CN110026167A - A kind of particulate adsorbent material and preparation method thereof for removing formaldehyde - Google Patents
A kind of particulate adsorbent material and preparation method thereof for removing formaldehyde Download PDFInfo
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- CN110026167A CN110026167A CN201910361558.5A CN201910361558A CN110026167A CN 110026167 A CN110026167 A CN 110026167A CN 201910361558 A CN201910361558 A CN 201910361558A CN 110026167 A CN110026167 A CN 110026167A
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- sodium alginate
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- 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
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- 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
- B01J20/264—Synthetic macromolecular compounds derived from different types of monomers, e.g. linear or branched copolymers, block copolymers, graft copolymers
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- 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
- B01J20/28—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties
- B01J20/28014—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof characterised by their form or physical properties characterised by their form
- B01J20/28016—Particle form
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/20—Organic adsorbents
- B01D2253/202—Polymeric adsorbents
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- 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
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The invention discloses a kind of particulate adsorbent material for removing formaldehyde, the raw material including following parts by weight: 1 part of hydroxy alkyl amine polymer of sodium alginate grafting, activated carbon fibre or 4~6 parts of diatomite.The invention also discloses the methods of preparation particulate adsorbent material, comprising: (1) prepares sodium alginate grafting hydroxy alkyl amine polymer；(2) sodium alginate grafting hydroxy alkyl amine is blended according to parts by weight with activated carbon fibre or diatomite, is granulated the particulate adsorbent material for obtaining removing formaldehyde.The present invention is prepared for the high sodium alginate of PARA FORMALDEHYDE PRILLS(91,95) reactivity as primary raw material using sodium alginate, hydroxy alkyl amine and is grafted hydroxy alkyl amine polymer, then the particulate adsorbent material for removing formaldehyde is further prepared, raw material and preparation process are environmentally protective, safety is without side-effects, will not cause secondary pollution to environment.
Description
Technical field
The present invention relates to particulate adsorbent material and preparation method thereof more particularly to a kind of particulate adsorbent materials for removing formaldehyde
And preparation method thereof.
Background technique
Formaldehyde is poisonous and hazardous chemical substance a kind of colourless but with penetrating odor, since it is widely used to
Chemical industry, timber processing, textile industry etc. and people live closely bound up every aspect, have become and a kind of endanger people
Life and health predominant gas pollutant.Research activities in relation to purifying formaldehyde is relatively more active always, such as publication number
Methyl aldehyde adsorption material disclosed in the Chinese patent applications such as CN108727546A, CN102675574A, CN105148856A has good
Good formaldehyde absorbing effect, however this kind of methyl aldehyde adsorption material needs to use the hazardous chemicals such as formaldehyde, strong acid during the preparation process
Substance, safety is poor, and be easy to cause secondary pollution.
Summary of the invention
Goal of the invention: the object of the present invention is to provide a kind of particulate adsorbent materials and preparation method thereof for removing formaldehyde, should
Material and preparation process are environmentally protective, and safety is without side-effects, will not cause secondary pollution to environment.
Technical solution: the particulate adsorbent material of removing formaldehyde of the invention, the raw material including following parts by weight: alginic acid
1 part of hydroxy alkyl amine polymer of sodium grafting, activated carbon fibre or 4~6 parts of diatomite；The sodium alginate is grafted hydroxy alkyl amine
Monomer structure formula are as follows:
Wherein, the R in the monomer structure formula is alkyl.
Wherein, the mesh number of the diatomite is 100~800 mesh, and the partial size of the particulate adsorbent material is 2~8mm.
Preferably, the alkyl is ethyl, propyl or butyl.
Preferably, hydroxy alkyl amine is aminoethyle alcohol, hydroxypropylamine or hydroxyl butylamine.
