Three-way copper catalyst applied to synthesizing organic silicon monomer and preparation method thereof

A ternary copper and catalyst technology, applied in the direction of organic chemistry, chemical instruments and methods, compounds of group 4/14 elements of the periodic table, etc., can solve the problems of certain investment costs, environmental pollution, etc., and achieve low impurity content and high reaction efficiency. The equipment requirements are simple, and the effect of improving catalyst activity and selectivity

Inactive Publication Date: 2013-06-12
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the process of reducing copper sulfate monohydrate into copper powder by this method, a large amount of sulfur dioxide will be produced in its production,

Method used

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  • Three-way copper catalyst applied to synthesizing organic silicon monomer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Example 1: Preparation of a ternary copper-based catalyst for the synthesis of organosilicon monomers. The following process steps are used: crush copper oxide into raw materials with a particle size of 1-10 μm, use hydrogen and nitrogen decomposed from ammonia as reducing gases, At a temperature of 350°C, copper oxide is reduced into metal copper powder in a reduction furnace, and the reduced metal copper powder is put into a fluidized bed, and a nitrogen-oxygen mixture with an oxygen pressure of no more than 0.005MPa is passed through the bottom of the bed. After oxidizing metallic copper at a temperature of 150° C. to 250° C. for 2 hours, a finished copper catalyst containing cuprous oxide, metallic copper and copper oxide is obtained.

[0020] Use the above method to make multiple times continuously, obtain the ternary copper catalyst for the synthesis of organosilicon monomers, and measure the average value. Among them, the components and weight percentages are: cup...

Embodiment 2

[0021] Example 2: Preparation of ternary copper-based catalysts for the synthesis of organosilicon monomers. The following process steps are used: crush copper oxide into raw materials with a particle size of 1-8 μm, use hydrogen and nitrogen decomposed from ammonia as reducing gases, At a temperature of 350°C, copper oxide is reduced into metal copper powder in a reduction furnace, and the reduced metal copper powder is put into a fluidized bed, and nitrogen-oxygen mixed gas with an oxygen pressure not exceeding 0.010MPa is passed through the bottom of the bed, After oxidizing metallic copper at a temperature of 240° C. for 5 hours, a finished copper catalyst containing cuprous oxide, metallic copper and copper oxide was obtained.

[0022] Use the above method to make 3 times continuously, obtain the ternary copper-based catalyst for the synthesis of organosilicon monomers, and measure the average value. Copper 8.25%, after reducing the crushing particle size in the raw mater...

Embodiment 3

[0023] Example 3: Preparation of ternary copper-based catalysts for the synthesis of organosilicon monomers. The following process steps are used: crush copper oxide into raw materials with a particle size of 1-10 μm, use hydrogen and nitrogen decomposed from ammonia as reducing gases, At a temperature of 350°C, copper oxide is reduced into metal copper powder in a reduction furnace, and the reduced metal copper powder is put into a fluidized bed, and a nitrogen-oxygen mixture with an oxygen pressure of no more than 0.015MPa is passed through the bottom of the bed. After oxidizing metallic copper at a temperature of 250° C. for 7 hours, a finished copper catalyst containing cuprous oxide, metallic copper and copper oxide was obtained.

[0024] Use the above method to make 3 times continuously, obtain the ternary copper catalyst used for the synthesis of organosilicon monomer, and measure the average value. Copper 11.95%.

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Abstract

The invention discloses a three-way copper catalyst applied to synthesizing organic silicon monomer and a preparation method of the three-way copper catalyst. The preparation method comprises the following steps of: crushing copper oxide to be with a granularity of 1-10 micrometers; using hydrogen and nitrogen decomposed by ammonia as reducing gases to reduce the copper oxide in a reduction furnace with the temperature of 200-450 DEG C into metal copper powder; filling the reduced metal copper powder into a fluidized bed, introducing an oxygen-nitrogen mixture with an oxygen pressure not more than 0.015 MPa through the bed bottom to oxidize the metal copper at the temperature of 100-250 DEG C for 2-7 hours, thus obtaining copper catalyst product including cuprous oxide, metal copper and copper oxide, wherein the copper catalyst product comprises the following components in percentage by weight: 20-40% of cuprous oxide, 40-80% of metal copper and 1-12% of copper oxide. According to the preparation method, the employed copper oxide material is low in impurity content, impurities are not introduced in the synthesis of organic silicon monomer, requirement on reaction equipment in the preparation process is simple, three wastes (waste gas, waste water and waste residues) are not generated in the process, and a mass of holes are generated due to the departure of oxygen after the copper oxide is employed to carry out reduction, so that the activity and selectivity of the catalyst are improved.

Description

technical field [0001] The invention relates to a preparation method of a ternary copper catalyst used for synthesizing organosilicon monomers and the ternary copper catalyst prepared by the method. Background technique [0002] Catalysts play a particularly important role in the direct synthesis of organochlorosilanes. Almost all metals commonly found in the periodic table and their important chlorides or oxides have been tried. However, classical copper is still the most effective catalyst for the direct synthesis of organochlorosilanes. The activity, lifetime, and selectivity of copper-based catalysts are not only related to the chemical composition of the copper-based catalyst itself, but also to its fineness, structure, and closeness to silicon. related to the degree of contact. Therefore, the preparation or treatment method of the copper catalyst has a great influence on its catalytic effect. There are mainly five kinds of Cu catalysts used in the direct method: (1)...

Claims

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Application Information

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IPC IPC(8): B01J23/72C07F7/16
Inventor 张新涛李娟范桂芳宋谋通张科翠陈国栋
Owner JINCHUAN GROUP LIMITED
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