Supported ferroferric oxide catalyst used in supercritical water oxidation to remove dichlorobiphenyl

A technology of supercritical water oxidation and ferroferric oxide, applied in the direction of metal/metal oxide/metal hydroxide catalyst, physical/chemical process catalyst, oxidized water/sewage treatment, etc., can solve the problem of low catalytic activity and stable catalyst Problems such as poor performance and lack of

Inactive Publication Date: 2017-01-04
北京清水润土环保科技有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst commonly used in catalytic supercritical water oxidation technology is MnO 2 , CuO, TiO 2 , CeO 2 、Al 2 o 3 , Pt or a composite catalyst composed of several of them such as Cr 2 o 3 /Al 2 o 3 , CuO/A1 2 o 3 , MnO 2 /CeO 2 However, these catalysts have disadvantages such as poor stability and low catalytic...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] (1) Wash 83g of iron ferric oxide particles with a particle size of 4-6mm with 300mL of deionized water, soak in 500mL of acetone for 1h, remove the liquid after filtration to obtain substance M0, and obtain substance M0 after washing with 300mL of deionized water Substance M1, put substance M1 into 300mL hydrochloric acid solution with a molar concentration of 2.5mol / L and soak for 0.5h, remove the liquid after filtration to obtain substance M2, wash substance M2 with 300mL deionized water, and then use 500mL mass percent concentration of 95 After washing with % ethanol, place it in a drying oven at 85°C for 1.5h to obtain substance M3, and add substance M3 to 250mL of AgNO with a molar concentration of 2.07mol / L 3 In the solution, shake in a shaker at a temperature of 65°C for 75 minutes, filter and remove the liquid after cooling to room temperature to obtain substance M4, which is washed with 100mL of ethanol with a concentration of 97% by mass and placed in a drying...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention discloses a supported ferroferric oxide catalyst used in supercritical water oxidation to remove dichlorobiphenyl. A method for preparing the supported ferroferric oxide catalyst is characterized by cleaning ferroferric oxide and then modifying ferroferric oxide with AgNO3, thus preparing a substance M; modifying the substance M with mixed liquor prepared from polyvinylpyrrolidone, methanol, rhodium trichloride trihydrate, ruthenium trichloride trihydrate, concentrated hydrochloric acid and sodium borohydride, thus preparing a substance N; modifying the substance N with mixed liquor prepared from ZnCl2, PbCl2, concentrated nitric acid, urea and ammonium fluoride, thus preparing a substance O; modifying the substance O with mixed liquor prepared from tetra-n-butyl titanate, tetraethyl orthosilicate and acetylacetone, thus preparing a substance P; modifying the substance P with mixed liquor prepared from ZrCl4, CdCl2 and CeCl3, thus preparing a substance Q; and modifying the substance Q with mixed liquor prepared from SrCl2, SbCl3, NaOH, Na2CO3 and MgCl2, thus obtaining a substance, namely the supported ferroferric oxide catalyst used in supercritical water oxidation to remove dichlorobiphenyl.

Description

technical field [0001] The invention belongs to the technical field of supercritical water oxidation for refractory organic wastewater treatment, and in particular relates to a supported ferric iron tetroxide catalyst used for supercritical water oxidation to remove dichlorobiphenyl. Background technique [0002] Supercritical water oxidation is a wastewater treatment technology developed in the 1980s. It mainly uses molecular oxygen or hydrogen peroxide as an oxidant and supercritical water as a solvent to oxidize and decompose organic pollutants. In the oxidation process, due to the good solubility of supercritical water to various organic substances and oxygen, organic substances, oxidants and supercritical water form a homogeneous phase, the reaction will not be hindered by the mass transfer between the phases, and the reaction rate can be greatly increased. The reaction temperature of supercritical water oxidation treatment technology is generally 400-600°C, and the pre...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01J23/89C02F1/72C02F101/36
CPCB01J23/8973C02F1/725C02F2101/36C02F2305/02
Inventor 不公告发明人
Owner 北京清水润土环保科技有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap