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

A kind of carbon material immobilized palladium catalyst, its preparation and application

A technology of palladium catalyst and carbon material, which is applied in the field of palladium catalyst supported by carbon material, can solve the problems of the catalyst being difficult to reuse, the contact efficiency of the oxidant is low, the reaction efficiency is low, etc., and the preparation method is simple and feasible, the cost is low, and the reaction efficiency is low. Highly active effect

Active Publication Date: 2020-08-04
HUAZHONG UNIV OF SCI & TECH +1
View PDF13 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above defects or improvement needs of the prior art, the present invention provides a palladium catalyst immobilized on carbon materials, its preparation method and application, which fully combines the characteristics and application requirements of the palladium catalyst, and is targeted at the palladium catalyst carrying carrier and The immobilization method was redesigned, and a palladium catalyst immobilized on carbon materials with large specific surface area, high contact efficiency and high reactivity was correspondingly obtained, thereby solving the problem of the high cost of palladium catalysts used in existing advanced oxidation technologies, the reaction Technical problems such as fewer sites, low oxidant contact efficiency, low reaction efficiency, and difficulty in reusing catalysts

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of carbon material immobilized palladium catalyst, its preparation and application
  • A kind of carbon material immobilized palladium catalyst, its preparation and application
  • A kind of carbon material immobilized palladium catalyst, its preparation and application

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0033] The preparation method of the palladium catalyst that the carbon material that the present invention proposes immobilizes may further comprise the steps:

[0034] (1) Mix the biomass material and the palladium salt solution, adjust the pH to alkaline, perform a hydrothermal reaction after mixing to obtain a hydrothermal reaction product; the hydrothermal reaction is used to hydrothermally carbonize the biomass material, and Organic functional groups on the surface bind to palladium;

[0035] (2) The hydrothermal reaction product is subjected to solid-liquid separation to obtain a solid phase, and the solid phase is dried and then heat-treated to obtain the carbon-supported palladium catalyst; the heat treatment is used to remove the dried Binding water in the product, increasing the specific surface area of ​​the product and improving the binding force between the carbon substrate and palladium.

[0036] The biomass material in step (1) can be any biomass material, and...

Embodiment 1

[0060] A kind of preparation method of the palladium catalyst that carbon material is immobilized, the preparation process schematic diagram is as figure 1 shown, including the following steps:

[0061] (1) After mixing sawdust and palladium salt, adjust the pH to 10.0, stir with a magnetic stirrer at room temperature for 3 hours, and then put the mixed mixture into an ultrasonic wave for 40 minutes to make the Pd and sawdust evenly dispersed. Put the ultrasonically completed mixture into a hydrothermal reaction kettle, conduct a hydrothermal reaction at 200°C for 24 hours, vacuum filter, and dry to obtain a hydrothermal reaction product; sieve wood chips, select 50-mesh undersize, 200-mesh oversize , that is, the particle size range of wood chips is selected to be 75-280 μm, the mass ratio of palladium salt to wood chips is 1:10, and the solid-liquid ratio of the hydrothermal reaction is 1:10, the catalyst performance is better,

[0062] (2) The hydrothermal reaction product...

Embodiment 2

[0080] A kind of preparation method of the palladium catalyst particle of carbon material immobilization, comprises the steps:

[0081] (1) Use dried corn cobs, after grinding, take the 50-mesh sieve and the 200-mesh sieve (particle size 75-280 μm) and mix them with palladium salt, adjust the pH to 10.0, and stir with a magnetic stirrer at room temperature After 2 hours, put the mixed mixture into an ultrasonic wave for 30 minutes, so that the Pd and biomass materials are evenly dispersed. Put the ultrasonically completed mixture into a hydrothermal reaction kettle, conduct a hydrothermal reaction at 200°C for 12 hours, vacuum filter, and dry to obtain a hydrothermal reaction product; the mass ratio of palladium salt to sawdust is 1:10, and the hydrothermal reaction The solid-liquid ratio of the reaction is 1:5, and the performance of the prepared catalyst is better.

[0082] (2) The hydrothermal reaction product is subjected to solid-liquid separation to obtain a solid phase...

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
lengthaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of wastewater treatment, and more specifically, relates to a palladium catalyst immobilized on carbon material, its preparation method and application. Mix the biomass material and the palladium salt solution, adjust the pH to alkaline, and perform a hydrothermal reaction after mixing to obtain a hydrothermal reaction product; then perform solid-liquid separation of the hydrothermal reaction product to obtain a solid phase, and separate the solid phase After drying, heat treatment is performed to obtain the carbon-immobilized palladium catalyst; correspondingly, a carbon material-immobilized palladium catalyst with a large specific surface area, high contact efficiency, and high reactivity is obtained, thereby solving the problem of existing advanced oxidation technology. The palladium catalyst has technical problems such as higher cost, fewer reaction sites, low oxidant contact efficiency, low reaction efficiency, and difficulty in reusing the catalyst.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and more specifically relates to a palladium catalyst supported by carbon materials, a preparation method and application thereof. Background technique [0002] With the development of industry, pesticides and fertilizers, and various petroleum-derived materials industries, the pollution of water bodies by refractory organic pollutants such as phenols has become increasingly serious. Compared with general sewage, the content of pollutants in this kind of sewage is relatively low, but it is difficult to be treated by most sewage treatment systems, and the problem of its advanced treatment and discharge has not been effectively solved. People who drink water containing trace amounts of organic pollutants for a long time are more likely to suffer from digestive tract cancer. At present, several commonly used sewage treatment processes at home and abroad have unsatisfactory treatment effects on r...

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): B01J23/44B01J35/10B01J37/10C02F1/30C02F1/72C02F101/30
CPCC02F1/30C02F1/725B01J23/44B01J37/10C02F2101/30B01J35/613B01J35/615
Inventor 陈朱琦王华斌周新全侯鹏飞陈朱蕾
Owner HUAZHONG UNIV OF SCI & TECH
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