MIXED METAL OXIDIC NANO SHEETS COATED MONOLITHIC CATALYSTS USEFUL FOR THE DECOMPOSITION OF TOXIC N2O AND A PROCESS FOR THE PREPARATION THEREOF

摘要

The present invention describes process of preparation of inter-polymer film of p-methylstyrene-co-divinylbenzene and its conversion into anion exchange membrane through a greener route which dispenses with the use of chloromethyl ether. The membrane with polyethylene binder is shown to have equivalent or even superior performance to anion exchange membrane prepared from styrene-co-divinylbenzene/polyethylene through chloromethyl ether route.

主权项

1. A process for the preparation of inter-polymer anion exchange membrane wherein the said process comprising the steps of:
a) preparing an inter-polymer film of p-methylstyrene-co-divinyl benzene ((p-MS-co-DVB)/binder by adding p-methylstyrene as monomer, divinylbenzene as crosslinker, benzoyl peroxide as radical initiator either neat or into a solution of PVC in a solvent under stirring at temperature ranging between 60-70° C. for a period ranging between 3-5 h in followed by pouring the said solution on a glass plate and casting subsequently drying at temperature ranging between 11-14 hrs at 25-35° C. to obtain inter-polymer film; b) optionally, preparing an inter-polymer film by adding mixture of p-methylstyrene, divinylbenzene, benzoyl peroxide and toluene into melted mixture of binder under constant stirring at 80-95° C. for a period ranging between 3-5 hrs followed by increasing the temperature ranging between 130-140° C. to distill out the solvent from the polymer mixture to obtain noodles and cutting into small pellets subsequently keeping the said pellets in an oven at 75-80° C. for a period ranging between 12-16 hrs and after curing converting pellets into inter-polymer film; c) benzylic haloginating the inter-polymer film as obtained in step (a) or (b) by treating inter-polymer film with a halogenations agent in mole ratio 1:1 to 2.5:1 in respect of p-methyl styrene, benzoyl peroxide and chlorinated solvent under stirring at temperature ranging between 75-80° C. for a period ranging 5-10 hrs under photo irradiation to obtain halogenated inter polymer film; d) providing quaternization of halogenated inter-polymer film as obtained in step (b) to obtain inter-polymer anion exchange membrane