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Supported catalytic filler and preparation method and application thereof

A catalytic packing and supported technology, which is applied in the field of supported catalytic packing and its preparation, can solve the problems of low catalytic efficiency, achieve excellent acid resistance, avoid abnormal operating conditions, and firmly bond

Active Publication Date: 2020-04-17
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a high-efficiency loaded catalytic packing and its preparation method and application in view of the problems and deficiencies such as low catalytic efficiency of existing bundled and sandwich-type catalytic packings.

Method used

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  • Supported catalytic filler and preparation method and application thereof
  • Supported catalytic filler and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of the supported catalytic filler includes the following steps:

[0024] 1) Dissolve the epoxy resin in the pore forming agent and add the crosslinking agent to form a viscous liquid. Take a certain amount of 3mm×3mm θ-ring filler and place it in the above solution to fully wet the surface of the filler carrier and take it out. After the carrier surface has no obvious liquid retention, it is placed in a drum for curing at a constant temperature of 60-130°C for 5-24 hours to obtain a filler carrier containing a cured adhesive layer; after curing, the filler carrier is extracted with ethanol or washed with water to remove holes in the adhesive layer. Agent to obtain a porous adhesive layer filler carrier;

[0025] 2) The porous layer filler carrier is placed in a coupling agent solution of 1 to 5 wt% for 12 to 24 hours, and then vacuum dried for 24 hours. The porous filler carrier is placed in the PSS-Na aqueous solution, so that PSS-Na is immersed in t...

Embodiment 1

[0032] Dissolve 1 part of epoxy resin E44 in 0.3 part of polyethylene glycol (molecular weight 400) and add 0.25 part of tetraethylenepentamine to form an adhesive. Put a certain amount of theta ring filler in the adhesive, immerse it twice to fully wet the surface of the filler carrier, and then take it out. After the filler carrier surface has no obvious liquid retention, place it in a drum for curing at 60°C for 10 hours to obtain a solidification The filler carrier of the adhesive layer; the cured filler carrier is subjected to ethanol extraction to remove the pore-forming agent in the adhesive layer to obtain a porous adhesive layer filler carrier.

[0033] Place the above porous layer filler carrier in a 1wt% coupling agent solution for 24 hours and then dry it, then place it in an aqueous solution of sodium polystyrene sulfonate for 12 hours, so that the sodium polystyrene sulfonate is immersed in the micropores of the adhesive layer After drying, use dilute sulfuric acid ...

Embodiment 2

[0035] Dissolve 1 part of epoxy resin E51 in 0.5 part of polyethylene glycol / N,N'-dimethylformamide mixed solution and add 0.5 part of 4,4'-diaminodicyclohexylmethane to form an adhesive. Put a certain amount of θ-ring filler in the glue, immerse it twice to fully wet the surface of the filler carrier, and then take it out. After the filler carrier surface has no obvious liquid retention, place it in a drum for curing at 100°C for 5 hours to obtain a solid The filler carrier of the adhesive layer; the cured filler carrier is subjected to ethanol extraction to remove the pore-forming agent in the adhesive layer to obtain a porous adhesive layer filler carrier.

[0036] Place the above porous layer filler carrier in a 3wt% coupling agent solution for 24 hours and then dry it, and then place it in an aqueous solution of sodium polystyrene sulfonate for 12 hours to immerse the sodium polystyrene sulfonate into the micropores of the adhesive layer After drying, use dilute sulfuric aci...

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Abstract

The invention discloses a supported catalytic filler and a preparation method and application thereof, belonging to supported catalytic fillers. The supported catalytic filler is provided with a filler carrier, a porous adhesive layer and a catalytic active component, and the catalytic active component fills in the pores of the porous adhesive layer or combined with the surface of the porous adhesive layer. The preparation method comprises the following steps: dissolving a porous structure medium in a pore-forming agent, adding a cross-linking agent to form an adhesive solution, dipping the filler carrier in the adhesive solution, taking out the filler carrier for curing to obtain a filler carrier containing a cured adhesive layer, removing the pore-forming agent in the adhesive layer, andcarrying out vacuum drying to obtain the filler carrier with a porous adhesive layer; and putting the filler carrier with the porous adhesive layer into a coupling agent solution, then putting the filler carrier with the porous adhesive layer into an aqueous PSS-Na solution, enabling PSS-Na to infiltrate into the micropores of the adhesive layer and to react with resin for combination, then putting the filler carrier into a dilute sulfuric acid solution for acidification, carrying out washing with water to remove residual acid, and carrying out vacuum drying to obtain the supported catalyticfiller. The prepared supported catalytic filler can be applied to a reaction separation process.

Description

Technical field [0001] The invention relates to a supported catalytic filler, in particular to a supported catalytic filler in a reaction separation device, and a preparation method and application thereof. Background technique [0002] Reactive distillation technology is a chemical process strengthening technology that couples catalytic reaction and separation in the same equipment, which can shorten the process flow and save equipment investment to a greater extent. Simultaneous reaction and separation in the process can overcome the equilibrium restriction of chemical reaction, improve the conversion rate of reactants and the selectivity of target products; if there are azeotropes in the reaction system, the reduction of reactants can overcome the separation of azeotropes as the reaction proceeds Limit, improve the purity of the rectification separation product. However, the catalytic packing is one of the important internal components in the reaction separation equipment, es...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D3/00B01J8/02B01D3/14
CPCB01D3/009B01D3/14B01J8/02
Inventor 沙勇周道伟张禹陈帅
Owner XIAMEN UNIV
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