ASTM-D3908 2008

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D3908-03(2008) Standard Test Method for Hydrogen Chemisorption on Supported Platinum Catalysts by Volumetric Vacuum Method

Published By	Publication Date	Number of Pages
ASTM	2008	5

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Description

ASTM D3908-03-Reapproved2008

Historical Standard: Standard Test Method for Hydrogen Chemisorption on Supported Platinum Catalysts by Volumetric Vacuum Method

ASTM D3908

Scope

1.1 This test method covers the determination of the chemisorption of hydrogen at 298 K (25°C) on supported platinum catalysts that have been reduced in flowing hydrogen at 723 K (450°C). It incorporates a static volumetric vacuum technique at constant volume.

1.2 The test method is intended for use on unused supported platinum on alumina catalysts of loadings greater than 0.3 weight %. Data on other supports and lower platinum loadings were not tested.

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.

Keywords

chemisorption; hydrogen chemisorption; platinum catalysts; volumetric method; Hydrogen content–petroleum products; Hydrogen uptake data; Platinum catalysts; Supported platinum catalysts; Vacuum testing–petroleum products; Volumetric measurement–petroleum products; Alumina-base catalysts; Catalysts/catalyst carriers; Chemisorption

ICS Code

ICS Number Code n/a

DOI: 10.1520/D3908-03R08

PDF Catalog

PDF Pages	PDF Title
1	Scope Referenced Documents Terminology
2	Significance and Use Apparatus Reagents Safety Hazards Volume Calibrations
3	Charging Sample Air Calcination Sample Reduction FIG. 1 FIG. 2
4	Procedure: Hydrogen Up-Take Dead Space Calculation for Manifold Calibration Calculation for Dead Space Volume Vd VmPmPmd 1 (2) Calculation for Hydrogen Chemisorption (Adsorption Method) Precision and Bias
5	Construction of Isotherm Calculation of Monolayer Volume and Dispersion Keywords

Additional information

Standard Title	D3908-03(2008) Standard Test Method for Hydrogen Chemisorption on Supported Platinum Catalysts by Volumetric Vacuum Method
Published Code	ASTM
Publication Date	2008
Pages Count	5