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NEPLATNÁ ASTM D4567-03(2013) 1.4.2013 náhľad

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ASTM D4567-03(2013)

Standard Test Method for Single-Point Determination of Specific Surface Area of Catalysts and Catalyst Carriers Using Nitrogen Adsorption by Continuous Flow Method

Automaticky preložený názov:

Štandardná skúšobná metóda pre Single-Point Stanovenie merného povrchu katalyzátora a katalyzátora dopravcov, ktorí využívajú adsorpciou dusíka kontinuálne metódou Flow

NORMA vydaná dňa 1.4.2013

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Dostupnosť	SKLADOM
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61.50 €

Informácie o norme:

Označenie normy: ASTM D4567-03(2013)
Poznámka: NEPLATNÁ
Dátum vydania normy: 1.4.2013
Kód tovaru: NS-27730
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM

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Chemická činidla

Anotácia textu normy ASTM D4567-03(2013) :

Keywords:
adsorption, catalyst carriers, catalysts, continuous flow, surface area, ICS Number Code 71.040.30 (Chemical reagents)

Doplňujúce informácie

Significance and Use

5.1 This test method is useful for determining the specific surface area of catalysts and catalyst carriers for material specifications, manufacturing control, and research and development in the evaluation of catalysts.

1. Scope

1.1 This test method covers the single-point determination of the surface area of catalysts and catalyst carriers that exhibit Type II or Type IV nitrogen adsorption isotherms using a nitrogen-helium flowing gas mixture. This test method is applicable for the determination of total surface areas from 0.1 to 300 m², where rapid surface area determinations are desired.

1.2 Because the single-point method uses an approximation of the BET equation, the multipoint BET method (Test Method D3663) is preferred to the single-point method.

1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of whoever uses this standard to consult and establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

2. Referenced Documents

D3766-24a	Standard Terminology Relating to Catalysts and Catalysis (Includes all amendments and changes 3/6/2024).
D3663-20	Standard Test Method for Surface Area of Catalysts and Catalyst Carriers
E691-23	Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E177-20	Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E456-13a(2022)	Standard Terminology Relating to Quality and Statistics (Includes all amendments and changes 4/21/2022).