C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 2/66 (2006.01)
Patent
CA 2293443
The present invention provides a method comprising (a) contacting a first reaction mixture comprising an aromatic and a dilute stream comprising ethylene and propylene with a large pore microporous solid acid catalyst, preferably a large pore zeolite catalyst, which is effective to promote alkylation of the aromatic under first conditions effective to maintain a liquid phase comprising the aromatic and effective to cause the propylene to alkylate said aromatic but substantially ineffective to cause the ethylene to alkylate said aromatic, forming propylated aromatic and a second dilute stream comprising ethylene but substantially depleted of propylene, and (b) recovering the propylated aromatic.
La présente invention concerne un procédé consistant a) à mettre en contact un premier mélange de réaction renfermant un aromatique et un courant dilué contenant de l'éthylène et du propylène avec un catalyseur acide solide microporeux à pores de grande dimension, de préférence un catalyseur à zéolithe à pores de grande dimension, qui est efficace pour activer l'alkylation de l'aromatique dans des premières conditions propices pour entretenir une phase liquide contenant l'aromatique et pour provoquer l'alkylation de ce dernier par le propylène, mais sensiblement non propices pour provoquer l'alkylation de cet aromatique par l'éthylène, formant ainsi un aromatique propylé et un deuxième courant dilué comprenant de l'éthylène, mais sensiblement dépourvu de propylène, et b) à récupérer l'aromatique propylé.
Hendriksen Dan E.
Lattner James R.
Wristers Jos P.
Borden Ladner Gervais Llp
Exxon Chemical Patents Inc.
Exxonmobil Chemical Patents Inc.
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