CN106423105A - Formaldehyde adsorbent and preparation method thereof - Google Patents
Formaldehyde adsorbent and preparation method thereof Download PDFInfo
- Publication number
- CN106423105A CN106423105A CN201611195620.0A CN201611195620A CN106423105A CN 106423105 A CN106423105 A CN 106423105A CN 201611195620 A CN201611195620 A CN 201611195620A CN 106423105 A CN106423105 A CN 106423105A
- Authority
- CN
- China
- Prior art keywords
- consumption
- preparation
- meerschaum
- weight portion
- formaldehyde adsorbent
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/0203—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising compounds of metals not provided for in B01J20/04
- B01J20/0233—Compounds of Cu, Ag, Au
- B01J20/0237—Compounds of Cu
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
- B01J20/08—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04 comprising aluminium oxide or hydroxide; comprising bauxite
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/14—Diatomaceous earth
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/16—Alumino-silicates
- B01J20/165—Natural alumino-silicates, e.g. zeolites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Dispersion Chemistry (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a formaldehyde adsorbent and a preparation method thereof; the preparation method comprises: soaking sepiolite in copper sulfate solution, and filtering to obtain modified sepiolite; mixing the modified sepiolite, zeolite, diatomite, polyacrylamide, alumina and water, dewatering, and pressing to obtain filter cake M; drying the filter cake M, and rolling into powder that is the formaldehyde adsorbent; the problem that a common formaldehyde adsorbent has insignificant removal effect and easily deteriorates after long-term storage is solved.
Description
Technical field
The present invention relates to adsorbent, in particular it relates to formaldehyde adsorbent and preparation method thereof.
Background technology
Substantial amounts of formaldehyde is often contained, the main harm of formaldehyde shows as to skin in current finishing material or finished product furniture
The stimulation of skin mucosa, when formaldehyde reaches finite concentration indoors, people just has sense of discomfort.More than 0.08m3Concentration of formaldehyde can
Cause furious, ophthalmic pruritus, throat discomfort or pain, hoarseness, sneeze, uncomfortable in chest, asthma, dermatitis etc., newly-decorated room formaldehyde
Content is higher, is the main inducing of numerous diseases, therefore, how to remove formaldehyde and is increasingly paid close attention to by people.Commonly
Formaldehyde adsorbent removal effect inconspicuous, and apt to deteriorate after long storage time.
Therefore it provides a kind of removal efficiency is higher, and the formaldehyde adsorbent that is unlikely to deteriorate after long storage time and its preparation
Method is the problem of urgent need to resolve of the present invention.
Content of the invention
It is an object of the invention to provide a kind of formaldehyde adsorbent and preparation method thereof, solve common formaldehyde adsorbent
Removal effect is inconspicuous, and problem apt to deteriorate after long storage time.
To achieve these goals, the invention provides a kind of preparation method of formaldehyde adsorbent, described preparation method bag
Include：
(1) meerschaum is immersed in copper-bath, after filtration, obtains modified meerschaum；
(2) it is dehydrated after the mixing of modified meerschaum, zeolite, kieselguhr, polyacrylamide, aluminium oxide and water, and pressed
Make filter cake M；
(3) described filter cake M is dried, and crushed into powder, that is, obtain described formaldehyde adsorbent；
With respect to the meerschaum of 100 weight portions, the consumption of described zeolite is 10-20 weight portion, described diatomaceous consumption
For 15-35 weight portion, the consumption of described polyacrylamide is 5-12 weight portion, and the consumption of described aluminium oxide is 2-8 weight portion, institute
The consumption stating water is 40-80 weight portion.
Present invention also offers a kind of formaldehyde adsorbent, described formaldehyde adsorbent is obtained by above-mentioned preparation method.
According to technique scheme, the invention provides a kind of formaldehyde adsorbent and preparation method thereof, the method include by
Meerschaum is immersed in copper-bath, obtains modified meerschaum after filtration；By modified meerschaum, zeolite, kieselguhr, polypropylene
It is dehydrated after amide, aluminium oxide and water mixing, and be pressed into filter cake M；Described filter cake M is dried, and crushed into powder, obtain final product
To described formaldehyde adsorbent, by the synergism between each raw material so that prepared formaldehyde adsorbent possesses excellent absorption
Formaldehyde ability, and undergo no deterioration after long storage time, the meerschaum adopting in raw material has extremely strong absorption, decolouring and dispersion etc.
Performance, meerschaum itself is to NH3、Cl2、H2S、SO2, HCl and Cl2Just there is extremely strong adsorptivity, using meerschaum as adsorbent
Raw material, there is the advantages of reduction production cost, non-secondary pollution, the zeolite particularly possessing adsorption function with other, diatom
The raw materials such as soil use cooperatively, and go formaldehyde better.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Specific embodiment
Hereinafter the specific embodiment of the present invention is described in detail.It should be appreciated that it is described herein concrete
Embodiment is merely to illustrate and explains the present invention, is not limited to the present invention.
