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Amorphous catalyst containing cobalt and boron used in cinnamyl alcohol preparation by virtue of hydrogenation on cinnamic aldehyde and preparation method thereof

A technology of cinnamyl alcohol and cinnamaldehyde, which is applied in the direction of catalyst activation/preparation, chemical instruments and methods, preparation of hydroxyl compounds, etc., and can solve the problems of being unsuitable for large-scale industrial production and expensive

Inactive Publication Date: 2010-06-02
FUDAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Catalysts based on noble metals (Pt, Ru, Pd) have been extensively studied in recent years, although their activity and selectivity are high, they are expensive and not suitable for large-scale industrial production

Method used

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  • Amorphous catalyst containing cobalt and boron used in cinnamyl alcohol preparation by virtue of hydrogenation on cinnamic aldehyde and preparation method thereof
  • Amorphous catalyst containing cobalt and boron used in cinnamyl alcohol preparation by virtue of hydrogenation on cinnamic aldehyde and preparation method thereof
  • Amorphous catalyst containing cobalt and boron used in cinnamyl alcohol preparation by virtue of hydrogenation on cinnamic aldehyde and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1: the preparation of ultrafine Co-B amorphous alloy catalyst

[0017] The prepared 2.00M potassium borohydride aqueous solution was dropped into cobalt chloride (CoCl 2 ·6H 2 O, 1.0M) in aqueous solution, the molar ratio is B / Co=4 / 1. The reaction solution was placed in a constant temperature water bath and subjected to vigorous electromagnetic stirring. The resulting black precipitate was centrifuged, washed with distilled water until neutral, and then washed with absolute ethanol before being used for activity testing. The catalyst was recorded as CoB. Partial characterization of the catalyst The results are shown in Table 1.

Embodiment 2

[0018] Example 2: Ultrafine CoFe III B and CoFe II Preparation of B amorphous alloy catalyst

[0019] The catalyst is prepared by chemical reduction method. Drop the prepared 2.00M potassium borohydride aqueous solution into cobalt chloride (CoCl 2 ·6H 2 O) and ferric chloride (FeCl 3 ·6H 2 O) or ferrous chloride (FeCl 2 4H 2 O) in a mixed aqueous solution in which cobalt chloride (CoCl 2 ·6H 2 O) and ferric chloride (FeCl 3 ·6H 2 O) or ferrous chloride (FeCl 2 4H 2 The total molar concentration of O) is 1.0M. Catalysts with different cobalt and iron contents can be obtained by changing the molar ratio of cobalt chloride and ferric chloride or ferrous chloride. The molar ratio during reduction is fixed at B / (Co+Fe)=4 / 1. The reaction solution was placed in a constant temperature water bath and subjected to vigorous electromagnetic stirring. The resulting black precipitate was separated by centrifugation, washed with distilled water until neutral, and then washed...

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Abstract

The invention belongs to the chemical technical field, in particular to an amorphous catalyst containing cobalt and boron used in cinnamyl alcohol preparation by virtue of hydrogenation on cinnamic aldehyde and a preparation method thereof. The catalyst is composed of cobalt, boron and metal or metallic oxide modifier Fe. Cobalt is mainly existed in Co-B or Co-Fe-B amorphous alloy form, and the amorphous alloy contains 1 part of cobalt, 0.08-0.20 part of boron and 0-1.15 parts of Fe by weight proportion. The catalyst is made by the steps that Co2+ ion and oxidized Fe are reduced by BH4- ion and foreign ion is removed. Being applied to reaction for preparing cinnamyl alcohol by selective hydrogenation on cinnamic aldehyde, the catalyst has the advantages of simple operation and higher cinnamic aldehyde hydrogenation selectivity.

Description

technical field [0001] The invention belongs to the technical field of chemical industry, and in particular relates to a novel amorphous catalyst used for the selective hydrogenation of cinnamaldehyde to produce cinnamyl alcohol and a preparation method thereof. Background technique [0002] α, β-unsaturated aldehydes are selectively hydrogenated to α, β-unsaturated alcohols, which are important raw materials and intermediates in the production of fragrances, pharmaceuticals and other fine chemical products, and are also widely used in organic synthesis. Cinnamyl alcohol is a representative compound among α, β-unsaturated alcohols. It is an important pharmaceutical raw material, often used in the synthesis of cardiovascular and cerebrovascular drugs, such as brain yazine, etc., which can effectively inhibit lung tumors caused by viruses; it is clinically used in blood cancer, uterine cancer, ovarian tumor, esophageal cancer, etc. tumor. At the same time, cinnamyl alcohol i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J23/745B01J21/02B01J37/16C07C33/32C07C29/141
Inventor 裴燕乔明华范康年
Owner FUDAN UNIV
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