The present invention also provides a kind of methods of particulate adsorbent material for preparing above-mentioned removing formaldehyde, comprising the following steps:
(1) sodium alginate is distributed in water, is sufficiently dissolved, filtering obtains supernatant liquor to get pure molten to sodium alginate
Liquid；
(2) by hydroxy alkyl amine and the pure solution of sodium alginate hybrid reaction under alkaline condition, sodium alginate grafting is obtained
Hydroxy alkyl amine polymer solution obtains sodium alginate after dry and is grafted hydroxy alkyl amine polymer；
(3) sodium alginate grafting hydroxy alkyl amine is blended in parts by weight with activated carbon fibre or diatomite, is granulated
To the particulate adsorbent material for removing formaldehyde.
Preferably, provide the alkaline condition alkali be potassium hydroxide, sodium hydroxide, calcium hydroxide or ammonium hydroxide in extremely
Few one kind.
Preferably, purification solvent is added in step (2) the sodium alginate grafting hydroxy alkyl amine polymer solution,
Centrifugation removal supernatant liquor, the sodium alginate after being purified are grafted hydroxy alkyl amine polymer solution.The centrifugal speed is
5000~10000rpm, centrifugation time are 10~30min.
Preferably, purification solvent is ethyl alcohol, propyl alcohol or isopropanol.
Preferably, the drying is to be dried under reduced pressure processing, obtains sodium alginate and is grafted hydroxy alkyl amine polymer.It is described to subtract
The temperature that pressure is dried is 80~110 DEG C, and the time is 2~3h, absolute pressure < 103Pa。
Preferably, the weight of sodium alginate in the alkali, hydroxy alkyl amine and the pure solution of sodium alginate of the alkaline condition is provided
Amount is than being 0.1~0.3:0.2~0.4:1.
Preferably, described to mix hydroxy alkyl amine under alkaline condition with the pure solution of sodium alginate, it flows back 5~24 hours
After be cooled to room temperature, obtain sodium alginate grafting hydroxy alkyl amine polymer solution.
Working principle: sodium hydroxide provides alkaline environment as catalyst, and aminoethyle alcohol is allowed to be easier on attack alginic acid
Hydroxyl group, occur condensation reaction；The chemical reaction that alginic acid and hydroxy alkyl amine are shown below, generate contain-
NH2The sodium alginate of group is grafted hydroxy alkyl amine, wherein-NH2Group can be reacted with formaldehyde.It is being capable of formaldehyde adsorption
Activated carbon fibre is added in sodium alginate grafting hydroxy alkyl amine polymer or diatomite is granulated, and is obtained and is removed formaldehyde
Particulate adsorbent material.
It is the monomer structure formula of alginic acid in formula, in the bracket of left side, centre is the monomer structure formula of hydroxy alkyl amine, right side
The monomer structure formula of hydroxy alkyl amine is grafted in bracket for sodium alginate, R is alkyl.
The utility model has the advantages that compared with prior art, the present invention can achieve the following beneficial effects: (1) based on sodium alginate
Raw material is wanted, it is environmentally protective, and the catalyst, the purification solvent safety that use in preparation process are without side-effects, will not cause to environment
Secondary pollution；(2) alginic acid and the condensation of hydroxy alkyl amine are generated containing a large amount of-NH2The sodium alginate of group is grafted hydroxy alkyl
Amine polymer, PARA FORMALDEHYDE PRILLS(91,95) reactivity are high；(3) it is granulated after adding activated carbon fibre or diatomite, obtains and remove formaldehyde
Particulate adsorbent material, granular material are conducive to the effect of enhancing absorption.
Detailed description of the invention
Fig. 1 is the nuclear magnetic resonance of polymer prepared by embodiment 11H spectrum；
Fig. 2 is the nuclear magnetic resonance of polymer prepared by embodiment 113C spectrum；
Fig. 3 is the nuclear magnetic resonance of polymer prepared by embodiment 11H composes chemical structure ownership figure；
Fig. 4 is the nuclear magnetic resonance of polymer prepared by embodiment 113C composes chemical structure ownership figure.
Specific embodiment
Present invention is further described in detail with specific embodiment with reference to the accompanying drawings of the specification.
The raw materials used in the present invention can be obtained from commercially available, the weight average molecular weight of the sodium alginate that the present invention uses be 5k~
20k Da。
Embodiment 1
A kind of particulate adsorbent material for removing formaldehyde, the raw material including following parts by weight: sodium alginate is grafted hydroxyl second
1 part of amine polymer, 6 parts of activated carbon fibre.
