CN103433054A - Compound catalyst for removing formaldehyde and preparation method of compound catalyst - Google Patents
Compound catalyst for removing formaldehyde and preparation method of compound catalyst Download PDFInfo
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- CN103433054A CN103433054A CN2013103509945A CN201310350994A CN103433054A CN 103433054 A CN103433054 A CN 103433054A CN 2013103509945 A CN2013103509945 A CN 2013103509945A CN 201310350994 A CN201310350994 A CN 201310350994A CN 103433054 A CN103433054 A CN 103433054A
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Abstract
The invention relates to the technical field of chemical catalysts, in particular to a compound catalyst for removing formaldehyde and a preparation method of the compound catalyst. The catalyst is prepared by taking an inert substance as a carrier and loading multiple metal oxides. The compound catalyst has the advantages as follows: 1) the catalyst can reduce formaldehyde which is 8-12 times more than the standard to be below qualification standard with low addition amount in a short time; 2) the synthesis process is simple; the preparation cost is relatively low and cheap; 3) the catalyst is based on multi-phase reaction principle, so that the catalyst can be recycled with lasting effect, and can not cause secondary pollution. The synthesis process is simple, and the preparation cost is relatively low.
Description
technical field:
The present invention relates to the technical field of chemical catalyst, specifically, relate to a kind of except formaldehyde composite catalyst and preparation method thereof.
background technology:
After the progress of industrial technology civilization, the various indoor decorations that relate in life have also had how better selection: exquisite decoration, abundant household electrical appliance, information products etc. easily, these are chosen in when having promoted our quality of life and also tend to cause the IAQ variation.According to statistics, people spend indoor the average nearly time more than 80% of every day, and the part special population even can be up to more than 93%, and therefore, IAQ just seems more important to health.
As everyone knows, when indoor decoration, inevitably produced the dusty gas much be detrimental to health, as formaldehyde, benzene, toluene and some VOCs (TVOCs) etc.In numerous dusty gas, formaldehyde pollution is particularly serious, formaldehyde is as a kind of high toxic material, can stimulate eyes, nasal cavity and respiratory tract, also can increase the possibility of cancer, teratogenesis simultaneously, show according to statistics, the formaldehyde content in indoor air of Chinese most city half family exceeds standard, thus exploitation efficient except formaldehyde products significant.
Method except formaldehyde in prior art mainly contains absorption method and photocatalytic method, and there is the equilibrium problem of absorption and desorption in described absorption method, particularly when low concentration, is difficult to bring into play adsorption effect; Although described photocatalytic method can be realized the degraded to pernicious gas, ultraviolet lighting need to be arranged, and can produce O in the UV-irradiation process
3pollute.In addition, also have a kind of efficient adsorption catalysis method seldom adopted, it is synthetic, with high costs as catalyst substrates that the filtrate majority of described efficient adsorption catalysis method be take the noble metals such as gold, platinum and silver, seriously limited its application.
summary of the invention:
The technical problem to be solved in the present invention is, provides a kind of adsoption catalysis effective, do not have secondary pollution, and lower-cost except formaldehyde composite catalyst and preparation method thereof.
For solving the problems of the technologies described above, the present invention adopts a kind of like this except the formaldehyde composite catalyst, and described catalyst is to take inert substance as carrier, after the load poly-metal deoxide, is prepared from.
The present invention compares except the formaldehyde composite catalyst with of the prior art, has the following advantages: 1) at few additive, the 8-12 formaldehyde doubly that exceeds standard can be reduced to below criterion of acceptability in the short time; 2) synthesis technique is simple, and preparation cost is relatively cheap; 3) this catalyst belongs to heterogeneous reaction mechanism, and long-acting use capable of circulation, can not cause secondary pollution.
As preferably, described inert substance is one or more the mixture in silica, powder active carbon, active carbon short fiber, inertia ore or inertia organic polymer, selects variation, and selection is simple.
Preferably described poly-metal deoxide is by the catalytic decomposition component and the auxiliary catalysis component is composite forms as another, and described composite coefficient is 10:1 ~ 100:1, and function is comparatively complete.
