ASTM D3908-03(2008)


Standard Test Method for Hydrogen Chemisorption on Supported Platinum Catalysts by Volumetric Vacuum MethodASTM International / 01-Apr-2008 / 5 pages

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

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