CN108554383A - A kind of room temperature formaldehyde adsorbent and its preparation method and application - Google Patents
A kind of room temperature formaldehyde adsorbent and its preparation method and application Download PDFInfo
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- CN108554383A CN108554383A CN201810250922.6A CN201810250922A CN108554383A CN 108554383 A CN108554383 A CN 108554383A CN 201810250922 A CN201810250922 A CN 201810250922A CN 108554383 A CN108554383 A CN 108554383A
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- 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
- B01J20/20—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising free carbon; comprising carbon obtained by carbonising processes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
- B01D46/0036—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions by adsorption or absorption
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- 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
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- 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
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- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/32—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating
- B01J20/3231—Impregnating or coating ; Solid sorbent compositions obtained from processes involving impregnating or coating characterised by the coating or impregnating layer
- B01J20/3242—Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group
- B01J20/3244—Non-macromolecular compounds
- B01J20/3246—Non-macromolecular compounds having a well defined chemical structure
- B01J20/3248—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
- B01J20/3255—Non-macromolecular compounds having a well defined chemical structure the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such comprising a cyclic structure containing at least one of the heteroatoms nitrogen, oxygen or sulfur, e.g. heterocyclic or heteroaromatic structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2259/00—Type of treatment
- B01D2259/45—Gas separation or purification devices adapted for specific applications
- B01D2259/4508—Gas separation or purification devices adapted for specific applications for cleaning air in buildings
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Abstract
The present invention provides a kind of room temperature formaldehyde adsorbent, including carrier and activating agent, carrier is activated carbon, and activating agent is 4 amino, 1,2 catechol hydrochloride, and the preparation method of the adsorbent includes：Measure the water adsorption volume of absorbent charcoal carrier, weigh activated carbon, 1,2 catechol hydrochloride of water and 4 amino is weighed, 4 amino 1 are prepared, 2 catechol HCI solutions, 4 amino, 1, the 2 catechol HCI solution of preparation is added in step activated carbon, is stood after stirring, it is finally toasted at 80~120 DEG C, the present invention also provides application of the above-mentioned adsorbent in strainer.Room temperature formaldehyde adsorbent provided by the invention fully utilizes the physisorption of activated carbon and the chemical reaction effect of activating agent, production method is simple and practicable, and raw material is cheap and easy to get, and adsorption capacity is up to 30mg/g, it is 10 times of commercial formaldehyde absorbing activated carbon, there is excellent formaldehyde adsorption performance.
Description
Technical field
The invention belongs to treating indoor air pollution technology art field, it is related to a kind of room temperature formaldehyde adsorbent and preparation method thereof
And application.
Background technology
Indoor formaldehyde is well known the harm of human body, it is one of major pollutants of room air pollution, tool
The features such as toxic big, source is wide and release time is long, the influence to health include that allotriosmia, allergy, lung function are different
Often, immunologic dysfunction, stimulation central nervous system is impacted and damaging cells in inhereditary material, it is true by the World Health Organization
It is set to carcinogenic and teratogen, China《Indoor Air Quality standards GB/T18883-2002》Provide that the formaldehyde in indoor air is dense
Degree cannot be more than 0.10mg/m3.Existing formaldehyde treated technology mainly has physisorphtion, chemical reaction method and photocatalysis technology
Deng.Physisorphtion the shortcomings of there are adsorption saturation and desorptions；Chemical reaction method uses the longevity in the presence of there may be secondary pollutions
Order the shortcomings of limited；Photocatalysis technology usually requires ultraviolet illumination, of high cost, and ultraviolet light is to indoor people and object
There are insecurity.In order to remove the formaldehyde in room air, many units and research staff develop it is a series of can be net
Change the reagent with formaldehyde adsorption.
CN101468305 discloses a kind of formaldehyde adsorbent and preparation method, and the formaldehyde adsorbent of the present invention is by matrix
Material, macromolecule organic amine polymer and polyhydric alcohol polymer composition, wherein macromolecule organic amine polymer and polyalcohol are poly-
Close two kinds of components of object and account for the 1~50% of formaldehyde adsorbent, remaining is basis material, preparation method include prepare formaldehyde reactant,
Basis material pretreatment and curing molding, the formaldehyde adsorbent of the invention can make formaldehyde gas in formaldehyde adsorption
Fast enriching generates harmless substance, continues and thoroughly remove first to reach in its surface, concurrent biochemical reaction
The effect of aldehyde, the raw material which uses is nontoxic, harmless, and preparation process is simple, process is easy to control, manufactured first
Aldehyde adsorbent is safe and environment-friendly, non-secondary pollution, however the pretreatment of the invention adsorbent and preparation process are complex.