The invention provides a kind of preparation method of formaldehyde adsorbent, described preparation method includes：
(1) meerschaum is immersed in copper-bath, after filtration, obtains modified meerschaum；
(2) it is dehydrated after the mixing of modified meerschaum, zeolite, kieselguhr, polyacrylamide, aluminium oxide and water, and pressed
Make filter cake M；
(3) described filter cake M is dried, and crushed into powder, that is, obtain described formaldehyde adsorbent；
With respect to the meerschaum of 100 weight portions, the consumption of described zeolite is 10-20 weight portion, described diatomaceous consumption
For 15-35 weight portion, the consumption of described polyacrylamide is 5-12 weight portion, and the consumption of described aluminium oxide is 2-8 weight portion, institute
The consumption stating water is 40-80 weight portion.
So that the formaldehyde adsorbent being obtained possesses more excellent formaldehyde adsorption effect, a kind of preferred in the present invention
Embodiment in, with respect to the meerschaum of 100 weight portions, the consumption of described zeolite is 13-17 weight portion, described diatomaceous
Consumption is 20-28 weight portion, and the consumption of described polyacrylamide is 8-10 weight portion, and the consumption of described aluminium oxide is 4-6 weight
Part, the consumption of described water is 60-70 weight portion.
The present invention one kind preferred embodiment in, the granularity of described meerschaum is 100-200 mesh, meerschaum particle diameter
Size determine its specific surface area and absorbability, rationally control the granularity of meerschaum can effectively lift the absorption of meerschaum
Effect.
So that the formaldehyde adsorbent being obtained possesses more excellent formaldehyde adsorption effect, a kind of preferred in the present invention
Embodiment in, described diatomaceous Mohs' hardness be 1-1.5.
In order to effectively remove the moisture in filter cake M, the present invention one kind preferred embodiment in, institute in step (2)
State dry temperature and be 150-300 DEG C, the time of described drying is 30-50min.
If the formaldehyde adsorbent being obtained contains more moisture can affect its storing performance, long storage time is apt to deteriorate,
So in order to prevent from containing higher moisture in filter cake M, in step (2), the dried moisture content of filter cake M is 5-10%.
So that the formaldehyde adsorbent being obtained possesses more excellent formaldehyde adsorption effect, a kind of preferred in the present invention
Embodiment in, the particle diameter of described formaldehyde adsorbent is 0.8-1.5mm.
Present invention also offers a kind of formaldehyde adsorbent, described formaldehyde adsorbent is obtained by above-mentioned preparation method.
Hereinafter will be described the present invention by embodiment.In following examples, meerschaum, zeolite and kieselguhr
The commercially available product providing for Wei Cheng mining industry company limited, wherein, the granularity of meerschaum is 100-200 mesh, diatomaceous Mohs' hardness
For 1-1.5, polyacrylamide and aluminium oxide are conventional commercial product.
Embodiment 1
Meerschaum is immersed in copper-bath, after filtration, obtains modified meerschaum；By 100g modified meerschaum, 13g
It is dehydrated after zeolite, 20g kieselguhr, 8g polyacrylamide, 4g aluminium oxide and the mixing of 60g water, and be pressed into filter cake M；By institute
State filter cake M to be dried (temperature being dried is 150 DEG C, and the time being dried is 30min), and crushed into powder (particle diameter is 0.8mm), that is,
Obtain described formaldehyde adsorbent A1.
Embodiment 2
Meerschaum is immersed in copper-bath, after filtration, obtains modified meerschaum；By 100g modified meerschaum, 17g
It is dehydrated after zeolite, 28g kieselguhr, 10g polyacrylamide, 6g aluminium oxide and the mixing of 70g water, and be pressed into filter cake M；By institute
State filter cake M to be dried (temperature being dried is 300 DEG C, and the time being dried is 50min), and crushed into powder (particle diameter is 1.2mm), that is,
Obtain described formaldehyde adsorbent A2.
Embodiment 3
Meerschaum is immersed in copper-bath, after filtration, obtains modified meerschaum；By 100g modified meerschaum, 15g
It is dehydrated after zeolite, 24g kieselguhr, 9g polyacrylamide, 5g aluminium oxide and the mixing of 65g water, and be pressed into filter cake M；By institute
State filter cake M to be dried (temperature being dried is 200 DEG C, and the time being dried is 40min), and crushed into powder (particle diameter is 1.5mm), that is,
Obtain described formaldehyde adsorbent A3.
Embodiment 4
Method according to embodiment 1 is prepared, and except for the difference that, with respect to 100g meerschaum, the consumption of described zeolite is
10g, described diatomaceous consumption is 15g, and the consumption of described polyacrylamide is 5g, and the consumption of described aluminium oxide is 2g, described
The consumption of water is 40g, obtains described formaldehyde adsorbent A4.
