CN112892488A - Honeycomb attapulgite clay material, preparation method and application - Google Patents
Honeycomb attapulgite clay material, preparation method and application Download PDFInfo
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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
- 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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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/06—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising oxides or hydroxides of metals not provided for in group B01J20/04
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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
- B01J20/10—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
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
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- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/12—Naturally occurring clays or bleaching earth
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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
- B01J20/28—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
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- 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
- B01J20/28042—Shaped bodies; Monolithic structures
- B01J20/28045—Honeycomb or cellular structures; Solid foams or sponges
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- 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
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- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/702—Hydrocarbons
- B01D2257/7027—Aromatic hydrocarbons
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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
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- B01D2257/704—Solvents not covered by groups B01D2257/702 - B01D2257/7027
Abstract
A honeycomb type attapulgite clay material, a preparation method and application thereof, belonging to the field of modified functional materials. The raw materials used by weight percentage are as follows: 70-85% of modified attapulgite clay, 5-15% of titanium dioxide, 1-5% of sodium silicate, 3-5% of sodium dodecyl benzene sulfonate solution, 3-5% of hexadecyl trimethyl ammonium bromide solution, and the mass ratio of the raw materials to water is 10-5: 1; also discloses a preparation method thereof. The modified attapulgite clay is used as a main raw material, and the prepared material has high strength, is not easy to damage and has long service life. In addition, the invention hasLarge specific surface area, Si-OH and OH existing on the surface2The sodium dodecyl benzene sulfonate and the hexadecyl trimethyl ammonium bromide have synergistic compatibilization effect, can enhance the distribution effect on organic matters, and have good adsorption effect on harmful gases such as formaldehyde, toluene and the like.
Description
Technical Field
The invention relates to the field of modified functional materials, in particular to a honeycomb type attapulgite clay material, a preparation method and application thereof.
Background
After the "soot-type pollution" of the 18 th century and the "photochemical" pollution of the 19 th century, human beings are currently undergoing a third pollution period, which is marked by "indoor environmental pollution". Air purification has therefore to be taken into account. Nowadays, the main adsorbing material used for air purification is activated carbon. The activated carbon adopts a physical adsorption method, but has certain defects and limitations, such as easy saturation, high temperature resistance, fragility, high treatment cost and the like, so that a new material is needed to be searched, the adsorption effect is enhanced, and the cost is reduced.
Disclosure of Invention
The invention aims to provide an economical and efficient honeycomb type attapulgite clay material for replacing activated carbon, a preparation method thereof and application in the field of adsorption.
The technical scheme of the invention is as follows:
a preparation method of a honeycomb type attapulgite clay material comprises the following steps:
(1) mixing the modified attapulgite clay with a sodium dodecyl benzene sulfonate solution and a hexadecyl trimethyl ammonium bromide solution, placing the mixture into a constant-temperature oscillator, oscillating the mixture for 2 to 3 hours at the temperature of between 70 and 80 ℃, taking the mixture out, washing the mixture with clear water, drying the washed mixture at the temperature of between 80 and 90 ℃, and grinding the dried mixture;
(2) adding the ground powder, titanium dioxide and sodium silicate into a stirrer according to the mass ratio for stirring, adding water after 10-15 minutes, and continuously stirring to form a plastic mud block;
(3) conveying the plastic mud blocks into a vacuum pugging machine to uniformly mix the mud blocks;
(4) putting the pug subjected to pugging into a honeycomb mould for extrusion forming to obtain a wet honeycomb type attapulgite clay material;
(5) placing the wet honeycomb type attapulgite clay in an oven, and drying at 105 ℃ for 20-24h to finally obtain the honeycomb type attapulgite clay material.
Further, the raw materials and the mass percentage are respectively as follows: 70-85% of modified attapulgite clay, 5-15% of titanium dioxide, 1-5% of sodium silicate, 3-5% of sodium dodecyl benzene sulfonate solution and 3-5% of hexadecyl trimethyl ammonium bromide solution, wherein the mass ratio of the raw materials to water is 10-5: 1.
further, the preparation method of the modified attapulgite clay comprises the steps of calcining the attapulgite clay at the temperature of 400-500 ℃ for 2-3 hours, naturally cooling to room temperature, taking out, and grinding and dispersing uniformly to obtain the modified attapulgite clay.
Furthermore, the mass concentration of the sodium dodecyl benzene sulfonate solution and the mass concentration of the hexadecyl trimethyl ammonium bromide solution are respectively 280g/L-500g/L and 100g/L-350 g/L.
The invention has the beneficial effects that: according to the honeycomb type attapulgite clay prepared by the technical scheme, the proportion of main skeleton components such as silicon dioxide, calcium oxide and magnesium oxide in the modified attapulgite clay is high, and simultaneously titanium dioxide and sodium silicate are added, so that the prepared material is high in strength, not easy to damage and long in service life. In addition, the invention has larger specific surface area, and Si-OH and OH exist on the surface2The sodium dodecyl benzene sulfonate and the hexadecyl trimethyl ammonium bromide have synergistic compatibilization effect, can enhance the distribution effect on organic matters, and have good adsorption effect on harmful gases such as formaldehyde, toluene and the like.
Drawings
FIG. 1 is a Freundlich adsorption isotherm of the four formulations for formaldehyde in the gas phase.
Figure 2 is a Freundlich penetration curve of four formulations against formaldehyde in the gas phase.
Detailed Description
The specific implementation and operation modes of the invention are as follows:
example 1:
the raw materials used by weight percentage are as follows: 80% of modified attapulgite clay, 10% of titanium dioxide, 2% of sodium silicate, 4% of sodium dodecyl benzene sulfonate solution with the mass concentration of 350g/L, 4% of hexadecyl trimethyl ammonium bromide solution with the mass concentration of 200g/L, and the mass ratio of the raw materials to water is 8: 1.
the preparation method of the modified attapulgite clay comprises the steps of putting the attapulgite clay into a high-temperature resistance furnace, calcining for 2.5 hours at 500 ℃, naturally cooling to room temperature, taking out, grinding, and sieving with a 260-mesh sieve.
