Synthesis method of alcohol compound

A synthesis method and technology of aldehyde compounds, which are applied in the field of synthesis of alcohol compounds, can solve problems such as poor thermal stability, fire accidents, and reduced activity, and achieve the effects of low risk, guaranteed safety, and high activity

Pending Publication Date: 2020-07-31
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the Raney nickel catalyst has high activity, it is easy to spontaneously ignite in the air and needs to be handled carefully, otherwise it is prone to fire accidents
Nickel-based amorphous catalysts have superior performance in the hydrogenation of unsaturated compounds, but amorphous alloy catalysts have a metastable structure and poor thermal stability. As the reaction continues, the catalyst gradually transforms into a crystalline state, so that Irreversible changes in the structure of the catalyst, resulting in a decrease in its activity

Method used

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  • Synthesis method of alcohol compound
  • Synthesis method of alcohol compound
  • Synthesis method of alcohol compound

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preparation example Construction

[0056] The invention provides a method for synthesizing aldehyde compounds, comprising: using a carbon-coated nickel nanocomposite material containing alkali metals as a catalyst, and catalyzing the aldehyde compounds for hydrogenation reduction reaction under a hydrogen atmosphere; the chemical reaction equation is illustrated as follows:

[0057]

[0058] Wherein, the nanocomposite material has a core-shell structure with a shell and an inner core, the shell is a graphitized carbon layer containing alkali metal and oxygen, and the inner core is nickel nanoparticles.

[0059] In some embodiments, the catalyst accounts for 1%-50% of the mass of the aldehyde compound, preferably 5%-30%.

[0060] In some embodiments, the hydrogenation reduction reaction temperature is generally 80°C-180°C.

[0061] In some embodiments, the pressure of the hydrogen is generally 2MPa˜5MPa.

[0062] In some embodiments, wherein the catalyst and the aldehyde compound are mixed in a solvent to ca...

preparation example 1

[0099] (1) Weigh 10g of nickel acetate and 10g of citric acid into a beaker containing 30mL of deionized water, stir at 70°C to obtain a homogeneous solution, continue heating and evaporate to dryness, and obtain a solid precursor.

[0100] (2) Place the solid precursor obtained in step (1) in a porcelain boat, then place the porcelain boat in the constant temperature zone of the tube furnace, feed nitrogen gas with a flow rate of 100mL / min, and set the temperature at a rate of 5°C / min. Raise the temperature to 650°C, stop the heating after keeping the temperature for 2 hours, and cool to room temperature under a nitrogen atmosphere to obtain a carbon-coated nickel material.

[0101] (3) Weigh 2 g of the material obtained in step (2), add 4 ml of an aqueous solution containing 0.1538 potassium bicarbonate, stir at room temperature for 24 hours, and dry to obtain a potassium-containing carbon-coated transition nickel material.

[0102] (4) Place the material obtained in step (3...

preparation example 2

[0108] (1) Weigh 10g of nickel acetate and 20g of citric acid into a beaker containing 50mL of deionized water, stir at 80°C to obtain a homogeneous solution, continue heating and evaporate to dryness, and obtain a solid precursor.

[0109] (2) Place the solid precursor obtained in step (1) in a porcelain boat, then place the porcelain boat in the constant temperature zone of the tube furnace, feed in nitrogen gas with a flow rate of 150mL / min, and heat at a rate of 5°C / min. Raise the temperature to 600°C, stop heating after keeping the temperature for 2 hours, and cool to room temperature under a nitrogen atmosphere to obtain a carbon-coated nickel material.

[0110] (3) Weigh 2 g of the material obtained in step (2), add 15 mL of 1M KOH aqueous solution, stir at room temperature for 24 h, filter, and finally dry at 120° C. to obtain a potassium-containing carbon-coated nickel material.

[0111] (4) The dried material obtained in step (3) is placed in a porcelain boat, and th...

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Abstract

The invention provides a synthesis method of an alcohol compound. The synthesis method comprises the following steps: taking a carbon-coated nickel nano composite material containing alkali metals asa catalyst, and catalyzing a hydrogenation reduction reaction of an aldehyde compound in a hydrogen atmosphere; wherein the nano composite material contains a core-shell structure with a shell layer and an inner core, the shell layer is a graphitized carbon layer containing alkali metals and oxygen, and the inner core is nickel nano particles. According to the synthesis method, the nano compositematerial is used as a catalyst; a carbon material and nickel nano particles generate a synergistic effect and a good catalytic effect, the alkali metals of the shell layer further synergistically improve the catalytic performance of the nano material, and the catalyst is used for hydrogenation reduction of aldehyde to synthesize the alcohol compound and has excellent activity, selectivity and safety.

Description

technical field [0001] The invention belongs to the field of catalysis, and in particular relates to a method for synthesizing alcohol compounds. Background technique [0002] Alcohol compounds are very important chemical intermediates, which are widely used in organic solvents, fine chemicals, medicine, pesticides, household cosmetics and other industries. For example, n-butanol is an important chemical raw material, which can be used to prepare plasticizers such as butyl phthalate, aliphatic dibasic acid ester, butyl phosphate and other chemical products such as butyric acid, butylamine and butyl acrylate. Raw materials, also used in solvents, dehydrating agents, anti-emulsifiers, oils, spices, antibiotics, vitamins and other extractants, additives for alkyd resin coatings, defoamers, mineral dressing agents, etc., have a wide range of uses and broad market prospects . [0003] The production process of n-butanol in industry usually uses propylene and oxo gas to generate...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J35/10B82Y30/00B82Y40/00C07C29/141C07C31/12
CPCB01J23/78C07C29/141B01J35/397B01J35/33B01J35/615B01J35/633B01J35/69B01J35/647C07C31/12
Inventor 谢婧新宗明生荣峻峰吴耿煌于鹏林伟国纪洪波
Owner CHINA PETROLEUM & CHEM CORP
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