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A kind of preparation method of porous nitrogen-containing carbon-supported palladium catalytic material

A technology of palladium catalysis and nitrogen carbon, which is applied in the preparation of organic compounds, chemical instruments and methods, and the production of hydrocarbons from halogen-containing organic compounds. It can solve the problems of easy loss of active components and weak interaction, and achieve low equipment requirements. , large porosity, simple preparation process

Inactive Publication Date: 2018-10-23
浙江万鸿高分子材料有限公司
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  • Application Information

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Problems solved by technology

The disadvantage is that the interaction with the transition metal active components is weak, and the active components are easy to lose

Method used

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  • A kind of preparation method of porous nitrogen-containing carbon-supported palladium catalytic material
  • A kind of preparation method of porous nitrogen-containing carbon-supported palladium catalytic material

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preparation example Construction

[0028] like figure 2 Shown, the preparation method of porous nitrogen-containing carbon supported palladium catalytic material of the present invention comprises the following steps:

[0029] (1) Preparation of dilute chitosan solution: Take 2g of pharmaceutical grade chitosan powder (molecular weight: 100,000, degree of deacetylation: 95%), dissolve in 2% 100ml acetic acid solution to make a mixed solution, and keep stirring for 2 hours to form a homogeneous solution. Phase solution, let it stand for 2h for defoaming.

[0030] (2) Preparation of chitosan P123 mixed solution: Dissolve 0.2g P123 in 40ml 2% acetic acid solution to form a mixed solution and stir for 2 hours, then pour the dissolved P123 solution into 20ml 2% chitosan solution and stir for half hours, mix well.

[0031] (3) Preparation of chitosan / P123 / palladium mixed gel film: Weigh 0.3g palladium chloride, add 100ml distilled water, add 5g sodium chloride in a conical flask, heat and stir to completely dissol...

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Abstract

The invention relates to a preparation method of a porous nitrogen-charcoal containing supported palladium catalytic material for catalyzing an organic reaction. The preparation method comprises the following steps: directly dropwise adding transition metal palladium ions into a chitosan / polyethylene oxide-polypropylene oxide-polyethylene oxide triblock copolymer mixed solution to form strong complexing, so as to form a mixed gel solution; drying to form a blending gel film; under an inert gas atmosphere, adding the gel film into a tubular furnace and carrying out high-temperature carbonization to obtain the porous nitrogen-charcoal containing supported palladium catalytic material. The catalytic material prepared by the invention has abundant meso-porous structures; the specific surface area is greater than 100m<2> / g and the nitrogen content is 4 percent to 8 percent; the catalytic material has a good catalytic performance in application of an organic coupling reaction and can be repeatedly used for a plurality of times.

Description

technical field [0001] The invention relates to a method for preparing a porous nitrogen-containing carbon-supported palladium catalytic material used for organic reaction catalysis, and belongs to the technical field of chemical catalyst preparation technology. Background technique [0002] More and more attention has been paid to the use of some biopolymers that can form a strong complexation with transition metals as carriers to make supported catalysts for organic synthesis reactions. Chitosan, a derivative of chitin, is considered to be the most Promising supports for transition metal catalysts (E. Guibal, Prog. Polym. Sci. 2005, 30:71-109.). Its main advantage is that the transition metal active component has a strong complexing ability with a large number of amino groups and hydroxyl groups on the main chain of the chitosan macromolecule, and the prepared heterogeneous catalytic material has high catalytic activity. [0003] However, as a polymer carrier material, ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J27/24B01J35/10C07C67/343C07C69/618C07C1/26C07C15/14
CPCB01J27/24B01J35/10C07C1/26C07C67/343C07C2527/24C07C69/618C07C15/14
Inventor 刘奇王玉东曾敏峰齐陈泽
Owner 浙江万鸿高分子材料有限公司
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