Separating alpha monoolefins using a steamed faujasite molecular sieve

Claim 1

A PROCESS FOR SEPARATING ALPHA MONOLEFINS FROM HYDROCARBON FEEDSTOCKS CONTAINING THEM WHILE INHIBITING DOUBLE BOND ISOMERIZATION OF SAID ALPHA MONOOLEFINS WHICH COMPRISES CONTACTING A FAUJASITE SORBENT HAVING A SILICA TO ALUMINUM MOLE RATIO OF AT LEAST 3:1 WITH STEAM AT TEMPERATURES RANGING FROM ABOUT 800 TO ABOUT 1600 *F. IN STEAM ATMOSPHERES CONTAINING AT LEAST ABOUT 80 WT. PERCENT STEAM, AND THEREAFTER CONTACTING A HYDROCARBON FEEDSTOCK CONTAINING PREDOMINANTLY A MIXTURE OF POLYOLEFINS AND ALPHA MONOOLEFINS WITH SAID STEAM TREATED FAUJASITE SORBENT AT TEMPERATURES RANGING FROM ABOUT 30* F. TO A TEMPERATURE BELOW THAT AT WHICH SIGNIFICANT FEEDSTOCK CRACKING AND OTHER DELETERIOUS CONVERSIONS OCCUR, AND RECOVERING ESSENTIALLY UNISOMERIZED ALPHA MONOOLEFINS.