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ASTM International - ASTM UOP905-91

Platinum Agglomeration by X-Ray Diffraction

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Organization: ASTM International
Publication Date: 29 July 2002
Status: inactive
Page Count: 12
scope:

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 is also 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.

Document History

July 14, 2008
Platinum Agglomeration by X-Ray Diffraction
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...
ASTM UOP905-91
July 29, 2002
Platinum Agglomeration by X-Ray Diffraction
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...
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