Decarboxylation processes using mixed metal oxide catalysts
AssigneeUnion Carbide Chemicals & Plastics Technology Corporation
InventorsStephen W. King, Kurt D. Olson, Bernard C. Ream
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Abstract
A decarboxylation process which comprises contacting a carboxylated compound with a metal oxide catalyst under conditions effective to decarboxylate the carboxylated compound.
Claims49
A decarboxylation process which comprises contacting a carboxylated compound with a mixed metal oxide catalyst, where the mixed metal oxide catalyst comprises:
- (a) a material having the formula
- M.sub.x.sup.2+ O.sub.y.sup.3+ (OH).sub.2x+3y-nz A.sub.z.sup.n-, a H.sub.2 O (I)
- wherein M is at least one divalent metal cation;
- Q is at least one trivalent metal cation;
- and A is at least one anion providing a valence (N.sup.-), wherein n is 1 to 4 and wherein a is a positive number, M, Q and A are provided in a proportion such that x/y is a number equal to or greater than 1, z has a value greater than zero and 2x+3y-nz is a positive number, or
- (b) a material prepared by calcining the material of formula (I) having the formula
- M.sub.x.sup.2+ Q.sub.y.sup.3+ (O).sub.(2x+36-nz)/2 D.sub.z.sup.n-(II)
- wherein M, Q, x, y, z and n have the same meanings defined above in connection with formula (I), and D is at least one nonvolatile anion;
- under conditions effective to decarboxylate the carboxylated compound.
A decarboxylation process which comprises (i) contacting an active hydrogen-containing compound with a CO.sub.2 synthon under conditions effective to produce a carboxylated compound, and (ii) contacting the carboxylated compound with a mixed metal oxide catalyst;
- where the mixed metal oxide catalyst comprises:
- (a) a material having the formula
- M.sub.x.sup.2+ Q.sub.y.sup.3+ (OH).sub.2x+3y-nz A.sub.z.sup.n-.multidot.a H.sub.2 O (I)
- wherein M is at least one divalent metal cation;
- Q is at least one trivalent metal cation;
- and A is at least one anion providing a valence (n.sup.-), wherein n is 1 to 4 and wherein a is a positive number, M, Q and A are provided in a proportion such that x/y is a number equal to or greater than 1, z has a value greater than zero and 2x+3y-nz is a positive number, or
- (b) a material prepared by calcining the material of formula (I) having the formula
- M.sub.x.sup.2+ Q.sub.y.sup.3+ (O).sub.(2x+3y-nz)/2 D.sub.z.sup.n-(II)
- wherein M, Q, x, y, z and n have the same meanings defined above in connection with formula (I), and D is at least one nonvolatile anion;
- under conditions effective to decarboxylate the carboxylated compound.
A decarboxylation process which comprises contacting an active hydrogen-containing compound with a CO.sub.2 synthon in the presence of a mixed metal oxide catalyst;
- where the mixed metal oxide catalyst comprises:
- (a) a material having the formula
- M.sub.x.sup.2+ Q.sub.y.sup.3+ (OH).sub.(2x+3y-nz A.sub.z.sup.n- .multidot.a H.sub.2 O (I)
- wherein M is at least one divalent metal cation;
- Q is at least one trivalent metal cation;
- and A is at least one anion providing a valence (N.sup.-), wherein n is 1 to 4 and wherein a is a positive number, M, Q and A are provided in a proportion such that x/y is a number equal to or greater than 1, z has a value greater than zero and 2x+3y-nz is a positive number, or
- (b) a material prepared by calcining the material of formula (I) having the formula
- M.sub.x.sup.2+ Q.sub.y.sup.3+ (O).sub.(2x+3y-nz)/2 D.sub.z.sup.n-(II)
- wherein M, Q, x, y, z and n have the same meanings defined above in connection with formula (I), and D is at least one nonvolatile anion;
- under conditions effective for decarboxylation.
Dependencies are inferred from the claim text.