| 摘要 |
FIELD: chemistry.SUBSTANCE: method of obtaining catalyst includes modification of catalyst based on silicoalumophosphates by method of impregnating by water capacity from silicon source solution or impregnation from silicon source solution - trimethyl siloxysilsesquioxane. Obtained catalyst contains from 0.1 to 10 wt % of silicon. As catalyst based on silicoalumophosphates used are molecular sieves of SAPO-18 to SAPO-34 type, for molecular sieves, containing their cocrystallised phases. Method of synthesis of lower olefins includes conversion of carbon-containing raw material in presence of said catalyst. As carbon-containing raw material used is methanol or its water solution, which contains from 25 to 100 wt % of methanol, or dimethyl alcohol, or chloromethane. Conversion is carried out in gas phase at 350-500°C, atmospheric pressure and rate of raw material supply 0.5-15 g/g/h, in the presence of gas-diluent.EFFECT: ensuring hollow conversion of carbon-containing raw material and increased output of C-Colefis.10 cl, 1 tbl, 17 ex |
