CN108079737A - A kind of preparation method of multi-stage porous formaldehyde adsorbent - Google Patents

A kind of preparation method of multi-stage porous formaldehyde adsorbent Download PDF

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Publication number
CN108079737A
CN108079737A CN201711360095.8A CN201711360095A CN108079737A CN 108079737 A CN108079737 A CN 108079737A CN 201711360095 A CN201711360095 A CN 201711360095A CN 108079737 A CN108079737 A CN 108079737A
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formaldehyde
stage porous
adsorbent
fused quartz
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吴娜
赵丰
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Ningbo City River Qingyuan Technology Transfer Services Ltd
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Ningbo City River Qingyuan Technology Transfer Services Ltd
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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
    • 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
    • B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
    • 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
    • B01J20/28002—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 physical properties
    • B01J20/28004—Sorbent size or size distribution, e.g. particle size
    • B01J20/28007—Sorbent size or size distribution, e.g. particle size with size in the range 1-100 nanometers, e.g. nanosized particles, nanofibers, nanotubes, nanowires or the like
    • 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
    • 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
    • B01J20/28054—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 surface properties or porosity
    • 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
    • B01J20/28054—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 surface properties or porosity
    • B01J20/28057—Surface area, e.g. B.E.T specific surface area
    • 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
    • B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027

Abstract

The invention discloses a kind of multi-stage porous formaldehyde adsorbent preparation method, Na2SiO3·H2O, nanometer fused quartz powder, FeCl2·4H2O, 4-propyl bromide, ammonium chloride, nano-calcium carbonate, KH 570 and aluminium oxide powder are primary raw material, multi-stage porous molecular sieve analog structure adsorbent containing metal heteroatom is synthesized by adding the sight template nano-calcium carbonate that is situated between using in-situ synthetic method, acidity and microcellular structure to zeolite improve the formaldehyde capacity of adsorbent while playing adjustment effect, multi-stage porous adsorbent provided by the invention not only increases the contact area between formaldehyde molecule and duct, and the pernicious gases such as oleophilic drainage, high stability, PARA FORMALDEHYDE PRILLS(91,95) have excellent removal effect.

