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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
Automatische name übersetzung:
Standardtestverfahren für Einzelpunkt-Bestimmung der spezifischen Oberfläche von Katalysatoren und Katalysatorträger mit Stickstoff Adsorption von Continuous-Flow-Methode
NORM herausgegeben am 1.4.2013
Informationen über die Norm:
Bezeichnung normen: ASTM D4567-03(2013)
Anmerkung: UNGÜLTIG
Ausgabedatum normen: 1.4.2013
SKU: NS-27730
Zahl der Seiten: 4
Gewicht ca.: 12 g (0.03 Pfund)
Land: Amerikanische technische Norm
Kategorie: Technische Normen ASTM
Kategorie - ähnliche Normen:
Die Annotation des Normtextes ASTM D4567-03(2013) :
Keywords:
adsorption, catalyst carriers, catalysts, continuous flow, surface area, ICS Number Code 71.040.30 (Chemical reagents)
Ergänzende Informationen
| Significance and Use | ||||||||||
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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. |
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| 1. Scope | ||||||||||
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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. |
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| 2. Referenced Documents | ||||||||||
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Ähnliche Normen:
Historisch
1.3.2013
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1.4.2010
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1.8.2011
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1.12.2013
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1.10.2011
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1.12.2013
