UOP 924

Nickel Tungsten Sodium and Aluminum in Hydrocracking Catalysts by ICP-AES

Published by	Publication Date	Number of Pages
UOP	2000	8

UOP 924 – Nickel Tungsten Sodium and Aluminum in Hydrocracking Catalysts by ICP-AES

This method is for determining nickel(Ni) tungsten(W) sodium(Na) and aluminum(Al) in fresh alumina or alumino-silicate supported catalysts by inductively coupled plasma atomic emission spectroscopy (ICP-AES). The method is suitable for the determination of elements from the low ppm to high mass percent concentration ranges. The determination of Ni W Na and Al is described herein however many other elements which are brought into solution during the described sample decomposition can be also determined. Because of incomplete dissolution catalysts containing alpha- or theta-alumina phases cannot be analyzed by this method however it can be applied if a modified sample dissolution technique such as a TeflonTM lined pressure vessel (not described herein) is utilized.

This method can also be used for spent catalyst after suitable pretreatment.