Activated magnesium oxide catalysts
AssigneeConoco Inc.
InventorDaniel L. Ralston
Life of this patent
Estimating the term…
Abstract
Catalysts comprising magnesium oxide, sulfate ions and amorphous metal ions including titanium are improved in activity by undergoing a wet grinding step. The level of water in the wet grinding step is critical to achieve full activity. The water may subsequently be removed by calcining and is necessarily present only during the wet grinding step.
Claims12
A method for producing highly active magnesium oxide catalysts containing from about 0.5% to about 15% by weight of amorphous titanium, uranium, zirconium, or chromium ions or mixtures thereof together with from about 0.5% to about 15% by weight of sulfate ions, all based on the total weight of the catalyst comprising
- (a) contacting magnesium oxide with a material capable of donating amorphous titanium, uranium, zirconium, or chromium ions, and with a material capable of donating sulfate ions,
- (b) adding water to (a) to form a mixture, then
- (c) mechanically grinding said mixture for a time and at an intensity sufficient for the mixture of (a) to uptake water to a level of at least 15% by weight, then
- (d) forming and calcining the product of (c) to obtain the catalyst.
Dependencies are inferred from the claim text.