CN102580671B - Modified X-type small grain molecular sieve for purifying pollutants in indoor air and preparation method of same - Google Patents
Modified X-type small grain molecular sieve for purifying pollutants in indoor air and preparation method of same Download PDFInfo
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- CN102580671B CN102580671B CN 201210066841 CN201210066841A CN102580671B CN 102580671 B CN102580671 B CN 102580671B CN 201210066841 CN201210066841 CN 201210066841 CN 201210066841 A CN201210066841 A CN 201210066841A CN 102580671 B CN102580671 B CN 102580671B
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Abstract
The invention discloses a modified X-type small grain molecular sieve for purifying pollutants in the indoor air and a preparation method of the modified X-type small grain molecular sieve. The preparation method comprises the following steps: using an X-type small grain molecular sieve as the raw material and processing the X-type small grain molecular sieve into irregular particles by crushing, sieving and grinding; processing the irregular particles into particles with the required sizes; drying the obtained particles by an oven; and carrying out modification processing by a microwave method, particularly processing by using a household microwave oven, so as to obtain the finished product. The X-type small grain molecular sieve is prepared from natural mineral calcined kaolin. The X-type molecular sieve has the particle size of 50 to 80 nm and the aperture of 4 to 10 nm. The modified material is low in raw material cost, simple inmachining process and good in using effect. When being used for removing formaldehyde, ammonia, benzene series and TVOCs (total volatile organic compounds) in the indoor air, the modified X-type small grain molecular sieve has a high response speed and has no secondary pollution.
Description
Technical field
The present invention relates to a kind of sorbing material and preparation method thereof, specifically a kind of modified X-type small crystal grain molecular sieve that is used for the room air pollutant purification and preparation method thereof.
Background technology
Because interior decoration, room air is polluted, one group of data that interior decoration association reveals at the environment measuring center can illustrate the harm of finishing pollution to health intuitively: the annual death toll that is caused by room air pollution in the whole nation has surpassed 11.1 ten thousand people, and approximately be 304 people every day.The case diseases induced because of finishing pollution is just more, the almost all people can run into the problem of finishing pollution, there are a lot of people that headache, dizziness, weak, the bad phenomenon of sleeping are all arranged, some people, in the face of the finishing problem time, very heavy psychological burden is arranged, even suffer from mild depression, be reluctant in new house, to treat more.
According to relevant expert introduction, construction and decoration and furniture can cause indoor environmental pollution, and outstanding behaviours is at formaldehyde, TVOC, benzene series thing etc.A lot of families can produce some toxic gases such as formaldehyde, benzene etc. when fitting up, if in indoor excessive concentration, then the injury to human body is very big, and pregnant woman, children, the elderly belong to the easiest crowd who comes to harm, especially pregnant woman, live in for a long time in the contaminated environment, be easy to cause fetal anomaly.As seen, the air pollution situation after the interior decoration is quite severe.
Automobile has brought convenient and enjoyment for people's production and life, but in-vehicle air pollution also is the healthy killer of a stealth.Can detect multiple volatile organic matter in the new car, mostly harmful, wherein to human toxicity very big formaldehyde, benzene,toluene,xylene etc. are arranged.Along with the sharp increase of the annual sale of automobile amount of China, what bring is not only tail gas pollution, and serious in-vehicle air pollution problem is more arranged.Therefore, how properly settling the in-vehicle air pollution problem also is the problem that people relatively pay attention to.Therefore, research can be removed indoor, and in-vehicle exposure thing properties of materials is one of key problem of purifier technology in indoor, the car.
The tradition absorption method is to utilize in some materials that adsorption capacity is arranged such as the adsorption chambers such as active carbon, NACF, in the car formaldehyde, ammonia, benzene, toluene and other harmful components in the air and reach and eliminate harmful purpose of polluting.Yet charcoal absorption is based on physical absorption, poor selectivity, active carbon to above-mentioned pollutant adsorption effect about 70%, and if untimely dealing carefully with, these pernicious gases still can evaporate, and cause secondary pollution.
