Preparation of polystyrene/polyaniline composite microsphere supported catalyst

A supported catalyst, polystyrene microsphere technology, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as unreported research, etc. Achieve the effect of improving catalytic efficiency, high catalytic activity, and no safety hazards

Inactive Publication Date: 2010-09-29
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the research on the catalytic performance of supported catalysts that has been reported, there is no report on the material with adjustable hydrophilicity and hydrophobicity as the carrier of the catalyst to support the metal active center.

Method used

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  • Preparation of polystyrene/polyaniline composite microsphere supported catalyst
  • Preparation of polystyrene/polyaniline composite microsphere supported catalyst
  • Preparation of polystyrene/polyaniline composite microsphere supported catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1) Preparation of polystyrene microspheres

[0025] First, take 6 moles of deionized water and pass nitrogen at 70°C for 20 minutes, measure 0.1 mole of styrene and add it to the aqueous solution, and continue to pass nitrogen at 70°C for 20 minutes, weigh potassium persulfate (K 2 S 2 o 8) 0.0006 mole and dissolve it in 0.4 mole deionized water to form a solution and add it to the above-mentioned mixed system, keep the system temperature at 70°C, mechanically stir (300rpm) and react with nitrogen gas for 24h, the solution gradually becomes milky white during the reaction, and The reacted solution was centrifuged (9800 rpm, 10 min), washed three times with deionized water and absolute ethanol, and dried in vacuum to obtain the product.

[0026] 2) Preparation of polystyrene / polyaniline composite microsphere carrier

[0027] First weigh 0.03 mol of polystyrene (PS) microspheres and dissolve them in 0.8 mol of deionized water to form a uniform emulsion. Use a syringe t...

Embodiment 2

[0036] 1) Preparation of polystyrene microspheres

[0037] First, take 10 moles of deionized water and pass nitrogen at 70°C for 20 minutes, measure 0.18 moles of styrene and add it to the aqueous solution, and continue to pass nitrogen at 70°C for 20 minutes, weigh potassium persulfate (K 2 S 2 o 8 ) 0.0009 mole and dissolve it in 0.8 mole deionized water to form a solution and add it to the above mixing system, keep the system temperature at 70 ° C, mechanically stir (300 rpm) and react with nitrogen gas for 24 hours, the solution gradually becomes milky white during the reaction, and the The reacted solution was centrifuged (9800 rpm, 10 min), washed three times with deionized water and absolute ethanol, and dried in vacuum to obtain the product.

[0038] 2) Preparation of polystyrene / polyaniline composite microsphere carrier

[0039] First weigh 0.08 mol of polystyrene (PS) microspheres and dissolve them in 1.2 mol of deionized water to form a uniform emulsion. Use a sy...

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PUM

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Abstract

The invention relates to a preparation of a polystyrene/polyaniline composite microsphere supported molybdenum catalyst, which belongs to the technical field of preparation of the macromolecule supported metal catalytic material. In the preparation, a polystyrene microsphere is used as a hard template and is added into deionized water with a dispersed aniline monomer, and an oxidant of water-soluble iron salt is added at a time, thereby obtaining a sea urchin-shaped polystyrene/polyaniline composite microsphere through assembly of one-dimensional polyaniline nanofibers. In the preparation of the supported catalyst, MoO(O2)2(DMF)2 is used as a catalyst-supporting active central precursor and is supported on a polystyrene/polyaniline microsphere substrate of a special nano-structure for synthesis of a supported solid catalytic material, wherein the synthesized supported catalyst is a super-hydrophilic supported catalyst. The supported catalyst can be doped with PFOS at the room temperature to prepare a super-hydrophobic supported catalyst, so that the polystyrene/polyaniline composite microsphere supported catalyst can be applied in various substrates and oxygen sources. Moreover, the polystyrene/polyaniline composite microsphere supported catalyst has high catalytic activity.

Description

technical field [0001] The invention belongs to the technical field of preparation of polymer-supported metal catalytic materials, and in particular relates to a method for preparing a conductive polystyrene / polyaniline composite microsphere-supported molybdenum-based catalyst with adjustable hydrophilicity and hydrophobicity. Background technique [0002] Wettability is an important characteristic of solid surfaces. It plays a very important role in people's daily life, industry and agricultural production, so the research on infiltration has attracted extensive attention. When the contact angle θ>150° between the solid surface and water is defined as superhydrophobic, and when the contact angle θ<5° is superhydrophilic. The superhydrophilic properties of solid materials are mainly determined by the chemical composition and micro-nano structure of the material surface. [0003] Molybdenum-based catalysts have the advantages of low toxicity, low price, and high catal...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/34B01J31/06C07D301/19C07D303/04
Inventor 王戈杨穆曹利静孙冬柏
Owner UNIV OF SCI & TECH BEIJING
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