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Supported catalyst for preparing morpholine, and preparation method thereof

A supported catalyst and morpholine technology, which is applied in the preparation of supported catalysts for morpholine and its preparation field, can solve the problems of poor catalyst stability, low product purity, and low morpholine yield, and achieve uniform dispersion and high product purity , good catalytic activity

Inactive Publication Date: 2021-11-09
四川鸿鹏新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This type of catalyst has better catalytic activity, but this type of supported catalyst usually immerses the carrier in the metal salt solution, so that the metal ions are loaded on the carrier, and the metal ion and the carrier are physically adsorbed, and the adsorption force is poor. The stability of the catalyst is poor
And, in the process that diethylene glycol method prepares morpholine, easily produce by-product, cause the yield of morpholine to be low, the purity of product is low

Method used

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  • Supported catalyst for preparing morpholine, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of catalyst and agent:

[0027] S1 Ball mill alumina, aluminum-based chelating resin, cross-linking agent, monomer and water to form a slurry, add polyurethane foam particles and catalyst to the slurry, stir evenly, pour it into a mold to solidify; then set it at a certain temperature Sintering to obtain the base material;

[0028] S2: dissolving the organic ligands in a solvent to obtain an organic ligand solution, immersing the substrate obtained in the above step S1 into the organic ligand solution, and soaking at a certain temperature for 24-72 hours to obtain the porous carrier;

[0029] S3: preparing a nitric acid solution containing active components, soaking the porous carrier prepared in step S2 into the solution, and drying to obtain the catalyst.

[0030] Catalysts No. 1-10 were prepared according to the above-mentioned preparation method and the ratio of raw materials in Table 1.

[0031] Table 1 embodiment 1-10 catalyst raw material ratio

[...

experiment example

[0044] In the reactants prepared in Examples 1-10 and Comparative Examples 1-3, the purity and yield of morpholine were measured, and the results are shown in Table 2.

[0045] The catalytic performance of the catalyst of table 2 embodiment 1-10 and comparative example 1-3

[0046] Example 1 Example 2 Example 3 Example 4 Example 5 Diethylene glycol conversion rate (%) 99.1 98.4 97.8 96.3 97.9 Morpholine yield (%) 90.2 90.5 89.5 88.4 90.2 Example 6 Example 7 Example 8 Example 9 Example 10 Diethylene glycol conversion rate (%) 99.4 98.3 98.1 98.5 99.1 Morpholine yield (%) 93.4 93.8 94.5 94.3 98.7 Comparative example 1 Comparative example 2 Comparative example 3 / / Diethylene glycol conversion rate (%) 80.2 82.4 83.4 / / Morpholine yield (%) 88.1 87.2 86.3 / /

[0047] As can be seen from Table 3, the catalyzer of the embodiment of the present invention 1-10 is applied t...

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Abstract

The invention relates to the technical field of fine chemical engineering, and concretely relates to a supported catalyst for preparing morpholine, and a preparation method thereof. The supported catalyst comprises a porous carrier and an active component supported on the porous carrier; the porous carrier comprises aluminum oxide, aluminum-based chelate resin and a metal framework material; and the mass fraction of the porous carrier is 40-60%, and the mass fraction of the active component is 40-60%. According to the supported catalyst, the bonding strength of the active components and the carrier is high, the temperature property is good, the active components are dispersed more uniformly, the catalytic activity of the catalyst is good, and the purity of the obtained product is high.

Description

technical field [0001] The invention relates to the technical field of fine chemicals, in particular to a supported catalyst for preparing morpholine and a preparation method thereof. Background technique [0002] Morpholine is an important fine chemical intermediate, which is widely used in medicine, rubber, textile and other industries. The main method of producing morpholine at present is diethylene glycol catalytic amination method. Under the action of catalyst, diethylene glycol reacts with ammonia to prepare morpholine. In this preparation method, the main factor affecting the yield of morpholine is the catalyst. [0003] At present, most of the catalysts used in the preparation of morpholine by the diethylene glycol method are supported catalysts, that is, alumina is used as a carrier, and active components such as Cu, Ni, Fe, and Zn are loaded. This type of catalyst has better catalytic activity, but this type of supported catalyst usually immerses the carrier in th...

Claims

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Application Information

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IPC IPC(8): B01J31/28B01J35/10C07D295/023C07D295/027
CPCB01J31/28C07D295/023C07D295/027B01J35/61
Inventor 袁波黄凤翔杨俊陈中华董彪
Owner 四川鸿鹏新材料有限公司
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