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

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

Examples

Experimental program
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Effect test

Example Embodiment

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

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

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

[0023] (3) Activate the material II with a NaOH solution with a concentration of 1-25% at an activation temperature of 50-100°C. After activation for 2 hours, wash it to neutrality to obtain the material III;

[0024] (4) The material III is immersed in an aqueous solution containing precious metal precursors, immersed for 1 hour and then washed to neutrality to obtain the catalyst of the present invention.

[0025] In the preparation method of the supplementary purification catalyst, the silicon source in step (1) is any one or a combination of nano-silica, silica sol,...

Example Embodiment

[0034] Example 1

[0035] Preparation of catalyst:

[0036] (1) Ni-Al alloy powder with a particle diameter ranging from 10 to 200 μm, binder hydroxypropyl methyl cellulose, and nano silica are mixed uniformly to obtain material I;

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

[0038] (3) Use 1% NaOH solution to activate material II at an activation temperature of 50°C, and wash to neutrality after activation for 2 hours to obtain material III;

[0039] (4) The material III is immersed in an aqueous solution containing palladium chloride, immersed for 1 hour and then washed to neutrality to obtain the catalyst of this embodiment.

[0040] Evaluation of the catalyst:

[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 220 nm, 275 nm, and 350 nm were ...

Example Embodiment

[0043] Example 2

[0044] Preparation of catalyst:

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

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

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

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

[0049] Evaluation of the catalyst:

[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 220 nm, 275 nm, and 350 nm were 0...

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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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