THE CATALYST, THE METHOD OF ITS PREPARATION AND THE METHOD OF PRODUCTION OF THE MIXTURE OF HYDROGEN WITH THE LOW CONCENTRATION OF AROMATIC COMPOSITIONS Russian patent published in 2012 - IPC B01J29/44 B01J21/06 B01J37/04 B01J23/10 B01J23/06 C07C1/20 

FIELD: petrochemistry.

SUBSTANCE: invention relates to catalysts used for hydrocarbons production; the method describes the catalyst of the hydrocarbons mixture synthesis with low concentration of aromatic hydrocarbons on the basis of the pentasyl type crystalline aluminum silicate-zeolite with SiO₂/Al₂O₃=25-100 containing not more than 0.1 % of sodium oxide, zinc oxide, palladium and the binder, at that it additionally contains zirconium oxide and/or lanthanum oxide with the following proportion of the components: zinc oxide - 0.5-2.0 %, zirconium oxide - 0.2-1.0%, and/or lanthanum oxide - 0.2-1.0%,palladium - 0.1-1.0%, zeolite - 65.0%, the binder makes up the rest of the total mass; the summary describes the method of production of the catalyst of the hydrocarbons mixture synthesis with a low concentration of the aromatic hydrocarbons according to art. 1 including the modification pentasyl type zeolite with SiO₂/Al₂O₃=25-100 containing not more than 0.1 % of sodium oxide by means of zinc oxide, palladium; procedure of mixing with the binder, formation of extrudates, their drying and firing wherein the ammoniacal zeolite is primarily modified with water solutions of lanthanum nitrate and/or nitrate zirconium taken in the amount securing the concentration of zirconium oxide in the ready to use catalyst in the amount of 0.2-1.0% and/or lanthanum oxide - 0.2-1.0%; the modified zeolite is dried and fired thereafter amid the ionic exchange the water solution of zinc nitrate in the amount securing the concentration of zinc oxide in the ready to use catalyst equal to 0.5- 2.0% is added to zeolite, then the binder is added into the received mixture and the extrudates are prepared, thereafter they are dried and fired again, after that the catalyst extrudates are soaked with the water solution of palladous chloride taken in the amount securing the concentration of the palladium in the ready to use catalyst in the amount of 0.1-1.0 %, and then they are dried and fired to form the oxides of correspondent metals; the method of synthesis of the mixture of hydrocarbons from the gases containing methoxymethane is described herein, as well as the synthesis gas (CO, CO₂ H₂) in the presence of the above catalyst, at that the procedure is executed in the circulation mode upon the circulation ratio of 10-35, the mixture of gases with hydrogen concentration in the synthesis-gas not less than 71% of the total volume is used as the mixture of gases.

EFFECT: reduction of concentration of aromatic compositions up to 8.0 % including durol - not more than 0.7% and the enhancement of the productivity of the procedure up to 120 g/m of synthesis-gas.

3 cl, 2 tbl, 13 ex