Process for regenerating an impure catalyst comprising sulphuric acid deposited on silica
AssigneeInstitut Francais du Petrole
InventorsJean-Francois Joly, Eric Benazzi, Frederic Chaigne, Jean-Yves Bernhard, Jean-Charles Viltard
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Abstract
The invention concerns a process for regenerating an impure catalyst comprising sulphuric acid deposited on silica. It is characterized in that the catalyst is calcined at least once to eliminate organic hydrocarbon substances contained in the catalyst, in particular as a result of its use in aliphatic alkylation reactions.
Claims19
A process for the purification of an alkylation catalyst of sulphuric acid deposited on silica, which contains at least 0.1% by weight, expressed as carbon atoms, of organic material in free or combined form as an impurity, which process comprises:
- calcining said catalyst in a gas stream at a temperature of from 100.degree. C. to 400.degree. C. to remove at least a portion of the impurity.
Dependencies are inferred from the claim text.