Phosphate-containing cross-linked polymer palladium-loaded nano-catalyst and preparation and application thereof

A technology of cross-linked polymers and palladium nanometers, which is applied in the direction of organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, nanotechnology, etc., can solve the problems of few preparation and catalytic applications, and achieve large-scale The effect of market application value and broad development space

Active Publication Date: 2018-02-23
DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

However, there are still few studies on the preparation and catalyti

Method used

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  • Phosphate-containing cross-linked polymer palladium-loaded nano-catalyst and preparation and application thereof
  • Phosphate-containing cross-linked polymer palladium-loaded nano-catalyst and preparation and application thereof
  • Phosphate-containing cross-linked polymer palladium-loaded nano-catalyst and preparation and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0030] Example 1 Preparation of phosphoric acid-containing crosslinked polymer supported nano-palladium catalyst

[0031] In a three-necked flask, add divinylbenzene (DVB) (2.0g, 15mmol), acrylic acid (AA) (0.360g, 5mmol), diphenyl p-styryl phosphine (DPPS) (1.4416g, 5mmol), even Nitrogen diisobutyronitrile (0.07g) and ethyl acetate (30ml), protected by nitrogen. The reaction was carried out at 100°C for 24 hours without stirring. After the reaction, the solvent was dried to obtain 2.5 g of white powder as a copolymer of divinylbenzene, acrylic acid and diphenyl p-styryl phosphine (PDVB-AA-DPPS).

[0032] Dip 200mg of the above white powder into ammonium tetrachloropalladate ((NH 4 ) 2 PdCl 4 ) (10mg) methanol solution (10mL), stirred vigorously for 16h, centrifuged, washed with methanol, put into the methanol solution (10mL) of sodium borohydride (20mg), stirred vigorously for 6h, centrifuged, washed with methanol to obtain phosphoric acid-containing crosslinks The polymer suppor...

Example

[0033] Examples 2-7

[0034] The method of Example 1 was used to prepare the phosphoric acid-containing cross-linked polymer supported nano-palladium catalyst. The difference was that the molar ratio of DVB to AA and DPPS and (NH) were changed during the synthesis of PDVB-AA-DPPS. 4 ) 2 PdCl 4 The dosage, see Table 1:

Example

[0035] Examples 8-11

[0036] The method of Example 1 was used to prepare the phosphoric acid-containing cross-linked polymer supported nano-palladium catalyst, except that the type of phosphine-containing monomer in the synthesized cross-linked polymer was changed, as shown in Table 2:

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Abstract

The invention discloses a phosphate-containing cross-linked polymer palladium-loaded nano particle catalyst, which is a compound obtained by reducing a phosphate-containing cross-linked polymer and asoluble palladium saline solution through sodium borohydride after carrying out coordination on the phosphate-containing cross-linked polymer and the soluble palladium saline solution, wherein the phosphate-containing cross-linked polymer is a cross-linked polymer of divinyl benzene, an acrylic monomer and a phosphorus monomer. The catalyst disclosed by the invention has the advantages that catalytic efficiency is high for a preparation reaction of hydrogen peroxide, selectivity is high, after the reaction is ended, the catalyst can be recycled by centrifugation or filtering separation; the phosphate-containing cross-linked polymer palladium-loaded nano particle catalyst is green and environmentally friendly and further accords with the sustainable development requirement.

Description

technical field [0001] The invention relates to the technical field of catalyst design, in particular to a phosphoric acid-containing crosslinked polymer-supported palladium nanoparticle catalyst and a preparation method thereof, and the application of the phosphoric acid-containing crosslinked polymer-supported palladium nanoparticle catalyst to catalyze the preparation of hydrogen peroxide. Background technique [0002] Hydrogen peroxide is an important chemical product, which is widely used in the fields of fine chemical synthesis, food, medicine, and metallurgy, and is an ideal green oxidant. So far, the vast majority of hydrogen peroxide in the industry is produced by the anthraquinone method, but the anthraquinone method is complicated in process, high in energy consumption, easy to explode in the production process, pollutes the environment, and is only suitable for large-scale production. Oxygen exists widely in the air and is cheap. The direct synthesis of hydrogen ...

Claims

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Application Information

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IPC IPC(8): B01J31/24B82Y30/00B82Y40/00C01B15/029
CPCB01J31/2495B01J2531/824B82Y30/00B82Y40/00C01B15/029Y02P20/584
Inventor 黄家辉王奂张少华史元元
Owner DALIAN INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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