Preferably described catalytic decomposition component is any two or more the mixture in Mn oxide, ferriferous oxide, Cu oxide, zinc oxide, titanium oxide or silver oxide, selects variation as another, and selection is simple.
Preferably described auxiliary catalysis component is any one or a few the mixture in barium oxide, nickel oxide, tungsten oxide, molybdenum oxide, cerium oxide or cobalt/cobalt oxide, selects variation as another, and selection is simple.
As another preferred, the mixture that described catalytic decomposition component is Mn oxide, ferriferous oxide, zinc oxide and titanium oxide, combination property the best, better effects if.
As another preferably, described auxiliary catalysis group is one or more the mixture in barium oxide, tungsten oxide or cerium oxide, combination property the best, better effects if.
For solving the problems of the technologies described above, the present invention adopts a kind of like this preparation method except the formaldehyde composite catalyst, and it mainly comprises the following steps:
(1) preparation of carrier;
(2) prepare high valence state metal oxide and saline solution thereof, and it is mixed with carrier;
(3) preparation lower valency metal oxide and saline solution and alkaline solution;
(4) by step 3 at a middle or low price state metal oxide and saline solution and alkaline solution all dropwise add in the mixed liquor after step 2, the pH value of mixed liquor is adjusted to 8 and stops, standing, suction filtration, obtain the presoma of composite catalyst;
(5) presoma of composite catalyst is fully dried to roasting in Muffle furnace;
(6) finished product.
As preferably, described carrier is one or more the mixture in silica, powder active carbon, active carbon short fiber, inertia ore or inertia organic polymer, selects variation, and selection is simple.
As another preferred, in step 5, bake out temperature is 80 ~ 150 degrees centigrade, and the sintering temperature of described Muffle furnace is 300 ~ 500 degrees centigrade, and roasting time is 2 ~ 5 hours, and cost is lower, and efficiency is higher, ageing good.
The present invention compares with the preparation method except the formaldehyde composite catalyst of the prior art, and have the following advantages: synthesis technique is simple, and preparation cost is relatively cheap.
the specific embodiment:
Below in conjunction with specific embodiment, the invention will be further described.
Of the present invention a kind of except the formaldehyde composite catalyst, described catalyst is to take inert substance as carrier, after the load poly-metal deoxide, be prepared from, in detail, described inert substance is silica, powder active carbon, the active carbon short fiber, the mixture of one or more in inertia ore or inertia organic polymer, described poly-metal deoxide is by the catalytic decomposition component and the auxiliary catalysis component is composite forms, described composite coefficient is 10:1 ~ 100:1, wherein, described catalytic decomposition component is Mn oxide, ferriferous oxide, Cu oxide, zinc oxide, any two or more mixture in titanium oxide or silver oxide.Described auxiliary catalysis component is any one or a few the mixture in barium oxide, nickel oxide, tungsten oxide, molybdenum oxide, cerium oxide or cobalt/cobalt oxide, say further, the mixture that best catalytic decomposition component is Mn oxide, ferriferous oxide, zinc oxide and titanium oxide, and best auxiliary catalysis group is one or more the mixture in barium oxide, tungsten oxide or cerium oxide.Composite catalyst is calibration curve and the coefficient calculations that reference standard GB/T 18204.26-2000 " public place method for determining formaldehyde in air " carries out except the method for testing of formaldehyde performance, and concrete test experiments correction data is as follows:
embodiment mono-
Described carrier is inertia silica, and described poly-metal deoxide is that Mn oxide, ferriferous oxide, zinc oxide, titanium oxide, barium oxide, cerium oxide are by the composite mixture obtained.
