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

Ozone decomposition composite catalyst and preparation method thereof

A composite catalyst, ozone decomposition technology, applied in molecular sieve catalysts, separation methods, chemical instruments and methods, etc., can solve the problems of small specific surface area of ​​quartz sand, unsuitable adsorbents, etc., and achieve long service life, high decomposition rate, and safety. Good results

Inactive Publication Date: 2014-12-17
温得伟
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It's just that the specific surface area of ​​quartz sand is small, so it is not suitable for use as an adsorbent.

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
  • Ozone decomposition composite catalyst and preparation method thereof
  • Ozone decomposition composite catalyst and preparation method thereof
  • Ozone decomposition composite catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] A composite catalyst for ozone decomposition is prepared by mixing nanometer iron oxyhydroxide modified zeolite and ferric ion alkalized modified quartz sand at a mass ratio of 1:4.

[0103] The preparation method of the ozonolysis composite catalyst comprises the preparation of nano-iron oxyhydroxide modified zeolite and the preparation of ferric ion alkalized modified quartz sand, wherein the preparation method of nano-iron oxyhydroxide modified zeolite comprises the following steps: (1) , the concentration is 1.2mol L -1 FeCl 3 The solution was stirred, and during the stirring process, the concentration was 0.1mol L -1 NaOH solution, so that the pH of the solution reaches 2.0-2.5, at this time, nano-crystals of iron oxides are formed, and are stably distributed in the colloidal system, that is, the iron-containing sol; (2), the zeolite is put into the to dilute HNO at pH 5 3 In the solution, after shaking for 30 minutes, slowly add the iron-containing sol prepared...

Embodiment 2

[0105] A composite catalyst for ozone decomposition is prepared by mixing nano-iron oxyhydroxide modified zeolite and iron ion alkalized modified quartz sand at a mass ratio of 1:2.

[0106] The preparation method of this ozonolysis composite catalyst is the same as the preparation method in Example 1, the difference is: the iron salt solution used is Fe 2 (SO 4 ) 3 Solution, the used quartz sand particle size is 0.9mm.

Embodiment 3

[0108] A composite catalyst for ozone decomposition is prepared by mixing nanometer iron oxyhydroxide modified zeolite and ferric ion alkalized modified quartz sand at a mass ratio of 1:1.

[0109] The preparation method of the ozonolysis composite catalyst is the same as that in Example 1, except that the particle size of the quartz sand used is 1.0 mm.

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
Granularityaaaaaaaaaa
Login to View More

Abstract

The invention discloses an ozone decomposition composite catalyst and a preparation method thereof. The composite catalyst is prepared by mixing iron modified zeolite and iron modified quartz sand in a mass ratio of 1:4-4:1. The preparation method of the composite catalyst comprises the following steps: modifying zeolite with nano hydroxyl iron oxide to prepare iron modified zeolite, modifying quartz sand with iron ions in an alkalifying mode to prepare the iron modified quartz sand, and proportionally mixing the modified zeolite and the modified quartz sand to obtain the composite catalyst disclosed by the invention. The composite catalyst not only can display the heating of quartz sand to enhance the thermal decomposition action on O3, but also can display the adsorptive decomposition effect of the modified zeolite, and thus, has the advantages of high decomposition rate, high safety, no self consumption, long service life, no harmful substance generation and the like.

Description

technical field [0001] The invention relates to the technical field of ozonolysis catalysts, in particular to an ozonolysis composite catalyst and a preparation method thereof. Background technique [0002] Ozone (O 3 ) is of great significance to life on earth. The ozone layer can absorb ultraviolet rays with a wavelength below 306.3nm in sunlight. However near Earth O 3 Pollution and indoor O 3 But it will cause serious harm to human body and ecological system. Studies have shown that when O 3 When the concentration exceeds 0.05ppm, it has already caused harm to human health, and when it exceeds 0.1ppm, it will directly affect the respiratory and motor functions of the human body. o 3 It can cause neurotoxicity, dizziness, headache, vision loss, and memory loss. Indoor O 3 The chemical reactions and products with different organic substances are very complicated. The reaction products include carcinogens such as formaldehyde and acrolein, irritating substances such...

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): B01J29/072B01J29/00B01D53/86B01D53/66
CPCY02A50/20
Inventor 温得伟
Owner 温得伟