Summary of the invention
Technical problem to be solved by this invention is, a kind of modified X-type small crystal grain molecular sieve that is used for the room air pollutant purification and preparation method thereof is provided, and this material has good treatment effect to pollutants such as the formaldehyde in indoor, the car, ammonia, benzene series thing, TVOC.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: a kind of preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification, may further comprise the steps: adopting X type small crystal grain molecular sieve is raw material, become the irregular granular Φ of making=16-150 order by fragmentation, screening, attrition process, put into oven for drying, irradiance method with microwave carries out the modification processing then, obtains finished product.
The particle diameter 50-80nm of described X type small crystal grain molecular sieve, aperture 4-10nm.
Described X type small crystal grain molecular sieve is prepared by natural ore deposit calcined kaolin.
Described oven for drying condition is: dry 10-14h down for 90 ℃-110 ℃.
The power of the irradiation of described microwave is the exposure time 1-10min of 400-700W, microwave.
The irradiation of described microwave adopts household microwave oven.
The modified X-type small crystal grain molecular sieve of the preparation method of the above-mentioned modified X-type small crystal grain molecular sieve that is used for room air pollutant purification preparation is used for removing formaldehyde, ammonia, benzene series thing, TVOC in the air pollutant in indoor, the car.
The invention has the beneficial effects as follows:
1.X the type small crystal grain molecular sieve is the sorbing material of natural ore deposit calcined kaolin preparation, proportion is little, and specific area is big, has the good adsorption performance, and nontoxic, and low price is a sorbing material with X type small crystal grain molecular sieve, not only can adsorption chamber in.The dusty gas that the car interior decoration distributes, and be convenient to recycle and reuse, not only economy but also environmental protection.
2. X type small crystal grain molecular sieve of the present invention is material modified, render in newly-decorated indoor, the new car, laboratory, hospital have extraordinary absorption property to pollutant smells such as the formaldehyde that distributes, ammonia, benzene series thing, TVOC, adsorption rate is fast, instant effect, cost is low, can not bring secondary pollution, improve air quality simultaneously, very help new decorated house, the comprehensive regulation of contaminated air in the office building of sealing, new car, and X type small crystal grain molecular sieve is natural prodcuts, stable in properties, harmless to the people.
3. technology of the present invention is simple, easy to operate, and adaptive capacity is strong, can be applied to various types of air-pollutings field, the new decorated house of present China, the office building of sealing, new car suffers the pollution of pollutants such as formaldehyde, ammonia, benzene series thing, TVOC, has a strong impact on people's the quality of production.The present invention has a extensive future to administering contaminant applications such as formaldehyde, ammonia, benzene series thing, TVOC.
The specific embodiment
The preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification of the present invention, may further comprise the steps: adopting X type small crystal grain molecular sieve is raw material, become the irregular granular Φ of making=16-150 order by fragmentation, screening, attrition process, put into oven for drying, irradiance method with microwave carries out the modification processing then, obtains finished product.
The particle diameter 50-80nm of described X type small crystal grain molecular sieve, aperture 4-10nm.
Described X type small crystal grain molecular sieve is prepared by natural ore deposit calcined kaolin.
Described oven for drying condition is: dry 10-14h down for 90 ℃-110 ℃.
The power of the irradiation of described microwave is the exposure time 1-10min of 400-700W, microwave.
The irradiation of described microwave adopts household microwave oven.
The modified X-type small crystal grain molecular sieve of preparation method's preparation of the above-mentioned modified X-type small crystal grain molecular sieve that is used for the room air pollutant purification.Be used for removing formaldehyde, ammonia, benzene series thing, TVOC in the air pollutant in indoor, the car.
For a better understanding of the present invention, further illustrate content of the present invention, but the present invention not only is confined to following example below in conjunction with example; Concrete example and not meaning that limits the scope of the invention.
Embodiment 1:
A kind ofly be used for new decorated house, the office building of sealing purifies the modified X-type small crystal grain molecular sieve of pollutants such as formaldehyde, ammonia, benzene series thing, TVOC in the new car, it is a raw material by X type small crystal grain molecular sieve, by fragmentation, screening, series of process such as attrition process are processed into the irregular granular Φ of making=16-20 order, put into oven for drying, dry 14h down for 90 ℃, the high fire of micro-wave oven (family expenses) power (700W) is set, radiated time 4min, X type small crystal grain molecular sieve is finished product.
