Hydrogenation catalyst, preparation method and application thereof

A hydrogenation catalyst and hydrogenation reaction technology, which are applied in catalyst activation/preparation, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of high catalytic cost, low hydrogenation catalyst activity, problems such as low selectivity, to achieve the effects of simple preparation conditions, low cost, and improved conversion rate

Active Publication Date: 2018-06-12
SHANGHAI XUNKAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The purpose of the present invention is to provide a hydrogenation catalyst and its preparation method and its application in the production of hexahydrophthalic anhydride with tetrahydrophthalic anhydride as raw material, to overcome the problems of low hydrogenation catalyst activity, low selectivity and high catalytic cost in the prior art defect

Method used

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  • Hydrogenation catalyst, preparation method and application thereof
  • Hydrogenation catalyst, preparation method and application thereof
  • Hydrogenation catalyst, preparation method and application thereof

Examples

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Embodiment 1

[0024] The present embodiment provides that the particle size is less than 100 meshes and consists of Ni 55 Cu 2 al 42.9 Mo 0.1 The process of preparing hydrogenation catalyst by lye activation treatment of metal alloy particles.

[0025] The preparation method of the hydrogenation catalyst in this embodiment specifically includes: adding 500 g of NaOH solution with a concentration of 25 wt % into a 1 L three-necked flask, the conductivity of the water used in the configuration of the NaOH solution is 10 μs / cm, and accurately weighing the particles The diameter is less than 100 mesh, and the composition is Ni 55 Cu 2 al 42.9 Mo 0.1 Add 100 g of metal alloy particles from the above-mentioned NaOH solution, control the reaction temperature to 150° C., stir at 400 r / min, and react for 2 hours to obtain activated metal alloy particles. Wash the activated metal alloy particles with deionized water at 30° C. Alloy particles, stop washing when the pH of the washing solution is...

Embodiment 2

[0027] The present embodiment provides that the particle size is less than 100 meshes and consists of Ni 43 Cu 3 al 53.5 Mo 0.5 The process of preparing hydrogenation catalyst by alkali solution activation treatment of metal alloy powder.

[0028] The hydrogenation catalyst was prepared according to the method described in Example 1, except that the concentration of NaOH solution was 35wt%, the conductivity of water was 200 μs / cm, the reaction time was 0.5h, and the reaction temperature was 60°C. ℃ deionized water to wash until the pH of the washing solution is 8, stop washing, and obtain a composition of Ni 90.2 Cu 4.3Al 4.6 Mo 0.9 hydrogenation catalyst.

Embodiment 3

[0030] The present embodiment provides that the particle size is less than 100 meshes and consists of Ni 40 Cu 4 Al 55 Mo 1 The process of preparing hydrogenation catalyst by alkali solution activation treatment of metal alloy powder.

[0031] The hydrogenation catalyst was prepared according to the method described in Example 1, except that the reaction temperature was 110°C, and the obtained composition was Ni 85.8 Cu 10 Al 3.0 Mo 1.2 hydrogenation catalyst.

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Abstract

The invention provides a hydrogenation catalyst. The hydrogenation catalyst is prepared from the following elements: 70-95wt% of Ni, 1-10wt% of Cu, 3-20wt% of Al and 0.1-6wt% of modified metal elementM, wherein the modified metal element M is selected from one or more of Ca, La, Mo, Ti, Fe and Co. Compared with the conventional raney-nickel catalyst, the hydrogenation catalyst prepared by adopting a preparation method has the beneficial effects that the conversion rate of tetrahydrophthalic anhydride and the selectivity of preparation of hexahydrophthalic anhydride are improved, the catalystpreparation condition is simple and convenient and the cost is low; in addition, the invention also provides a preparation method of the hydrogenation catalyst and application of the hydrogenation catalyst to production of the hexahydrophthalic anhydride by adopting the tetrahydrophthalic anhydride as a raw material.

Description

technical field [0001] The invention relates to the field of catalyst preparation, in particular to a hydrogenation catalyst, a preparation method thereof and its application in the production of hexahydrophthalic anhydride by using tetrahydrophthalic anhydride as a raw material. Background technique [0002] The full name of hexahydrophthalic anhydride is hexahydrophthalic anhydride, molecular formula C 8 h 10 o 3 , relative molecular weight 154.17, relative density 1.18, easily soluble in benzene, acetone, tetrahydrofuran, etc. Hexahydrophthalic anhydride is an indispensable raw material for the production of high-grade polyester materials. Using hexahydrophthalic anhydride instead of aromatic polyacids to produce amino alkyd paints, amino polyester paints, polyester paints, powder coatings, etc. can significantly improve the freshness of paints. Reflection, gloss, reduce viscosity, increase solid content, especially can greatly improve the weather resistance of coating...

Claims

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Application Information

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IPC IPC(8): B01J23/78B01J23/83B01J23/885B01J37/00C07D307/89
CPCB01J23/78B01J23/83B01J23/885B01J37/00C07D307/89
Inventor 王林敏国海光孙海霞刘洋洋王素素黄雍孙兵
Owner SHANGHAI XUNKAI NEW MATERIAL TECH
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