Description

A kind of preparation method of multi-stage porous formaldehyde adsorbent
Technical field
Invention is related to a kind of preparation method of multi-stage porous formaldehyde adsorbent, belongs to field of Environment Protection.
Background technology
Formaldehyde purifying agent is also known as formaldehyde scavenger, formaldehyde absorptive reagent or methanal trapping agent, is containing under certain condition The aqueous solution of the compound chemically reacted with formaldehyde, such as amides, phenolphthalein class, organic amine, the water of inorganic titanium salt Solution and its mixture.Both the reactions such as these substances can be complexed with formaldehyde, be aoxidized, addition are to destroy, decomposing formaldehyde, make Reaction generation water, carbon dioxide and nontoxic reaction product, so as to achieve the purpose that eliminate formaldehyde.Existing formaldehyde purifying agent, Some is main component based on aminated compounds such as urea, ethylenediamines, although the removal of this kind of formaldehyde purifying agent PARA FORMALDEHYDE PRILLS(91,95) is notable, But such compound, which is excessively used, can cause the pollution again of ammonia, the taste for making indoor ammonia is strong, is not easy to remove, and causes secondary Pollution.Therefore, it is urgent to provide a kind of high treating effect, the formaldehyde purifying agents of non-secondary pollution.
The content of the invention
It is an object of the invention to provide a kind of multi-stage porous formaldehyde adsorbent its preparation method, the material prepared by this method Material has excellent purifying formaldehyde effect.
A kind of preparation method of multi-stage porous formaldehyde adsorbent, this method comprise the following steps：
Step 1 weighs 4 parts of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；
Raw material after above-mentioned grinding is added in premixing machine and is stirred by step 2, under room temperature, is stirred with the speed of 1000r/min 60min is mixed, is sufficiently mixed, 7 parts of KH-570 and 14 part of aluminium oxide powders is sequentially added, obtains paste；
Step 3 moves into above-mentioned paste in reaction kettle, and is passed through nitrogen deoxidation sealing, reaction kettle is put in an oven, 180 DEG C reaction 48h, be cooled to room temperature afterwards；
Step 4, product deionized water dissolving obtained above fully wash insoluble matter to cleaning solution to be filtered after neutrality, institute Filter cake in 50 DEG C of dryings, then handle 20h with the hydrochloric acid solution of 1M, removal is situated between see template nano-calcium carbonate after, spend from Sub- water filters after fully washing to neutrality, and filter cake obtains multi-stage porous formaldehyde adsorbent in 60 DEG C of dry 12h.
The nanometer vitreous silica powder, preparation method thereof is as follows：
Step 1 is clayed into power vitreous silica ball with ball mill, takes the powder that can cross 200 mesh sieves spare；
Step 2 takes 34 portions of sucrose to be dissolved in 200 parts of deionized waters, then slow into sucrose solution in the case of stirring 18 parts of above-mentioned fused quartz powders are added in, is uniformly mixed, is placed in drying box, is dried at 80 DEG C, cools down, is put into Gan Guozhong；
Crucible is placed in high-temperature atmosphere furnace by step 3, and under the protection of nitrogen, 700 DEG C of guarantors are heated to 10 DEG C of heating rate Warm 1h carries out sucrose thermal decomposition, gained powder is cooled down spare；
Step 4, by step 3 gained vitreous silica powder, be placed in microwave reaction stove, after first vacuumizing, with the speed of 5L/min Logical nitrogen,
After a period of time, 1050 DEG C of progress carbothermic reduction reactions are heated to the heating rate of 10 DEG C/min, 1.5h postcoolings take Go out, be then placed in Muffle furnace and heated, fire door is endless totally-enclosed, and 2h is handled at 600 DEG C, and removal reaction is remaining Carbon obtains a nanometer fused quartz powder.
Advantageous effect：Multi-stage porous air purifying preparation prepared by the present invention is used for the absorption of formaldehyde gas, using fabricated in situ Method synthesizes the multi-stage porous molecular sieve analog structure adsorbent containing metal heteroatom by adding the sight template nano-calcium carbonate that is situated between, Acidity and microcellular structure to zeolite improve the formaldehyde capacity of adsorbent, nanometer fused quartz powder while playing adjustment effect Middle silica belongs to unformed substance, and particle is tiny, and activity is high, large specific surface area, has excellent physicochemical property, is more to manage The multi-stage porous thought prepares raw material, not only increases the contact area between formaldehyde molecule and duct, and oleophilic drainage, stability compared with The pernicious gases such as height, PARA FORMALDEHYDE PRILLS(91,95) have excellent adsorption effect.
