ASTM D 3908 : 2003
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
View Superseded by
Standard Test Method for Hydrogen Chemisorption on Supported Platinum on Alumina Catalysts and Catalyst Carriers By Volumetric Vacuum Method
Hardcopy , PDF
11-11-2014
English
01-10-2003
Important note : Users cannot be edited or removed once added to your Multi user PDF.CONTAINED IN VOL. 05.05, 2015 Defines the determination of the chemisorption of hydrogen at 298 K (25 degrees C) on supported platinum catalysts that have been reduced in flowing hydrogen at 723 K (450 degrees C).
| Committee |
D 32
|
| DocumentType |
Test Method
|
| Pages |
5
|
| ProductNote |
Reconfirmed 2003
|
| PublisherName |
American Society for Testing and Materials
|
| Status |
Superseded
|
| SupersededBy | |
| Supersedes |
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.
| ASTM E 177 : 2014 : REDLINE | Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods |
Access your standards online with a subscription
Features
-
Simple online access to standards, technical information and regulations.
-
Critical updates of standards and customisable alerts and notifications.
-
Multi-user online standards collection: secure, flexible and cost effective.