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Iron carbon and bentonite sodium alginate gel catalyst and preparation method and application thereof

A technology of gel catalyst and sodium alginate, which is applied in the direction of chemical instruments and methods, physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, etc., which can solve the problem of white spots, high proportion of tetrahydrofuran generation, and the impact of Problems such as the appearance of shoe uppers, to achieve the effects of cost reduction, high efficiency, and small release

Inactive Publication Date: 2017-05-17
HUAQIAO UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The technical scheme disclosed in CN 101338023A adopts PTA, IPA, 1,4-butanediol and polyethylene glycol to prepare a modified low-melting copolyester with a melting point of 110-160°C. The product has good crystallization performance, high intrinsic viscosity and is not easy to The advantages of adhesion, but the low-temperature thermal fuse with high crystallinity is easy to cause white spots after heat setting for 3D fly-knit uppers, which affects the appearance of the uppers
In addition, the esterification reaction in the technical solution of the Japanese patent publication No. 10-298271 is carried out under pressure, so that the generation ratio of tetrahydrofuran during the esterification process is relatively high, which seriously affects product performance and production stability.

Method used

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  • Iron carbon and bentonite sodium alginate gel catalyst and preparation method and application thereof
  • Iron carbon and bentonite sodium alginate gel catalyst and preparation method and application thereof
  • Iron carbon and bentonite sodium alginate gel catalyst and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] (1) Dissolve 2-4g of bentonite in deionized water (100mL of deionized water), then add 0.2-1g of activated carbon powder, and finally add 2-5g of sodium alginate and stir until dissolved;

[0033] (2) Place the material obtained in step (1) under mechanical stirring for 6-10 hours;

[0034] (3) Add 2 to 10 g of iron powder to the material obtained in step (2), and then stir for 5 to 30 minutes;

[0035] (4) preparation concentration is the calcium chloride solution of 4~8wt%;

[0036] (5) Pour the material of step (3) gained in the funnel, then the calcium chloride solution of step (4) is placed on the magnetic stirrer, then let the material of step (3) gained in the above-mentioned calcium chloride solution Gel into gel balls and soak for 0.5-2 hours;

[0037] (6) Wash the gel beads obtained in step (5) with deionized water, seal them in water or store them in vacuum for later use, and obtain the following: figure 1 and figure 2 The iron-carbon-bentonite sodium al...

Embodiment 2

[0039] Preparation of iron-carbon-bentonite sodium alginate gel catalyst (beads, MABs):

[0040] (1) Dissolve 2g of bentonite in deionized water (100mL of deionized water), then add 0.2g of activated carbon powder, and finally add 2g of sodium alginate and stir until dissolved;

[0041] (2) Place the material obtained in step (1) under mechanical stirring for 6-10 hours;

[0042] (3) Add 2 g of iron powder to the material obtained in step (2), then stir for 5 to 30 minutes;

[0043] (4) preparation concentration is the calcium chloride solution of 4wt%;

[0044] (5) Pour the material of step (3) gained in the funnel, then the calcium chloride solution of step (4) is placed on the magnetic stirrer, then let the material of step (3) gained in the above-mentioned calcium chloride solution Gel into gel balls and soak for 0.5-2 hours;

[0045] (6) Wash the gel beads obtained in step (5) with deionized water, and then set aside.

[0046] Add 100mL of reactive black 5 (RBK5) solu...

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Abstract

The invention discloses an iron carbon and bentonite sodium alginate gel catalyst and a preparation method and application thereof. The catalyst is made by crosslinking bentonite, active carbon, sodium alginate, deionized water and iron powder through calcium chloride, wherein bentonite and sodium alginate are taken as an embedding medium and calcium chloride is taken as a cross-linking agent. The catalyst together with persulfate is put in wastewater containing organic pollutants. The catalyst contacts persulfate to generate a large amount of sulfate free radicals with strong oxidability, so that the organic pollutants are oxidized and degraded.

Description

technical field [0001] The invention belongs to the technical field of catalysts for organic wastewater treatment, and in particular relates to an iron-carbon-bentonite sodium alginate gel catalyst and its preparation method and application. Background technique [0002] Low-melting fiber has no obvious melting point due to its poor crystallinity. More precisely, it is a low-temperature hot-melt fiber. As a new type of adhesive, it is widely used in the production of non-woven fabrics due to its convenient processing and low energy consumption. Compared with traditional chemical adhesives, it has the advantages of good adhesion and environmental protection. In recent years, the use of low-temperature hot-melt filaments as shoe upper adhesives has also been greatly developed in the weaving of 3D fly-woven shoe uppers. Said to achieve the environmental protection requirements. [0003] At present, there are two types of low-temperature thermal fuses used for 3D flying woven ...

Claims

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Application Information

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IPC IPC(8): B01J31/28C02F1/00C02F101/30
CPCB01J31/28C02F1/00C02F2101/30
Inventor 洪俊明王炳煌张倩
Owner HUAQIAO UNIVERSITY
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