Specific embodiment
Embodiment 1
A kind of preparation method of multi-stage porous formaldehyde adsorbent, this method comprise the following steps：
Step 1 weighs 4 parts of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；
Raw material after above-mentioned grinding is added in premixing machine and is stirred by step 2, under room temperature, is stirred with the speed of 1000r/min 60min is mixed, is sufficiently mixed, 7 parts of KH-570 and 14 part of aluminium oxide powders is sequentially added, obtains paste；
Step 3 moves into above-mentioned paste in reaction kettle, and is passed through nitrogen deoxidation sealing, reaction kettle is put in an oven, 180 DEG C reaction 48h, be cooled to room temperature afterwards；
Step 4, product deionized water dissolving obtained above fully wash insoluble matter to cleaning solution to be filtered after neutrality, institute Filter cake in 50 DEG C of dryings, then handle 20h with the hydrochloric acid solution of 1M, removal is situated between see template nano-calcium carbonate after, spend from Sub- water filters after fully washing to neutrality, and filter cake obtains multi-stage porous formaldehyde adsorbent in 60 DEG C of dry 12h.
The nanometer vitreous silica powder, preparation method thereof is as follows：
Step 1 is clayed into power vitreous silica ball with ball mill, takes the powder that can cross 200 mesh sieves spare；
Step 2 takes 34 portions of sucrose to be dissolved in 200 parts of deionized waters, then slow into sucrose solution in the case of stirring 18 parts of above-mentioned fused quartz powders are added in, is uniformly mixed, is placed in drying box, is dried at 80 DEG C, cools down, is put into Gan Guozhong；
Crucible is placed in high-temperature atmosphere furnace by step 3, and under the protection of nitrogen, 700 DEG C of guarantors are heated to 10 DEG C of heating rate Warm 1h carries out sucrose thermal decomposition, gained powder is cooled down spare；
Step 4, by step 3 gained vitreous silica powder, be placed in microwave reaction stove, after first vacuumizing, with the speed of 5L/min Logical nitrogen,
After a period of time, 1050 DEG C of progress carbothermic reduction reactions are heated to the heating rate of 10 DEG C/min, 1.5h postcoolings take Go out, be then placed in Muffle furnace and heated, fire door is endless totally-enclosed, and 2h is handled at 600 DEG C, and removal reaction is remaining Carbon obtains a nanometer fused quartz powder.
Embodiment 2
Step 1 weighs 2 parts of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 3
Step 1 weighs 1 part of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 4
Step 1 weighs 4 parts of Na2SiO3·H2O, 8 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 5
Step 1 weighs 4 parts of Na2SiO3·H2O, 4 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 6
Step 1 weighs 4 parts of Na2SiO3·H2O, 2 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 7
Step 1 weighs 4 parts of Na2SiO3·H2O, 1 part of nanometer fused quartz powder, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 8
Step 1 weighs 4 parts of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 1 part of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Embodiment 9
Step 1 weighs 4 parts of Na2SiO3·H2O, 4 parts of MOF-199 nano materials, 16 parts of nanometer fused quartz powders, 2 parts of FeCl2· 4H2O, 0.9 part of 4-propyl bromide, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, are placed in mortar, are ground by 20min together Mill；Remaining is prepared and embodiment 1 is identical.
The MOF-199 preparation method of nano material is as follows：
Step 1, weigh 250 mg 1,3,5- equal benzoic acid are added to the n,N-Dimethylformamide and ethyl alcohol of 40 ml Mixed solution in（Volume ratio is 3: 1）, while by 430mg copper acetates C4H6CuO4·H2O is dissolved in 20ml water, is mixed Close liquid；
Above-mentioned mixed liquor is stirring evenly and then adding into 0.25ml triethanolamines by step 2, after mixed solution is stirred 3h, by product Filtering, is washed 5 times respectively with deionized water and DMF, is dried, is obtained metal-organic framework materials MOF-199.
Embodiment 10
Step 1 weighs 4 parts of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 8 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；Remaining is prepared and embodiment 1 It is identical.
Reference examples 1
It is with 1 difference of embodiment：In the step of prepared by formaldehyde adsorbent, substituting ammonium chloride with sodium chloride, dosage is constant, Remaining step is identical with embodiment 1.
Reference examples 2
