Method for the synthesis of iodobenzene
AssigneeMontedipe S.p.A.
InventorsGiuseppe Paparatto, Marco Saetti
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Abstract
A method for the synthesis of iodobenzene by iodination, in the gaseous phase, of benzene with iodine, in the presence of a zeolitic catalyst, selected from the group comprising the zeolites of X type or of Y type, characterized in that said iodination is an oxidative one and that said zeolites are in a form different from the acid (H) form.
Claims11
A method for the synthesis of iodobenzene at 200.degree.-500.degree. C., characterized in that iodine, benzene and air or other gas containing molecular oxygen, are brought into contact, in the gaseous phase, with at least one zeolite of the X or the Y type, such zeolite having been exchanged with sodium.
A method for the synthesis of iodobenzene, characterized in that iodine, benzene and air or other gas containing molecular oxygen, are brought into contact, in the gaseous phase and at 300.degree.-450.degree. C., with at least one zeolite of the 13X or NaY type, the air:iodine ratio being higher than or equal to the stoichiometric ratio, the space velocity ranging from 1 to 20 Kg/h of benzene per Kg of pure zeolite, binder excluded, and said iodine being fed as a 5-20% by weight benzenic solution.
A method for the synthesis of iodobenzene, characterized in that iodine, benzene and air or other gas containing molecular oxygen, are brought into contact, in gaseous phase and at 300.degree. C. to 450.degree. C., with at least one zeolite of the 13X or NaY type, the air:iodine ratio being higher than or equal to the stoichiometric ratio, the space velocity ranging from 1 to 20 Kg/h of benzene per Kg of pure zeolite, binder excluded, said iodine being fed as a 5 to 20% by weight benzenic solution.
Dependencies are inferred from the claim text.