I am studying the kinetics for paraffin dehydrogenation over Pt-Sn /Al2O3 catalyst. I need to find the activity of the catalyst. Kindly help with this. Thanks.
Hi Suresh, I suggest to perform an electrochemical test using the potentiostat, use methods such as cyclic vcoltommetry (could induce eletro-oxidation - same as dehydrogenation) & EIS will give you information about the catalyst activities, efficiency, kinetic information, transport resistance...etc. Of course you have first dissolve the paraffin in a conduct solution (acidic or basic depending on your pH requirements).
If you don't have the access to a potentionstat, then I recommend to use the chemical methods for dehydrogenation reaction of parafin (you have to do your own research on the related papers)
For the analytic techniques you could use: UV-vis, GC/MS, FITR, HPLC
best!
Activity of the catalysts can be determined in terms of TOF number. TOF is defined as the average numbers of chemical reactions happened on active sites per hour. To get the TOF, you need the conversion of products, which can be determined by GC, and then you need to measure the active sites of you catalyst.
Dear Sir,
Useful Information. Thanks for your advice. Ranjit Kumar
The measure of the activity of a stable catalyst is conversion related to a unit of time. The situation is different in the case of catalysts that undergo a deactivation process. Here, the measure of activity is the ratio of reaction rate in the presence of current catalyst and the rate in the presence of fresh catalyst. It is a dimensionless and time dependent quantity.
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