The method for preparing the particulate adsorbent material of above-mentioned removing formaldehyde, comprising the following steps:
1, the sodium alginate powder that 30g weight average molecular weight is 10K Da is distributed in 100mL deionized water, is heated to 75
DEG C and stir 1.5 hours, filtering obtain supernatant liquor, obtain the pure solution of sodium alginate；
2, it weighs the above-mentioned supernatant liquor of 10g and is placed in 100 DEG C, absolute pressure 102It is dried under reduced pressure 2.5h under the conditions of Pa, will obtain
Solid matter quality divided by the quality of weighed supernatant liquor, obtain sodium alginate content；
3, gradually 0.2 part of sodium hydroxide, 0.3 part of aminoethyle alcohol are added in parts by weight and are contained containing 1 part of sodium alginate
In the pure solution of the sodium alginate of amount, reflux is cooled to room temperature after 10 hours, and it is molten to obtain sodium alginate grafting aminoethyle alcohol polymer
Liquid；
4, the ethyl alcohol of 2.5 times of volume ratios is added in above-mentioned sodium alginate grafting aminoethyle alcohol polymer solution, is placed in
20min is handled in the centrifuge of 8000rpm, removes supernatant liquor；Repeated centrifugation 3 times, obtain removal sodium hydroxide and free hydroxyl
The sodium alginate of base ethamine is grafted aminoethyle alcohol solution polymer solution；
5, the sodium alginate grafting aminoethyle alcohol polymer solution after step 4 purification is placed in 100 DEG C, absolute pressure
2X102Under conditions of be dried under reduced pressure 2.5h, obtain sodium alginate and be grafted aminoethyle alcohol polymer；
6,1 part of sodium alginate grafting aminoethyle alcohol polymer is blended with 4 parts of activated carbon fibre in parts by weight, 8X102
Under conditions of be dried under reduced pressure 2h after, be granulated using pelletizer, obtain partial size average out to 6mm removing formaldehyde granular absorption
Material.
Sodium alginate manufactured in the present embodiment grafting aminoethyle alcohol polymer nuclear magnetic resonance spectroscopy and carbon spectrum respectively as Fig. 1,
Shown in Fig. 2, in which: gel chromatography: (H2O column, PMAA-Na standard sample) number-average molecular weight: 8867mol/g, molecular weight distribution:
1.15.To in Fig. 1, Fig. 2 nuclear magnetic resonance spectroscopy and carbon spectrum carry out structure elucidation respectively, respectively as shown in 3, Fig. 4, in which:1HNMR(400MHz,CDCl3) δ ppm:5.41 (m,1H), 4.00 (q,1H), 3.63 (m,4H), 3.49 (m,2H), 3.40 (d,1H),
2.82(t,2H)。13C NMR(100MHz,CDCl3) δ ppm:92.7,78.0,76.2,74.1,73.8,73.5,66.8,41.8.
200g sodium alginate manufactured in the present embodiment is grafted aminoethyle alcohol polymer and removes the granular absorption of formaldehyde
Material is respectively placed in the adsorption effect that PARA FORMALDEHYDE PRILLS(91,95) is tested in standard test case, and test data is respectively as shown in table 1,2:
The adsorption capacity experimental data of 1 sodium alginate of table grafting aminoethyle alcohol polymer PARA FORMALDEHYDE PRILLS(91,95)
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 1 | 3.38 |
| 2 | 5 | 10 | 0.21 |
| 3 | 5 | 20 | 0.08 |
Table 2 removes the adsorption capacity experimental data of the particulate adsorbent material PARA FORMALDEHYDE PRILLS(91,95) of formaldehyde
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 20 | 0.1 |
| 2 | 5 | 20 | 0.06 |
| 3 | 5 | 20 | 0.08 |
| 4 | 5 | 20 | 0.06 |
Embodiment 2
A kind of particulate adsorbent material for removing formaldehyde, the raw material including following parts by weight: sodium alginate is grafted hydroxyl third
4 parts of diatomite of 1 part of amine polymer, 800 mesh numbers.