CN101862638A discloses a kind of formaldehyde adsorbent and preparation method, first prepares hydrogenperoxide steam generator, then hydrogen peroxide is molten
Liquid is added in the container for filling granular active carbon, by stirring and impregnating；Activated carbon after dipping is filtered, dried and dried
Afterwards, obtain that a kind of appearance is loose, abundant expansion, while aperture is further segmented, structure height is flourishing, and specific surface area expands
Formaldehyde adsorbent, the essence of the invention is, by making existing activated carbon more fluffy used in hydrogen peroxide, there is bigger
Specific surface area, to improve the adsorption capacity of activated carbon, however the adsorption capacity of activated carbon itself is limited always.
CN101327424 discloses a kind of formaldehyde adsorbent containing chitosan, its main feature is that by chitosan, manganese dioxide and activated carbon
Uniformly be mixed to prepare powder formaldehyde adsorbent, can also adding citric acid again, squeezed after adding water to be mixed, two sticked in drum
Manganese oxide, rolling even rear dry obtained particle formaldehyde adsorbent can by the absorption of formaldehyde adsorbent of the invention containing chitosan
It is at low cost to greatly reduce the content of formaldehyde gas in space, popularization easy to use, and have powdered and graininess can be on-demand
It selects, however manganese dioxide role and mechanism are unknown in the invention.CN103691411A discloses a kind of poly- containing shell
The formaldehyde adsorbent and preparation method thereof of sugar and beta-cyclodextrin, formaldehyde adsorbent press certain mass ratio by chitosan and beta-cyclodextrin
It is made, preparation method includes：It dissolves the chitosan in hydrochloric acid, then is mixed with beta-cyclodextrin solution, is then slowly added dropwise
In glutaraldehyde solution to mixed liquor, and heating stirring mixed liquor under inert gas protection, sodium hydroxide is added in reaction solution
Solution filters after so that product is precipitated, and is washed and is dried in vacuo with acetone after being washed with water to neutrality, the formaldehyde adsorbent knot of the invention
The recognition performance and chitosan adsorption function of cyclodextrin are closed, absorption property is good, property is stablized, and favorable reproducibility, selectivity is good, can
To greatly reduce the content of formaldehyde gas in space, and adsorbent preparation process is simple, at low cost, pollution-free, is suitble to industry
Metaplasia is produced.CN105148856A discloses a kind of material for air purification and preparation method removing formaldehyde, acetaldehyde, acetic acid and ammonia,
Material for air purification carrier is carried out acidification by the invention, and the material for air purification carrier of acidification is made after washing drying, will
Water, hydroxylamine chloride, hexamethylenetetramine, chitosan and orotic acid obtained miscible solution miscible in mass ratio, by the air of acidification
Scavenging material carrier impregnation is reacted in miscible solution, is dried after reaction to get material for air purification, what which provided
Material for air purification has good formaldehyde absorbing effect, especially still has preferable removal effect to the formaldehyde of low concentration,
In addition it also has good removal effect to acetaldehyde, acetic acid and ammonia, however prepares the scavenging material and need to use 4 kinds of reagents,
And the strong acid such as hydrochloric acid, sulfuric acid and nitric acid may be used, preparation process has certain danger, easy tos produce environmental pollution.
In conclusion it is more simplified it is still necessary to develop a kind of preparation process, physical absorption and chemical reaction can be combined one
It rises, PARA FORMALDEHYDE PRILLS(91,95) has the adsorbent of strong catharsis, to effectively solve the problems, such as Formaldehyde Pollution of Indoor Air.
Invention content
To solve problems of the prior art, an object of the present invention is to provide a kind of room temperature formaldehyde adsorbent.
The second object of the present invention is to provide the preparation method of above-mentioned adsorbent.
The third object of the present invention is to provide application of the above-mentioned adsorbent in strainer.
To achieve the above object, the present invention uses following technical scheme：
A kind of room temperature formaldehyde adsorbent, the adsorbent include carrier and activating agent, and the carrier is activated carbon, the work
Property agent be 4- amino -1,2- catechol hydrochlorides.
Preferably, the activated carbon is column-shaped active carbon.
Preferably, the specific surface area of the activated carbon is 900~1300m2/ g, the weight of the activating agent are the water of carrier
Adsorption volume × (1~25%).
A kind of preparation method of room temperature formaldehyde adsorbent, the preparation method is that：With 4- amino -1,2- catechol hydrochloric acid
It is dried after salt solution impregnation activated carbon.
Preferably, preparation method includes the following steps：
(1) the water adsorption volume of absorbent charcoal carrier, weighs activated carbon needed for measuring；
(2) water is weighed according to the measurement result of step (1), 4- amino -1,2- catechol hydrochlorides is soluble in water, match
4- amino -1,2- catechol HCI solution processed；
(3) activity that step (1) weighs is added in 4- amino -1,2- catechol HCI solutions that step (2) is prepared
In charcoal, stood after stirring；
(4) activated carbon by step (3) processing toasts at 80~120 DEG C.
