III International Conference

PP-I-5Catalytic properties of synthetic laboratory samples of metal-containing zeolite catalystswere studied by labor pilot flow setup at pressure 0,1 MPa, temperature from 350 to 450 °C,flow rate of MeOH = 1 h -1 , GHVS = 1000-3000 l/l cat*hour.It was found, that activity and selectivity of catalyst depends from zeolite type, metalnature in catalyst composition and experiment conditions. Gaseous products of reactioncontained of C 1 -C 8 hydrocarbons, as paraffins, as olefins, normal and iso-structure both.Liquid hydrocarbons are almost non-produced. .High yields of light olefins C 2 -C 4 were obtained on SAPO-34 based catalyst at350-375 °C - 74-83 % (29-35 % C 2= , 38-47 % C 3= , 7-3 % C 4= ). Yield of C 5+ hydrocarbons isinessential, basically less 1%. Sufficiently high selectivity of light olefins obtaining onSAPO-34 was conditioned by its crystallite frame, pore sizes equally same sizes of respondentmolecules in it, and confined of obtaining of molecules with more molecular weight.SAPO-34 based catalyst showed high selectivity during first 3-4 hours of work, thendeactivated. After catalyst regeneration into reactor by air flow at 550 °C its activity totallyrecovered.Obtained results are approximated to data of firms “UOP and Norsk Hydro”.ZSM-5 type zeolite based catalyst showed yield of C 2= -C 4= olefins is about 52-61 %,ethylene near 12 %, propylene 23-32 % and butylenes 16 %. C 5+ hydrocarbons of gasolinefraction, were obtained mainly as by-products along with light olefins. Formation of C 5+hydrocarbons on ZSM based catalysts may be conditioned by crystallite structure of zeoliteand experiment conditions. Growth of methane formation was observed for ZSM-5 basedcatalysts with temperature increasing. These catalysts differ more stable work from SAPO-34based catalysts.16