UOP 0905
1. Scope

This method is for the qualitative identification of the presence of platinum agglomeration and types of alumina in reforming catalysts using X-ray diffraction. These materials generally contain between 0.2 to 0.4 mass-% platinum on predominantly gamma-alumina support.

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. Platinum alloys with other metals such as tin, rhodium, rhenium or iron can also be identified by displacement of the Pt peak from expected position. If this occurs, additional types of analysis such as STEM can be used to identify the type of alloy if needed. Refer to the Appendix for quantification of Pt agglomeration.