Fluorinated catalyst supports and catalyst systems
AssigneeUnivation Technologies, LLC
InventorsJohn H. Moorhouse, Kevin J. Cann, Phuong A. Cao, Mark G. Goode, C. Jeff Harlan, Wesley R. Mariott
Life of this patent
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Abstract
Catalyst systems and methods for making and using the same. A method for making a catalyst support includes forming a mixture of a support material and a fluoride donor. The mixture is added to a fluidized bed reactor. The mixture is fluidized to form a fluidized bed while maintaining a ratio of a pressure drop across a distributor plate to a pressure drop across the fluidized bed of greater than about 7%. The mixture is calcined to decompose the fluoride donor, forming a fluorinated support.
Claims20
A method for making a fluorinated catalyst support, comprising:
- forming a mixture of a support material that can be fluorinated and a fluoride donor;
- adding the mixture to a fluidized bed reactor;
- fluidizing the mixture in the fluidized bed reactor with a fluidizing gas while maintaining a ratio of a pressure drop across a distributor plate to a pressure drop across the fluidized bed of greater than about 7%;
- and
- calcining the mixture to decompose the fluoride donor to form the fluorinated catalyst support.
A method of forming a catalyst system, comprising:
- combining a catalyst compound with a fluorinated catalyst support made by:
- forming a mixture of a support material that can be fluorinated and a fluoride donor;
- adding the mixture to a fluidized bed reactor;
- fluidizing the mixture in the fluidized bed reactor with a fluidizing gas while maintaining a ratio of a pressure drop across a distributor plate to a pressure drop across the fluidized bed of greater than about 7%, wherein the fluidized bed has a height to diameter ratio of at least about 2.3;
- and
- calcining the mixture to decompose the fluoride donor to form the fluorinated catalyst support, and
- an aluminoxane, wherein the aluminoxane is present in an amount of about 10 mmol or less per gram of the fluorinated catalyst support.
A catalyst system, comprising:
- a catalyst compound;
- a support comprising a fluorinated support, wherein the fluorinated support is generated by heating a catalyst support that can be fluorinated and a fluoride donor compound at a temperature sufficient to decompose the fluoride donor compound in a fluidized bed reactor with a fluidizing gas, to provide a fluidized bed while maintaining a ratio of a pressure drop across a distributor plate to a pressure drop across a fluidized bed of greater than about 7%;
- and
- an aluminoxane, wherein the aluminoxane is present in an amount of about 10 mmol or less per gram of the support.
Dependencies are inferred from the claim text.