CN108905969A - A kind of lithium magnesium silicate gel active carbon composite and preparation method thereof - Google Patents
A kind of lithium magnesium silicate gel active carbon composite and preparation method thereof Download PDFInfo
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- CN108905969A CN108905969A CN201810792913.XA CN201810792913A CN108905969A CN 108905969 A CN108905969 A CN 108905969A CN 201810792913 A CN201810792913 A CN 201810792913A CN 108905969 A CN108905969 A CN 108905969A
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- active carbon
- magnesium silicate
- lithium magnesium
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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
- B01J20/02—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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- 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
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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
- B01J20/28047—Gels
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention discloses a kind of lithium magnesium silicate gel active carbon composites and preparation method thereof, lithium magnesium silicate active carbon Gel Precursor powder is prepared by freeze-drying, composite material is prepared using inorganic gel molding, finally resulting structures are put into weakly alkaline environment and are conserved；The absorption property of lithium magnesium silicate gel active carbon composite provided by the invention is more excellent than the pressed active carbon that organic binder or inorganic gel agent preparation is used alone, and raw material is conveniently easy to get, and cheap, preparation is simple, at low cost, is suitble to industrialization promotion.
Description
Technical field
The invention belongs to adsorbent material technical field, in particular to a kind of lithium magnesium silicate gel active carbon composite and its
Preparation method.
Background technique
With industry it is increasingly developed, the pollutant emission in life is more and more, either in drinking water or air,
All there is noxious material, therefore, panoramic adsorption cleaning material comes into being, wherein active carbon is because it is with Gao Bibiao
Area and excellent absorption property have received extensive concern.
There are mainly three types of forms for active carbon：It is powdered（PAC）, graininess（GAC）And pressed active carbon is still due to work
Property charcoal particle and particle between without active force, relatively loosely, storage transportational process in, pressed active carbon is just more excellent
Gesture, and the intensity of pressed active carbon is high, machinability is good, is easier to meet the multiple use of different industries.So developing one kind
Performance is good, at low cost, healthy and safe, the relatively simple pressed active carbon of preparation process has very big market
The crystal structure unit of lithium magnesium silicate gel is small thin slice of the thickness in terms of nanometer.The surface of small pieces has been covered with commutative
Cation, wherein predominantly Na+.When gel particle is mixed with water, water contacts the surface for being adsorbed to thin slice with Na+, will
Gel is strutted along thin slice, and at this moment particle expands rapidly until thin slice separates.Since thin slice level is negatively charged, end face is positively charged
Lotus, the thin slice end face after separation are attracted to the level of another thin slice, to quickly form the colloform texture of three-dimensional space, that is, block
Piece palace structure.Active carbon is distributed in lithium magnesium silicate gel rubber system by the present invention, is inter-diffused into active carbon hole, so that inhaling
Attached effect is reinforced, and lithium magnesium silicate can make inorganic gel agent more preferably form.
Summary of the invention
To solve the disadvantage that the prior art and deficiency, the present invention provides a kind of lithium magnesium silicate gel active charcoal composite woods
Material, which is characterized in that be made from the following raw materials in parts by weight, 5-20 parts of lithium magnesium silicate, 80-95 parts of Powdered Activated Carbon, inorganic glue
It is agent 20-60 parts solidifying, NaOH solution, distilled water.
Further, the inorganic gel agent is the mixing of one or more of cement, clinker or gypsum.
Further, include the following steps：
1）Activated Carbon Pretreatment：It is placed in oven and dried after Powdered Activated Carbon is washed；
2) aqueous precursor gel is prepared：Lithium magnesium silicate and active carbon are weighed, distilled water is added, it is solidifying that active carbon is stirred under ice bath
Glue；1wt%NaOH solution is added dropwise into active carbon gels, filters to obtain aqueous precursor gel after ice bath environment continues to stir 2h, uses
Deionized water washing；
3）Freeze-drying：Above-mentioned aqueous precursor gel is put into refrigerator and is freezed, is dried using vacuum freeze drier, is made
Presoma powder；
4) it forms：It weighs a certain amount of inorganic gel agent, is added distilled water, by the presoma powder mistake while stirring
Sieve is added in inorganic gel agent, pug is made after stirring, and pug is injected mold, standing demoulds afterwards for 24 hours；
5）Maintenance：It is conserved in weakly alkaline environment after demoulding, washing and drying is taken out after maintenance up to lithium magnesium silicate gel active charcoal
Composite material.
