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Efficient easy-to-separate catalytic wet oxidation catalyst as well as preparation method and application thereof

A catalytic wet oxidation, easy separation technology, applied in metal/metal oxide/metal hydroxide catalyst, organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, etc., can solve the problem of difficult preparation, The effect is not obvious, difficult and other problems, to achieve the effect of easy solid-liquid separation

Inactive Publication Date: 2022-01-18
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, most catalytic materials are difficult to develop, costly, difficult to prepare, and the effect is not obvious, which cannot fully meet the needs of pollutant treatment

Method used

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  • Efficient easy-to-separate catalytic wet oxidation catalyst as well as preparation method and application thereof
  • Efficient easy-to-separate catalytic wet oxidation catalyst as well as preparation method and application thereof
  • Efficient easy-to-separate catalytic wet oxidation catalyst as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A novel high-efficiency and easy-to-separate catalytic wet oxidation catalyst, prepared by the following method:

[0027] 1) Weigh potassium metaaluminate (KAlO 2 ), potassium silicate (K 2 SiO 3 ) and potassium hydroxide (KOH), were dissolved in pure water to obtain a mixed solution A. Potassium metaaluminate (KAIO 2 ) and potassium silicate (K 2 SiO 3 ) with a mass ratio of 1:0.55; potassium metaaluminate (KAlO 2 ) to potassium hydroxide (KOH) is 1:2.2; the mass ratio of potassium hydroxide (KOH) to pure water is 1:10.

[0028] 2) prepare chloroplatinic acid (H 2 PtCl 6 ), palladium dichloride (Pd(NH 3 ) 4 Cl 2 ), lead chloride (PbCl 2 ) and potassium hydroxide (KOH), dissolved in pure water to obtain a mixed solution B. Among them, chloroplatinic acid (H 2 PtCl 6 ) and dichlorotetraammine palladium (Pd(NH 3 ) 4 C1 2 ) in a mass ratio of 1:1.5; chloroplatinic acid (H 2 PtCl 6 ) to the mass ratio of lead chloride is 1:0.75; chloroplatinic acid (H 2...

Embodiment 2

[0041] A novel high-efficiency and easy-to-separate catalytic wet oxidation catalyst, prepared by the following method:

[0042] 1) Weigh potassium metaaluminate (KAlO 2 ), potassium silicate (K 2 SiO 3 ) and potassium hydroxide (KOH) were added to pure water to obtain a mixed solution A. Potassium metaaluminate (KAIO 2 ) and potassium silicate (K 2 SiO 3 ) with a mass ratio of 1:0.60; potassium metaaluminate (KAlO 2 ) to potassium hydroxide (KOH) is 1:2.25; the mass ratio of potassium hydroxide (KOH) to pure water is 1:9.

[0043] 2) Weigh chloroplatinic acid (H 2 PtCl 6 ), palladium dichloride (Pd(NH 3 ) 4 Cl 2 ), lead chloride (PbCl 2 ) and potassium hydroxide (KOH) were added to pure water to obtain mixed solution B. Among them, chloroplatinic acid (H 2 PtCl6) and tetraammine palladium dichloride (Pd(NH 3 ) 4 Cl 2 ) with a mass ratio of 1:1.65; chloroplatinic acid (H 2 The mass ratio of PtCl6) and plumbous chloride is 1: 0.80; Chloroplatinic acid (H 2 Pt...

Embodiment 3

[0056] A novel high-efficiency and easy-to-separate catalytic wet oxidation catalyst, prepared by the following method:

[0057] 1) Weigh potassium metaaluminate (KAlO 2 ), potassium silicate (K 2 SiO 3 ) and potassium hydroxide (KOH) were added into pure water to obtain mixed solution A. Potassium metaaluminate (KAIO 2 ) and potassium silicate (K 2 SiO 3 ) with a mass ratio of 1:0.65; potassium metaaluminate (KAlO 2 ) to potassium hydroxide (KOH) is 1:2.3; the mass ratio of potassium hydroxide (KOH) to pure water is 1:8.5.

[0058] 2) Weigh chloroplatinic acid (H 2 PtCl6), palladium dichlorotetraammine (Pd(NH 3 ) 4 Cl 2 ), lead chloride (PbCl 2 ) and potassium hydroxide (KOH) were added to pure water to obtain a mixed solution B. Among them, chloroplatinic acid (H 2 PtCl 6 ) and dichlorotetraammine palladium (Pd(NH 3 ) 4 Cl 2 ) with a mass ratio of 1:1.70; chloroplatinic acid (H 2 PtCl 6 ) to lead chloride mass ratio of 1:0.85; chloroplatinic acid (H 2 PtC...

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Abstract

The invention discloses an efficient easy-to-separate catalytic wet oxidation catalytic material and a preparation method and application thereof. The efficient easy-to-separate catalytic material can be applied to catalytic wet oxidation treatment of high-concentration organic wastewater. Under the catalytic wet oxidation conditions that a reaction temperature is 190 DEG C, reaction time is 2.5 h, an oxygen partial pressure is 150 kPa and a catalyst adding amount is 1.58 g / L, organic wastewater with an initial COD concentration of 105370 mg / L, a BOD concentration of 24068 mg / L and a TOC concentration of 98795 mg / L is treated, wherein COD removal efficiency can reach 92%, a BOD removal rate can reach 94%, and a TOC removal rate can reach 90%. The density of the catalyst material is 450 kg / m<3>, the catalyst material is subjected to standing treatment after the reaction is completed, and the catalyst material is easy for solid-liquid separation and can be widely applied to the field of high-concentration toxic and harmful wastewater treatment.

Description

technical field [0001] The invention belongs to the technical field of catalytic materials, and in particular relates to a novel high-efficiency and easy-separation catalytic wet oxidation catalyst as well as its preparation method and application. Background technique [0002] Wet oxidation refers to the oxidation of organic substances in water to small molecular organic or inorganic substances using gaseous oxygen (usually air) as an oxidant under high temperature and high pressure conditions. Wet oxidation technology is widely used in environmental fields such as industrial refractory organic wastewater treatment and sludge disposal. Catalytic wet oxidation is developed on the basis of wet oxidation. The catalytic wet oxidation method uses an efficient and stable catalyst in the process of the wet oxidation reaction, thereby changing the reaction process and reducing the activation energy required for the oxidation reaction, thereby reducing the temperature and pressure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J31/18B01J23/44B01J31/26B01J35/02C02F1/72C02F1/74C02F101/30B01J35/00
CPCB01J31/18B01J23/44B01J31/26C02F1/727C02F1/74C02F1/725C02F2101/30C02F2209/08C02F2209/20B01J35/31B01J35/00B01J35/30
Inventor 陈晨王磊吴殿一周枝怡张小琴许琦周润田园
Owner JIANGSU UNIV OF SCI & TECH