Rare earth metal ion exchanged ferrierite
Rare earth stabilized aluminum deficient zeolite
Rare earth-containing Y zeolite compositions
Rare earth-containing Y zeolite compositions
Reaction medium improving the characteristics of absorption and
Reduced and stabilized hydrogenation catalysts
Reduction in the quantity of NO.sub.x in lean exhaust gas of mot
Reforming catalyst system with differentiated acid properties
Reforming using a bound zeolite catalyst
Regenerable high capacity sorbent for removal of mercury...
Regenerative Cu La zeolite supported desulfurizing sorbents
Regioselective methylation of toluene to para-xylene
Removal of titanium atoms from titanium silicate molecular sieve
Remover for heavy metals contained in water
Rhenium-containing transalkylation catalysts and processes...