	US 12,473,244 B2
	Promoters for heterogeneous olefin metathesis
Yuriy Roman, Cambridge, MA (US); Shiran Zhang, Somerville, MA (US); Daniel Consoli, Cambridge, MA (US); and Sohel Shaikh, Dhahran (SA)
Assigned to Massachusetts Institute of Technology, Cambridge, MA (US); and Saudi Arabian Oil Company, Dhahran (SA)
Filed by MASSACHUSETTS INSTITUTE OF TECHNOLOGY, Cambridge, MA (US); and Saudi Arabian Oil Company, Dhahran (SA)
Filed on May 8, 2020, as Appl. No. 16/870,192.
Claims priority of provisional application 62/845,849, filed on May 9, 2019.
Prior Publication US 2020/0354291 A1, Nov. 12, 2020
Int. Cl. C07C 6/04 (2006.01); B01J 21/04 (2006.01); B01J 23/28 (2006.01); B01J 23/30 (2006.01); B01J 23/36 (2006.01)

CPC C07C 6/04 (2013.01) [B01J 21/04 (2013.01); B01J 23/28 (2013.01); B01J 23/30 (2013.01); B01J 23/36 (2013.01); C07C 2521/08 (2013.01); C07C 2523/30 (2013.01)]

15 Claims

1. A method of converting an olefin into higher and lower homologues comprising contacting a reactant mixture of olefins with a catalyst comprising a metal oxide and introducing and co-feeding a promoter with electron-releasing groups and including an electron-rich olefin, keeping a reactant conversion below 10% at all reaction conditions, the promoter forming a fraction that positively relates to an increase metathesis activity during catalysis, wherein the promoter is a 2-butene, isobutene, 2-methyl-2-butene, 2,3-dimethyl-2-butene, a monoalkylethylene, a dialkylethylene, a trialkylethylene or a tetraalkylethylene, wherein each alkyl group is a C1-C6 alkyl group and wherein the metathesis activity is a C4-C40 alkene metathesis.