The method for preparing the particulate adsorbent material of above-mentioned removing formaldehyde, comprising the following steps:
1, the sodium alginate powder that 30g weight average molecular weight is 5K Da is distributed in 100mL deionized water, is heated to 60
DEG C and stir 2 hours, filtering obtain supernatant liquor, obtain the pure solution of sodium alginate；
2, it weighs the above-mentioned supernatant liquor of 10g to be placed in 80 DEG C, be dried under reduced pressure 3h under the conditions of absolute pressure 10Pa, by consolidating for acquisition
The quality of body substance obtains sodium alginate content divided by the quality of weighed supernatant liquor；
3, gradually 0.1 part of potassium hydroxide, 0.4 part of hydroxypropylamine are added in parts by weight and are contained containing 1 part of sodium alginate
In the pure solution of the sodium alginate of amount, reflux is cooled to room temperature after 5 hours, and it is molten to obtain sodium alginate grafting hydroxypropylamine polymer
Liquid；
4, the propyl alcohol of 2 times of volume ratios is added in sodium alginate grafting hydroxypropylamine polymer solution, is placed in 5000rpm
Centrifuge in handle 30min, remove supernatant liquor；, obtain removal potassium hydroxide and free hydroxyl group propylamine repeated centrifugation for 4 times
Sodium alginate is grafted hydroxypropylamine polymer solution；
5, the sodium alginate grafting hydroxypropylamine polymer solution after step 4 purification is placed in 80 DEG C, absolute pressure
9.5X102It is dried under reduced pressure 2h under conditions of Pa, obtains sodium alginate and is grafted hydroxypropylamine polymer；
6,1 part of sodium alginate grafting hydroxy alkyl amine polymer and the diatomite of 5 part of 800 mesh number are total in parts by weight
It is mixed, 7.6X102Under conditions of be dried under reduced pressure 2.3h after, be granulated using pelletizer, obtain the removing first of partial size average out to 8mm
The particulate adsorbent material of aldehyde.
200g sodium alginate manufactured in the present embodiment is grafted hydroxypropylamine polymer and removes the granular absorption of formaldehyde
Material is respectively placed in the adsorption effect that PARA FORMALDEHYDE PRILLS(91,95) is tested in standard test case, and test data difference is as shown in Table 3, 4:
The adsorption capacity experimental data of 3 sodium alginate of table grafting hydroxypropylamine polymer PARA FORMALDEHYDE PRILLS(91,95)
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 1 | 3.71 |
| 2 | 5 | 10 | 0.28 |
| 3 | 5 | 20 | 0.13 |
Table 4 removes the adsorption capacity experimental data of the particulate adsorbent material PARA FORMALDEHYDE PRILLS(91,95) of formaldehyde
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 20 | 0.18 |
| 2 | 5 | 20 | 0.12 |
| 3 | 5 | 20 | 0.16 |
| 4 | 5 | 20 | 0.13 |
Embodiment 3
A kind of particulate adsorbent material for removing formaldehyde, the raw material including following parts by weight: sodium alginate is grafted hydroxyl fourth
1 part of amine polymer, 4 parts of activated carbon fibre.
