FIELD: chemistry.
SUBSTANCE: invention relates to a method of preparing a catalyst for converting oxygenates to olefins. A method is described for preparing a catalyst for use in the process of converting oxygenates to olefins involving: preparation of a reaction mixture containing aluminium, phosphorus, water and an organic template, as well as an element selected from a group consisting of silicon, magnesium, zinc, iron, cobalt, nickel, manganese, chromium and mixtures thereof, to form a non-zeolite molecular sieve characterised by chemical composition based on dry substance with empirical formula: (ElxAlyPz)O2, in which "x" is mole fraction of El and has a value of at least 0.001, "y" is the mole fraction of Al and has a value of at least 0.01, "z" is the mole fraction of P and has a value of at least 0.01 and x+y+z=1; crystallising the molecular sieves at temperature 100-250°C; washing the molecular sieve without drying the molecular sieve; adding a first binder comprising sodium silicate and acid alum to the washed molecular sieve to form a catalyst slurry; spray drying the catalyst slurry, and calcining at a temperature above 500°C to form an attrition resistant catalyst. Also described is a catalyst meant for use in the process of converting oxygenates to olefins, prepared using the said method.
EFFECT: obtaining strong catalyst with high attrition resistance.
14 cl, 2 ex
