| 摘要 |
A process for the dehydrohalogenation of halogenated alkanes involving contacting a halogenated alkane having three or more carbon atoms with a rare earth halide or rare earth oxyhalide catalyst under process conditions sufficient to prepare an alkene or halogenated alkene. The process converts low valued halogenated alkanes, which are by products of industrial chlorination processes, into higher valued alkenes and halogenated alkenes. 1,2 Dichloropropane, for example, can be dehydrochlorinated predominantly to allyl chrloride and 1 chloropropene with little production of low value 2 chloropropene. 1,2,3 Trichloropropane can be dehydrochlorinated predominantly to 1,3 dichloropropene which is useful in soil fumigants. |