The method for preparing the particulate adsorbent material of above-mentioned removing formaldehyde, comprising the following steps:
1, the calcium alginate that 30g weight average molecular weight is 20K Da is distributed in 100mL deionized water, is heated to 80 DEG C simultaneously
Stirring 0.5 hour, filtering obtain supernatant liquor, obtain the pure solution of sodium alginate；
2, it weighs the above-mentioned supernatant liquor of 10g and is placed in 110 DEG C, absolute pressure 9X102It is dried under reduced pressure 3h under the conditions of Pa, will obtain
Solid matter quality divided by the quality of weighed supernatant liquor, obtain sodium alginate content；
3, gradually 0.3 part of calcium hydroxide, 0.2 part of hydroxyl butylamine are added in parts by weight and are contained containing 1 part of sodium alginate
In the pure solution of the sodium alginate of amount, reflux is cooled to room temperature after 24 hours, and it is molten to obtain sodium alginate grafting hydroxyl butylamine polymer
Liquid；
4, the isopropanol of 5 times of volume ratios is added in above-mentioned sodium alginate grafting hydroxyl butylamine polymer solution, is placed in
10min is handled in the centrifuge of 10000rpm, removes supernatant liquor；Repeated centrifugation 5 times, obtain removal calcium hydroxide and free hydroxyl
The sodium alginate of base butylamine is grafted hydroxyl butylamine polymer solution；
5, the sodium alginate grafting hydroxyl butylamine polymer solution after step 4 purification is placed in 110 DEG C, absolute pressure 20Pa
Under conditions of be dried under reduced pressure 3h, obtain sodium alginate and be grafted hydroxyl butylamine polymer；
6,1 part of sodium alginate grafting hydroxyl butylamine polymer is blended with 5 parts of activated carbon fibre in parts by weight,
7.6X102Under conditions of be dried under reduced pressure 2.3h after, be granulated using pelletizer, obtain the removing formaldehyde of partial size average out to 2mm
Particulate adsorbent material.
200g sodium alginate manufactured in the present embodiment is grafted hydroxyl butylamine polymer and removes the granular absorption of formaldehyde
Material is respectively placed in the adsorption effect that PARA FORMALDEHYDE PRILLS(91,95) is tested in standard test case, and test data difference is as shown in Table 5,6:
The adsorption capacity experimental data of 5 sodium alginate of table grafting hydroxyl butylamine polymer PARA FORMALDEHYDE PRILLS(91,95)
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 1 | 3.79 |
| 2 | 5 | 10 | 0.25 |
| 3 | 5 | 20 | 0.09 |
Table 6 removes the adsorption capacity experimental data of the particulate adsorbent material PARA FORMALDEHYDE PRILLS(91,95) of formaldehyde
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 20 | 0.13 |
| 2 | 5 | 20 | 0.09 |
| 3 | 5 | 20 | 0.11 |
| 4 | 5 | 20 | 0.11 |
Embodiment 4
A kind of particulate adsorbent material for removing formaldehyde, the raw material including following parts by weight: sodium alginate is grafted hydroxyl second
4 parts of diatomite of 1 part of amine polymer, 1000 mesh numbers.
The method for preparing the particulate adsorbent material of above-mentioned removing formaldehyde, comprising the following steps:
1, the sodium alginate that 30g weight average molecular weight is 15K Da is distributed in deionized water, is heated to 65 DEG C and stirs 1
Hour, filtering obtains supernatant liquor, obtains the pure solution of sodium alginate；
2, it weighs the above-mentioned supernatant liquor of 10g to be placed in 90 DEG C, be dried under reduced pressure 2.3h under the conditions of absolute pressure 60Pa, by acquisition
The quality of solid matter obtains sodium alginate content divided by the quality of weighed supernatant liquor；
3, gradually 0.25 part of sodium hydroxide, 0.35 part of aminoethyle alcohol are added to containing 1 part of sodium alginate in parts by weight
In the pure solution of the sodium alginate of content, reflux is cooled to room temperature after 18 hours, is obtained sodium alginate and is grafted aminoethyle alcohol polymer
Solution；
4, the ethyl alcohol of 4 times of volume ratios is added in sodium alginate grafting aminoethyle alcohol polymer solution, is placed in 6000rpm
Centrifuge in handle 22min, remove supernatant liquor；, obtain removal sodium hydroxide and free hydroxyl group ethamine repeated centrifugation for 3 times
Sodium alginate is grafted aminoethyle alcohol polymer solution；
5, the sodium alginate grafting aminoethyle alcohol polymer solution after step 4 purification is placed in 105 DEG C, absolute pressure
4.5X102It is dried under reduced pressure 1.8h under conditions of Pa, obtains sodium alginate and is grafted aminoethyle alcohol polymer；
6,1 part of sodium alginate grafting hydroxy alkyl amine polymer and the diatomite of 6 part of 1000 mesh number are total in parts by weight
It is mixed, 6.8X102Under conditions of be dried under reduced pressure 2.3h after, be granulated using pelletizer, obtain the removing first of partial size average out to 8mm
The particulate adsorbent material of aldehyde.
