Silica-modified zeolite catalysts

Silica-promoted hydrofining catalyst and process

Siliceous fibers and method of preparing them

Silver catalyst for ethylene epoxidation

Silver catalyst for production of ethylene oxide

Silver catalysts

Silver catalysts

Silver-based catalytic composition for the oxidation of ethylene

Silver-cadmium alloy catalyst

Silver-containing supported catalysts and catalyst intermediate

Silylhydrocarbyl phosphine transition metal complexes

Silylhydrocarbyl phosphine transition metal complexes

Single phase vanadium(IV)bis(metaphosphate) oxidation catalyst w

Sintered cataltyic or absorbent metallic product and method for

SO.sub.2 Activation of supported chromium oxide catalysts

Solid catalyst and process for the preparation thereof

Solid catalyst component for olefin polymerization

Solid catalyst component for olefin polymerization

Solid catalyst components for polymerization of .alpha.-olefins

Solid catalyst for heterogeneous reactions