Abstract: The instant invention relates to fuels based on methanol and/or ethanol which contain additionally mixtures of C.sub.4 -hydrocarbons with C.sub.5 /C.sub.6 - and/or C.sub.5 -C.sub.7 -hydrocarbons and/or gasoline.

Abstract: This invention relates to a process for reacting phenol, mono- and di-alkyl phenols having at least one free o-position with methanol and/or dimethyl ether in the gas phase to form o-substituted phenols in the presence of a catalyst of oxides of iron, chromium, silicon and at least one oxide of an alkaline-earth metal, lanthanum and manganese or in the presence of a catalyst of oxides of iron, chromium, a metal from the group comprising germanium, titanium, zirconium, tin, lead, and at least one oxide of an alkali metal, alkaline-earth metal, lanthanum and manganese.