Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – With hydrocarbon recycle from later to earlier synthesis
Patent
1986-10-23
1987-08-11
Pal, Asok
Chemistry of hydrocarbon compounds
Plural serial diverse syntheses
With hydrocarbon recycle from later to earlier synthesis
585312, 585314, 585408, 585415, 585469, 585640, C07C 120
Patent
active
046863125
ABSTRACT:
Disclosed is a multistage process for converting lower aliphatic oxygeanated hydrocarbon feedstock to hydrocarbon product rich in benzene, toluene and/or xylene which comprises:
contacting said oxygenated hydrocarbons in a primary stage with a medium pore shape selective acidic zeolite to an intermediate hydrocarbon product comprising predominantly aliphatic hydrocarbons;
contacting at least a portion of the aliphatic hydrocarbons from the primary stage with a secondary stage catalyst comprising gallium-promoted medium pore shape selective zeolite characterized by a constraint index within the approximate range of 1 to 12 and a silica to alumina ratio of about 20 to 100:1; thereby producing benzene, toluene and/or xylene.
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Chester Arthur W.
Chu Yung-Feng
Gilman Michael G.
McKillop Alexander J.
Mobil Oil Corporation
Pal Asok
Wise L. G.
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