Method for the synthesis of iodobenzene
AssigneeMontedipe S.p.A.
InventorsGiuseppe Paparatto, Marco Saetti
Life of this patent
Estimating the term…
Abstract
A method for the synthesis of iodobenzene by oxydative iodination in a gaseous phase of benzene with iodine and oxygen, air or another gas containing oxygen, in the presence of a zeolitic catalyst, selected from the group comprising the zeolites of ZSM 5 and ZSM 11 type.
Claims7
In a method for the synthesis of iodobenzene by the catalytic oxidative iodination of benzene, at 200.degree. to 550.degree. C. and in the gaseous phase, with iodine and elemental oxygen or an oxygen-containing gas, the improvement consisting essentially in that the catalyst is selected from the class consisting of zeolites of the ZSM5 type and zeolites of the ZSM11 type, exchanged with a bivalent or trivalent metal cation.
A method for the synthesis of iodobenzene, wherein benzene, iodine and air or another gas containing oxygen, are brought into contact with a zeolite of ZSM 5 type, exchanged with at least a cation selected from the group consisting of Zn.sup.++, Mn.sup.++ and Ca.sup.++, at temperatures ranging between 350.degree. and 450.degree. C. and according to air/I.sub.2 molar ratios equal to or higher than 8, the space velocity ranging between 1 and 100 Kg/h of benzene per Kg of pure zeolite and iodine being fed as a benzenic solution at 5-20% by weight.
Dependencies are inferred from the claim text.