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Molecular sieve catalyst for synthesizing triisopropylbenzene, and preparation method thereof, and synthesis method of triisopropylbenzene

A technology of triisopropylbenzene and molecular sieves, which is applied in the direction of molecular sieve catalysts, including molecular sieve catalysts, catalyst activation/preparation, etc., can solve the problems of poor crystallization effect, high crystallization temperature, and long crystallization time, and achieve gelation Good effect, good water solubility, short time required for crystallization

Active Publication Date: 2020-06-30
PETROCHINA CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] The main purpose of the present application is to provide a molecular sieve catalyst for synthesizing triisopropylbenzene, a preparation method and a synthetic method of triisopropylbenzene, so as to solve the problem of higher crystallization temperature, Long crystallization time and poor crystallization effect

Method used

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  • Molecular sieve catalyst for synthesizing triisopropylbenzene, and preparation method thereof, and synthesis method of triisopropylbenzene
  • Molecular sieve catalyst for synthesizing triisopropylbenzene, and preparation method thereof, and synthesis method of triisopropylbenzene
  • Molecular sieve catalyst for synthesizing triisopropylbenzene, and preparation method thereof, and synthesis method of triisopropylbenzene

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preparation example Construction

[0039] In a typical implementation of the present application, a method for preparing a molecular sieve catalyst for synthesizing triisopropylbenzene is provided, such as figure 1 As shown, the preparation method includes: step S1, mixing and stirring the alkaline solution of the aluminum source, the silicon source, the composite template agent and the auxiliary molecular sieve to form a gel, and the above composite template agent includes hexamethylene methylene Amine and morpholine; step S2, crystallize the above-mentioned jelly to form a crystallization; step S3, sequentially wash, first exchange and first roast the above-mentioned crystallization to form the original powder of HMCM-49 molecular sieve; step S4 , at least carry out sequentially kneading, rolling, extruding, first drying and second roasting to the above-mentioned HMCM-49 molecular sieve raw powder to obtain HMCM-49 molecular sieve.

[0040] The catalyst is used in the reaction of propylene and diisopropylbenz...

Embodiment 1

[0064] Dissolve 0.10kg sodium metaaluminate and 0.02kg sodium hydroxide completely in 0.6kg desalted water to prepare sodium metaaluminate-sodium hydroxide aqueous solution; 0.50kg morpholine is added in 0.10kg hexamethyleneimine, fully Stir to prepare a composite template. Add 1 kg of silica sol with a mass content of 30% into the gel forming tank, start stirring, add the composite template agent, stir evenly, add sodium metaaluminate-sodium hydroxide aqueous solution dropwise to the "thick point", increase the stirring speed, turn on the condensation Glue, slowly add the remaining silica sol; then add 6g NaMCM-49 molecular sieve, stir for 2h to form gel.

[0065]Put the gelled slurry into a 5L crystallization kettle, start stirring at a stirring speed of 40r.p.m, and press the feeding port tightly; turn on the heat-conducting oil circulation pump and heat-conducting oil heater, and heat the temperature in the crystallization kettle to 150°C. Keep the temperature constant fo...

Embodiment 2

[0075] Dissolve 0.10kg sodium metaaluminate and 0.012kg sodium hydroxide completely in 1.20kg desalted water to prepare sodium metaaluminate-sodium hydroxide aqueous solution; add 0.30kg morpholine to 0.1kg hexamethyleneimine, fully Stir to prepare a composite template. Add 1 kg of silica sol with a mass content of 30% into the gel forming tank, start stirring, add the composite template agent, stir evenly, add sodium metaaluminate-sodium hydroxide aqueous solution dropwise to the "thick point", increase the stirring speed, turn on the condensation Add the remaining silica sol slowly; then add 0.005kg NaMCM-49 molecular sieve, stir for 2 hours to form gel.

[0076] Put the gelled slurry into a 5L crystallization kettle, start stirring at a stirring speed of 70r.p.m, and press the feeding port tightly; turn on the heat-conducting oil circulation pump and heat-conducting oil heater, and heat the temperature in the crystallization kettle to 140°C. Keep the temperature constant f...

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Abstract

The invention provides a molecular sieve catalyst for synthesizing triisopropylbenzene, a preparation method of the molecular sieve catalyst, and a synthesis method of the triisopropylbenzene. The preparation method comprises the following steps: S1, mixing and stirring an alkaline solution of an aluminum source, a silicon source, a composite template agent and an auxiliary molecular sieve, and carrying out gelatinization to form a jelly, wherein the composite template agent comprises hexamethyleneimine and morpholine; S2, crystallizing the jelly to form a crystallized substance; S3, sequentially carrying out washing, first exchange and first roasting on the crystallized substance to form HMCM-49 molecular sieve raw powder; and S4, sequentially at least carrying out kneading, rolling, strip extrusion, first drying and second roasting on the HMCM-49 molecular sieve raw powder to prepare the HMCM-49 molecular sieve. According to the preparation method, a composite template agent containing hexamethyleneimine and morpholine is adopted, and the obtained HMCM-49 molecular sieve is small in grain size, wherein the grain size ranges from 50 nm to 200 nm.

Description

technical field [0001] The application relates to the field of chemical industry, in particular, to a molecular sieve catalyst for synthesizing triisopropylbenzene, a preparation method and a synthesis method of triisopropylbenzene. Background technique [0002] Triisopropylbenzene is the main fine chemical and intermediate product, widely used in beverages, flavors, medicines, pesticides and fungicides, and is the raw material for the production of trisphenol. [0003] The industry mainly uses cumene and propylene to synthesize triisopropylbenzene (including the alkylation reaction of dicumene and propylene to prepare triisopropylbenzene), and also uses isopropanol and benzene under the action of an acidic catalyst Alkylation synthesis of triisopropylbenzene. The catalysts prepared in industry mainly use aluminum trichloride, phosphoric acid / diatomaceous earth, aluminum trichloride or phosphoric acid / diatomaceous earth. The disadvantages of the above-mentioned several ind...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J29/70B01J37/08C07C15/02C07C2/66
CPCB01J29/70B01J37/0018C07C2/66C07C2529/70C07C15/02Y02P20/52
Inventor 邓广金李菁朱玉赵胤李正侯立波肖冰
Owner PETROCHINA CO LTD
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