METHOD FOR REGENERATING A RUTHENIUM- OR RUTHENIUM COMPOUND-CONTAINING CATALYST WHICH IS CONTAMINATED WITH SULFUR IN THE FORM OF SULFUR COMPOUNDS

摘要

Processes comprising: providing a catalyst comprising a catalytic component selected from the group consisting of ruthenium, ruthenium compounds, and combinations thereof, wherein the catalyst is sulfur-poisoned with one or more sulfur compounds; and treating the catalyst with a gas stream comprising a hydrogen halide under nonoxidative conditions such that the catalyst is regenerated.