Chromium compounds and uses thereof
AssigneePhillips Petroleum Company
InventorsWillim K. Reagen, Brian K. Conroy
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Abstract
Novel chromium-containing compounds, such as, for example, chromium pyrrolides, are prepared by forming a mixture of a chromium salt, a metal amide, and an electron pair donor solvent, such as, for example, an ether. These novel chromium-containing, or chromium pyrrolide, compounds can be used either unsupported or supported on an inorganic oxide support to trimerize and/or polymerize olefins.
Claims30
A trimerization process comprising contacting at least one mono-1-olefin with a catalyst prepared by a process comprising forming a mixture of and refluxing:
- (a) a chromium salt;
- (b) a metal amide which is a pyrrolide;
- and
- (c) an electron pair donor solvent which can affect a reaction between the chromium salt and metal amide.
A trimerization process comprising contacting at least one mono-1-olefin with an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids and a catalyst prepared by a process comprising forming a mixture of and refluxing:
- (a) a chromium salt;
- (b) a metal amide, which is a pyrrolide;
- and
- (c) an electron pair donor solvent which can affect a reaction between the chromium salt and metal amide.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a composition comprising Cr.sub.5 (C.sub.4 H.sub.4 N).sub.10 (C.sub.4 H.sub.8 O).sub.4 supported on an inorganic oxide and an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a composition comprising Cr(C.sub.4 H.sub.4 N).sub.4 Na.sub.2.2(OC.sub.4 H.sub.8) supported on an inorganic oxide and an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a composition comprising Cr(C.sub.4 H.sub.4 N).sub.5 (OC.sub.4 H.sub.8)Na.sub.2.4(OC.sub.4 H.sub.8) supported on an organic oxide and an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a catalyst system prepared according to a process comprising:
- (a) forming a mixture of a chromium salt, a metal amide which is a pyrrolide, and electron pair donor solvent which can affect a reaction between the chromium salt and metal amide;
- (b) recovering a chromium-containing compound from the mixture of (a);
- (c) reacting the chromium-containing compound of (b) with an aromatic compound and an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids to form a reaction product;
- (d) adding an inorganic oxide to the reaction product of (c);
- and
- (e) recovering a solid product.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a catalyst system prepared according to a process comprising:
- (a) forming a mixture of and refluxing a chromium salt, a metal amide which is a pyrrolide, and an electron pair donating solvent which can affect a reaction between the chromium salt and metal amide;
- (b) adding an inorganic oxide to the mixture of (a) to form a slurry;
- (c) recovering a supported chromium-containing solid product;
- (d) adding an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids to the solid product of (c);
- and
- (e) recovering a solid product.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a catalyst composition comprising Cr(NC.sub.4 H.sub.4).sub.3 Cl(O.sub.2 C.sub.2 H.sub.4 (CH.sub.3).sub.2).sub.3 Na supported on an inorganic oxide and an alkyl aluminum activating compound selected from the group consisting of metal alkyls and Lewis acids.
A process to trimerize olefins comprising contacting at least one mono-1-olefin with a catalyst system prepared according to a process comprising:
- (a) forming a mixture of and refluxing a chromium salt, a metal amide which is a pyrrolide, and electron pair donor solvent which can affect a reaction between the chromium salt and metal amide;
- (b) recovering a chromium-containing compound from the mixture of (a);
- and
- (c) reacting the chromium-containing compound of (b) with an alkyl aluminum compound activating compound selected from the group consisting of metal alkyls and Lewis acids to form a reaction product.
Dependencies are inferred from the claim text.