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US 2016/0244385 A1Published application
Selective Hydrogenation of Styrene to Ethylbenzene
AssigneeExxonMobil Chemical Patents Inc.
InventorsTan-Jen Chen, John D. Ou, Jeevan S. Abichandani, Glenn A. Heeter
Life of this patent
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Abstract
A feedstream comprising paraxylene and styrene is contacted, in the presence of hydrogen, with a catalyst comprising at least one metal, selected from one or more metals selected from Groups 8-10.
Claims10
-11. (canceled)
A process comprising:
- (i) contacting an aromatic hydrocarbon feedstream comprising benzene and/or toluene with methanol and/or dimethyl ether in the presence of a phosphorus-modified ZSM-5 alkylation catalyst, which has been steamed at a temperature of at least 950° C., to obtain a first product stream comprising greater than about 24 wt % para-xylene and styrene;
- and
- (ii) contacting said first product stream comprising greater than about 24 wt % para-xylene and styrene with a hydrogenation catalyst comprising at least one metal selected from Groups 8-10 of the Periodic Table, in the presence of hydrogen, to obtain a second product stream comprising a reduced amount of styrene when compared with said first product stream, wherein less than 0.2 wt % of paraxylene is isomerized by contact with the hydrogenation catalyst.
Dependencies are inferred from the claim text.