Further, 2）The additive amount of distilled water described in step is the lithium magnesium silicate and the active carbon gross mass
2 times.
Further, the ice bath environmental Kuznets Curves are at 10 DEG C or less.
Further, it is characterised in that：4）Weakly alkaline environment described in step is supersonic spraying, spray solution 5%
One of sodium bicarbonate solution or 5% sodium carbonate liquor or a variety of mixed solutions.
Further, it is characterised in that：4）Curing time described in step is 3-5 days.
The beneficial effects of the invention are as follows：1）Since lithium magnesium silicate can be swollen in water, and colloid is formed, powder activity
Charcoal is dispersed in colloidal dispersion, and colloid is mutually distributed in the hole of active carbon, and is freeze-dried so that two kinds of substances point
Cloth more evenly, so that activated carbon pore size is richer, can more steadily adsorbent, the molecular weight of material being adsorbed be distributed
It is wider； 2）Using ullrasonic spraying（Weakly alkaline environment）Composite material is conserved, so that the compression strength of material enhances, because
The absorption property and compression strength of a kind of this lithium magnesium silicate gel active carbon composite provided by the invention are compared to independent
The pressed active carbon prepared using inorganic gel agent is more excellent, and raw material is conveniently easy to get, cheap, and preparation is simple, cost
It is low, without using high temperature, it is suitble to industrialization promotion.
Detailed description of the invention
Fig. 1 is the relational graph of each sample PARA FORMALDEHYDE PRILLS(91,95) adsorption rate and adsorption time；
Fig. 2 is the relational graph of each sample difference maintenance method and curing time
In figure, A sample is sample made from embodiment 1, and blank sample is the examination for individually using inorganic gel agent pressed active carbon
Sample, control sample are same process conditions using sample made from water curing.
Specific embodiment
Below with reference to embodiment, the present invention will be further described, it should be understood that these embodiments are only used for illustration
Purpose, be in no way intended to limit protection scope of the present invention.
Embodiment 1
1）1000g coconut shell powder active carbon is accurately weighed, after washing 4 times, is placed in oven and dried, oven temperature is arranged to 120
DEG C, dry 4h is spare；
2）Coconut shell powder active carbon after accurately weighing lithium magnesium silicate 50g and 450g drying is sufficiently mixed, and the steaming of 1000ml is added
Distilled water, under ice bath environment（Temperature controls 10 DEG C or less）Active carbon gels are stirred into, continue to be added dropwise into active carbon gels
The NaOH solution of 1wt% filters to obtain aqueous precursor gel after ice bath environment continues to stir 2h, adopts and be washed with deionized；
3）Above-mentioned aqueous precursor gel is put into refrigerator and is freezed, is dried using vacuum freeze drier, precursor is made
Body；
4）100g cement is accurately weighed, while waterside is added to stir, while 100g presoma powder is weighed and sieving with 100 mesh sieve addition cement
In, at pug after amount of water 200ml, stirring 1h；
5）Pug is injected in mold, standing demoulds for 24 hours；
6）It is put into the sodium carbonate liquor of 5wt% and conserves 3 days after demoulding, composite A is made in washing and drying after the completion of maintenance.
A sample made from 5g embodiment 1 is weighed respectively and blank group sample measures formaldehyde under 30 DEG C of constant-temperature enclosed environment
Adsorb 1h, 3h, 6h, 12h, for 24 hours, the formaldehyde absorbing amount of 48h and 72h, from figure 1 it appears that the formaldehyde absorbing amount of A sample
It is apparently higher than blank group, with the extension of adsorption time, A sample and control sample have reached balance in absorption for 24 hours, and blank examination
Sample reaches balance in 48h, shows that the rate of adsorption of A sample and control sample is faster than blank sample.
A sample made from 5g embodiment 1 is weighed respectively and control group sample carries out compression test, as shown in Fig. 2, A sample
Compression strength be apparently higher than control group sample, and with the extension of time, the compression strength of each sample tends to be flat after maintenance 3 days
Weighing apparatus.
Performance：Formaldehyde absorbing amount：312.94mg/g, benzene adsorbance：279.85mg/g, compression strength：12.25Mpa.
