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Submitted Chris Haslego, Nov 21 2011 11:21 AM | Last updated Nov 21 2011 01:29 PM




Category: Reactions and Processes
Question: Is there a good way to recover platinum and rhenium from the spent aromatization catalyst of naphta processing?
Keywords: spent,catalyst,ion,exchange,rhenium,platinum,anionic,resin
Answer: This paper presents the recovery of the nobel metals , platinum and rhenium from the spent aromatization catalyst of naphta using anion exchange resins. the catalyst is solved in a mixture of sulphuric acid and aqua regia , and the produced solution is passed through the columns which contain the ion exchange resins . The platinum and rhenium that exist in the solution are adsorbed on the resin , then the resin is washed by the means of a suitable acid and platinum and rhenium are desorbed from resin. The different parameters which affect the process of desorbtion and adsorption are also considered and the best condition for the maximum efficiency is determined. The efficiency has been 100% in the adsorption process and over 95 % in the desorbtion process.
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