Selective catalytic conversion

Claim 1

A PROCCESS FOR SELECTIVELY CONDUCTING AN ORGANIC CHEMICAL REACTION WHICH COMPRISES CARRYING OUT A REACTION INVOLVING CONTACT OF AT LEAST TWO MOLECULAR SPECIES OF DIFFERING SHAPE WITH A CRYSTALLINE ALUMINOSILICATE ZEOLITE MOLECULAR SIEVE MATERIAL, BEARING WITHIN THE INTERIOR THEREOF AN ADDED CATALYST, INTRODUCED INTO THE ZEOLITE SUBSEQUENT TO FORMATION THEREOF, AND ACTIVE IN EFFECTING CONVERSION OF AT LEAST ONE OF SAID SPECIES CONTAINED WITHIN THE PORES OF SAID ZEOLITE, WHICH ZEOLITE HAS UNIFORM INTERSTITIAL DIMENSIONS SUFFICIENTLY LARGE TO AFFORD THE RELEASE FROM SAID PORES OF THE PRODUCT OF SAID CONVERSION BUT SUFFICIENTLY SMALLER TO EXCLUDE FROM SAID PRODUCT MOLECULAR SPECIES OF LARGER SIZE, EFFECTING CATALYTIC CONVERSION OF AT LEAST ONE OF SAID SPECIES CONTAINED WITHIN THE PORES OF SAID ZEOLITE TO A MATERIAL CHEMICALLY DISTINCT THEREFROM AND OF A MOLECULAR SHAPE CAPABLE OF PASSING FROM THE INTERIOR OF SAID ZEOLITE AND SIMULTANEOUSLY WITHDRAWING, WITHOUT SUBSTANTIALLY CHANGE IN PRESSURE OF THE SYSTEM, THE PRODUCT SO OBTAINED FROM THE RESULTANT EFFLUENT STREAM.