Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A kind of preparation method of noble metal catalyst for catalytic wet oxidation

A technology for catalyzing wet oxidation and catalysts, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problem of unstable properties of amorphous alumina, sludge impurities Problems such as high content and inability to repeat

Active Publication Date: 2018-04-10
CHINA PETROLEUM & CHEM CORP +1
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method belongs to the process of physical mixing of alumina-containing species and activated carbon, and the dispersion of alumina and activated carbon is uneven; and the sludge used has high impurity content, and the obtained amorphous alumina is unstable, unrepeatable, and complex in structure

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

[0047] Add solid aluminum chloride and cerium nitrate into distilled water while heating and stirring until dissolved to obtain solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10wt% dilute ammonia water (b). Powdered coconut shell charcoal is impregnated with Pt-containing impregnation solution, dried at 120°C for 240 minutes, roasted at 550°C for 4 hours under nitrogen protection, added to glutamic acid aqueous solution and mixed evenly, with a liquid-solid volume ratio of 3:1, and then added water for beating. A slurry (c) is obtained. After adding (a) into the gelling tank and stirring and heating to 60°C, open the valve of the container containing (b), and control the system in the tank to drop to pH=4.0 within 10 minutes, then add (c), continue to add (b) dropwise, and control the dropwise addition of the tank system to pH=8.0 within 30 minutes. Keep the temperature at 60°C, pH=8.0, age for 1 hour, fi...

Embodiment 2

[0050]Add solid aluminum sulfate and cerium nitrate into distilled water while heating and stirring until dissolved to obtain solution (a). Add an appropriate amount of distilled water to the concentrated ammonia water and dilute it into about 10wt% dilute ammonia water (b). Powdered coconut shell charcoal is impregnated with an impregnating solution containing Rh, dried at 120°C for 240 minutes, roasted at 550°C for 4 hours under nitrogen protection, added to glutamic acid aqueous solution and mixed evenly, the liquid-solid volume ratio is 3:1, and then added water for beating. Obtain activated carbon slurry (c). Take a plastic tank, add (a) into the tank, stir and heat to 60°C, open the valve of the container containing (b), control the system in the tank to drop to pH=4.0 within 10 minutes, open (c ) the valve of the container, continue to drop (b), control the dropwise addition of the system in the tank to pH=8.0 within 30 minutes, control the valve of the container of (c...

Embodiment 3

[0053] Add solid aluminum sulfate and cerium nitrate into distilled water while heating and stirring until dissolved to obtain solution (a). The solid sodium metaaluminate is formulated to a concentration of 250g Al 2 o 3 / L sodium aluminate solution (b). Impregnate powdered coconut shell charcoal with Rh-containing impregnating solution, dry at 120°C for 240 minutes, and roast at 550°C for 4 hours under nitrogen protection, add glutamic acid aqueous solution and mix well, the liquid-solid volume ratio is 3:1, and then add water for beating , to obtain slurry (c). The water glass is diluted in deionized water according to the ratio of 1:2 to prepare solution (d). Take a glue tank, put 2L of deionized water into it, stir and heat it to 60°C, then add the slurry (c), open the valve of the container containing (a) and (b) at the same time, control the pH of the system to 8.0, and control it for 45 minutes After dripping (a) inside, close the valve. Keep the temperature at 65...

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

PropertyMeasurementUnit
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
radiusaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of a precious metal catalyst used for catalytic wet oxidation. The catalyst comprises a core-shell structured component, the core-shell structured component adopts precious metal supported active carbon as a core and rare earth metal-containing alumina or amorphous silica-alumina as a shell, and the preparation method comprises the following steps: introducing an amino acid treated rare earth metal-supported active carbon slurry in the gel formation process of a co-precipitation process prepared alumina or amorphous silica-alumina and rare earth metal compound, forming gel, and ageing to obtain the catalyst. The catalyst has high reaction activity and use stability.

Description

technical field [0001] The invention relates to a preparation method of a catalytic wet oxidation catalyst, in particular to a preparation method of a noble metal catalyst used for catalytic wet oxidation. Background technique [0002] With the increasingly stringent global environmental protection regulations, the control indicators for sewage discharge standards are getting higher and higher. Under this form, wastewater catalytic oxidation treatment methods have been paid more and more attention to and adopted by people, such as the catalytic wet method of high-concentration sewage Oxidation, electrolytic catalytic oxidation, photocatalytic oxidation, advanced oxidation, etc. In the process of catalytic oxidation of wastewater, in order to obtain the ideal treatment effect and keep the cost of wastewater treatment low by reducing the reaction temperature and pressure, the preparation of cheap catalysts with high active components, high strength and high stability has undou...

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
Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/63C02F1/74C02F101/34
Inventor 李宝忠蒋广安邓德刚单广波刘雪玲张晔郭宏山刘忠生
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com