CN1970145A

CN1970145A - Catalyst for promoting ozone freeradical yield and its preparation method

Info

Publication number: CN1970145A
Application number: CNA2005101256054A
Authority: CN
Inventors: 刘英慧
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-11-24
Filing date: 2005-11-24
Publication date: 2007-05-30

Abstract

It relates to a catalyst for forming ozone free radicals mixed with Al2O3, CuSO4, TiO2 and metal oxidization, with Al2O3 ingredient 20-40%, CuSO4 10%-20%, TiO2 10%-30%, with the metal oxidization mixture formed by Na(Mg,Fe,Mn,Li,Al)3Al6[Si6O18](BO3)3(OH,F)4 or K(Li,Al)3[(F,OH,O)2|(Si,Al)4O10], with ingredient 20-40%, going through the processes of mixing with ingredients, and sintering to get catalysts. With the function of ultra violet, ultra sonic, electromagnetic wave, electrical field and magnetic filed, it greatly improves the generating quantity of ozone free radicals with improved treatment effects for polluted water and air.

Description

Improve the Catalysts and its preparation method of ozone freeradical yield

Technical field

The present invention relates to a kind of Catalysts and its preparation method that improves ozone freeradical yield, particularly a kind of can be under the effect in electromagnetic wave or ultrasonic wave or electric field or magnetic field, ozone decomposed fast and significantly improve metal oxide catalyst and this Preparation of catalysts method of ozone freeradical yield.

Background technology

As everyone knows, drink contaminated water and can cause the generation of corresponding disease, the water of Wu Raning also can produce direct influence to vegeto-animal growth simultaneously, and the harmful substance in the water can be accumulated in the animal and plant body, and human edible these animals and plants will bring harm to health.In addition, the necessary air-polluting of life increases the weight of equally also threatening human beings'health, with regard to present known human the disease that takes a disease more than 80% with to drink unclean water relevant with the air of edible contaminated food products and aspiration contamination.

Along with people improve day by day to the protection of healthy living, natural environment consciousness, the poisonous and harmful substance of discharging is controlled, cleared up, sewage is administered and the work that air purifies has been obtained the general attention of people.

In high concentration, high harm, in the processing of high toxicity organic sewage, at present oxidizing process that adopt more, its basic principle mainly is to utilize the strong oxidation characteristic of hydroxyl radical free radical, and oxidation Decomposition is difficult to the mode of other biochemical oxidations oxidation processes that organic pollution materials carried out.The method that produces hydroxyl radical free radical is more, and ozone is a kind of method that is commonly used to produce free radical.This province of ozone has strong oxidability, and its oxidation-reduction potential is 2.07V, is only second to fluorine (oxidation-reduction potential is 3.0V) and hydroxyl radical free radical (oxidation-reduction potential is 2.79).Ozone and free radical thereof can the most of organic matters of oxidation, simultaneously to bacterium, microorganism such as fungi and virus also has very strong oxidation, they can directly be had an effect with microorganism, the structure of destroy microorganisms, stop metabolism growth and the breeding of microorganism, cause the dissolving death of microorganism.

Ozone and organic reaction are by two Basic Ways, the one, direct reaction, this reaction is selectively as ozone, the 2nd, indirect reaction, in this reaction, ozone is oxidant with the free radical that decomposition reaction generates, the not only rapid but also non-selectivity of the indirect reaction of these free radical types.Because the oxidation reaction non-selectivity of free radical, they almost can all organic matters of oxidation, are confined to some specific pollutant unlike ozone molecule.Hence one can see that, if decomposition that can accelerate ozone makes it generate a large amount of ozone free radicals, just can the air of the water of pollution and pollution be carried out efficiently, purified treatment completely.

Because the generating mode of ozone free radical normally generates in the decomposable process of above-mentioned ozone, therefore, its formation efficiency is lower, can't satisfy the efficient purification treatment requirement to sewage, air.

Summary of the invention

The objective of the invention is at the efficient of above-mentioned ozone free radical that selective oxidation reaction generates lower, can't satisfy efficient purification treatment requirement to sewage, air, and provide a kind of catalyst and this Preparation of catalysts method thereof that improves ozone freeradical yield, can prepare described catalyst easily by described preparation method, this catalyst can improve the growing amount of free radical under the radiation in ultraviolet ray, ultrasonic wave, electromagnetic wave, electric field, magnetic field, improve sewage and air-polluting governance efficiency.

For achieving the above object, a kind of catalyst that improves ozone freeradical yield of the present invention, this catalyst comprises Al ₂O ₃, CuSO ₄, TiO ₂Mixture with metal oxide; Described Al ₂O ₃Component be 20-40%, be used for carrier as catalyst; Described CuSO ₄Component be 10%-20%; Described TiO ₂Component be 10%-30%; The mixture of described metal oxide is Na (Mg, Fe, Mn, Li, AL) ₃AL ₆[Si ₆O ₁₈] (BO ₃) ₃(OH, F) ₄Or K (Li, Al) 3[(F, OH, O) 2| (Si, Al) 4O10], the component of the mixture of this metal oxide is 20-40%.

A kind of method for preparing catalyst of the present invention, it may further comprise the steps:

Step 1, will weigh form described catalyst each component mix, obtain compound;

Step 2, described compound is carried out sintering, the temperature value of sintering is 1000 ℃-1200 ℃;

Step 3, with the cooling of the described compound behind the sintering, obtain described catalyst.

