RU2011143393A

RU2011143393A - DEVELOPMENT OF TECHNOLOGY OF PRODUCTION OF ALKYLATION CATALYSTS

Info

Publication number: RU2011143393A
Application number: RU2011143393/04A
Authority: RU
Inventors: Саламбек Наибович Хаджиев; Ильяс Магомедович Герзелиев; Нина Семеновна Хашагульгова; Наталья Владимировна Окнина
Priority date: 2011-10-27
Filing date: 2011-10-27
Publication date: 2013-05-10
Also published as: RU2505357C2

Abstract

1. Способ получения катализатора алкилирования изобутана олефинами на основе цеолита типа NaNHY при остаточном содержании оксида натрия не более 0,8% масс., включающий обработку цеолита водным раствором соли лантана, сушку и прокалку полученного катализатора, отличающийся тем, что сначала цеолит при перемешивании пропитывают водным раствором нитрата лантана, взятого в количестве, обеспечивающем содержание лантана в конечном катализаторе 0,5%-6,0% масс. - получают суспензию; порошок гидроксида алюминия бемитной структуры пептизируют до рН 1-3 и получают другую суспензию, затем обе суспензии перемешивают, упаривают до состояния формуемости и формуют в гранулы, после чего полученные гранулы провяливают при комнатной температуре, сушат при 50-120°С не менее 5 ч и прокаливают при температуре 150-550°С не менее 4 ч.2. Способ получения катализатора по п.1, отличающийся тем, что после прокалки на катализатор наносят хлорид палладия, взятый в количестве, обеспечивающем содержание палладия в готовом катализаторе 0,2% масс. и растворенный при нагревании в 25% растворе аммиака, катализатор снова провяливают при комнатной температуре, сушат при 120°С и прокаливают при 500°С в течение 3 ч.3. Способ алкилирования изобутана олефинами в присутствии катализатора на основе цеолита типа NaNHY при остаточном содержании оксида натрия не более 0,8% масс., отличающийся тем, что алкилирование проводят в присутствии катализатора, полученного по п.1 или 2.4. Способ алкилирования по п.3, отличающийся тем, что алкилирование изобутана олефинами ведут при температуре 80°С, давлении 12,3 МПа, отношении изобутан : олефины в сырье 10:1, объемной скорости подачи сырья по олефи1. A method of producing an isobutane alkylation catalyst with olefins based on a NaNHY type zeolite with a residual sodium oxide content of not more than 0.8 wt%, comprising treating the zeolite with an aqueous lanthanum salt solution, drying and calcining the resulting catalyst, characterized in that the zeolite is impregnated first with stirring an aqueous solution of lanthanum nitrate, taken in an amount providing a lanthanum content in the final catalyst of 0.5% -6.0% of the mass. - get a suspension; boehmite structure aluminum hydroxide powder is peptized to pH 1-3 and another suspension is obtained, then both suspensions are mixed, evaporated to formability and formed into granules, after which the obtained granules are dried at room temperature, dried at 50-120 ° C for at least 5 hours and calcined at a temperature of 150-550 ° C for at least 4 hours. 2. The method of producing a catalyst according to claim 1, characterized in that after calcination, palladium chloride, taken in an amount providing a palladium content in the finished catalyst of 0.2% by weight, is applied to the catalyst. and dissolved by heating in a 25% ammonia solution, the catalyst is again dried at room temperature, dried at 120 ° C and calcined at 500 ° C for 3 hours. 3. The method of alkylation of isobutane with olefins in the presence of a catalyst based on a NaNHY zeolite with a residual content of sodium oxide of not more than 0.8 wt%, characterized in that the alkylation is carried out in the presence of a catalyst obtained according to claim 1 or 2.4. The alkylation method according to claim 3, characterized in that the alkylation of isobutane with olefins is carried out at a temperature of 80 ° C, a pressure of 12.3 MPa, the ratio of isobutane: olefins in the feedstock 10: 1, the volumetric feed rate of the feedstock through olefins

Claims

1. A method of producing an isobutane alkylation catalyst with olefins based on a NaNH ₄ Y type zeolite with a residual sodium oxide content of not more than 0.8 wt%, comprising treating the zeolite with an aqueous lanthanum salt solution, drying and calcining the resulting catalyst, characterized in that the zeolite is first while stirring, they are impregnated with an aqueous solution of lanthanum nitrate, taken in an amount providing the lanthanum content in the final catalyst of 0.5% -6.0% by weight. - get a suspension; boehmite structure aluminum hydroxide powder is peptized to pH 1-3 and another suspension is obtained, then both suspensions are mixed, evaporated to formability and formed into granules, after which the obtained granules are dried at room temperature, dried at 50-120 ° C for at least 5 hours and calcined at a temperature of 150-550 ° C for at least 4 hours

2. The method of producing the catalyst according to claim 1, characterized in that after calcination, palladium chloride, taken in an amount providing a palladium content in the finished catalyst of 0.2% by weight, is applied to the catalyst. and dissolved by heating in a 25% ammonia solution, the catalyst was again dried at room temperature, dried at 120 ° C and calcined at 500 ° C for 3 hours

3. The method of alkylation of isobutane with olefins in the presence of a catalyst based on a zeolite of the NaNH ₄ Y type with a residual sodium oxide content of not more than 0.8 wt%, characterized in that the alkylation is carried out in the presence of a catalyst obtained according to claim 1 or 2.

4. The alkylation method according to claim 3, characterized in that the alkylation of isobutane with olefins is carried out at a temperature of 80 ° C, a pressure of 12.3 MPa, the ratio of isobutane: olefins in the feedstock 10: 1, the volumetric feed rate of the feedstock for olefins 0.15 h ^{- 1} and the duration of the feed 8 hours