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Noble Metals and Modifiers in Catalysts by ICP-AES
STANDARD published on 29.7.2002
Designation standards: UOP 873-86
Note: WITHDRAWN
Publication date standards: 29.7.2002
SKU: NS-574961
The number of pages: 6
Approximate weight : 18 g (0.04 lbs)
Country: American technical standard
Category: Technical standards UOP
1. Scope |
This method is for determining platinum, rhodium and rhenium, in fresh and regenerated catalysts composed of alumina or silica/alumina by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES). Additionally, modifiers such as tin, indium, lithium, potassium, cerium and lanthanum can also be determined. Platinum and rhenium can be determined within the concentration range of 0.1 to 1.0 mass-% when a 1-g sample of catalyst is used for the analysis, while rhodium can be determined down to 0.01 mass-%. The tin, indium and lithium concentration range is generally 0.1 to 0.7 mass-%. Potassium, cerium and lanthanum can be determined from 0.5 to several mass-%. The method is sufficiently flexible to add more elemental analyses if needed. |
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