ASTM UOP 905 : 2008
Current
The latest, up-to-date edition.
Platinum Agglomeration by X-Ray Diffraction
Hardcopy , PDF
English
14-07-2008
Important note : Users cannot be edited or removed once added to your Multi user PDF.Describes the extent of platinum agglomeration in reforming catalysts, i.e., the fraction of the platinum in the sample that has agglomerated into crystallites larger than 3.5 nm, using X-ray diffraction.
| DocumentType |
Standard
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| Pages |
12
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| PublisherName |
American Society for Testing and Materials
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| Status |
Current
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This method is for determining the extent of platinum agglomeration in reforming catalysts, i.e., the fraction of the platinum in the sample that has agglomerated into crystallites larger than 3.5 nm, using X-ray diffraction. These materials generally contain between 0.2 to 0.4 mass-% platinum on predominantly gamma-alumina support. This method can also be used for qualitatively determining the alumina types present in the sample.
Catalyst samples may be either fresh, spent or regenerated, as typical levels of carbon, sulfur and moisture associated with these samples do not interfere. Reforming catalysts containing less than 2% zeolitic materials may also be analyzed. Samples where the platinum has formed an alloy with other metals such as tin, rhodium, rhenium or iron cannot be analyzed by this method.
| ASTM UOP 896 : 1993 | Platinum in Spent Catalyst |
| ASTM U 04 : 2013 | Platinum in Fresh Catalysts by Spectrophotometry |
| ASTM U 09 : 2013 | Precision Statements in UOP Methods |
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