Methods for the Production of Alpha,Beta-Unsaturated Carboxylic Acids and Salts Thereof
AssigneeChevron Phillips Chemical Company LP
InventorsMark L. Hlavinka, Max P. McDaniel
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Abstract
Processes for producing an α,β-unsaturated carboxylic acid, such as acrylic acid, or a salt thereof, using solid promoters are disclosed. The solid promoters can be certain solid oxides, mixed oxides, and clays, illustrative examples of which can include alumina, zirconia, magnesia, magnesium aluminate, sepiolite, and similar materials.
Claims20
A process for performing a metallalactone elimination reaction, the process comprising:
- (1) contacting
- (a) a metallalactone;
- (b) a diluent;
- and
- (c) a solid promoter;
- and
- (2) forming an α,β-unsaturated carboxylic acid, or a salt thereof.
A process for producing an α,β-unsaturated carboxylic acid, or a salt thereof, the process comprising:
- (1) contacting
- (a) a metallalactone;
- (b) a diluent;
- and
- (c) a solid promoter;
- (2) forming an adduct of an α,β-unsaturated carboxylic acid adsorbed onto the solid promoter;
- and
- (3) treating the adduct adsorbed onto the solid promoter to produce the α,β-unsaturated carboxylic acid, or the salt thereof.
A process for producing an α,β-unsaturated carboxylic acid, or a salt thereof, the process comprising:
- (I) contacting
- (i) a transition metal-ligand complex;
- (ii) an olefin;
- (iii) carbon dioxide (CO2);
- (iv) a diluent;
- and
- (v) a solid promoter;
- and
- (II) forming the α,β-unsaturated carboxylic acid, or the salt thereof.
Dependencies are inferred from the claim text.