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Copper-based Cu-Cu2O-CuO catalyst as well as preparation method and application thereof

A cu-cu2o-cuo, catalyst technology, applied in the field of chemical catalysts, can solve the problems of uneven mixing between components, catalyst gap, high catalyst production cost, etc.

Active Publication Date: 2015-08-26
TAIXING SMELTING PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the high production cost of the catalyst in the above-mentioned prior art, the M2 selectivity and catalytic activity of the domestic catalyst are significantly different from the catalyst of the SCM company in the United States, and the problems such as uneven mixing between components during the production of the catalyst, the present invention provides a Copper-based Cu-Cu 2 O-CuO catalyst and its preparation method and application

Method used

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  • Copper-based Cu-Cu2O-CuO catalyst as well as preparation method and application thereof
  • Copper-based Cu-Cu2O-CuO catalyst as well as preparation method and application thereof
  • Copper-based Cu-Cu2O-CuO catalyst as well as preparation method and application thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0076] Catalyst preparation:

[0077] (1) Weigh 37.5g copper sulfate pentahydrate and add it to 300mL deionized water to form a copper salt solution (copper ion concentration is 0.5mol / L);

[0078] (2) Add 50mL 6mol / L NaOH solution to the resulting solution and stir to obtain Cu(OH) 2 Precipitate, control and stir at 75°C for 10min so that Cu(OH) 2 Precipitation is transformed into CuO precipitation;

[0079] (3) Add 2.52 mL of 80% N 2 h 4 ·H2 O solution was stirred at 70°C for 1.5h. After the reaction, the obtained reaction product was filtered, washed with water and absolute ethanol for 5 times, and vacuum-dried at 60°C for 8h to obtain a controllable multi-component copper-based catalyst powder.

[0080] The composition (mass percentage) of gained copper catalyst after chemical analysis is: Cu 14.5%, Cu 2 O 70.1% and CuO 15.4%.

[0081] Catalyst Characterization:

[0082] figure 1 It is the XRD figure of the copper catalyst that embodiment 1 obtains, wherein 2θ=36.4...

Embodiment 2

[0086] Catalyst preparation:

[0087] (1) Take 25g of copper sulfate pentahydrate and add it to 400mL alcohol-water mixed solution (wherein the volume percentage of ethanol is 10%, and the volume percentage of water is 90%) to form a copper salt solution (copper ion concentration is 0.25mol / L) ;

[0088] (2) Adding 50mL of NaOH solution with a concentration of 4mol / L in the resulting solution stirred to obtain Cu(OH) 2 Precipitate, control and stir at 72°C for 20min so that Cu(OH) 2 Precipitation is transformed into CuO precipitation;

[0089] (3) Add 2.21mL of 80% N 2 h 4 ·H 2 O solution, stirred at 80° C. for 1 h, filtered the obtained reaction product after the reaction, washed 5 times with water and absolute ethanol, and vacuum-dried at 70° C. for 8 h to obtain a controllable multi-component copper-based catalyst powder.

[0090] Gained copper catalyst composition (mass percentage) is as follows after chemical method analysis: Cu 18.2%, Cu 2 O 68.2% and CuO 13.6%. ...

Embodiment 3

[0096] Catalyst preparation:

[0097] (1) Weigh 37.5g copper sulfate pentahydrate and add it to 300mL deionized water to form a copper salt solution (copper ion concentration is 0.5mol / L);

[0098] (2) Add 50mL 6mol / L NaOH solution to the resulting solution and stir to obtain Cu(OH) 2 Precipitate, control and stir at 75°C for 10min so that Cu(OH) 2 Precipitation is transformed into CuO precipitation;

[0099] (3) Add dropwise 1.56mL of 80% N 2 h 4 ·H 2 O solution, stirred at 70°C for 2h, after the reaction, the obtained reaction product was filtered, washed with water and absolute ethanol for 5 times, and vacuum-dried at 60°C for 8h to obtain a controllable multi-element copper-based catalyst powder.

[0100] The composition (mass percentage) of the obtained copper catalyst after chemical analysis is as follows: Cu2O 70.1% and CuO 29.9%.

[0101] Catalyst Characterization:

[0102] Figure 7 CuO-Cu obtained for embodiment 3 2 XRD pattern of O catalyst, where 2θ=36.4° ...

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Abstract

The invention provides a copper-based Cu-Cu2O-CuO catalyst for an organic silicon monomer synthesis reaction as well as a preparation method and an application of the copper-based Cu-Cu2O-CuO catalyst. The catalyst comprises components in percentage by mass as follows: 0-40% of elementary Cu, 40%-90% of Cu2O and 0-40% of CuO, and the sum of mass percentages of all the components is 100%. The method comprises steps as follows: a copper salt is dissolved to form a copper salt solution; an alkaline solution is dropwise added to the copper salt solution, and copper hydroxide precipitate is obtained and then converted into CuO precipitate; then a certain quantity of reducing agent is dropwise added to a CuO suspension for a controllable reduction reaction; obtained reaction products are filtered, washed and subjected to vacuum drying, and then the multicomponent copper-based catalyst is obtained. The experimental process route is simple, the controllability is high, and the prepared multicomponent copper-based catalyst is smaller in particle size and evener in particle size distribution, contains controllable components and shows the higher M2 selectivity and the higher silicon powder raw material conversion ratio.

Description

technical field [0001] The invention belongs to the technical field of chemical catalysts, and relates to a copper-based Cu-Cu used in the synthesis reaction of organosilicon monomers 2 O-CuO catalyst and its preparation method and application, especially a kind of copper-based Cu-Cu for the synthesis of dimethyldichlorosilane with controllable composition 2 O-CuO catalyst and its preparation method and use. Background technique [0002] Organosilicon materials have both the properties of inorganic materials and organic materials, and have excellent properties such as high and low temperature resistance, electrical insulation, corrosion resistance, non-toxic and tasteless, and are widely used in electronics, automobiles, petroleum, chemicals, construction, aerospace and other fields . Methylchlorosilane is the most important organosilicon monomer for the preparation of organosilicon materials, and is the foundation and pillar of the entire organosilicon industry. Among th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/72C07F7/16
Inventor 苏发兵李晶王光娜刘合之朱永霞
Owner TAIXING SMELTING PLANT
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