Abstract A new composition of matter, a method for the preparation of a copper-exchanged Type X structured zeolite and a separation process employing the same. The zeolite sorbent is prepared by a procedure employing an aqueous ion exchange step and a final activation step including contacting a copper-exchanged zeolite with a mixture containing a cuprous salt and a hydrocarbon. The process involves the selective separation of olefinic hydrocarbons from saturated hydrocarbons and employs a Type X structured zeolite containing copper cations at a portion of the cationic exchange sites within the zeolite. The olefins are selectively retained by the sorbent and are removed in a concentrated form by a desorption step.
The process of claim 1 further characterized in that said hydrocarbon feed contains olefins having from about six to 20 carbon atoms per molecule.
Claim 2
Dependent Claim
39 words
The process of claim 1 further characterized in that said adsorption and desorption conditions include temperatures within the range of from about 25*C. to about 150*C. and pressures within the range of from about atmospheric to about 500 psig.
Claim 3
Dependent Claim
19 words
The process of claim 3 further characterized in that said adsorption and desorption conditions are effected in liquid phase.
Claim 4
Dependent Claim
22 words
The process of claim 1 further characterized in that said mixture comprising a hydrocarbon and a cuprous salt contains an olefinic hydrocarbon.