Processes for producing trifluoroiodomethane and trifluoroacetyl iodide
A technology of trifluoroiodomethane and trifluoroacetyl, which is applied in the gas phase field of producing trifluoroiodomethane and trifluoroacetyl iodide, and can solve problems such as process efficiency reduction
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Embodiment 1
[0104] Example 1: Manufacture of trifluoroacetyl iodide at higher reaction temperatures according to Equation 1
[0105]In this example, the production of trifluoroacetyl iodide from hydrogen iodide and trifluoroacetyl chloride at higher temperatures according to Equation 1 as described above is demonstrated. In a series of twenty-three experiments, equimolar amounts of trifluoroacetyl chloride and anhydrous hydrogen iodide were passed through a preheater and heated to a temperature of about 100°C. The heated reactants were passed through a stainless steel tube having a diameter of 3 / 8 inch (9.5 mm) and a length of 6 inches (152 mm). Depending on the experiment, the tubes were heated to a temperature ranging from 200°C to 350°C, and were purged with nitrogen for at least one hour before each experiment to remove any water. In twenty-one experiments, the tubes contained one of several catalysts. In the remaining two experiments, the tubes contained no catalyst. Contact tim...
Embodiment 2
[0114] Example 2: Production of trifluoroacetyl iodide at higher reaction temperatures according to Equation 1
[0115] In this example, the production of trifluoroacetyl iodide from hydrogen iodide and trifluoroacetyl chloride at higher reaction temperatures according to Equation 1 as described above is demonstrated. A flow rate of 8.34 grams / hour of trifluoroacetyl chloride and a flow rate of 14.08 grams / hour of hydrogen iodide were passed through a stainless steel tube 3 / 8 inch (9.5 mm) in diameter and 6 inches (152 mm) in length. The tubes were heated to about 300°C and purged with nitrogen for at least one hour prior to the experiment to remove any water. tube contains Stainless steel catalyst, contact time is about 10 seconds. The process ran continuously for 6.25 hours. The output of the reactor was collected in two dry ice traps, one at about 0°C to -5°C and the other at about -78°C.
[0116] A total of 99.8 g of material was collected and a portion was analyzed...
Embodiment 3
[0117] Example 3: Production of trifluoroacetyl iodide at higher reaction temperatures according to Equation 1
[0118] In this example, the production of trifluoroacetyl iodide from hydrogen iodide and trifluoroacetyl chloride at higher reaction temperatures according to Equation 1 as described above is demonstrated. A flow rate of 5.75 grams / hour of trifluoroacetyl chloride and a flow rate of 13.9 grams / hour of hydrogen iodide were passed through a stainless steel tube having a diameter of 1 / 2 inch (12.7 mm) and a length of 6 inches (152 mm). The tubes were heated to about 250°C and purged with nitrogen for at least one hour prior to the experiment to remove any water. The tube contained 0.5% palladium on alumina support (3.2 mm pellets) catalyst with a contact time of about 15 seconds. The process ran continuously for 5.25 hours. The output of the reactor was collected in two dry ice traps, one at about 0°C to -5°C and the other at about -78°C.
[0119] A total of 89 g...
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Abstract
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