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WITHDRAWN UOP 823-90 29.7.2002 preview

Preview of the standard

UOP 823-90

Platinum in Fresh Platinum-Rhenium Catalysts by Spectrophotometry



STANDARD published on 29.7.2002


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The information about the standard:

Designation standards: UOP 823-90
Note: WITHDRAWN
Publication date standards: 29.7.2002
SKU: NS-574930
The number of pages: 11
Approximate weight : 33 g (0.07 lbs)
Country: American technical standard
Category: Technical standards UOP

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Preview of the standard UOP 823-90

 
1. Scope

This method is for determining platinum in fresh gamma-alumina catalysts containing rhenium but not molybdenum. Elements that produce colored ions in the color-development step, such as rhenium, constitute a positive interference, however, compensation for these interfering elements is made with an isoamyl acetate extraction. Concentrations of silica up to approximately 150 ppm do not interfere.
 

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