1. the preparation of inertia silica supports solution:
The distilled water of the ethyl orthosilicates of 2 parts, the ethanol of 5 parts, the nitric acid of 0.2 part and 0.5 part is poured into to manual stir about in special-purpose liquid dispensing container and mixed liquor is transferred in reaction pot after 5 minutes, slowly turn on agitator, stir 60 minutes at once; 20 parts of ethanol of weighing mix with 0.2 part of nitric acid again, and transfer to rapidly in reaction pot, again slowly start agitator, and open the thermostatted water system reaction pot is heated, and maintain the temperature at 40 ℃, react 150 minutes; Stop heating after having reacted, and constantly stir, be cooled to room temperature, obtain inertia silica supports solution.
2. the preparation of high valence state metal oxide and salt and carrier mixed solution:
By 40 parts of potassium permanganate, the ferric sulfate of 10 parts, 0.1 the titanium dioxide of part, 0.5 part zinc carbonate and 2 parts of ammonium metavanadates with after the ammonium ceric nitrate of 15 parts mixes, add water according to the ratio of 1:30 and be configured to solution, and add 1% salpeter solution acidifying, fully stir, after solution-stabilized, inertia silica supports solution slowly added and be stirred to evenly.
3. the preparation of lower valency metal oxide and saline solution and alkaline solution:
The manganese nitrates of 80 parts are mixed with to the aqueous solution that mass fraction is 50%; By 25 parts of potassium hydroxide, according to 1:10, be mixed with alkaline aqueous solution.
4. the preparation of the presoma of multimetallic catalytic composite and finished product:
Dropwise add the manganese nitrate solution and the sodium hydroxide solution that prepare in mixed solution, solution is adjusted to neutrality (PH is 7), standing, suction filtration, obtain the presoma of composite catalyst, presoma is fully dried under 120 ℃ of conditions, and roasting 5 hours in the Muffle furnace of 300 ℃ afterwards, obtain the poly-metal deoxide composite catalyst containing carrier.
embodiment bis-
Described carrier is powder active carbon, and described poly-metal deoxide is that Mn oxide, ferriferous oxide, zinc oxide, titanium oxide, barium oxide, cerium oxide are by the composite mixture obtained.
1. the preparation of powder active carbon carrier suspension:
Get 20g specific area>=1000m
2/ g, granularity are the beaker that 300 purpose cocos active carbon powder are put into 1000ml, add 800ml distilled water, and mechanical agitation is after 0.5 hour, with ultrasonic wave, disperse 0.5 hour again, 5 times so repeatedly, uniform and stable to suspension, obtain powder active carbon carrier suspension.
2. the preparation of high valence state metal oxide and salt and carrier mixed solution:
By 40 parts of potassium permanganate, the ferric nitrate of 15 parts, 0.2 the titanium dioxide of part, 0.1 part zinc carbonate and 3 parts of ammonium metavanadates with after the ammonium paratungstate of 5 parts mixes, proportional arrangement according to 1:50 becomes the aqueous solution, and adds 0.1% salpeter solution acidifying, fully stirs, after solution-stabilized, inertia silica supports solution slowly added and be stirred to evenly.
3. the preparation of lower valency metal oxide and saline solution and alkaline solution:
The manganese nitrates of 90 parts are mixed with to the aqueous solution that mass fraction is 20%; By 20 parts of NaOH, according to 1:15, be mixed with alkaline aqueous solution.
4. the preparation of the presoma of multimetallic catalytic composite and finished product:
Dropwise add the manganese nitrate solution and the sodium hydroxide solution that prepare in mixed solution, after solution is adjusted to neutrality (PH is 7), standing, suction filtration, obtain the presoma of composite catalyst, presoma is fully dried under 80 ℃ of conditions, and roasting 2 hours in the Muffle furnace of 500 ℃ afterwards, obtain the poly-metal deoxide composite catalyst containing carrier.
Claims (10)
1. one kind is removed the formaldehyde composite catalyst, it is characterized in that, described catalyst is to take inert substance as carrier, after the load poly-metal deoxide, is prepared from.
2. according to claim 1 a kind of except the formaldehyde composite catalyst, it is characterized in that, described inert substance is one or more the mixture in silica, powder active carbon, active carbon short fiber, inertia ore or inertia organic polymer.
