Unlock instant, AI-driven research and patent intelligence for your innovation.

Manganese oxide-loaded polyethylene foam derivative catalyst, a forming material module, combination and preparation method and application of the manganese oxide-loaded polyethylene foam derivative catalyst

A polyethylene foam, molding material technology, applied in the direction of organic compound/hydride/coordination complex catalyst, catalyst carrier, physical/chemical process catalyst, etc., can solve the problem of large fluid flux, large specific surface area and low bulk density and other problems, to achieve the effect of simple preparation process, simple preparation method, high chemical and thermal stability

Active Publication Date: 2021-07-20
SHANGHAI UNIV
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, the obtained loaded catalyst (molded catalyst) is framed to form a module with a rigid material including metal, especially aluminum alloy, and assembled into a module, which further solves the problem that the manganese oxide-loaded polyethylene foam derivative catalyst is difficult to obtain because of its light material. It is directly used in the problem of catalytic decomposition of hydrogen peroxide in the water phase and gas phase, which is more conducive to practical application and also helps to reduce production costs. The molded catalyst module of the present invention has large specific surface area, low bulk density, high mechanical strength, and high porosity. , large fluid flux, large loading capacity, hot melting, good chemical stability, thermal processability, and low production cost, and can be used in the fields of hydrogen peroxide decomposition, Fenton reaction and Fenton-like reaction

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
  • Manganese oxide-loaded polyethylene foam derivative catalyst, a forming material module, combination and preparation method and application of the manganese oxide-loaded polyethylene foam derivative catalyst
  • Manganese oxide-loaded polyethylene foam derivative catalyst, a forming material module, combination and preparation method and application of the manganese oxide-loaded polyethylene foam derivative catalyst
  • Manganese oxide-loaded polyethylene foam derivative catalyst, a forming material module, combination and preparation method and application of the manganese oxide-loaded polyethylene foam derivative catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] In this example, a manganese oxide-loaded polyethylene foam derivative catalyst is prepared by the impregnation-melting method, using polyethylene foam blocks with hollow through holes as the carrier raw material, and the manganese oxide-loaded catalyst is prepared by the impregnation method. The precursor of the polyethylene foam derivative catalyst molding material, and then use the melting method to melt and modify the hollow polyethylene foam block of the precursor of the polyethylene foam derivative catalyst molding material loaded with manganese oxide, shrink in volume, and form a ring shape Or distort the polyethylene foam derivative carrier in the form of a ring ring, and make the manganese oxide powder catalyst partially adhere to the surface of the polyethylene foam derivative to obtain the manganese oxide-loaded polyethylene foam derivative catalyst. In this embodiment, the powdered catalyst is fixed on the surface of the polyethylene foam derivative by embedd...

Embodiment 2

[0106] This embodiment is basically the same as the previous embodiment, and the special features are:

[0107] In this example, a method for preparing a manganese oxide-loaded polyethylene foam derivative catalyst, using the impregnation-melt method to prepare shaped catalyst-loaded manganese oxides (γ-MnO 2 ) Polyethylene foam derivative catalyst (γ-MnO 2 / EPE-derivatives), the specific steps are as follows:

[0108] (1) γ-MnO 2 The preparation process is with embodiment one;

[0109] (2) Shaped catalyst γ-MnO 2 / Preparation of EPE-derivatives

[0110] a. This step is the same as in Embodiment 1;

[0111] b. This step is the same as in Embodiment 1;

[0112] c. Use polyethylene foam (EPE) with a certain size and regular shape as the initial carrier. The corresponding shape of the polyethylene foam material is a cylinder with a diameter of 40mm and a height of 30mm. A diameter of 20mm and a height of 30mm is removed by machining. For a 30mm cylinder, form a hollow cyl...

Embodiment 3

[0118] This embodiment is basically the same as the previous embodiment, and the special features are:

[0119] In this example, a method for preparing a manganese oxide-loaded polyethylene foam derivative catalyst, the impregnation-melting method is used to prepare a shaped catalyst-loaded manganese oxide (γ-MnO 2 ) Polyethylene foam derivative catalyst (γ-MnO 2 / EPE-derivatives), and make the module with an aluminum alloy frame, the specific steps are as follows:

[0120] (1) γ-MnO 2 The preparation process is with embodiment one;

[0121] (2) Shaped catalyst γ-MnO 2 / Preparation of EPE-derivatives

[0122] a. This step is the same as in Embodiment 1;

[0123] b. This step is the same as in Embodiment 1;

[0124] c. This step is identical with embodiment two;

[0125] d. This step is the same as in Embodiment 1;

[0126] e. This step is the same as in Embodiment 1. Form the bulk product into a catalyst-supported manganese oxide (nano-γ-MnO 2 ) Polyethylene foam de...

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
diameteraaaaaaaaaa
sizeaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention provides a manganese oxide-loaded polyethylene foam derivative catalyst, a forming material module, a combination and a preparation method and application of the manganese oxide-loaded polyethylene foam derivative catalyst, a manganese oxide powder catalyst is loaded and fixed on a polyethylene foam derivative by adopting a dipping-melting method, and the formed and easily-circulated loaded catalyst is prepared. The defect of direct use of the powder catalyst is avoided; a large amount of waste polyethylene foam is recycled, waste is turned into wealth, and harm to the environment is reduced. The forming catalyst is prepared by utilizing the surface of the polyethylene foam, the integral foam holes and the hot meltbility, and the forming catalyst is subjected to module filling, so that the problems that the polyethylene foam derivative catalyst is light in material and difficult to directly use are solved. The formed catalyst has the advantages of large specific surface area, low bulk density, high mechanical strength, high porosity, large fluid flux, large active powder catalyst loading capacity, good chemical stability and low production cost, and can be applied to the fields of hydrogen peroxide decomposition, Fenton reaction, Fenton-like reaction and the like.

Description

technical field [0001] The invention relates to the preparation of a manganese oxide-loaded polyethylene foam derivative catalyst and its module and its application in catalyzing the decomposition of hydrogen peroxide in water and gas, belonging to the technical field of shaped catalyst preparation. Background technique [0002] Hydrogen peroxide (H 2 o 2 ) has strong oxidation and high water solubility, and can have oxidation or reduction under different circumstances. It is generally divided into three types: medical, military and industrial. Medical hydrogen peroxide (about 3% or less) is a good disinfectant. Industrial hydrogen peroxide (about 35%) is used for bleaching, strong oxidizing agents, dechlorinating agents and fuels. 99% military-grade hydrogen peroxide is mainly used in aerospace engines and manned spacecraft, and can also be used in military satellites, launch vehicles and anti-ballistic missiles. In daily production and life, hydrogen peroxide is the mo...

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 Applications(China)
IPC IPC(8): B01J31/06B01J32/00C01G45/02B01D53/86B01D53/46C02F1/58C02F101/10
CPCB01J31/069C01G45/02B01D53/8671C02F1/58C01P2002/72C02F2101/10
Inventor 胡龙兴王素芹牛刚
Owner SHANGHAI UNIV