The catalysts thus sulphurized prove to be more active than those sulphurized by only the second step.

A method and apparatus for simultaneously measuring sulfur and non-sulfur compounds in a sample.

Sulphide and non-sulphide minerals as well as native metals are recovered.

Sulfide and nonsulfide minerals as well as native metals are recovered by froth flotation.

Sulfur compounds are removed from a hydrocarbon stream.

HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS

HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS

Halogen or sulphur compounds of non-metals

Halogen or sulphur compounds of non-metals

Halogen or sulphur compounds of non-metals

HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS

Catalysts sulphided by the process according to the invention show a higher activity than the same catalysts which have been sulphided in a one-step process.

Catalysts sulphided by the process according to the invention show a higher activity than the same catalysts which have not been sulphided.

The impregnated, regenerated catalysts are dried, calcined, and sulfided.

HALOGEN OR SULPHUR COMPOUNDS OF NON-METALS