It is with 1 difference of embodiment：In step 1 prepared by formaldehyde adsorbent, nano-calcium carbonate is not added, dosage is constant, Remaining step is identical with embodiment 1.
Reference examples 3
It is with 1 difference of embodiment：The step of prepared by formaldehyde adsorbent:In 2,7 parts KH-570 and 7 part three oxidation is sequentially added Two aluminium powders, remaining step are identical with embodiment 1.
Reference examples 4
It is with 1 difference of embodiment：In step 2 prepared by formaldehyde adsorbent, 14 parts KH-570 and 7 part three oxidation is sequentially added Two aluminium powders, remaining step are identical with embodiment 1.
Reference examples 5
It is with 1 difference of embodiment：In step 3 prepared by formaldehyde adsorbent, nitrogen deoxidation sealing, remaining step are no longer passed through It is identical with embodiment 1.
Reference examples 6
It is with 1 difference of embodiment：In step 3 prepared by formaldehyde adsorbent, carbon dioxide deoxidation sealing is passed through, remaining Step is identical with embodiment 1.
Reference examples 7
It is with 1 difference of embodiment：In step 1 prepared by nanometer fused quartz powder, sucrose modification, remaining step are not added It is identical with embodiment 1.
Reference examples 8
It is with 1 difference of embodiment：In step 1 prepared by nanometer fused quartz powder, with starch substituting saccharose, dosage is constant, Remaining step is identical with embodiment 1.
Reference examples 9
It is with 1 difference of embodiment：Nanometer fused quartz powder prepare step 1 in, take 17 portions of sucrose be dissolved in 200 parts go from In sub- water, 18 parts of above-mentioned fused quartz powders, remaining step and reality are then slowly added into sucrose solution in the case of stirring It is identical to apply example 1.
Reference examples 10
It is with 1 difference of embodiment：Nanometer fused quartz powder prepare step 1 in, take 3 portions of sucrose be dissolved in 200 parts go from In sub- water, 18 parts of above-mentioned fused quartz powders, remaining step and reality are then slowly added into sucrose solution in the case of stirring It is identical to apply example 1.
Choose the detection that the formaldehyde purifying agent being prepared carries out VOC purifying properties respectively；It is net that cleanser 50g is loaded into air Change in device, room volume 100m3, 25 DEG C, humidity 50%RH, initial concentration of formaldehyde 30g/m of temperature3, it is dense by 72 purification when small Degree variation calculates purifying formaldehyde rate；
Purifying formaldehyde efficiency test result
The experimental results showed that multi-stage porous formaldehyde adsorbent provided by the invention has good absorption purifying effect, sorbing material exists When fc-specific test FC, purifying formaldehyde rate is lower, illustrates that clean-up effect is poorer, conversely, effect is better；Embodiment 2 arrives embodiment 10, with 1 difference of embodiment in the primary raw material Na in formaldehyde purifying agent is changed2SiO3·H2O, nanometer fused quartz powder and FeCl2·4H2The composition and proportioning of O, absorption and purifying property to material have different degrees of influence, in Na2SiO3· H2O, nanometer fused quartz powder and FeCl2·4H2O mass ratioes are 2：8：1, when other dispensing dosages are fixed, formaldehyde absorbing effect is most It is good；It is worth noting that embodiment 9 adds in MOF-199 nano materials, purification efficiency significantly improves, and illustrates MOF-199 nanometers of materials Material has filling-material structure better optimization function；Reference examples 1 do not add nano-calcium carbonate to reference examples 2 and are substituted with sodium chloride Ammonium chloride, clean-up effect are decreased obviously, and illustrate that nano-calcium carbonate produces bigger effect porous material absorption property；Reference examples 3 Change Silane coupling reagent KH-570 and 7 parts of aluminium oxide powder proportionings to reference examples 4, effect is still bad；Reference examples 5 arrive control Example 6 is no longer passed through nitrogen deoxidation and seals and be passed through carbon dioxide, and effect is also bad, says that nitrogen deoxidation sealing is critically important；Reference examples 7 Sucrose modification is not added with example 8 and is substituted with starch, and purification efficiency is substantially reduced, and illustrates the modification of sucrose for silica flour shadow Sound is very big；Reference examples 9 and example 10 change the proportioning of modifying agent sucrose and fused quartz powder, and formaldehyde absorbing efficiency is still very low；Cause This air purifying preparation PARA FORMALDEHYDE PRILLS(91,95) prepared using the present invention has good clean-up effect.

