Patent ID: 9598331
Date: 2017-03-21
CPC Classifications: B01J,C07C

Claim:
1. A process for the production of olefins, the process comprising: (a) contacting propylene and a hydrocarbon mixture comprising a mixture of olefins having a carbon number n with a first metathesis catalyst to form a metathesis product comprising a beta-olefin having a carbon number n+1, an alpha-olefin having a carbon number n−1, as well as any unreacted propylene and olefins having a carbon number n; (b) fractionating the metathesis product to recover a fraction comprising the beta-olefin having a carbon number n+1; (c) contacting ethylene and the fraction comprising the beta-olefin having a carbon number n+1 with a second metathesis catalyst to form a second metathesis product comprising an alpha-olefin having a carbon number n and propylene; and (d) fractionating the second metathesis product to form a propylene fraction and a fraction comprising the alpha olefin having a carbon number n, wherein n is selected from the range of 4 to about 8.