Ru-Fe-Cu-La-Ti composite catalytic wet oxidation treatment method

A technology for catalytic wet oxidation and treatment methods, which is applied in the fields of oxidized water/sewage treatment, chemical instruments and methods, chemical elements of heterogeneous catalysts, etc., can solve problems such as poor selectivity, loss, catalyst deactivation, etc. High performance, excellent mechanical strength and wear resistance, simple and convenient preparation

Inactive Publication Date: 2017-08-29
FOSHAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, noble metal catalysts (Pt, Ru and Pd, etc.) are relatively expensive, but their catalytic activity and stability are much higher than those of transition metal oxides, especially in the oxidative degradation process of refractory organic compounds. Catalytic activity; transition metal oxides mainly include CuO, Co3O4 and NiO, etc. These catalysts are low in cost, but have poor selectivity, and the loss of active components under harsh CWAO reaction conditions can easily lead to catalyst deactivation; rare earth The metal itself has no catalytic performance, but because of its special physical and chemical properties, its addition can enhance the stability and activity of the catalyst, so rare earth metals are widely used in catalytic promoters

Method used

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  • Ru-Fe-Cu-La-Ti composite catalytic wet oxidation treatment method

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Effect test

Embodiment 1

[0042] A preparation method of a Ru-Fe-Cu-La-Ti composite catalytic wet oxidation catalyst, comprising the steps of:

[0043] 1) Pretreatment of the carrier

[0044] (1) 100 meshes of gac 100g are treated with aspartic acid 20g and beaten as carrier core;

[0045] (2) adding activated carbon after aspartic acid treatment in the gelling process of amorphous silica-alumina;

[0046] (3) The amino acid is decomposed and carbonized by roasting, and the amorphous silicon-alumina is promoted to tightly wrap the activated carbon.

[0047] 2) Preparation of impregnating liquid: the selected components are configured into 70 parts by weight of impregnating liquid; the Ru(OH) 3 , Fe 2 (SO 4 ) 3 、CuSO 4 , LaCl 3 ·6H 2 O, TiO 2 , Silica sol are respectively 2g, 4g, 3g, 5g, 3g, 8g dissolved in 45g distilled water according to the quality, then drop dilute nitric acid to make Ru(OH) 3 Dissolve completely and prepare impregnating solution;

[0048] 3) Impregnation: Put 30 parts by...

Embodiment 2

[0052] A preparation method of a Ru-Fe-Cu-La-Ti composite catalytic wet oxidation catalyst, comprising the steps of:

[0053] 1) Pretreatment of the carrier

[0054] (1) 100 meshes of gac 100g are treated with aspartic acid 22g and beaten, as the carrier core;

[0055] (2) adding activated carbon after aspartic acid treatment in the gelling process of amorphous silica-alumina;

[0056] (3) The amino acid is decomposed and carbonized by roasting, and the amorphous silicon-alumina is promoted to tightly wrap the activated carbon.

[0057] 2) Preparation of impregnating liquid: the selected components are configured into 70 parts by weight of impregnating liquid; the Ru(OH) 3 , Fe 2 (SO 4 ) 3 、CuSO 4 , LaCl 3 ·6H 2 O, TiO 2 , Silica sol are respectively 4g, 2g, 3g, 4g, 4g, 8g dissolved in 45g distilled water according to the quality, then drop dilute nitric acid to make Ru(OH) 3 Dissolve completely and prepare impregnating solution;

[0058] 3) Impregnation: Put 30 par...

Embodiment 3

[0062] A preparation method of a Ru-Fe-Cu-La-Ti composite catalytic wet oxidation catalyst, comprising the steps of:

[0063] 1) Pretreatment of the carrier

[0064] (1) 100 meshes of gac 100g are treated with aspartic acid 24g and beaten, as the carrier core;

[0065] (2) adding activated carbon after aspartic acid treatment in the gelling process of amorphous silica-alumina;

[0066] (3) The amino acid is decomposed and carbonized by roasting, and the amorphous silicon-alumina is promoted to tightly wrap the activated carbon.

[0067] 2) Preparation of impregnating liquid: the selected components are configured into 70 parts by weight of impregnating liquid; the Ru(OH) 3 , Fe 2 (SO 4 ) 3 、CuSO 4 , LaCl 3 ·6H 2 O, TiO 2 , Silica sol are respectively 3g, 3g, 5g, 4g, 3g, 7g dissolved in 45g distilled water according to the quality, then drop dilute nitric acid to make Ru(OH) 3 Dissolve completely and prepare impregnating solution;

[0068] 3) Impregnation: Put 30 par...

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Abstract

The invention discloses a Ru-Fe-Cu-La-Ti composite catalytic wet oxidation treatment method. A catalyst is characterized by comprising the following components in parts by weight: (a) 5 parts of Ru(OH)3; (b) 6 parts of Fe2(SO4)3; (c) 5 parts of CuSO4; (d) 12 parts of LaCl3.6H2O; (e) 5 parts of TiO2; (f) 30 parts of distilled water; (g) 5 parts of an adhesive; and (h) 30 parts of a pretreated activated carbon carrier. The pretreated activated carbon carrier is treated by aspartic acid so as to serve as a carrier core, and amorphous silica-alumina serves as a carrier shell. The prepared catalyst is excellent in mechanical strength and wear resistance and high in activity and stability. When landfill leachate is treated by the previous catalyst system, the CODCr removal rate can reach 95.4%, and the turbidity removal rate can reach 90.6%.

Description

technical field [0001] The present invention relates to a Ru-Fe-Cu-La-Ti composite catalytic wet oxidation treatment method, in particular to a catalyst for catalytic wet oxidation treatment of high-concentration refractory organic wastewater, a preparation method and a device for use thereof. The catalyst is A "noble metal-transition metal-rare earth" composite catalyst is used in the technical field of wastewater treatment. Background technique: [0002] The treatment methods of organic wastewater include physical method, chemical method, biological method, ozone or hydrogen peroxide oxidation, photochemical catalytic oxidation and membrane separation method. High-concentration refractory organic wastewater includes landfill leachate, papermaking black liquor, printing and dyeing wastewater, sulfur-containing wastewater, cyanide-containing wastewater, pharmaceutical wastewater, etc. One of the characteristics of this type of wastewater is the high concentration of pollutan...

Claims

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Application Information

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IPC IPC(8): B01J23/89C02F1/72C02F101/30C02F103/06
CPCB01J23/894B01J23/002B01J2523/00C02F1/725C02F2101/30C02F2103/06C02F2209/02C02F2301/06B01J2523/821B01J2523/842B01J2523/17B01J2523/3706B01J2523/47
Inventor 张永利
Owner FOSHAN UNIVERSITY
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