Claims
- 1. A catalyst for epoxidizing olefins comprising a manganese complex having at least one manganese atom which is coordinated with a nitrogen-containing ligand such that the manganese atom to coordinated nitrogen atoms are present in a ratio of 1:3 and a solvent insoluble substrate unto which is adsorbed the manganese complex.
- 2. A catalyst according to claim 1 wherein the substrate is selected from the group consisting of synthetic zeolites, amorphous aluminosilicates, silica, alumina, charcoal, microporous polymeric resins, clays and combinations thereof.
- 3. A catalyst according to claim 1 wherein the manganese complex has a formula selected from the group consisting of:
- [LMnX.sub.3 ]Y (1)
- wherein Mn is manganese;
- X is a coordinating species selected from the group consisting of: RO.sup.-, CI.sup.-, Br.sup.-, I.sup.-, F.sup.-, NCS.sup.-, N.sub.3.sup.-, I.sub.3.sup.-, NH.sub.3, NR.sub.3, RCOO.sup.-, RSO.sub.3.sup.-, RSO.sub.4.sup.-, OH.sub.-, O.sub.2.sup.2-, HOO.sup.-, H.sub.2 O, SH.sup.-, CN.sup.-, OCN.sup.-, and S.sub.4.sup.2- and combinations thereof;
- R is a C.sub.1 -C.sub.20 radical selected from the group consisting of alkyl, cycloalkyl, aryl, benzyl and radical combinations thereof;
- at least two R radicals may also be connected to one another so as to form a bridging unit between two oxygens that coordinate with the manganese;
- L is a ligand selected from a (C.sub.3 -C.sub.60 radical having at least 3 nitrogen atoms coordinating with the manganese; and
- Y is an oxidatively-stable counterion; and
- the formula: ##STR6## wherein Mn is manganese in a +III or +IV oxidation state and X, L and Y are as defined above.
- 4. A catalyst according to claim 3 wherein the manganese complex has the formula: [Mn.sup.IV.sub.2 (.mu.-O).sub.3 (MeTACN).sub.2 ](PF.sub.6).sub.2.
- 5. A catalyst according to claim 3 wherein the manganese complex has the formula: Mn(IV)(MeTACN)(OCH.sub.3).sub.3 (PF.sub.6).
- 6. A catalyst according to claim 3 wherein the ligand L is 1,4,7-trimethyl-1,4,7-triazacyclononane.
- 7. A catalyst according to claim 3 wherein the ligand L is 2-methyl-1,4,7-trimethyl-1,4,7-triazacyclononane.
- 8. A catalyst according to claim 3, wherein the ligand L is N,N',N"-(2-hydroxyethyl)-1,4,7-triazacyclononane.
- 9. A catalyst according to claim 3 where Y is an anion selected from the group consisting of CI.sup.-, Br.sup.-, I.sup.-, NO.sub.3.sup.-, CIO.sub.4.sup.-, NCS.sup.-, PF.sub.6.sup.-, SO.sub.4.sup.2-, OAc.sup.-, BPh.sub.4.sup.-, CF.sub.3 SO.sub.3.sup.-, RSO.sub.3.sup.-, and RSO.sub.4.sup.-.
- 10. A catalyst according to claim 1 wherein the substrate is silica.
- 11. A catalyst according to claim 1 wherein the substrate is zeolite.
- 12. A catalyst according to claim 1 wherein the substrate is clay.
Parent Case Info
This is a Divisional application of Ser. No. 08/040,316 filed Mar. 30, 1993, now U.S. Pat. No. 5,329,024.
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Divisions (1)
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Number |
Date |
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Parent |
40316 |
Mar 1993 |
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