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Supplementing refining catalyst for preparing 1,4-butanediol, preparation method and application thereof

A supplementary refining and catalyst technology, applied in chemical instruments and methods, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of difficult separation of colored impurities, 1,4-butanediol The problem of low purity

Active Publication Date: 2016-07-27
SINOPEC YANGZI PETROCHEM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Aiming at the disadvantages of low purity of 1,4-butanediol product and difficult separation of colored impurities in the process of preparing 1,4-butanediol by hydrogenation of dimethyl succinate in the prior art, the purpose of the present invention is to provide A supplementary refining catalyst for improving product quality of 1,4-butanediol and preparation method thereof

Method used

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  • Supplementing refining catalyst for preparing 1,4-butanediol, preparation method and application thereof
  • Supplementing refining catalyst for preparing 1,4-butanediol, preparation method and application thereof

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preparation example Construction

[0020] The preparation method of described supplementary refining catalyst comprises the following steps:

[0021] (1) Mix Ni-Al alloy powder with a particle diameter ranging from 10 to 200 μm, binder hydroxypropyl methylcellulose, and silicon source to obtain material I;

[0022] (2) Add deionized water to material I, knead and extrude into strips with a diameter of 2mm, dry and roast to obtain material II;

[0023] (3) Activate the material II with a NaOH solution with a concentration of 1-25%, the activation temperature is 50-100° C., and wash until neutral after activation for 2 hours to obtain the material III;

[0024] (4) The material III is soaked in an aqueous solution containing a noble metal precursor, soaked for 1 hour, and then washed until neutral to obtain the catalyst of the present invention.

[0025] In the preparation method of the supplementary refining catalyst, the silicon source in step (1) is any one of nano silicon dioxide, silica sol, tetraethyl orth...

Embodiment 1

[0035] Catalyst preparation:

[0036] (1) Mix Ni-Al alloy powder with a particle diameter ranging from 10 to 200 μm, binder hydroxypropyl methylcellulose, and nano-silicon dioxide to obtain material I;

[0037] (2) Add deionized water to material I, knead and extrude into strips with a diameter of 2 mm, dry at 100°C for 10 hours, and roast at 700°C for 2 hours to obtain material II;

[0038] (3) Activate the material II with a 1% NaOH solution at an activation temperature of 50° C., activate for 2 hours and then wash until neutral to obtain the material III;

[0039] (4) Immerse the material III in an aqueous solution containing palladium chloride for 1 hour and then wash until neutral to obtain the catalyst of this embodiment.

[0040] Catalyst evaluation:

[0041] The purity of the 1,4-butanediol raw material used in the catalyst evaluation process was 99.0%, and its ultraviolet transmittance (UV value) at 220nm, 275nm, and 350nm were 0.1%, 0.3%, and 34.0%, respectively. ...

Embodiment 2

[0044] Catalyst preparation:

[0045] (1) Mix Ni-Al alloy powder with a particle diameter ranging from 10 to 200 μm, binder hydroxypropyl methylcellulose, and silica sol to obtain material I;

[0046] (2) Add deionized water to material I, knead and extrude into strips with a diameter of 2 mm, dry at 100°C for 10 hours, and roast at 900°C for 2 hours to obtain material II;

[0047] (3) Activate the material II with a NaOH solution with a concentration of 25%, at an activation temperature of 100° C., and wash to neutrality after activation for 2 hours to obtain the material III;

[0048] (4) The material III was soaked in an aqueous solution containing palladium nitrate for 1 hour, and then washed until neutral to obtain the catalyst of this embodiment.

[0049] Catalyst evaluation:

[0050] The purity of the 1,4-butanediol raw material used in the catalyst evaluation process was 99.0%, and its ultraviolet transmittance (UV value) at 220nm, 275nm, and 350nm were 0.1%, 0.3%, a...

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Abstract

The invention discloses a supplementing refining catalyst for preparing 1,4-butanediol, a preparation method and application thereof. Compared with the prior art, the catalyst provided by the invention can be used for effectively removing colored impurities in 1,4-butanediol. Under the reaction condition according to the invention, the ultraviolet transmittance (UV value) of 1,4-butanediol under 220nm, 275nm and 350nm is increased to be more than or equal to 80%, 92% and 99% from 0.1%, 0.3% and 34.0%; the purity of the products can reach 99.8%; the polymer grade requirement is met; the reaction condition of the supplementing refining catalyst is mild; the pressure, temperature and hydrogen consumption are ultralow; the volume airspeed is ultrahigh; compared with rectifying purification, the supplementing refining catalyst is beneficial to the reduction of production cost.

Description

technical field [0001] The invention belongs to the technical field of hydrofining of biochemical products, and more specifically relates to a supplementary refining catalyst for improving the quality of 1,4-butanediol products and a preparation method thereof. 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. The current global market demand for 1,4-butanediol is 1.3 million tons per year. [0003] At present, the production of 1,4-butanediol and succinic acid is based on non-renewable petroleum raw materials. The production process consumes a lot of energy and materials...

Claims

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Application Information

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IPC IPC(8): B01J23/89C07C29/149C07C31/20
CPCB01J23/892C07C29/149C07C31/207
Inventor 堵文斌刘波沈品德王继元杨爱武柏基业刘建新
Owner SINOPEC YANGZI PETROCHEM
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