Process for producing chlorinated hydrocarbons
AssigneeEagle US 2 LLC
InventorsScott A. Sherwood, Stephen Robert Lester
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Abstract
The preparation of chlorinated hydrocarbons, such as pentachloropropanes, such as 1,1,1,2,3-pentachloropropane, from tetrachloropropanes, such as 1,1,1,3-tetrachloropropane, in the presence of a polyvalent antimony compound that includes a pentavalent antimony compound, such as antimony pentachloride, is described. Also described are methods for preparing optionally chlorinated alkenes, such as, tetrachloropropenes, from chlorinated alkanes, such as pentachloropropanes, in the presence of ferric chloride and a polyvalent antimony compound that includes a pentavalent antimony compound.
Claims14
A method of forming an alkene product 1,1,2,3-tetrachloropropene comprising,
- (1) reacting carbon tetrachloride with ethylene in the presence of an iron chloride, iron metal, and a trialkylphosphate to form 1,1,1,3-tetrachloropropane;
- (2) reacting the 1,1,1,3-tetrachloropropane with a source of chlorine in the presence of a polyvalent antimony compound comprising a pentavalent antimony compound, thereby forming a product comprising 1,1,1,2,3-pentachloropropane;
- (3) performing a dehydrochlorination reaction comprising,
- heating a chlorinated alkane substrate the 1,1,1,2,3-pentachloropropane in the presence of ferric chloride and a polyvalent antimony compound comprising a pentavalent antimony compound and a trivalent antimony compound, thereby forming a product comprising said alkene product 1,1,2,3-tetrachloropropene, wherein
- said alkene product optionally has at least one chlorine group covalently bonded thereto, and
- said chlorinated alkane substrate and said alkene product each have a carbon backbone structure that is in each case the same
- ferric chloride and the polyvalent antimony compound in each of steps (2) and (3) are each independently present in a catalytic amount.
Dependencies are inferred from the claim text.