Embodiment 2
1）1000g coconut shell powder active carbon is accurately weighed, after washing 4 times, is placed in oven and dried, oven temperature is arranged to 120
DEG C, dry 4h is spare；
2）Coconut shell powder active carbon after accurately weighing lithium magnesium silicate 20g and 480g drying is sufficiently mixed, and the steaming of 1000ml is added
Distilled water, under ice bath environment（Temperature controls 10 DEG C or less）Active carbon gels are stirred into, continue to be added dropwise into active carbon gels
The NaOH solution of 1wt% filters to obtain aqueous precursor gel after ice bath environment continues to stir 2h, adopts and be washed with deionized；
3）Above-mentioned aqueous precursor gel is put into refrigerator and is freezed, is dried using vacuum freeze drier, precursor is made
Body；
4）50g cement is accurately weighed, while waterside is added to stir, while 150g presoma powder is weighed and sieving with 100 mesh sieve in addition cement,
Amount of water is 200ml, at pug after stirring 1h；
5）Pug is injected in mold, standing demoulds for 24 hours；
6）It is put into the sodium carbonate liquor of 5wt% and conserves 4 days after demoulding, composite material B is made in washing and drying after the completion of maintenance.
Performance：Formaldehyde absorbing amount：412.94mg/g, benzene adsorbance：378.22mg/g, compression strength：8.56Mpa.
Embodiment 3
1）1000g coconut shell powder active carbon is accurately weighed, after washing 4 times, is placed in oven and dried, oven temperature is arranged to 120
DEG C, dry 4h is spare；
2）Coconut shell powder active carbon after accurately weighing lithium magnesium silicate 10g and 490g drying is sufficiently mixed, and the steaming of 1000ml is added
Distilled water, under ice bath environment（Temperature controls 10 DEG C or less）Active carbon gels are stirred into, continue to be added dropwise into active carbon gels
The NaOH solution of 1wt% filters to obtain aqueous precursor gel after ice bath environment continues to stir 2h, adopts and be washed with deionized；
3）Above-mentioned aqueous precursor gel is put into refrigerator and is freezed, is dried using vacuum freeze drier, precursor is made
Body；
4）80g cement is accurately weighed, while waterside is added to stir, while 120g presoma powder is weighed and sieving with 100 mesh sieve in addition cement,
Amount of water is 200ml, stirs 1h into pug；
5）Pug is injected in mold, standing demoulds for 24 hours；
6）It is put into the sodium carbonate liquor of 5wt% and conserves 5 days after demoulding, composite material C is made in washing and drying after the completion of maintenance.
Performance：Formaldehyde absorbing amount：352.24mg/g, benzene adsorbance：300.65mg/g, compression strength：10.76Mpa.
Embodiment 4
1）1000g coconut shell powder active carbon is accurately weighed, after washing 4 times, is placed in oven and dried, oven temperature is arranged to 120
DEG C, dry 4h is spare；
2）Coconut shell powder active carbon after accurately weighing lithium magnesium silicate 10g and 490g drying is sufficiently mixed, and the steaming of 1000ml is added
Distilled water, under ice bath environment（Temperature controls 10 DEG C or less）Active carbon gels are stirred into, continue to be added dropwise into active carbon gels
The NaOH solution of 1wt% filters to obtain aqueous precursor gel after ice bath environment continues to stir 2h, adopts and be washed with deionized；
3）Above-mentioned aqueous precursor gel is put into refrigerator and is freezed, is dried using vacuum freeze drier, precursor is made
Body；
4）80g gypsum is accurately weighed, while waterside is added to stir, while 120g presoma powder is weighed and sieving with 100 mesh sieve in addition cement,
Amount of water is 200ml, stirs 1h into pug；
5）Pug is injected in mold, standing demoulds for 24 hours；
6）It is put into the sodium carbonate liquor of 5wt% and conserves 5 days after demoulding, composite material D is made in washing and drying after the completion of maintenance.
Performance：Formaldehyde absorbing amount：312.24mg/g, benzene adsorbance：330.38mg/g, compression strength：7.76Mpa.
Weigh respectively sample made from 5g above-described embodiment, blank sample and control sample be put into it is right respectively in close container
Benzene, formaldehyde carry out adsorption experiment.