3. according to claim 1 a kind of except the formaldehyde composite catalyst, it is characterized in that, described poly-metal deoxide is by the catalytic decomposition component and the auxiliary catalysis component is composite forms, and described composite coefficient is 10:1 ~ 100:1.
4. according to claim 3 a kind of except the formaldehyde composite catalyst, it is characterized in that, described catalytic decomposition component is any two or more the mixture in Mn oxide, ferriferous oxide, Cu oxide, zinc oxide, titanium oxide or silver oxide.
5. according to claim 3 a kind of except the formaldehyde composite catalyst, it is characterized in that, described auxiliary catalysis component is any one or a few the mixture in barium oxide, nickel oxide, tungsten oxide, molybdenum oxide, cerium oxide or cobalt/cobalt oxide.
6. according to claim 4 a kind of except the formaldehyde composite catalyst, it is characterized in that the mixture that described catalytic decomposition component is Mn oxide, ferriferous oxide, zinc oxide and titanium oxide.
7. according to claim 5 a kind of except the formaldehyde composite catalyst, it is characterized in that, described auxiliary catalysis group is one or more the mixture in barium oxide, tungsten oxide or cerium oxide.
8. the preparation method except the formaldehyde composite catalyst, is characterized in that, it mainly comprises the following steps:
The preparation of carrier;
Prepare high valence state metal oxide and saline solution thereof, and it is mixed with carrier;
Preparation lower valency metal oxide and saline solution and alkaline solution;
By step 3 at a middle or low price state metal oxide and saline solution and alkaline solution all dropwise add in the mixed liquor after step 2, the pH value of mixed liquor is adjusted to 8 and stops, standing, suction filtration, obtain the presoma of composite catalyst;
The presoma of composite catalyst is fully dried to roasting in Muffle furnace;
Finished product.
9. a kind of preparation method except the formaldehyde composite catalyst according to Claim 8, is characterized in that, described carrier is one or more the mixture in silica, powder active carbon, active carbon short fiber, inertia ore or inertia organic polymer.
10. a kind of preparation method except the formaldehyde composite catalyst according to Claim 8, is characterized in that, in step 5, bake out temperature is 80 ~ 150 degrees centigrade, and the sintering temperature of described Muffle furnace is 300 ~ 500 degrees centigrade, and roasting time is 2 ~ 5 hours.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104190386A (en) * | 2014-08-19 | 2014-12-10 | 桐乡市健民过滤材料有限公司 | Spherical filter material and preparation method thereof |
| CN104324732A (en) * | 2014-11-06 | 2015-02-04 | 山西新华化工有限责任公司 | Preparation method of activated carbon for removing formaldehyde |
| CN104353417A (en) * | 2014-11-06 | 2015-02-18 | 山西新华化工有限责任公司 | Activated carbon capable of removing formaldehyde |
| CN105080615A (en) * | 2015-07-29 | 2015-11-25 | 安徽科浦环保科技有限公司 | Adsorption catalyst capable of removing formaldehyde quickly and preparing method thereof |
| CN105126842A (en) * | 2015-07-29 | 2015-12-09 | 安徽科浦环保科技有限公司 | Preparation method of formaldehyde-eliminating adsorption catalyst |
| CN105478134A (en) * | 2014-09-19 | 2016-04-13 | 合众（佛山）化工有限公司 | Applicable load-type catalyst for purifying air at room temperature |
| CN106238065A (en) * | 2016-07-08 | 2016-12-21 | 宁波钛安新材料科技有限公司 | A kind of composite catalyst being catalyzed Formaldehyde decomposition and preparation method thereof |
| CN106622260A (en) * | 2016-12-09 | 2017-05-10 | 湖北工业大学 | Preparation method and application of catalyst for treating low-concentration formaldehyde wastewater |
