vám okrem iného mohli ukazovať informácie týkajúce sa vašich záujmov. Súhlas udelíte kliknutím na tlačidlo „OK“.
Standard Test Method for Determination of Nitrogen Adsorption and Desorption Isotherms of Catalysts and Catalyst Carriers by Static Volumetric Measurements (Includes all amendments And changes 11/3/2020).
Automaticky preložený názov:
Štandardná skúšobná metóda na stanovenie dusíka Adsorpcia a desorpcia izotermy katalyzátorov a nosičov katalyzátorov statickými objemovej meranie
NORMA vydaná dňa 1.4.2015
Označenie normy: ASTM D4222-03(2015)e1
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.4.2015
Kód tovaru: NS-613743
Počet strán: 6
Približná hmotnosť: 18 g (0.04 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Chemická činidla
Měření objemu, hmotnosti, hustoty, viskozity
Keywords:
adsorption, catalysts, desorption, isotherms, nitrogen gas, volumetric,, ICS Number Code 17.060 (Measurement of volume, mass, density, viscosity), 71.040.30 (Chemical reagents)
Significance and Use | ||||||||||
5.1 The test method has two main functions: first, it provides data useful for establishing the pore size distribution of catalyst materials, which in turn may influence their performance; and second, it serves as a laboratory test which may be used to study porosity changes that may occur during the manufacture and evaluation of catalysts. |
||||||||||
1. Scope | ||||||||||
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.1.2 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. |
||||||||||
2. Referenced Documents | ||||||||||
|
Posledná aktualizácia: 2024-05-13 (Počet položiek: 2 898 634)
© Copyright 2024 NORMSERVIS s.r.o.