| 摘要 |
FIELD: chemistry.SUBSTANCE: production of a heterogeneous catalyst for producing valuable and energy-saturated gasoline components by alkylating isobutane with olefins based on a NaNHY zeolite with residual content of sodium oxide of not more than 0.8 wt %, involving treating the zeolite with aqueous solution of a lanthanum salt, extrusion moulding, drying and calcining the obtained catalyst, wherein the zeolite is treated with aqueous lanthanum nitrate solution taken in an amount which ensures content of lanthanum in the end catalyst of 0.5-3.5 wt %; said treatment is carried out at 90-135°C and saturated vapour pressure; after treating with aqueous lanthanum nitrate solution, the zeolite is further treated with aqueous ammonium nitrate solution and a wet cake is obtained; said cake is mixed with another wet cake obtained from binder - aluminium hydroxide with a boehmite structure, which is peptised at pH 1-4 with a solution of a mineral or organic acid; the obtained mixture is evaporated; after moulding, the extruded articles are cured; drying is carried out at 120°C for 5 hours; calcination is carried out first at 300°C for 1.5 hours and then at 500°C for 2.5 hours; after calcination, palladium chloride is deposited on the catalyst, said palladium chloride being dissolved while heating in 25% ammonia solution and taken in an amount which ensures content of palladium in the finished catalyst of 0.05-0.3 wt %, and the catalyst is cured again at room temperature, dried at 120°C and cured at 500°C for 3 hours.EFFECT: cheap method of producing the catalyst is disclosed.2 cl, 1 tbl, 8 ex |
