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Catalyst for preparing 1, 6-hexanediol by hydrogenating dimethyl adipate, and preparation method and application thereof

The technology of dimethyl adipate and catalyst is applied in the field of catalyst for preparing 1,6-hexanediol by hydrogenation of dimethyl adipate and the field of preparation thereof, and can solve the problem of low processing capacity of dimethyl adipate, low processing capacity of dimethyl adipate, low processing capacity of dimethyl adipate. Reduce production and operating costs, short service life and other issues, to achieve the effect of improving unit processing capacity, prolonging residence time, and reducing ventilation volume

Active Publication Date: 2020-09-15
TANGSHAN ZHONGRONG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above deficiencies in the prior art, the present invention provides a catalyst for the preparation of 1,6-hexanediol by hydrogenation of dimethyl adipate and a preparation method thereof to solve the problem of preparing 1,6-hexanediol by hydrogenation of dimethyl adipate. The catalyst for 1,6-hexanediol has problems such as low performance, short service life and low unit processing capacity of dimethyl adipate, so as to further improve the hydrogenation of dimethyl adipate to prepare 1,6-hexanediol Economical, reducing production and operating costs, and more conducive to the large-scale promotion and application of this process route

Method used

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  • Catalyst for preparing 1, 6-hexanediol by hydrogenating dimethyl adipate, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The catalyst for preparing 1,6-hexanediol by hydrogenation of dimethyl adipate in this example is composed of a carrier and an active component dispersed and supported on the carrier; the active component is composed of the first active component and the second active component, the first active component is ruthenium, the second active component is copper chromite; the carrier is lanthanum-doped SiO 2 / ZrO 2 Carrier; the carrier is a mesoporous structure with a pore size of 10-50 nm.

[0030] The content of the active component is 29wt%, and the content of the carrier is 71wt%.

[0031] The mass ratio of the first active component to the second active component is 1:16.

[0032] The preparation method of present embodiment catalyst, it comprises the following steps:

[0033] S1 Carrier Preparation: Dissolve lanthanum nitrate, sodium silicate and zirconium nitrate in deionized water to prepare a mixed solution A; in an ice-water bath, slowly add the mixed solution A ...

Embodiment 2

[0039] The catalyst for preparing 1,6-hexanediol by hydrogenation of dimethyl adipate in this example is composed of a carrier and an active component dispersed and supported on the carrier; the active component is composed of the first active component and the second active component, the first active component is iridium, the second active component is copper chromite; the carrier is lanthanum-doped SiO 2 / ZrO 2 Carrier; the carrier is a mesoporous structure with a pore size of 10-50 nm.

[0040] The content of the active component is 35wt%, and the content of the carrier is 65wt%.

[0041] The mass ratio of the first active component to the second active component is 1:10.

[0042] The preparation method of present embodiment catalyst, it comprises the following steps:

[0043] S1 Carrier Preparation: Dissolve lanthanum nitrate, sodium silicate and zirconium nitrate in deionized water to prepare a mixed solution A; in an ice-water bath, slowly add the mixed solution A to...

Embodiment 3

[0049] The catalyst for preparing 1,6-hexanediol by hydrogenation of dimethyl adipate in this example is composed of a carrier and an active component dispersed and supported on the carrier; the active component is composed of the first active component and the second active component, the first active component is ruthenium, the second active component is copper chromite; the carrier is lanthanum-doped SiO 2 / ZrO 2 Carrier; the carrier is a mesoporous structure with a pore size of 10-50 nm.

[0050] The content of the active component is 20wt%, and the content of the carrier is 80wt%.

[0051] The mass ratio of the first active component to the second active component is 1:25.

[0052] The preparation method of present embodiment catalyst, it comprises the following steps:

[0053] S1 Carrier Preparation: Dissolve lanthanum nitrate, sodium silicate and zirconium nitrate in deionized water to prepare a mixed solution A; in an ice-water bath, slowly add the mixed solution A ...

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Abstract

The invention discloses a catalyst for preparing 1, 6-hexanediol through hydrogenating dimethyl adipate. The catalyst is composed of a carrier and an active component dispersedly loaded on the carrier, wherein the active component is composed of a first active component and a second active component, the first active component is ruthenium and / or iridium, and the second active component is copperchromite; the carrier is a lanthanum doped SiO2 / ZrO2 carrier; and the carrier is of a mesoporous structure, and the pore size of the carrier is 10-50 nm. The catalyst provided by the invention not only has the advantages of high dimethyl adipate conversion rate and strong 1, 6-hexanediol selectivity, but also has the excellent performances of large specific surface area, high active component loading capacity, stable performance and long service life. The invention further discloses a preparation method and application of the catalyst for preparing 1, 6-hexanediol through hydrogenating dimethyl adipate.

Description

technical field [0001] The invention relates to the technical field of hydrogenation catalysts, in particular to a catalyst for hydrogenating dimethyl adipate to prepare 1,6-hexanediol, a preparation method and application thereof. Background technique [0002] 1,6-Hexanediol is a newly emerging important fine chemical raw material. Its products have excellent high-end special application properties such as environmental protection, thermal processing, and weather resistance. It is an environmentally friendly chemical raw material that does not pollute the environment. It is known as "New cornerstones in organic synthesis". It is widely used in high-end environmental protection coatings, biodegradable polyester, high-grade synthetic fibers, and high-end mechanical products such as automotive components. [0003] CN201310512632.1 discloses a four-component catalyst with active components Ru, Re, In and Ir for the catalytic synthesis of 1,6-hexanediol. The composition of the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/10B01J23/89B01J35/10B01J37/02C07C29/149C07C31/20
CPCB01J23/894B01J23/10B01J37/0203C07C29/149B01J35/635B01J35/647C07C31/20Y02P20/52
Inventor 代淑梅吴超勇李秋园
Owner TANGSHAN ZHONGRONG TECH CO LTD
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