Preferably, the measurement method of step (1) the water adsorption volume is：After activated carbon adds V1ml water immersions, stirring is equal
It is even, after water suction be saturated after, water is poured out and weigh pour out water volume V2ml, V1-V2 be absorbent charcoal carrier water adsorbent
Product.
Preferably, a concentration of 1~25wt% of step (2) 4- amino -1,2- catechol HCI solution.
Preferably, the time of step (3) described stirring is 10~30min, the time of standing>30min.
Preferably, the standard that step (4) baking terminates is that the content of product moisture is 8~20%.
A kind of application of above-mentioned room temperature formaldehyde adsorbent in air filter screen.
Description of the drawings
Fig. 1 is concentration of formaldehyde versus time curve.
Beneficial effects of the present invention
1, room temperature formaldehyde adsorbent provided by the invention fully utilizes the physisorption and activating agent of activated carbon
Effect is chemically reacted, production method is simple and practicable, and raw material is cheap and easy to get；
2, formaldehyde adsorption property is good under formaldehyde adsorbent normal temperature condition provided by the invention, and adsorption capacity is up to 30mg/
G is 10 times of commercial formaldehyde absorbing activated carbon, has excellent compared with the adsorption capacity of existing commercial formaldehyde absorbing activated carbon
Formaldehyde adsorption performance；
3, there is the load of room temperature formaldehyde adsorbent and the X nets that prepared by the present invention higher adsorption rate, the rate of adsorption to be
2~3 times of commercial active carbon net.
Specific implementation mode
The following is specific embodiments of the present invention, and is described with reference to the drawings and is further retouched to technical scheme of the present invention work
It states, however, the present invention is not limited to these examples.
Embodiment 1
The method for preparing room temperature formaldehyde adsorbent, specifically includes following steps：
(1) the water adsorption volume for measuring absorbent charcoal carrier, weighs activated carbon；
(2) according to the measurement result of step (1), water and 4- amino -1,2- catechol hydrochlorides are weighed, prepares 4- ammonia
Base -1,2- catechol HCI solution；
(3) activity that step (1) weighs is added in 4- amino -1,2- catechol HCI solutions that step (2) is prepared
In charcoal, stood after stirring；
(4) activated carbon by step (3) processing toasts at 80~120 DEG C.
The measurement method of step (1) the water adsorption volume is：Activated carbon 100g is weighed, V1ml water is added, V1, which need to be more than, to live
The 10% of property charcoal volume, after activated carbon is totally submerged, stirs evenly, after activated carbon adsorption water saturation, water is poured out and claimed
The volume V2ml, V1-V2 that amount pours out water are the water adsorption volume of 100g activated carbons.
The molten a concentration of 1~25wt% of 4- amino -1,2- catechol hydrochloride in step (2).
The time stirred in step (3) is 10~30min, the time of standing>30min.
The time toasted in step (4) is 1~2h, and when baking, which should tile sample, is unfolded, and the standard that toast end is production
The content of object moisture is 8~20%.
Embodiment 2
The formula of 10 kinds of formaldehyde adsorbents is present embodiments provided, it is specific as shown in table 1：
1 formaldehyde absorbing agent prescription of table is detailed
| Serial number | Activated carbon | 4- amino -1,2- catechol hydrochloride concentrations (wt%) |
| 1 | Column-shaped active carbon (diameter about 1mm) | 1 |
| 2 | Column-shaped active carbon (diameter about 1mm) | 10 |
| 3 | Column-shaped active carbon (diameter about 1mm) | 15 |
| 4 | Column-shaped active carbon (diameter about 1mm) | 25 |
| 5 | Column-shaped active carbon (diameter about 2mm) | 15 |
| 6 | Column-shaped active carbon (diameter about 3mm) | 15 |
| 7 | Granular activated carbon (10-20 mesh) | 15 |
| 8 | Granular activated carbon (20-30 mesh) | 15 |
| 9 | Granular activated carbon (30-60 mesh) | 15 |
| 10 | Powdered Activated Carbon | 15 |
According to 1~10 kind of formula in table 1, the preparation method provided using embodiment 1 is prepared for 10 kinds of reference numeral
Formaldehyde adsorbent, wherein the mixing time in step (3) is 30min, and the time of repose after stirring is 30min, and baking time is
1.5h, baking temperature are 100 DEG C.
Using national standard《GB/T18801-2015 air purifiers》Middle volume is 30m3Experimental cabin measurement be prepared into
The adsorption effect of the 10 kinds of formaldehyde adsorbents and 2 kinds of business formaldehyde absorbing activated carbons that arrive, as shown in table 2 and table 3.
