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ASTM D3908-99

Historical Revision

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

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1.1 This test method covers the determination of the chemisorption of hydrogen at 298 K (25&#176C) on supported platinum catalysts that have been reduced in flowing hydrogen at 723 K (450&#176C). It incorporates a static volumetric vacuum technique at constant volume. </p> <p>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.</p> <p>1.3 This standard does not purport to address all of the safety problems, 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. </p>


SDO ASTM: ASTM International
Document Number D3908
Publication Date April 10, 1999
Language en - English
Page Count 5
Revision Level 99
Supercedes
Committee D32.01
Publish Date Document Id Type View
Oct. 1, 2020 D3908-20 Revision
Oct. 1, 2003 D3908-03 Revision
April 10, 1999 D3908-99 Revision
April 1, 2015 D3908-03R15 Reaffirmation
April 1, 2008 D3908-03R08 Reaffirmation