200g sodium alginate manufactured in the present embodiment is grafted aminoethyle alcohol polymer and removes the granular absorption of formaldehyde
Material is respectively placed in the adsorption effect that PARA FORMALDEHYDE PRILLS(91,95) is tested in standard test case, and test data is respectively as shown in table 7,8:
The adsorption capacity experimental data of 7 sodium alginate of table grafting aminoethyle alcohol polymer PARA FORMALDEHYDE PRILLS(91,95)
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 1 | 3.84 |
| 2 | 5 | 10 | 0.27 |
| 3 | 5 | 20 | 0.11 |
Table 8 removes the adsorption capacity experimental data of the particulate adsorbent material PARA FORMALDEHYDE PRILLS(91,95) of formaldehyde
| Test serial number | Burst size of methanal mg/L | Testing time min | Formaldehyde residue content mg/L |
| 1 | 5 | 20 | 0.12 |
| 2 | 5 | 20 | 0.11 |
| 3 | 5 | 20 | 0.09 |
| 4 | 5 | 20 | 0.08 |
Claims (10)
1. a kind of particulate adsorbent material for removing formaldehyde, which is characterized in that the raw material including following parts by weight: sodium alginate connects
1 part of branch hydroxy alkyl amine polymer, activated carbon fibre or 4~6 parts of diatomite；The sodium alginate grafting hydroxy alkyl amine polymerization
The monomer structure formula of object are as follows:
Wherein, R is alkyl.
2. the particulate adsorbent material according to claim 1 for removing formaldehyde, which is characterized in that the alkyl is ethyl, third
Base or butyl.
3. the particulate adsorbent material according to claim 1 for removing formaldehyde, which is characterized in that the hydroxy alkyl amine is hydroxyl
Base ethamine, hydroxypropylamine or hydroxyl butylamine.
4. the particulate adsorbent material according to claim 1 for removing formaldehyde, which is characterized in that the particulate adsorbent material
Partial size is 2~8mm.
5. a kind of method for preparing any one of Claims 1 to 4 particulate adsorbent material for removing formaldehyde, which is characterized in that
The following steps are included:
(1) sodium alginate is distributed in water, is sufficiently dissolved, filtering obtains supernatant liquor to get the pure solution of sodium alginate is arrived；
(2) by hydroxy alkyl amine and the pure solution of sodium alginate hybrid reaction under alkaline condition, sodium alginate grafting hydroxyl is obtained
Alkylamine polymer solution obtains sodium alginate after dry and is grafted hydroxy alkyl amine polymer；
(3) sodium alginate grafting hydroxy alkyl amine is blended with activated carbon fibre or diatomite in parts by weight, granulation obtains clear
Except the particulate adsorbent material of formaldehyde.
6. the method that the particulate adsorbent material of formaldehyde is removed in preparation according to claim 5, which is characterized in that described in offer
The alkali of alkaline condition is at least one of potassium hydroxide, sodium hydroxide, calcium hydroxide or ammonium hydroxide.
7. the method that the particulate adsorbent material of formaldehyde is removed in preparation according to claim 5, which is characterized in that will purify molten
Agent is added in step (2) the sodium alginate grafting hydroxy alkyl amine polymer solution, and centrifugation removal supernatant liquor is mentioned
Sodium alginate after pure is grafted hydroxy alkyl amine polymer solution.
8. the method that the particulate adsorbent material of formaldehyde is removed in preparation according to claim 7, which is characterized in that the purification
Solvent is ethyl alcohol, propyl alcohol or isopropanol.
9. the method that the particulate adsorbent material of formaldehyde is removed in preparation according to claim 5, which is characterized in that the drying
To be dried under reduced pressure processing, obtains sodium alginate and be grafted hydroxy alkyl amine polymer.
10. the method that the particulate adsorbent material of formaldehyde is removed in preparation according to claim 5, which is characterized in that provide institute
State sodium alginate in the alkali, hydroxy alkyl amine and the pure solution of sodium alginate of alkaline condition weight ratio be 0.1~0.3:0.2~
0.4:1.
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