ASTM-UOP823 › Historical Revision Information
Platinum in Fresh Platinum-Rhenium Catalysts by Spectrophotometry

ASTM-UOP823 - WITHDRAWN - CANCELLED
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Platinum in Fresh Platinum-Rhenium Catalysts by Spectrophotometry
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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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Document Number

ASTM-UOP823

Revision Level

WITHDRAWN

Status

Cancelled

Publication Date

Jan. 1, 2019

Document Type

UOP