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Catalyst for fatty alcohol amination to prepare amine and preparation method thereof

A technology of fatty alcohol amines and catalysts, which is applied in the direction of catalyst activation/preparation, preparation of organic compounds, physical/chemical process catalysts, etc., and can solve problems such as difficult to meet industrial production, catalyst selectivity and low conversion rate

Active Publication Date: 2018-04-13
SHANDONG YUHUANG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the selectivity and conversion rate of existing catalysts for the reductive amination of fatty alcohols are low, and it is difficult to meet the needs of industrial production

Method used

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  • Catalyst for fatty alcohol amination to prepare amine and preparation method thereof
  • Catalyst for fatty alcohol amination to prepare amine and preparation method thereof
  • Catalyst for fatty alcohol amination to prepare amine and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0020] The preparation method of this catalyst comprises:

[0021] Step S1: treating the carrier with steam, drying it, and performing the first roasting.

[0022] Further, the method of using steam to treat the carrier includes: placing the carrier in a reaction vessel, controlling the reaction vessel at 100-900°C (preferably 500-800°C) and 0.1-3MPa (preferably 0.1-1MPa), and placing the The mixed gas of water vapor and nitrogen is passed into the reaction vessel and treated for 10-24 hours. Further, the water vapor content in the mixed gas is 10-100%, or 20-80%, or 30-60%, or 40-50%.

[0023] Using the method of treating the carrier with the above water vapor, different processing temperatures and processing times were selected, taking silicon-aluminum oxide as an example, the surface properties of the carrier under different processing conditions were analyzed, as shown in Table 1:

[0024] Table 1. Surface properties of carriers under different treatment conditions

[0...

Embodiment 1

[0043] This embodiment provides a catalyst for the amination of fatty alcohols to produce amines, which is: 10% Ni-10% Co-2.5% Re-0.5% Ru-1.5% B;

[0044] The preparation method of above-mentioned catalyst is:

[0045] Put the silicon-aluminum oxide carrier in the reaction vessel, control the reaction vessel at 650°C and 0.5 MPa, pass the mixed gas of water vapor and nitrogen (the content of water vapor is 45%) into the reaction vessel, and process After drying for 18 hours, it was calcined at 550°C for 4 hours to obtain the treated silica-alumina carrier.

[0046] Weigh 5g of the silicon-alumina carrier after the above treatment, dissolve 2.47g nickel nitrate hexahydrate, 2.47g cobalt nitrate hexahydrate, 3.0ml ethylenediamine and 0.18g ammonium perrhenate, 0.05g ruthenium chloride, 0.43g boric acid in Dissolve in 10ml of water at 50°C to obtain an impregnating liquid; add half of the impregnating liquid evenly to the silica-alumina carrier, dry at room temperature, dry in a...

Embodiment 2

[0048] This embodiment provides a catalyst for the amination of fatty alcohols to produce amines, which is: 10% Ni-15% Cu-2.5% Pt-1.5% K;

[0049] The preparation method of above-mentioned catalyst is:

[0050] Put the silicon-aluminum oxide carrier in the reaction vessel, control the reaction vessel at 500°C and 0.1 MPa, and pass the mixed gas of water vapor and nitrogen (the content of water vapor is 40%) into the reaction vessel, and treat After drying for 16 hours, bake at 400° C. for 5 hours to obtain the treated silica-alumina carrier.

[0051] Weigh 5g of the silicon-aluminum carrier after the above treatment, dissolve 2.47g of nickel nitrate hexahydrate, 2.9g of copper nitrate trihydrate, 3.6ml of ethylenediamine, 0.22g of platinum chloride, and 0.19g of potassium nitrate in 10ml of water. Dissolve at 90°C to obtain an impregnating liquid; add half of the impregnating liquid evenly to the silica-alumina carrier, dry at room temperature, dry in an oven at 80°C for 6 ho...

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Abstract

The invention provides a catalyst for fatty alcohol amination to prepare amine and a preparation method thereof and belongs to the field of chemical industry. The catalyst comprises a carrier, auxiliaries and active ingredients, the active ingredients include at least one of Ni, Co and Cu and account for 5-50wt% of total weight of the catalyst, and the auxiliaries include at least one of K, Na, Pd, Re, Ru, Cr and B and accounts for 1-10wt% of the total weight of the catalyst. The preparation method includes: adopting water vapor to treat the carrier, drying, and roasting for the first time; impregnating. The catalyst is high in stability, catalytic conversion rate and selectivity and can be used for preparing lower fatty amine.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a catalyst for producing amine by amination of fatty alcohol and a preparation method thereof. Background technique [0002] Organic amine refers to the amino group (-NH 2 , -NHR and -NR 2 ) A class of substances with characteristic functional groups, which belong to the derivatives of ammonia. Organic amines can be simply divided into aliphatic amines and aromatic amines. Fatty amines include low-level fatty amines and high-level fatty amines, and low-level fatty amines mainly refer to C1-C6 organic amine compounds. Amines are widely used and can be used in the production of medicines, pesticides, rubber, surfactants, crosslinking agents, and curing agents, and play an important role in the industry. [0003] Organic amines can be produced by a variety of methods, such as the preparation of haloalkanes by ammonolysis, the preparation of alcohol reductive amination and the re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/889B01J23/89C07C209/16C07C211/10B01J37/10B01J37/02
CPCB01J23/002B01J23/8896B01J23/8926B01J23/8946B01J23/8986B01J37/0203B01J37/0207B01J37/10B01J2523/00C07C209/16C07C211/10B01J2523/305B01J2523/31B01J2523/41B01J2523/74B01J2523/821B01J2523/845B01J2523/847B01J2523/13B01J2523/17B01J2523/828B01J2523/824
Inventor 杜宝磊李雪付志凯侯红霞王建伟王胜伟
Owner SHANDONG YUHUANG CHEM CO LTD
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