| CN108837606A (en) * | 2018-06-07 | 2018-11-20 | 广东美的环境电器制造有限公司 | Air purification filter core and preparation method thereof |
| CN110560051A (en) * | 2019-09-26 | 2019-12-13 | 塞文科技(上海)有限公司 | Titanium dioxide modified activated carbon supported silver monatomic catalyst and application thereof in formaldehyde oxidation |
| CN111514883A (en) * | 2019-08-30 | 2020-08-11 | 南京林业大学 | Preparation method of carbon-based catalyst for indoor air purification |
| CN112473666A (en) * | 2020-11-17 | 2021-03-12 | 上海应用技术大学 | Catalyst for low-temperature catalytic oxidation of formaldehyde and preparation method and application thereof |
| CN112516785A (en) * | 2019-09-18 | 2021-03-19 | 无锡风正科技有限公司 | Preparation method of industrial TVOC (total volatile organic compound) removing filter material |
| CN113441152A (en) * | 2021-07-02 | 2021-09-28 | 珠海格力电器股份有限公司 | Catalyst and preparation method thereof |
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Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104190386A (en) * | 2014-08-19 | 2014-12-10 | 桐乡市健民过滤材料有限公司 | Spherical filter material and preparation method thereof |
| CN105478134A (en) * | 2014-09-19 | 2016-04-13 | 合众（佛山）化工有限公司 | Applicable load-type catalyst for purifying air at room temperature |
| CN105478134B (en) * | 2014-09-19 | 2017-12-29 | 合众（佛山）化工有限公司 | A kind of applicability loaded catalyst for purifying air at normal temperatures |
| CN104324732A (en) * | 2014-11-06 | 2015-02-04 | 山西新华化工有限责任公司 | Preparation method of activated carbon for removing formaldehyde |
| CN104353417A (en) * | 2014-11-06 | 2015-02-18 | 山西新华化工有限责任公司 | Activated carbon capable of removing formaldehyde |
| CN104353417B (en) * | 2014-11-06 | 2016-08-17 | 山西新华化工有限责任公司 | Remove formaldehyde activity charcoal |
| CN105080615A (en) * | 2015-07-29 | 2015-11-25 | 安徽科浦环保科技有限公司 | Adsorption catalyst capable of removing formaldehyde quickly and preparing method thereof |
| CN105126842A (en) * | 2015-07-29 | 2015-12-09 | 安徽科浦环保科技有限公司 | Preparation method of formaldehyde-eliminating adsorption catalyst |
| CN106238065B (en) * | 2016-07-08 | 2018-10-16 | 宁波钛安新材料科技有限公司 | A kind of composite catalyst and preparation method thereof of catalysis Formaldehyde decomposition |
| CN106238065A (en) * | 2016-07-08 | 2016-12-21 | 宁波钛安新材料科技有限公司 | A kind of composite catalyst being catalyzed Formaldehyde decomposition and preparation method thereof |
| CN106622260A (en) * | 2016-12-09 | 2017-05-10 | 湖北工业大学 | Preparation method and application of catalyst for treating low-concentration formaldehyde wastewater |
| CN106622260B (en) * | 2016-12-09 | 2019-06-18 | 湖北工业大学 | A kind of preparation method and application handling low concentration formaldehyde waste water catalyst |
| CN108837606A (en) * | 2018-06-07 | 2018-11-20 | 广东美的环境电器制造有限公司 | Air purification filter core and preparation method thereof |
| CN111514883A (en) * | 2019-08-30 | 2020-08-11 | 南京林业大学 | Preparation method of carbon-based catalyst for indoor air purification |
| CN112516785A (en) * | 2019-09-18 | 2021-03-19 | 无锡风正科技有限公司 | Preparation method of industrial TVOC (total volatile organic compound) removing filter material |
| CN110560051A (en) * | 2019-09-26 | 2019-12-13 | 塞文科技(上海)有限公司 | Titanium dioxide modified activated carbon supported silver monatomic catalyst and application thereof in formaldehyde oxidation |
| CN112473666A (en) * | 2020-11-17 | 2021-03-12 | 上海应用技术大学 | Catalyst for low-temperature catalytic oxidation of formaldehyde and preparation method and application thereof |
| CN113441152A (en) * | 2021-07-02 | 2021-09-28 | 珠海格力电器股份有限公司 | Catalyst and preparation method thereof |
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