Process for treating spent catalyst including antimony halides from chlorofluorocarbon production
A process for treating spent catalyst from chlorofluorocarbon production is described wherein the catalyst includes antimony halides and undergoes hydrolysis in an aqueous medium to produce insoluble antimony compounds and fluoride ions. The process comprises hydrolyzing the catalyst in an aqueous solution of ferric chloride having a sufficient concentration of ferric ions to complex substantially all of the fluoride ions produced upon hydrolysis of the catalyst, neutralizing the reaction mass present following hydrolysis of the catalyst and complexing of the fluoride ions by contacting the reaction mass with an aqueous suspension of a compound selected from the class consisting of calcium hydroxide and magnesium hydroxide, and separating the insoluble antimony compounds from the neutralized reaction mass.
- Assignee:
- International Technology Corp., Knoxville, TN
- Patent Number(s):
- US 4751063
- OSTI ID:
- 7006289
- Resource Relation:
- Patent File Date: Filed date 19 Feb 1987
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ANTIMONY
HYDROLYSIS
CATALYSTS
AQUEOUS SOLUTIONS
CALCIUM HYDROXIDES
HALIDES
IRON CHLORIDES
MAGNESIUM HYDROXIDES
ORGANIC CHLORINE COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
PRODUCTION
SEPARATION PROCESSES
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
DECOMPOSITION
DISPERSIONS
ELEMENTS
HALOGEN COMPOUNDS
HYDROGEN COMPOUNDS
HYDROXIDES
IRON COMPOUNDS
LYSIS
MAGNESIUM COMPOUNDS
METALS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
OXYGEN COMPOUNDS
SOLUTIONS
SOLVOLYSIS
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties