I prepared different copper loading's on alumina support and when I measured the acidity, it was increasing with small loading of copper (i.e. 1, 2, 3 or 4% Cu/ Al2O3), any one has explanation please?
Thanks
It is difficult to advance an hypothesis without knowing details of what you are doing, but if your environment is water, copper corrosion can be at the origin of your observation:
2Cu + H2O ----> Cu2O + 2H+
Thanks for your answer, X. Ramón Nóvoa
Do you mean that Copper oxide (Cu2O) can act as acidic sites ? so it increased the acidity of the catalyst
Thanks
Ahmed
I am satisfied with Mr. X. Ramon Novoa,
It has been proved that support for the metal or metal oxide should be acidic in
nature. For more details kindly follow the link below...
http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.463.6890&rep=rep1&type=pdf
Dear Colleague Varun
Thanks for your answer. Do you think alumina oxide and copper oxide have relatively similar acidity, because from the results I have it showed similar acidity
Thanks
Ahmed
Dear Mr. Ahmed,
Ideally it should not be the same as the charge distribution is different over both the metal ions, but again it depends on the physical environment present around. And this may be a reason you are getting the similar acidity for both
.
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