The room temperature filter efficiency of 2 formaldehyde of table
A kind of application of room temperature formaldehyde adsorbent in air filter screen.After room temperature formaldehyde adsorbent is made strainer, according to
National standard《GB/T18801-2015 air purifiers》In phenol reagent process, measure the adsorption capacity of formaldehyde, formaldehyde in container
Concentration versus time curve is as shown in Figure 1.It will be seen from figure 1 that in initial 15min, concentration of formaldehyde declines rapidly,
Then, fall is gradually reduced, until last, concentration of formaldehyde stabilization does not continue to change.10 kinds of formaldehyde adsorbents and 2 kinds of quotient
The adsorption capacity and time of break-through of industry formaldehyde absorbing activated carbon are as shown in table 3.
3 room temperature adsorption capacity of table
| Serial number | Activated carbon | Mass adsorption capacity/(mg/g) |
| 1 | Column-shaped active carbon (diameter about 1mm) | 15 |
| 2 | Column-shaped active carbon (diameter about 1mm) | 28 |
| 3 | Column-shaped active carbon (diameter about 1mm) | 30 |
| 4 | Column-shaped active carbon (diameter about 1mm) | 35 |
| 5 | Column-shaped active carbon (diameter about 2mm) | 30 |
| 6 | Column-shaped active carbon (diameter about 3mm) | 30 |
| 7 | Granular activated carbon (10-20 mesh) | 30 |
| 8 | Granular activated carbon (20-30 mesh) | 30 |
| 9 | Granular activated carbon (30-60 mesh) | 33 |
| 10 | Powdered Activated Carbon | 35 |
| 11 | Commercial formaldehyde absorbing activated carbon A | 12 |
| 12 | Commercial formaldehyde absorbing activated carbon B | 8 |
From table 3 it can be seen that under same volume, the adsorption capacity of formaldehyde adsorbent of the invention is commercial formaldehyde absorbing respectively
2.5 times and 3 times of activated carbon A and B.
Claims (10)
1. a kind of room temperature formaldehyde adsorbent, which is characterized in that the adsorbent includes carrier and activating agent, and the carrier is activity
Charcoal, the activating agent are 4- amino -1,2- catechol hydrochlorides.
2. room temperature formaldehyde adsorbent according to claim 1, which is characterized in that the activated carbon is column-shaped active carbon.
3. room temperature formaldehyde adsorbent according to claim 1, which is characterized in that the specific surface area of the activated carbon is 900
~1300m2/ g, the weight of the activating agent are water adsorption volume × (1~25%) of carrier.
4. a kind of preparation method of the room temperature formaldehyde adsorbent as described in any one of claims 1 to 3, which is characterized in that the system
Preparation Method is：With being dried after 4- amino -1,2- catechol HCI solution Immesion active carbons.
5. the preparation method of room temperature formaldehyde adsorbent according to claim 4, which is characterized in that include the following steps：
(1) the water adsorption volume of absorbent charcoal carrier, weighs activated carbon needed for measuring；
(2) water is weighed according to the measurement result of step (1), 4- amino -1,2- catechol hydrochlorides is soluble in water, prepare 4-
Amino -1,2- catechol HCI solution；
(3) 4- amino -1,2- catechol HCI solutions that step (2) is prepared are added in the activated carbon that step (1) weighs,
It is stood after stirring；
(4) activated carbon by step (3) processing toasts at 80~120 DEG C.
6. the preparation method of room temperature formaldehyde adsorbent according to claim 5, which is characterized in that step (1) water is inhaled
The measurement method of attached volume is：It after activated carbon adds V1ml water immersions, stirs evenly, after water suction is saturated, water is poured out and weighed
The volume V2ml, V1-V2 for pouring out water are the water adsorption volume of absorbent charcoal carrier.
7. the preparation method of room temperature formaldehyde adsorbent according to claim 5, which is characterized in that step (2) the 4- ammonia
A concentration of 1~25wt% of base -1,2- catechol HCI solution.
8. the preparation method of room temperature formaldehyde adsorbent according to claim 5, which is characterized in that step (3) described stirring
Time be 10~30min, the time of standing>30min.
9. the preparation method of room temperature formaldehyde adsorbent according to claim 5, which is characterized in that step (4) described baking
The standard of end is that the content of product moisture is 8~20%.
10. a kind of application of the room temperature formaldehyde adsorbent in air filter screen as described in any one of claims 1 to 3.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109225141A (en) * | 2018-10-19 | 2019-01-18 | 上海纳米技术及应用国家工程研究中心有限公司 | The preparation method and product of the carbon-based room temperature scavenging material of polyfunctional group for formaldehyde removal and application |
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| CN109225141A (en) * | 2018-10-19 | 2019-01-18 | 上海纳米技术及应用国家工程研究中心有限公司 | The preparation method and product of the carbon-based room temperature scavenging material of polyfunctional group for formaldehyde removal and application |
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