Ways to enhance the activity of aluminorhenium catalyst for metathesis of unsaturated functional compounds

It was established that preliminary treatment of gamma-Al2O3 by acid of trialkylborate provided 2-15 times increase of activity of aluminorhenium catalyst with preserved high selectivity. Re)2O7 content in catalyst can be decreased at that from 15 to 2.5-5.0 mas%. Introduction of oxides of variable valency metals (Mo or V)( into the catalyst also enables to increase catalyst activity. 20 refs.; 6 tabs