A kind of catalyst, its preparation method and the preparation method of 2-ethylhexanal

A technology of ethylhexanal and catalyst, which is applied in catalyst activation/preparation, preparation of organic compounds, preparation of carbon-based compounds, etc., can solve the problems of low catalyst processing capacity and high energy consumption in the separation process, and achieve the suppression of decarbonization by-products. , the effect of increasing the processing capacity and reducing the cost of the catalyst

Active Publication Date: 2021-03-09
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] One of the purposes of the present invention is to provide a catalyst for the preparation of 2-ethylhexanal, so as to solve the problems of low catalyst capacity in the current 2-ethylhexanal production process, high energy consumption in the reaction and subsequent separation process, etc.

Method used

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  • A kind of catalyst, its preparation method and the preparation method of 2-ethylhexanal
  • A kind of catalyst, its preparation method and the preparation method of 2-ethylhexanal
  • A kind of catalyst, its preparation method and the preparation method of 2-ethylhexanal

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Embodiment 1

[0048]235.3 g of trichloride, 23.6 g of magnesium chloride dissolved with 4919 g of water, an aqueous solution of a total mass concentration of 5%, warmed to 40 ° C, add 12% ammonia water, such as aqueous solution, to be aqueous solution pH value to 8-9 The addition of ammonia water was stopped, stirred from 30 min to 60 ° C, stop stirring, deposition of aging for 1 h, washed by filtration, adding a solid amount of about 5% to about 5%, after molding, drying at 90 ° C for drying 24h The catalyst carrier was obtained by high temperature at 1000 ° C for 12 h.

[0049]0.0015gagno3And 0.005GCO (NO3)2· 6h2O was dissolved with 325 g of water, and the total mass concentration of 0.002% nitrate solution was mixed with the previously obtained carrier, 25 wt% NaOH aqueous solution was added to the solution, allowing the solution pH at 7.5-8, at 30 ° C for 1 h. After the obtained suspension was centrifuged, the resulting solid was dried at 90 ° C for 48 h, and then heated at 300 ° C for 12 h, and...

Embodiment 2

[0052]253.6 g of aluminum chloride, 3.86 g of calcium chloride was dissolved with 4034 g of water, which was equipped with a solution of a total mass concentration of 6%, warmed to 40 ° C, adding 12% ammonia water, such as aqueous solution, and the pH of the solution reached 8 The addition of ammonia water is stopped, stirred by stirring to 60 ° C, stop stirring, and then discospect 1H, washed by filtration, adding the amount of a solid of about 5% to 5%, after molding, after 100 ° C After drying 24 h, it was calcined at a high temperature of 1000 ° C for 12 h to obtain a catalyst carrier.

[0053]0.04gagno3And 0.07 g rh (no3)3It was dissolved with 274 g of water, and the total mass concentration of 0.04% nitrate solution was mixed, and 25 wt% NaOH aqueous solution was added to the solution, and the solution pH was added to 7.5-8, at 40 ° C for 1 h, After the obtained suspension was centrifuged, the resulting solid was dried at 100 ° C for 40 h, and then heated at 400 ° C for 12 h to o...

Embodiment 3

[0056]248.1 g of aluminum chloride and 7.98 g of chloride were dissolved using 3402 g of water, and the total mass concentration of 7% aqueous solution was stirred up to 40 ° C, and the pH of aqueous solution was 10 ° C, and the pH of the solution reached 8. The addition of ammonia water is stopped between the -9, stirred at 40 min, and the temperature is lowered, stop stirring, and then the aging of the aging 1.5H, after filtration, the amount of the solid% of the solids of about 5%, after molding, after molding, at 100 ° C It was dried for 36 h, and then 10 h was calcined at 1100 ° C to obtain a catalyst carrier.

[0057]0.031gagno3And 0.05gco (NO3)2· 6h2O and 0.028G RH (NO3)3It was dissolved with 272 g of water, and the total mass concentration of 0.04% nitrate solution was mixed with the previously obtained carrier, 25 wt% NaOH aqueous solution was added to the solution, allowing the solution pH at 7.5-8, at 40 ° C for 1 h, After the obtained suspension was centrifuged, the resulti...

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Abstract

The invention discloses a catalyst for preparing 2-ethylhexanal, comprising Al 2 o 3 carrier, and loaded on the Al 2 o 3 The first metal component and the second metal component on the carrier are characterized in that the first metal component is Ag, and one or both of Co and Rh; the second metal component is Pd ; Based on the total weight of the catalyst, the content of the first metal component is 0.01-0.5wt‰, and the content of the second metal component is 0.01-1.0wt%. The present invention also discloses a preparation method of the catalyst and a preparation method of 2-ethylhexanal. The invention can efficiently carry out the selective hydrogenation of isooctenal, greatly improves the catalyst processing capacity, has simple technological process, low energy consumption, and meanwhile, the raw material conversion rate reaches 99%, and the product selectivity reaches more than 98.5%.

Description

Technical field[0001]The present invention relates to a catalyst for anoxaldehyde gas phase hydrocarbon 2-ethylhexarcetal, and a method of preparing 2-ethylhexaldehyde using the catalyst.Background technique[0002]2-ethylhexaldehyde, also known as isool (2-EH), synthetic raw materials for synthesizing fragrances and as isooctanoic (also known as 2-ethylhexanoic acid). Isctanoic acid is an important organic chemical product that can be widely used in paints, plastics, tanning, pharmaceutical, wood, chemical fiber, pesticides, etc., but most are used to produce istertable metal salts. Since isoooonic acid has a more obvious drumming effect than naphthenate, it is widely used in the coating industry to meet the needs of people's high-end light-colored coatings. It is mainly used as a salt reagent for synthesis of penicillin sodium salt in medical treatment in medicine. In addition, it is an excellent plasticizer. With the development of industrial and agriculture, it has increased year ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/89B01J23/66B01J37/03B01J37/08B01J37/18C07C47/02C07C45/62
CPCB01J23/002B01J23/66B01J23/8946B01J37/0018B01J37/031B01J37/035B01J37/038B01J37/082B01J37/18B01J2523/00C07C45/62B01J2523/22B01J2523/23B01J2523/31B01J2523/25
Inventor 丛鑫刘超何光文曹善健王泽圣崔乾董科王鹏余炎冰黎源华卫琦宋锦宏
Owner WANHUA CHEM GRP CO LTD
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