As shown from the above technical solution, the present invention will be as the Al of carrier ₂O ₃With CuSO ₄, TiO ₂After the high temperature sintering combination, constitute catalyst with the mixture of metal oxide, this catalyst can be under the radiation in ultraviolet ray, ultrasonic wave, electromagnetic wave, electric field, magnetic field, the amount that makes ozone decompose the free radical that generates is greatly improved, when being used for that sewage and contaminated air are carried out governance process, governance efficiency and regulation effect are significantly improved.

Below, also the present invention is described in further detail in conjunction with the accompanying drawings by specific embodiment.

Description of drawings

Figure 1 shows that the flow chart of a preferred embodiment of method for preparing catalyst of the present invention.

The specific embodiment

Catalyst of the present invention comprises Al ₂O ₃, CuSO ₄, TiO ₂With the mixture of metal oxide, and through the sintered combination formation.Al ₂O ₃Be shaped as graininess, shared component is 20-40% in catalyst.Al ₂O ₃Be used for the carrier as catalyst, its concrete embodiment that forms is as follows:

Embodiment one

Al ₂O ₃Component is 20-40%

CuSO ₄Component is 10%-20%

TiO ₂Component is 10%-30%

Na (Mg, Fe, Mn, Li, AL) ₃AL ₆[Si ₆O ₁₈] (BO ₃) ₃(OH, F) ₄Component is 20-40%

The ZnO component is 5%-25%

The AgO component is 2%-8%

Fe ₂O ₃Component is 10%-30%

Ce elemental constituent is 1%-5%

Embodiment two

Al ₂O ₃Component is 20-40%

CuSO ₄Component is 10%-20%

TiO ₂Component is 10%-30%

K (Li, Al) 3[(F, OH, O) ₂| (Si, Al) ₄O ₁₀] component is 20-40%

The NiO component is 10%-20%

WO ₃Component is 10%-30%

MnO ₂Component is 3%-6%

The oxide component of Ru is 1%-5%

Among above-mentioned two embodiment, the selecting for use of oxide, interpolation and consumption, can match flexibly at the concrete water of processing or pollution level, major pollutants attribute and the desired degree of treatment of gas of needing, and Ce element that adds or the oxide of Ru, can also substitute with the oxide of the oxide of Nd element or Rh element or Pd element or Pt element or Ce element and Nd element, Rh element, Pd element, Pt element, its objective is in order to improve activity of such catalysts.

A preparation method's of the present invention most preferred embodiment may further comprise the steps:

Each component of step 11, the composition catalyst that will weigh is mixed, and obtains compound;

Step 12, compound is carried out sintering at 1050 ℃, the time of sintering is 4-8 hour, and brings up to 1050 ℃ with constant speed in 1 hour;

Step 13, with the cooling of the described compound behind the sintering, obtain described catalyst.

In above-mentioned preparation process, sintering temperature also can be controlled at 1000 ℃-1200 ℃, and the concrete time can be set according to concrete needs.

It should be noted last that: above embodiment is the unrestricted technical scheme of the present invention in order to explanation only, although the present invention is had been described in detail with reference to the foregoing description, those of ordinary skill in the art is to be understood that: still can make amendment or be equal to replacement the present invention, and not break away from the spirit and scope of the present invention.

Claims

1, a kind of catalyst that improves ozone freeradical yield is characterized in that described catalyst comprises Al ₂O ₃, CuSO ₄, TiO ₂Mixture with metal oxide; Described Al ₂O ₃Component be 20-40%, be used for carrier as catalyst; Described CuSO ₄Component be 10%-20%; Described TiO ₂Component be 10%-30%; The mixture of described metal oxide is Na (Mg, Fe, Mn, Li, AL) ₃AL ₆[Si ₆O ₁₈] (BO ₃) ₃(OH, F) ₄Or K (Li, Al) 3[(F, OH, O) 2| (Si, Al) 4O10], the component of the mixture of this metal oxide is 20-40%.

2, the catalyst of raising ozone freeradical yield according to claim 1 is characterized in that described Al ₂O ₃Be graininess.

3, the catalyst of raising ozone freeradical yield according to claim 1 and 2 is characterized in that also comprising in the described catalyst that component is that NiO and/or the component that the ZnO of 5%-25% and/or AgO that component is 2%-8% and/or component are 10%-20% is the WO of 10%-30% ₃And/or component is the Fe of 10%-30% ₂O ₃And/or component is the MnO of 3%-6% ₂,

4, the catalyst of raising ozone freeradical yield according to claim 1 and 2, it is characterized in that in the described catalyst also increasing that component is arranged is the Ce element of 1%-5% or the oxide of Nd element or Ru element or Rh element or Pd element or Pt element or described Ce element, Nd element, Ru element, Rh element, Pd element and Pt element, be used to improve described activity of such catalysts.

5, a kind of based on the arbitrary described Preparation of catalysts method of aforesaid right requirement 1-4, it is characterized in that may further comprise the steps:

Each component of step 1, the described catalyst of composition that will weigh is mixed, and obtains compound;

6, preparation method according to claim 5 is characterized in that, the sintering time in the described step 2 is 4-8 hour.

7, preparation method according to claim 5 is characterized in that, the sintering temperature in the described step 2 was brought up to 1000 ℃-1200 ℃ with constant speed in 1 hour.

According to claim 5,6 or 7 described preparation methods, it is characterized in that 8, described sintering temperature is 1050 ℃.