Process for the preparation of ferrierite and its use as dewaxing catalyst (carrier)

Abstract From the Canadian patent

Process for the preparation of ferrierite which comprises maintaining an aqueous starting mixture containing at least one silicon compound, at least one aluminium compound at, least one alkali metal (M) compound and at least one organic nitrogen compound (RN) selected from the group consisting of piperidine, pyridine, alkyl-substituted piperidines and pyridines, piperazine, 4-picoline and 4-picoline-N-oxide at an, elevated temperature until crystalline ferrierite has formed in, which starling mixture the various compounds are present in the following molar ratios, the aluminiumsilicon- and alkali metal-, compounds being calculated on basis of the oxides S1O2 : M2O - 7.3 to 15.6, S1O2 : …