The process of the present invention involves reducing the sulfur and/or nitrogen content of a distillate feedstock to produce a refinery transportation fuel or blending components for refinery transportation fuel, by contacting the feedstock with an oxygen-containing gas in an oxidation zone at oxidation conditions in the presence of an oxidation catalyst comprising a zeolitic material, TIQ-6, whose chemical composition corresponds to the formula, expressed as oxides, SiO.sub.2:zZO.sub.2:mMO.sub.2:xX.sub.2O.sub.3:aH.sub.2O Wherein Z is Ge, Sn, z is between 0 and 0.25 mol.mol.sup.-1 M is Ti or Zr, M has a value between 0.00001 and 0.25, preferably between 0.001 and 0.01, and a=has a value between 0 and 2.