Process for making 2,3-dihalopropanols
First Claim
1. A process for making 2,3-dihalopropanol comprising the step of reacting 2,3-dihalopropanal with a hydrogenating agent in the presence of a heterogeneous mixed transition metal catalyst under the conditions such that 2,3-dihalopropanol is formed, wherein the heterogeneous mixed transition metal catalyst comprises an iridium metal as a first transition metal and at least a second transition metal selected from the group consisting of ruthenium, iron, molybdenum, tungsten, rhenium, osmium, or vanadium;
- and wherein the atomic ratio of iridium metal to said second transition metal is from about 0.02 to about 15 such that iridium metal plus the second transition metal used as a mixed metal catalyst provides a sustained high catalytic activity and a high selectivity to the 2,3-dihalopropanol superior to the pure iridium metal used as a metal catalyst.
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Abstract
A process for making 2,3-dihalopropanol including reacting 2,3-dihalopropanal with a hydrogenating agent in the presence of an iridium and a second transition metal mixed metal catalyst where the second transition metal is selected from the group comprising ruthenium, iron, molybdenum, tungsten, rhenium, osmium, manganese or vanadium, under conditions such that 2,3-dihalopropanol is formed. The 2,3-dihalopropanol is particularly useful in a process for making epihalohydrin.
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Citations
27 Claims
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1. A process for making 2,3-dihalopropanol comprising the step of reacting 2,3-dihalopropanal with a hydrogenating agent in the presence of a heterogeneous mixed transition metal catalyst under the conditions such that 2,3-dihalopropanol is formed, wherein the heterogeneous mixed transition metal catalyst comprises an iridium metal as a first transition metal and at least a second transition metal selected from the group consisting of ruthenium, iron, molybdenum, tungsten, rhenium, osmium, or vanadium;
- and wherein the atomic ratio of iridium metal to said second transition metal is from about 0.02 to about 15 such that iridium metal plus the second transition metal used as a mixed metal catalyst provides a sustained high catalytic activity and a high selectivity to the 2,3-dihalopropanol superior to the pure iridium metal used as a metal catalyst.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
Specification