Hydroxyquinoline filler as well as preparation method and application thereof

The technology of hydroxyquinoline and dihydroxyquinoline is applied in the field of hydroxyquinoline filler and its preparation, which can solve the problems of high aluminum metal residue, complicated process, slow catalyst removal speed and the like, and achieves fast removal speed and simple process. , remove the effect of high depth

Pending Publication Date: 2022-05-27
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the commonly used demetallization methods in industrial production include precipitation method, ion exchange method, solvent extraction method, electrodialysis method, etc., all of which have disadvantages such as cumbersome process, slow catalyst removal speed, and high residual metals such as aluminum.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Preparation and application of 8-hydroxyquinoline-supported alumina:

[0051] Add 10g of 8-hydroxyquinoline, 100g of alumina, 2g of propionic acid, and 4000g of methanol into a 10L airtight container, stir evenly, soak at 20°C for 10 hours, then put the sample into a vacuum oven at 80°C, and dry it for 24h to constant temperature. weight, 110 grams of deliming filler-1 was obtained, the content of 8-hydroxyquinoline was 9.1wt% after testing, and the specific surface area was 250m 2 / g, the pore volume is 0.92m 3 / g, the hole distance is 5nm.

[0052] Take 100g of chelating adsorption filler-1 and fill it into the adsorption column (the adsorption column used in the embodiment and the comparative example is 200ml in volume, and the aspect ratio is 2), the adsorption column is heated to 90 ℃, and then the pre-synthesized 100g The COC polymerization reaction solution was passed into the adsorption column and stayed for 5min. After the polymerization solution in the adsor...

Embodiment 2

[0054] Preparation and application of 8-hydroxyquinoline supported silica:

[0055] Add 10g of 8-hydroxyquinoline, 2000g of silica, 5g of formic acid, and 10000g of methanol into a 20L airtight container and stir evenly, soak at 50°C for 24 hours, then put the sample into a vacuum oven at 60°C, and dry it for 24h to constant temperature. Weight, 2010 grams of deliming filler-2 were obtained, the content of 8-hydroxyquinoline was 0.5wt% after testing, and the specific surface area was 208m 2 / g, the pore volume is 0.48m 3 / g, the hole distance is 7nm.

[0056] Take 100g of chelating adsorption filler-2 and fill it into the adsorption column, heat the adsorption column to 90°C, and then pass 100g of the pre-synthesized LLDPE polymerization reaction solution into the adsorption column, stay for 5min, and after the polymerization liquid in the adsorption column is discharged A large amount of ethanol was injected into the precipitate to obtain a white solid, which was LLDPE samp...

Embodiment 3

[0058] Preparation and application of 6-hydroxyquinoline-supported alumina:

[0059] Add 10g of 6-hydroxyquinoline, 100g of alumina, 1g of acetic acid, and 6000g of chloroform into a 20L airtight container, stir evenly, soak at 40°C for 15 hours, then put the sample into a vacuum oven at 100°C, and dry it for 24h to constant weight , 110 grams of deliming filler-3 were obtained, the content of 6-hydroxyquinoline was 9.1wt% after testing, and the specific surface area was 243m 2 / g, the hole volume is 0.55m 3 / g, the hole distance is 5nm.

[0060] Take 100g of chelating adsorption filler-3 and fill it into the adsorption column, heat the adsorption column to 90°C, and then pass 100g of the pre-synthesized SBR polymerization reaction solution into the adsorption column, stay for 5min, and after the polymerization liquid in the adsorption column is discharged A large amount of ethanol was injected into the precipitate to obtain a white solid, which was SBR sample-1. The SBR sam...

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Abstract

The invention provides a chelating adsorption filler as well as a preparation method and application thereof. The filler is molecular sieve filler loaded with a hydroxyquinoline compound, and organic acid can be loaded on the molecular sieve loaded with the hydroxyquinoline compound. The filler can be used for effectively removing a residual catalyst in a polyolefin solution, has the advantages of high ash removal speed, large adsorption capacity and small pressure drop, and is suitable for removing the catalyst in a plurality of olefin solution polymerization processes.

Description

technical field [0001] The invention belongs to the field of polyolefin purification, and in particular relates to a hydroxyquinoline filler and a preparation method and application thereof. Background technique [0002] Polyolefin is a kind of resin material obtained by the use of metal catalysts to initiate the homopolymerization or copolymerization of small molecular olefins such as ethylene, propylene, α-olefin, and cycloolefin. , building materials and other fields, is the largest output of polymer materials. However, the residual catalyst metal (especially aluminum element) in the polyolefin will reduce the photoelectric properties of the material, and the residual metal will lead to discoloration and degradation of the material, and there is a risk of precipitation during the use of medical and food packaging materials. Applications of polyolefins in high value-added fields such as optics, communications, medical care, and food. [0003] Removing the residual metal ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/22B01J20/30B01D15/08
CPCB01J20/22B01J20/08B01D15/08Y02W10/10
Inventor 黄明路郭华高原石正喜王磊
Owner WANHUA CHEM GRP CO LTD
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