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Catalyst for preparing 1,4-butanediol by aqueous phase hydrogenation of succinic acid and preparation method thereof

A diacid water, catalyst technology, applied in metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, preparation of hydroxyl compounds, etc.

Active Publication Date: 2021-06-01
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two-stage hydrogenation method increases the complexity of the process

Method used

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  • Catalyst for preparing 1,4-butanediol by aqueous phase hydrogenation of succinic acid and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] (1) tetraethyl orthosilicate, tetrabutyl titanate, water, hydrochloric acid and methanol with a mass concentration of 36% are uniformly mixed; wherein, the quality of water is the total amount of tetraethyl orthosilicate and tetrabutyl titanate 10% of the mass, the mass of hydrochloric acid is 0.1% of the total mass of tetraethyl orthosilicate and tetrabutyl titanate, and the quality of methanol is 1 time of the total mass of tetraethyl orthosilicate and tetrabutyl titanate; After tetraethyl orthosilicate and tetrabutyl titanate are hydrolyzed into a transparent sol, ruthenium chloride is added and stirred evenly to obtain material Ⅰ;

[0027] (2) Spray-dry material I at 120°C to form particles with a diameter of 10 μm, and roast at 400°C for 4 hours to obtain material II;

[0028] (3) The material II is reduced with a sodium formate solution with a mass concentration of 0.1%, the reduction temperature is 50°C, and the reduction time is 2h. After the reduction is comple...

Embodiment 2

[0032] (1) Tetraethyl orthosilicate, tetrabutyl titanate, water, hydrochloric acid and ethanol with a mass concentration of 36% are uniformly mixed; wherein, the quality of water is the total amount of tetraethyl orthosilicate and tetrabutyl titanate 30% of the mass, the quality of hydrochloric acid is 1% of the total mass of tetraethyl orthosilicate and tetrabutyl titanate, and the quality of ethanol is 3 times of the total mass of tetraethyl orthosilicate and tetrabutyl titanate; After tetraethyl orthosilicate and tetrabutyl titanate are hydrolyzed into a transparent sol, ruthenium acetate is added and stirred evenly to obtain material Ⅰ;

[0033] (2) Spray-dry material I at 150°C to form particles with a diameter of 50 μm, and roast at 600°C for 4 hours to obtain material II;

[0034](3) The material II is reduced with a sodium formate solution with a mass concentration of 5%, the reduction temperature is 50°C, and the reduction time is 2h. After the reduction, it is washed...

Embodiment 3

[0038] (1) tetraethyl orthosilicate, tetrabutyl titanate, water, mass concentration are 36% hydrochloric acid and n-propanol are mixed uniformly; Wherein, the quality of water is tetraethyl orthosilicate and tetrabutyl titanate 15% of the total mass, the mass of hydrochloric acid is 0.2% of the total mass of tetraethyl orthosilicate and tetrabutyl titanate, and the mass of n-propanol is 1.5% of the total mass of tetraethyl orthosilicate and tetrabutyl titanate. times; after tetraethyl orthosilicate and tetrabutyl titanate are hydrolyzed into a transparent sol, add ruthenium trinitronitrite and stir evenly to obtain material Ⅰ;

[0039] (2) Spray-dry material I at 130°C to form particles with a diameter of 30 μm, and roast at 500°C for 4 hours to obtain material II;

[0040] (3) The material II is reduced with a sodium formate solution with a mass concentration of 1%, the reduction temperature is 50°C, and the reduction time is 2h. After the reduction is completed, it is washed...

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Abstract

The invention discloses a catalyst for preparing 1,4-butanediol by aqueous phase hydrogenation of succinic acid and a preparation method thereof. The catalyst is made of noble metal Ru, SiO 2 , and TiO 2 Composition, based on the mass of the catalyst, the mass content of Ru is 10-30%, SiO 2 The mass content of TiO is 40-70%. 2 The mass content is 10-40%. The catalyst for producing 1,4-butanediol by aqueous phase hydrogenation of succinic acid in the present invention has relatively low price, high catalyst activity, conversion rate of succinic acid>96%, and selectivity of 1,4-butanediol> 90%; water is used as a solvent to realize the direct liquid-phase hydrogenation of succinic acid to prepare 1,4-butanediol under medium pressure conditions, and the process is simple and easy to operate.

Description

technical field [0001] The invention relates to a catalyst for preparing 1,4-butanediol through aqueous phase hydrogenation of succinic acid and a preparation method thereof, belonging to the technical field of catalyst preparation. Background technique [0002] 1,4-Butanediol is an important basic organic chemical and fine chemical raw material, widely used in solvents, medicines, cosmetics, plasticizers, curing agents, pesticides, herbicides, artificial leather, fibers, engineering plastics and other fields , which is also the basic raw material for the production of tetrahydrofuran (THF), γ-butyrolactone (GBL), N-methylpyrrolidone (NMP), polyurethane elastomers and other products. At present, 1,4-butanediol is produced by hydrogenation of maleic anhydride, which consumes a lot of energy and materials, causes serious pollution, and causes huge load and damage to energy and the environment. The use of biological fermentation to efficiently convert biomass into succinic aci...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/46C07C29/149C07C31/20
CPCB01J23/462C07C29/149C07C31/207
Inventor 王继元堵文斌杨爱武柏基业刘建新朱庆奋卞伯同
Owner SINOPEC YANGZI PETROCHEM