Investigation into the physical and chemical properties of WS₂-catalysts

Summary

• 1. The effect of equiatomic amounts of sulfur, selenium, tellurium or phosphorus on the activity of a nonmixed WS₂-catalyst in the hydrogenation of phenol under pressure has been compared.

• 2. When compared with sulfur, promoting by selenium more strongly changes the selectivity of the catalyst in the direction of an enhanced hydrogenation ability.

• 3. Tellurium and phosphorus lower the activity; meanwhile tellurium somewhat decreases and phosphorus increases the hydrogenation ability of a WS₂-catalyst.