Embodiment 5
Method according to embodiment 1 is prepared, and except for the difference that, with respect to 100g meerschaum, the consumption of described zeolite is
20g, described diatomaceous consumption is 35g, and the consumption of described polyacrylamide is 12g, and the consumption of described aluminium oxide is 8g, described
The consumption of water is 80g, obtains described formaldehyde adsorbent A5.
Comparative example 1
Method according to embodiment 1 is prepared, and except for the difference that, does not contain zeolite in raw material, obtains described formaldehyde absorbing
Agent D1.
Comparative example 2
Method according to embodiment 1 is prepared, and except for the difference that, does not contain kieselguhr in raw material, obtains described formaldehyde and inhales
Attached dose of D2.
Comparative example 3
Method according to embodiment 1 is prepared, and except for the difference that, does not contain meerschaum in raw material, obtains described formaldehyde and inhales
Attached dose of D3.
Test case
Formaldehyde adsorbent A1-A5 and the adsorption rate of D1-D3 PARA FORMALDEHYDE PRILLS(91,95) that detection is obtained, and divide again behind 30 days, 60 days
Do not detect its adsorption rate, detection structure is shown in Table 1.
Table 1
The clearance that can be seen that the formaldehyde adsorbent being obtained within the scope of the present invention by upper table data is higher, and
The clearance of the formaldehyde adsorbent being obtained outside the scope of the invention is relatively low, and after 30 days and 60 days, the absorption of formaldehyde adsorbent
Rate is more stable, the problem significantly declining, and meanwhile, the formaldehyde adsorbent being obtained in currently preferred scope goes
Except rate is more excellent.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, multiple simple variant can be carried out to technical scheme, this
A little simple variant belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned specific embodiment, in not lance
In the case of shield, can be combined by any suitable means, in order to avoid unnecessary repetition, the present invention to various can
The compound mode of energy no longer separately illustrates.
Additionally, combination in any can also be carried out between the various different embodiment of the present invention, as long as it is without prejudice to this
The thought of invention, it equally should be considered as content disclosed in this invention.
Claims (8)
1. a kind of preparation method of formaldehyde adsorbent is it is characterised in that described preparation method includes：
(1) meerschaum is immersed in copper-bath, after filtration, obtains modified meerschaum；
(2) it is dehydrated after the mixing of modified meerschaum, zeolite, kieselguhr, polyacrylamide, aluminium oxide and water, and be pressed into
Filter cake M；
(3) described filter cake M is dried, and crushed into powder, that is, obtain described formaldehyde adsorbent；
With respect to the meerschaum of 100 weight portions, the consumption of described zeolite is 10-20 weight portion, and described diatomaceous consumption is 15-
35 weight portions, the consumption of described polyacrylamide is 5-12 weight portion, and the consumption of described aluminium oxide is 2-8 weight portion, described water
Consumption be 40-80 weight portion.
2. preparation method according to claim 1 it is characterised in that with respect to 100 weight portions meerschaum, described zeolite
Consumption be 13-17 weight portion, described diatomaceous consumption is 20-28 weight portion, and the consumption of described polyacrylamide is 8-10
Weight portion, the consumption of described aluminium oxide is 4-6 weight portion, and the consumption of described water is 60-70 weight portion.
3. preparation method according to claim 1 and 2 is it is characterised in that the granularity of described meerschaum is 100-200 mesh.
4. preparation method according to claim 1 and 2 is it is characterised in that described diatomaceous Mohs' hardness is 1-1.5.
5. preparation method according to claim 1 is it is characterised in that the temperature being dried described in step (3) is 150-300
DEG C, the time of described drying is 30-50min.
6. preparation method according to claim 1 it is characterised in that in step (3) the dried moisture content of filter cake M be 5-
10 weight %.
7. preparation method according to claim 1 is it is characterised in that the particle diameter of described formaldehyde adsorbent is 0.8-1.5mm.
