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Catalyst for synthesizing higher branched alcohols, preparation method and application

A technology for catalysts and branched alcohols, which is applied in the preparation of organic compounds, chemical instruments and methods, and the preparation of hydroxyl compounds. It can solve problems such as the mismatch of active centers on catalysts, and achieve high conversion rates of raw material alcohols, low production costs, and The effect of easy product separation

Active Publication Date: 2020-12-25
SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned catalysts still have many problems in terms of catalyst activity, selectivity and stability, the main reason is that the active centers on the catalyst do not match

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 1.8g of copper nitrate hexahydrate, 128.2g of magnesium nitrate hexahydrate, 0.5g of zinc nitrate hexahydrate, 4.0g of 25wt% acidic silica sol and dissolve in 1050mL of deionized water to obtain a solution A with a total metal ion concentration of 0.5M. Prepare 1.0M ammonia water B and 3.0M urea aqueous solution C respectively. Under stirring at 40° C., solution B was added to solution A until the pH value in the solution reached 6.0, then the addition of solution B was stopped, and stirring was continued for 6 h. The solution obtained above was added to 700 mL of solution C, mixed evenly, added to an autoclave, and subjected to hydrothermal treatment at 100° C. for 12 hours. The precipitate obtained after hydrothermal treatment was filtered, washed 4 times with deionized water, dried at 90°C for 24h, and calcined at 600°C for 4h. The mass composition of the obtained catalyst was MgO:CuO:SiO 2 : ZnO=100:3:5:1.

[0033] Apply above-mentioned catalyzer to tubular ...

Embodiment 2

[0035]Weigh 2.1 g of copper nitrate hexahydrate, 128.2 g of magnesium nitrate hexahydrate, 26.5 g of aluminum nitrate nonahydrate, and 1.2 g of zinc nitrate hexahydrate and dissolve in 586 mL of deionized water to obtain solution A with a total concentration of metal ions of 1M. Prepare 1.0M ammonia water B and 1.0M urea aqueous solution C respectively. Under stirring at 60°C, solution B was added to solution A until the pH value in the solution reached 6.5, then the addition of solution B was stopped and stirring was continued for 2 hours. The solution obtained above was added to 600 mL of solution C, mixed evenly, added to an autoclave, and hydrothermally treated at 120° C. for 8 hours. The precipitate obtained after hydrothermal treatment was filtered, washed 5 times with deionized water, dried at 100°C for 16 hours, and calcined at 550°C for 4h. The mass composition of the obtained catalyst was MgO:CuO:Al 2 o 3 : ZnO=100:3.5:18:2.5.

[0036] Apply the above catalyst to ...

Embodiment 3

[0038] Weigh 2.4g of copper nitrate hexahydrate, 128.2g of magnesium nitrate hexahydrate, 4.0g of titanyl sulfate, and 3.5g of ferric nitrate nonahydrate and dissolve them in 363mL of deionized water to obtain a solution A with a total concentration of metal ions of 1.5M. Prepare 1.0M ammonia water B and 1.0M urea aqueous solution C respectively. Under stirring at 55°C, solution B was added to solution A until the pH value of the solution reached 7.0, then the addition of solution B was stopped, and stirring was continued for 3 hours. The solution obtained above was added to 470 mL of solution C, mixed evenly, added to an autoclave, and subjected to hydrothermal treatment at 80° C. for 16 hours. The precipitate obtained after hydrothermal treatment was filtered, washed 6 times with deionized water, dried at 120°C for 10h, and calcined at 600°C for 4h. The mass composition of the obtained catalyst was MgO:CuO:TiO 2 : Fe 2 o 3 =100:4:10:3.5.

[0039] Apply above-mentioned ca...

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PUM

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Abstract

The invention discloses a catalyst for synthesizing a higher branched chain alcohol. The catalyst for synthesizing the higher branched chain alcohol comprises MgO, CuO, M1 and M2, the weight percentage of MgO to CuO to M1 to M2 is 100:(3-10):(5-20):(1-5), the M1 is one of silicon oxide, aluminum oxide, titanium oxide, cerium oxide or zirconium oxide, and the M2 is one of zinc oxide, ferric oxide,nickel oxide, chromium oxide and lanthanum oxide. The catalyst has the advantages of high activity and high selectivity and high stability.

Description

technical field [0001] The invention relates to a catalyst for alcohol-alcohol condensation reaction, its preparation method and application, in particular to a catalyst for synthesizing higher branched chain alcohols, its preparation method and application. [0002] technical background [0003] Higher Branched Alcohol C n h (2n+1) OH (7≤n≤9) is an important chemical raw material, widely used in the manufacture of plasticizers, lubricants and detergents, and due to C n h (2n+1) OH (7≤n≤9) has an energy value similar to that of gasoline and has a low affinity to water. It is also often used as a fuel and clean fuel additive to increase the octane number of gasoline and reduce pollution emissions. [0004] At present, the processes for producing higher branched chain alcohols mainly include Craft and OXO Craft. The reaction involved in the process requires five steps, using toxic organoaluminum as a catalyst; the OXO process requires at least two steps to complete, usin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/80B01J23/745B01J23/83B01J23/86C07C29/34C07C31/125
CPCB01J23/002B01J23/745B01J23/80B01J23/83B01J23/868B01J2523/00C07C29/34B01J2523/17B01J2523/41B01J2523/27B01J2523/31B01J2523/3712B01J2523/847B01J2523/47B01J2523/842B01J2523/48B01J2523/67C07C31/125
Inventor 李德宝郭荷芹贾丽涛侯博肖勇
Owner SHANXI INST OF COAL CHEM CHINESE ACAD OF SCI
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