Claims (2)

1. a kind of preparation method of multi-stage porous formaldehyde adsorbent, it is characterised in that this method comprises the following steps：
Step 1 weighs 4 parts of Na2SiO3·H2O, 16 parts of nanometer fused quartz powders, 2 parts of FeCl2·4H2O, 0.9 part of tetrapropyl bromine Change ammonium, 8 parts of ammonium chlorides, 10 parts of nano-calcium carbonates, be placed in mortar, ground by 20min together；
Raw material after above-mentioned grinding is added in premixing machine and is stirred by step 2, under room temperature, is stirred with the speed of 1000r/min 60min is mixed, is sufficiently mixed, 7 parts of KH-570 and 14 part of aluminium oxide powders is sequentially added, obtains paste；
Step 3 moves into above-mentioned paste in reaction kettle, and is passed through nitrogen deoxidation sealing, reaction kettle is put in an oven, 180 DEG C reaction 48h, be cooled to room temperature afterwards；
Step 4, product deionized water dissolving obtained above fully wash insoluble matter to cleaning solution to be filtered after neutrality, institute Filter cake in 50 DEG C of dryings, then handle 20h with the hydrochloric acid solution of 1M, removal is situated between see template nano-calcium carbonate after, spend from Sub- water filters after fully washing to neutrality, and filter cake obtains multi-stage porous formaldehyde adsorbent in 60 DEG C of dry 12h.
2. a kind of preparation method of multi-stage porous formaldehyde adsorbent according to claim 1, which is characterized in that
The nanometer vitreous silica powder, preparation method thereof is as follows：
Step 1 is clayed into power vitreous silica ball with ball mill, takes the powder that can cross 200 mesh sieves spare；
Step 2 takes 34 portions of sucrose to be dissolved in 200 parts of deionized waters, then slow into sucrose solution in the case of stirring 18 parts of above-mentioned fused quartz powders are added in, is uniformly mixed, is placed in drying box, is dried at 80 DEG C, cools down, is put into Gan Guozhong；
Crucible is placed in high-temperature atmosphere furnace by step 3, and under the protection of nitrogen, 700 DEG C of guarantors are heated to 10 DEG C of heating rate Warm 1h carries out sucrose thermal decomposition, gained powder is cooled down spare；
Step 4, by step 3 gained vitreous silica powder, be placed in microwave reaction stove, after first vacuumizing, with the speed of 5L/min Logical nitrogen,
After a period of time, 1050 DEG C of progress carbothermic reduction reactions are heated to the heating rate of 10 DEG C/min, 1.5h postcoolings take Go out, be then placed in Muffle furnace and heated, fire door is endless totally-enclosed, and 2h is handled at 600 DEG C, and removal reaction is remaining Carbon obtains a nanometer fused quartz powder.
CN201711360095.8A 2017-12-18 2017-12-18 A kind of preparation method of multi-stage porous formaldehyde adsorbent Pending CN108079737A (en)

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CN108939857A (en) * 2018-07-20 2018-12-07 刘凡领 A kind of preparation method of smoke denitrifier
CN109589920A (en) * 2018-12-27 2019-04-09 佛山科学技术学院 A kind of fast preparation method of carbosphere
CN112892474A (en) * 2021-01-15 2021-06-04 神美科技有限公司 Multifunctional industrial water treatment agent and preparation method thereof

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108939857A (en) * 2018-07-20 2018-12-07 刘凡领 A kind of preparation method of smoke denitrifier
CN109589920A (en) * 2018-12-27 2019-04-09 佛山科学技术学院 A kind of fast preparation method of carbosphere
CN109589920B (en) * 2018-12-27 2021-08-03 佛山科学技术学院 Rapid preparation method of carbon microspheres
CN112892474A (en) * 2021-01-15 2021-06-04 神美科技有限公司 Multifunctional industrial water treatment agent and preparation method thereof

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