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Catalyst for decomposing organic matters, preparation method and application of catalyst

A technology for catalyst and organic matter, applied in the field of catalyst for decomposing organic matter and its preparation, can solve the problems of shedding, heavy metal ion shedding, unprovided conversion efficiency, etc., and achieves the effects of low cost, high activity, and easy industrial production.

Active Publication Date: 2021-06-25
WANHUA CHEM GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the addition of Sb, there is a risk of heavy metal ions falling off the catalyst during synthesis, which may cause a small amount of Sb heavy metal ions to fall off while the catalyst is treating wastewater, which will also bring a lot of negative effects
[0005] She Houde and others used a photocatalyst loaded with palladium-zinc cadmium sulfur on a titanium dioxide carrier to convert carbon dioxide in the air into methane gas, but the actual conversion efficiency was not given.

Method used

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  • Catalyst for decomposing organic matters, preparation method and application of catalyst
  • Catalyst for decomposing organic matters, preparation method and application of catalyst
  • Catalyst for decomposing organic matters, preparation method and application of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1) Mix 0.2ml of rhodium-containing 500mg / L rhodium acetate solution (solvent is n-heptane), 2ml of cobalt-containing 1g / L cobalt acetate solution (solvent is n-heptane) and 5ml of polydimethylsiloxane 1g / L L polydimethylsiloxane solution (solvent is n-heptane) mixed evenly and heated to 70 ° C, using sodium hydroxide solution to adjust the pH value to 6;

[0063] 2) Add 3 g of TS-1 carrier to the solution obtained in step 1), and continue to react at 70° C. for 1 h; after the reaction is completed, the reactant is centrifuged, and the obtained solid is vacuum-dried in a water bath at 50° C. for 5 h. Catalyst I is obtained. Catalyst I composition is shown in Table 1 below.

Embodiment 2

[0065] 1) Mix 2ml of rhodium-containing 500mg / L rhodium acetate solution (solvent is n-heptane), 0.1ml of cobalt-containing 1g / L cobalt acetate solution (solvent is n-heptane) and 5ml of polydimethylsiloxane 1g / L L polydimethylsiloxane solution (solvent is n-heptane) mixed evenly and heated to 70 ° C, using sodium hydroxide solution to adjust the pH value to 7;

[0066] 2) Add 3 g of TS-1 carrier to the solution obtained in step 1), and continue to react at 70° C. for 1 h; centrifuge, and vacuum-dry the obtained solid in a water bath at 60° C. for 3 h to obtain Catalyst II. Catalyst II composition is shown in Table 1 below.

Embodiment 3

[0068] 1) Mix 2ml of rhodium-containing 500mg / L rhodium acetate solution (solvent is n-heptane), 2ml of cobalt-containing 1g / L cobalt acetate solution (solvent is n-heptane) and 0.2ml of polydimethylsiloxane 1g / L L polydimethylsiloxane solution (solvent is n-heptane) mixed evenly and heated to 70 ° C, using sodium hydroxide solution to adjust the pH value to 8;

[0069] 2) Add 3 g of TS-1 support to the solution obtained in step 1), and continue to react at this temperature for 1 h; centrifuge, and vacuum-dry the obtained solid in a water bath at 70°C for 4 h to obtain Catalyst III. The composition of Catalyst III is shown in Table 1.

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Abstract

The invention provides a catalyst for decomposing organic matters, a preparation method and application thereof. The catalyst comprises a carrier, and cobalt, rhodium and polydimethylsiloxane which are loaded on the carrier, wherein based on the total weight of the catalyst, the content of rhodium is 0.01-0.1 wt%, the content of cobalt is 0.01-0.1 wt%, the content of the polydimethylsiloxane is 0.1-1.0 wt%, the content of the carrier is 98.8-99.88 wt%, and the carrier is a commercially available conventional titanium silicon molecular sieve. The catalyst can be easily separated from wastewater, can be repeatedly used, has high activity, is used for removing organic matters in wastewater, especially nitrocresol in a TDI wastewater device, and can achieve the removal rate of total organic carbon TOC of the organic matters as high as 97%.

Description

technical field [0001] The invention relates to the technical field of catalyst preparation, in particular to a catalyst for decomposing organic matter and its preparation method and application. Background technique [0002] At present, the phenomenon of water pollution in our country is becoming more and more serious, and there are many deficiencies in the traditional water treatment technology, so people pay more attention to the development direction of sewage treatment. Photocatalytic nanotechnology proposed in recent years has been widely used in deep degradation of water treatment due to its outstanding redox ability. TiO 2 Semiconductors can completely oxidize a variety of refractory macromolecular organic compounds into small inorganic molecules, including polycyclic aromatic hydrocarbons, long-chain heterocyclic compounds, organic acids, dyes, papermaking wastewater, pesticides, etc. Amat AM et al. conducted solar photocatalytic degradation of two surfactants, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/38B01J31/06B01J33/00B01J29/89C02F1/30C02F101/34C02F101/38
CPCB01J31/38B01J31/06B01J33/00B01J29/89C02F1/30C02F2305/10C02F2101/345C02F2101/38B01J2229/18B01J2229/32B01J35/393B01J35/39B01J35/396
Inventor 高学顺张金强姜晓锋范珍龙张宏科
Owner WANHUA CHEM GRP CO LTD