Selective opening of five and six membered rings
AssigneeExxon Research & Engineering Co.
InventorsSylvain Hantzer, Michele S. Touvelle, Jingguang G. Chen
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Abstract
A process for opening C.sub.5 and C.sub.6 rings without substantial cracking. A feedstream containing compounds comprised of at least one C.sub.5 -ring, at least one C.sub.6 -ring, or both, is contacted, in the presence of hydrogen, with a transition metal catalyst selected from the group consisting of carbides, nitrides, oxycarbides, oxynitrides, and oxycarbonitrides. The transition metal is selected from the group consisting of metals from Groups IVa, Va, and VIa of the Periodic Table of the Elements.
Claims10
A process for selectively opening five and six membered rings without substantial cracking, which process comprises:
- contacting a feedstream containing five membered ring compounds, six membered ring compounds, or mixtures thereof with one or more transition metal catalysts at a temperature from about 300.degree. C. to about 450.degree. C. and a hydrogen pressure from about 200 psig to about 2000 psig, which transition metal catalyst is selected from the group consisting of carbides, nitrides, oxycarbides, oxynitrides, and oxycarbonitrides, of transition metals from Groups IVB, VB, and VIB of the Periodic Table of the Elements, and which transition metal catalyst contains a Group VIII noble metal, and which catalyst will result in at least a 50% selectivity when reacted with butylcyclohexane at a temperature from about 325.degree. C. to 350.degree. C., a pressure from about 500 to 700 psig, a liquid hourly space velocity of 1 to 2.5. and a hydrogen flow rate of 3000 standard cubic feet per barrel, which selectivity is defined as % C.sub.10 paraffin yield/% C.sub.10 ring disappearance.
Dependencies are inferred from the claim text.