8. a kind of formaldehyde adsorbent is it is characterised in that system described in any one in claim 1-7 for the described formaldehyde adsorbent
Preparation Method is obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195620.0A CN106423105A (en) | 2016-12-22 | 2016-12-22 | Formaldehyde adsorbent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611195620.0A CN106423105A (en) | 2016-12-22 | 2016-12-22 | Formaldehyde adsorbent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106423105A true CN106423105A (en) | 2017-02-22 |
Family
ID=58215763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611195620.0A Pending CN106423105A (en) | 2016-12-22 | 2016-12-22 | Formaldehyde adsorbent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106423105A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111013529A (en) * | 2019-11-29 | 2020-04-17 | 四川建筑职业技术学院 | Recyclable indoor air purification material and preparation method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513579A (en) * | 2003-08-13 | 2004-07-21 | 河北科技大学 | Adsorption absorption reaction type formaldehyde eliminating agent |
| CN101623621A (en) * | 2009-07-29 | 2010-01-13 | 傅桂云 | Adsorbing material for effectively adsorbing formaldehyde and other harmful substances in air |
| CN101658687A (en) * | 2008-08-28 | 2010-03-03 | 北京玉佳明三态离子科学研究院有限公司 | Formula of nontoxic efficient formaldehyde eliminating solution and production method thereof |
| CN103285812A (en) * | 2013-05-29 | 2013-09-11 | 浙江安南炭业科技有限公司 | Humidifying and purifying material and preparation method thereof |
| CN105833842A (en) * | 2015-01-13 | 2016-08-10 | 江苏瑞丰科技实业有限公司 | Granular non-noble-metal efficient integrated air purification composite material |
| CN106178818A (en) * | 2016-08-19 | 2016-12-07 | 山东乐康电器科技有限公司 | A kind of fragrance, anophelifuge air purification filter material and processing technology thereof |
-
2016
- 2016-12-22 CN CN201611195620.0A patent/CN106423105A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1513579A (en) * | 2003-08-13 | 2004-07-21 | 河北科技大学 | Adsorption absorption reaction type formaldehyde eliminating agent |
| CN101658687A (en) * | 2008-08-28 | 2010-03-03 | 北京玉佳明三态离子科学研究院有限公司 | Formula of nontoxic efficient formaldehyde eliminating solution and production method thereof |
| CN101623621A (en) * | 2009-07-29 | 2010-01-13 | 傅桂云 | Adsorbing material for effectively adsorbing formaldehyde and other harmful substances in air |
| CN103285812A (en) * | 2013-05-29 | 2013-09-11 | 浙江安南炭业科技有限公司 | Humidifying and purifying material and preparation method thereof |
| CN105833842A (en) * | 2015-01-13 | 2016-08-10 | 江苏瑞丰科技实业有限公司 | Granular non-noble-metal efficient integrated air purification composite material |
| CN106178818A (en) * | 2016-08-19 | 2016-12-07 | 山东乐康电器科技有限公司 | A kind of fragrance, anophelifuge air purification filter material and processing technology thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郑昌琼等: "《简明材料词典》", 30 April 2002, 科学出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111013529A (en) * | 2019-11-29 | 2020-04-17 | 四川建筑职业技术学院 | Recyclable indoor air purification material and preparation method thereof |
| CN111013529B (en) * | 2019-11-29 | 2023-04-07 | 四川建筑职业技术学院 | Recyclable indoor air purification material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103623780B (en) | A kind of purification adsorption for sterilization material and application thereof | |
| CN105249567A (en) | Disposable non-woven mask | |
| CN107175070A (en) | It is a kind of efficient except formaldehyde de-tastes air cleaning adsorbent and preparation method | |
| CN101935190A (en) | Washable ecologic wall material capable of decomposing formaldehyde | |
| CN104605534B (en) | A kind of Multifunctional gauze mask and production technology thereof | |
| CN106540665A (en) | A kind of formaldehyde adsorbent | |
| CN104496334A (en) | Antimicrobial radiation-preventing formaldehyde-degrading ecological diatom wall material | |
| CN106423104A (en) | Formaldehyde adsorbent and preparation method thereof | |
| CN103285812A (en) | Humidifying and purifying material and preparation method thereof | |
| CN106423105A (en) | Formaldehyde adsorbent and preparation method thereof | |
| CN107159150A (en) | A kind of indoor air purification article and preparation method thereof | |
| CN106120314A (en) | A kind of fabric antimildew and antibacterial agent | |
| CN105152680A (en) | Building material for air purification | |
| CN102972864B (en) | Preparation method of catalyst for selectively reducing released amount of hydrogen cyanide in mainstream smoke of cigarette | |
| CN104174126A (en) | Carbon fiber ultra-filtration anti-bacteria respirator and preparation method thereof | |
| CN103212366A (en) | Modified montmorillonite filter additive containing alumina or/and hydroxy aluminium iron and application | |
| CN106423067A (en) | Formaldehyde adsorbent and preparation method thereof | |
| CN103721367A (en) | Composite type protective material for comprehensive toxicant prevention | |
| CN103721366A (en) | Preparation method of composite type protective material for comprehensive toxicant prevention | |
| CN103007891A (en) | Method for preparing air purification material | |
| CN205591789U (en) | Formaldehyde screen window removes dust | |
| CN108741304A (en) | haze protective mask | |
| CN103962101B (en) | A kind of indoor air cleaner filtrate | |
| CN204767843U (en) | Get rid of indoor air pollution's complex function filter screen | |
| CN105310829A (en) | Novel sanitary towel with active carbon anti-bacterial non-woven cloth layer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170222 |