Embodiment 2:
A kind ofly be used for new decorated house, the office building of sealing purifies the modified X-type small crystal grain molecular sieve of pollutants such as formaldehyde, ammonia, benzene series thing, TVOC in the new car, it is a raw material by X type small crystal grain molecular sieve, by fragmentation, screening, series of process such as attrition process are processed into the irregular granular Φ of making=50-80 order, put into oven for drying, dry 12h down for 100 ℃, microwave power moderate heat (500W) is set, radiated time 6min, X type small crystal grain molecular sieve is finished product.
Embodiment 3:
A kind ofly be used for new decorated house, the office building of sealing purifies the modified X-type small crystal grain molecular sieve of pollutants such as formaldehyde, ammonia, benzene series thing, TVOC in the new car, it is a raw material by X type small crystal grain molecular sieve, by fragmentation, screening, series of process such as attrition process are processed into the irregular granular Φ of making=100-150 order, put into oven for drying, dry 10h down for 110 ℃, the low fire of microwave power (400W) is set, radiated time 10min, X type small crystal grain molecular sieve is finished product.
The test example: the embodiment of the invention 1, embodiment 2, and embodiment 3 modified X-type small crystal grain molecular sieves are handled formaldehyde, ammonia, benzene series thing, TVOC effect.
With embodiment 1, embodiment 2, and embodiment 3, and the modified molecular screen material and the unmodified molecular sieve of preparation carry out the processing of air pollutants, detect its pollutant treatment effect (table 1)
Experimental rig: adopt totally-enclosed environmental simulation experiment module CJ-HJ-03, long 1.0m, wide 1.0m, high 2.5m is equipped with formaldehyde, benzene, ammonia, TVOC respectively in the Laboratory Module, 20 degrees centigrade of temperature, pressure 101.3KP.
Sampling situation explanation: according to " civil building engineering indoor environmental pollution control standard " GB50325-2010, formaldehyde, benzene, ammonia, TVOC to totally-enclosed environmental simulation experiment module CJ-HJ-03 carry out sample detecting, wherein one the tunnel is measured value in the cabin, and another road is through the measured value after the fine-grain X type molecular sieve adsorption.
The treatment effect of several different samples of table 1 relatively
Microwave method radiation modification porous material is that the micropore of the many obturations of molecular sieve is opened, and micropore is abundant, helps removing of pollutant, and microwave can be accelerated the mass transfer velocity of porous media inside, has eliminated interior diffusion influence.Above result of the test shows that the effect of pollutant is more much better than unmodified treatment effect in the fine-grain X type molecular screen material processing air after the modification.
Above-described embodiment only is used to illustrate technological thought of the present invention and characteristics, its purpose is to make those skilled in the art can understand content of the present invention and implements according to this, can not only limit claim of the present invention with present embodiment, be equal variation or the modification that all disclosed spirit is done, still drop in the claim of the present invention.
Claims (5)
1. preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification, it is characterized in that, may further comprise the steps: adopting X type small crystal grain molecular sieve is raw material, become the irregular granular Φ of making=16-150 order by fragmentation, screening, attrition process, put into oven for drying, the irradiance method with microwave carries out the modification processing then, obtain finished product, described X type small crystal grain molecular sieve is by the preparation of natural ore deposit calcined kaolin, particle diameter 50-80nm, aperture 4-10nm.
2. the preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification according to claim 1 is characterized in that, described oven for drying condition is: 90 ° of C-110 ° C are dried 10-14h down.
3. the preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification according to claim 1 is characterized in that the power of the irradiation of described microwave is the exposure time 1-10min of 400-700 W, microwave.
4. the preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification according to claim 3 is characterized in that, the irradiation of described microwave adopts household microwave oven.
5. the modified X-type small crystal grain molecular sieve that the preparation method who is used for the modified X-type small crystal grain molecular sieve of room air pollutant purification as claimed in claim 1 prepares.
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| CN104888694A (en) * | 2015-05-28 | 2015-09-09 | 同济大学 | Adsorbing material for efficiently adsorbing indoor formaldehyde and methylbenzene gases |
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Non-Patent Citations (2)
| Title |
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| 用沸石吸收微波性能表征沸石特性的研究;解丽丽等;《燃料化学学报》;20010831;第29卷;60-62 * |
| 解丽丽等.用沸石吸收微波性能表征沸石特性的研究.《燃料化学学报》.2001,第29卷60-62. |
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