The present invention has passed through above-mentioned case study on implementation and has been illustrated, but it is to be understood that, above-mentioned case study on implementation is
Purpose for illustrating and illustrating, and be not intended to limit the invention within the scope of described case study on implementation.The present invention is not
It is confined to above-mentioned case study on implementation, introduction according to the present invention can also make many kinds of modification, all fall within required by the present invention
Within the scope of protection.
Claims (7)
1. a kind of lithium magnesium silicate gel active carbon composite, which is characterized in that be made from the following raw materials in parts by weight, magnesium silicate
5-20 parts of lithium, 80-95 parts of Powdered Activated Carbon, 20-60 parts of inorganic gel agent, NaOH solution, distilled water.
2. a kind of lithium magnesium silicate gel active carbon composite according to claim 1, which is characterized in that the inorganic glue
Solidifying agent is the mixing of one or more of cement, clinker or gypsum.
3. a kind of preparation method of lithium magnesium silicate gel active carbon composite, it is characterised in that：Include the following steps：
1）Activated Carbon Pretreatment：It is placed in oven and dried after Powdered Activated Carbon is washed；
2) aqueous precursor gel is prepared：Lithium magnesium silicate and active carbon are weighed, distilled water is added, it is solidifying that active carbon is stirred under ice bath
Glue；1wt%NaOH solution is added dropwise into active carbon gels, filters to obtain aqueous precursor gel after ice bath environment continues to stir 2h, uses
Deionized water washing；
3）Freeze-drying：Above-mentioned aqueous precursor gel is put into refrigerator and is freezed, is dried using vacuum freeze drier, is made
Presoma powder；
4) it forms：It weighs a certain amount of inorganic gel agent, is added distilled water, by the presoma powder mistake while stirring
Sieve is added in inorganic gel agent, pug is made after stirring, and pug is injected mold, standing demoulds afterwards for 24 hours；
5）Maintenance：It is conserved in weakly alkaline environment after demoulding, washing and drying is taken out after maintenance up to lithium magnesium silicate gel active charcoal
Composite material.
4. a kind of preparation method of lithium magnesium silicate gel active carbon composite according to claim 3, it is characterised in that：
2）The additive amount of distilled water described in step is 2 times of the lithium magnesium silicate and the active carbon gross mass.
5. a kind of preparation method of lithium magnesium silicate gel active carbon composite according to claim 3, it is characterised in that：
The ice bath environmental Kuznets Curves are at 10 DEG C or less.
6. a kind of preparation method of lithium magnesium silicate gel active carbon composite according to claim 3, it is characterised in that：
4）Weakly alkaline environment described in step is supersonic spraying, and spray solution is in 5% sodium bicarbonate solution or 5% sodium carbonate liquor
One or more mixed solutions.
7. a kind of preparation method of lithium magnesium silicate gel active carbon composite according to claim 3, it is characterised in that：
4）Curing time described in step is 3-5 days.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110003695A (en) * | 2019-04-25 | 2019-07-12 | 江西省颐冠涂料有限公司 | A kind of radiation shielding coating and preparation method thereof |
| CN110127692A (en) * | 2019-05-24 | 2019-08-16 | 许皖 | A kind of preparation method of mesoporous heat-resistant activity charcoal |
| CN111794629A (en) * | 2020-07-08 | 2020-10-20 | 江西远大保险设备实业集团有限公司 | Fireproof heat-insulation type safe and manufacturing process thereof |
| CN114405486A (en) * | 2021-11-17 | 2022-04-29 | 重庆科技学院 | Preparation method of porous cryogel with antifouling, antibacterial and anti-dye adsorption functions |
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Cited By (4)
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| CN110003695A (en) * | 2019-04-25 | 2019-07-12 | 江西省颐冠涂料有限公司 | A kind of radiation shielding coating and preparation method thereof |
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| CN111794629A (en) * | 2020-07-08 | 2020-10-20 | 江西远大保险设备实业集团有限公司 | Fireproof heat-insulation type safe and manufacturing process thereof |
| CN114405486A (en) * | 2021-11-17 | 2022-04-29 | 重庆科技学院 | Preparation method of porous cryogel with antifouling, antibacterial and anti-dye adsorption functions |
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Application publication date: 20181130 |