Method for manufacturing cobalt catalysts
AssigneeThe Procter & Gamble Company
InventorsChristopher M. Perkins, Mark R. Sivik
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Abstract
A method for manufacturing cobalt complexes having the formula: [Co(NH.sub.3).sub.5 M]T.sub.y wherein M ligands are selected from substituted and unsubstituted C.sub.1 -C.sub.30 carboxylic acids having the formulas: RC(O)O--; said method comprising reacting cobalt (II) complexes having the formula [Co(H.sub.2 O).sub.6 ] T.sub.y (e.g., T is chloride) with concentrated ammonium hydroxide/ammonium chloride, followed by an oxidizing agent (e.g., peroxide), followed by carboxylic acid anhydride of the formula RC(O)O(O)CR.
Claims16
A method for manufacturing cobalt complexes having the formula:
- [Co(NH.sub.3).sub.5 M]T.sub.y
- wherein the M ligand is selected from substituted and unsubstituted C.sub.1 -C.sub.30 carboxylic acids having the formula:
- RC(O)O--;
- said method comprising the steps of:
- (a) reacting a cobalt (II) salt having the formula:
- [Co(H.sub.2 O).sub.6 ]T.sub.y
- wherein T is one or more counteranions present in a number y to obtain a charge-balanced salt;
- and y is 1 or 2;
- with concentrated ammonium hydroxide and ammonium chloride;
- followed by
- (b) reacting the product of step (a) with an oxidizing agent selected from the group consisting of oxygen, hydrogen peroxide, and mixtures thereof;
- followed by
- (c) reacting the product of step (b) with a carboxylic acid anhydride of the formula:
- RC(O)O(O)CR
- wherein each R is independently selected from substituted or unsubstituted C.sub.1 -C.sub.30 moieties;
- (d) optionally, exchanging one T counterion with another T counterion;
- and
- (e) collecting the cobalt complex.
A method for manufacturing cobalt complexes having the formula:
- [Co(NH.sub.3).sub.5 M]T.sub.y
- wherein the M ligand is selected from substituted and unsubstituted C.sub.1 -C.sub.30 carboxylic acids having the formula:
- RC(O)O--;
- wherein R is selected from C.sub.1 -C.sub.18 unsubstituted and substituted alkyl moieties;
- said method comprising the steps of:
- (a) reacting a cobalt (II) salt having the formula:
- [Co(H.sub.2 O).sub.6 ]T.sub.y
- wherein T is one or more counteranions present in a number y to obtain a charge-balanced salt;
- and y is 1 or 2;
- with concentrated ammonium hydroxide and ammonium chloride;
- followed by
- (b) reacting the product of step (a) with hydrogen peroxide;
- followed by
- (c) reacting the product of step (b) with a carboxylic acid anhydride of the formula:
- RC(O)O(O)CR
- wherein each R is independently selected from C.sub.1 -C.sub.18 unsubstituted and substituted alkyl moieties;
- and
- (d) optionally, exchanging one T counterion with another T counterion;
- and
- (e) collecting the cobalt complex.
Dependencies are inferred from the claim text.