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US 11,123,721 B2Granted
Trialkylphosphonium ionic liquids, methods of making, and alkylation processes using trialkylphosphonium ionic liquids
AssigneeUop LLC
InventorsAvram M. Buchbinder, Susie C. Martins, Douglas A. Nafis, Donato Nucciarone
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Abstract
A trialkylphosphonium haloaluminate compound having a formula: where R1, R2, and R3 are the same or different and each is independently selected from C1 to C8 hydrocarbyl; and X is selected from F, Cl, Br, I, or combinations thereof is described. An ionic liquid catalyst composition incorporating the trialkylphosphonium haloaluminate compound, methods of making the trialkylphosphonium haloaluminate compound, and alkylation processes incorporating the trialkylphosphonium haloaluminate compound are also described.
Claims12
An alkylation process comprising:
- contacting an isoparaffin feed having from 4 to 10 carbon atoms and an olefin feed having from 2 to 10 carbon atoms in the presence of a trialkylphosphonium ionic liquid catalyst composition in an alkylation zone under alkylation conditions to generate an alkylate,
- wherein the trialkylphosphonium ionic liquid catalyst composition comprises one or more trialkylphosphonium haloaluminate compounds having a formula:
- where R1, R2, and R3 are the same or different and each is independently selected from C1 to C8 hydrocarbyl;
- and
- X is selected from F, Cl, Br, I, or combinations thereof;
- wherein the trialkylphosphonium haloaluminate compound comprises tri-n-butylphosphonium Al2Cl7, tri-isobutylphosphonium Al2Cl7, or di-n-butyl-sec-butylphosphonium Al2Cl7;
- and
- wherein an initial kinematic viscosity of the trialkylphosphonium ionic liquid catalyst composition is less than 50 cSt at 25° C.
5 more elements
Dependencies are inferred from the claim text.