The preparation method of the honeycomb type attapulgite clay is characterized by comprising the following preparation steps: mixing modified attapulgite clay, sodium dodecyl benzene sulfonate solution and hexadecyl trimethyl ammonium bromide solution, placing the mixture into a constant-temperature oscillator, oscillating the mixture for 2 hours at 75 ℃, taking the mixture out, washing the mixture with clear water, drying the mixture at 85 ℃, grinding the mixture, sieving the mixture with a 260-mesh sieve, adding the mixture, titanium dioxide and sodium silicate into a stirrer according to the mass ratio, stirring the mixture, adding water after 15 minutes, and continuously stirring the mixture to form a plastic mud block; and conveying the mixture to a vacuum pug mill to uniformly mix the mud blocks. Putting the pug subjected to pugging into a honeycomb mould for extrusion forming to obtain wet honeycomb type attapulgite clay; and (3) placing the wet honeycomb type attapulgite clay into an oven, and drying for 24 hours at 105 ℃ to finally obtain the honeycomb type attapulgite clay.
Example 2:
the raw materials used by weight percentage are as follows: 82% of modified attapulgite clay, 9% of titanium dioxide, 3% of sodium silicate, 3% of sodium dodecyl benzene sulfonate solution with the mass concentration of 300g/L, 3% of hexadecyl trimethyl ammonium bromide solution with the mass concentration of 300g/L, and the mass ratio of the raw materials to water is 8: 1.
the preparation method of the modified attapulgite clay comprises the steps of putting the attapulgite clay into a high-temperature resistance furnace, calcining for 2.5 hours at 500 ℃, naturally cooling to room temperature, taking out, grinding, and sieving with a 260-mesh sieve.
The preparation method of the honeycomb type attapulgite clay is characterized by comprising the following preparation steps: mixing modified attapulgite clay, sodium dodecyl benzene sulfonate solution and hexadecyl trimethyl ammonium bromide solution, placing the mixture into a constant-temperature oscillator, oscillating the mixture for 2 hours at 75 ℃, taking the mixture out, washing the mixture with clear water, drying the mixture at 85 ℃, grinding the mixture, sieving the mixture with a 260-mesh sieve, adding the mixture, titanium dioxide and sodium silicate into a stirrer according to the mass ratio, stirring the mixture, adding water after 15 minutes, and continuously stirring the mixture to form a plastic mud block; and conveying the mixture to a vacuum pug mill to uniformly mix the mud blocks. Putting the pug subjected to pugging into a honeycomb mould for extrusion forming to obtain wet honeycomb type attapulgite clay; and (3) placing the wet honeycomb type attapulgite clay into an oven, and drying for 24 hours at 105 ℃ to finally obtain the honeycomb type attapulgite clay.
Comparative example 1:
the raw materials used by weight percentage are as follows: 90% of modified attapulgite clay, 2% of titanium dioxide, 5% of sodium silicate, 1.5% of sodium dodecyl benzene sulfonate solution with the mass concentration of 100g/L, 1.5% of hexadecyl trimethyl ammonium bromide solution with the mass concentration of 100g/L, and the mass ratio of the raw materials to water is 10: 1.
the preparation method of the modified attapulgite clay comprises the steps of putting the attapulgite clay into a high-temperature resistance furnace, calcining for 2.5 hours at 500 ℃, naturally cooling to room temperature, taking out, grinding, and sieving with a 260-mesh sieve.
The preparation method of the honeycomb type attapulgite clay is characterized by comprising the following preparation steps: mixing modified attapulgite clay, sodium dodecyl benzene sulfonate solution and hexadecyl trimethyl ammonium bromide solution, placing the mixture into a constant-temperature oscillator, oscillating the mixture for 2 hours at 75 ℃, taking the mixture out, washing the mixture with clear water, drying the mixture at 85 ℃, grinding the mixture, sieving the mixture with a 260-mesh sieve, adding the mixture, titanium dioxide and sodium silicate into a stirrer according to the mass ratio, stirring the mixture, adding water after 15 minutes, and continuously stirring the mixture to form a plastic mud block; and conveying the mixture to a vacuum pug mill to uniformly mix the mud blocks. Putting the pug subjected to pugging into a honeycomb mould for extrusion forming to obtain wet honeycomb type attapulgite clay; and (3) placing the wet honeycomb type attapulgite clay into an oven, and drying for 24 hours at 105 ℃ to finally obtain the honeycomb type attapulgite clay.
Comparative example 2:
the raw materials used by weight percentage are as follows: 65% of modified attapulgite clay, 15% of titanium dioxide, 10% of sodium silicate, 5% of sodium dodecyl benzene sulfonate solution with the mass concentration of 100g/L, 5% of hexadecyl trimethyl ammonium bromide solution with the mass concentration of 100g/L, and the mass ratio of the raw materials to water is 10: 1.
the preparation method of the modified attapulgite clay comprises the steps of putting the attapulgite clay into a high-temperature resistance furnace, calcining for 2.5 hours at 500 ℃, naturally cooling to room temperature, taking out, grinding, and sieving with a 260-mesh sieve.
The preparation method of the honeycomb type attapulgite clay is characterized by comprising the following preparation steps: mixing modified attapulgite clay, sodium dodecyl benzene sulfonate solution and hexadecyl trimethyl ammonium bromide solution, placing the mixture into a constant-temperature oscillator, oscillating the mixture for 2 hours at 75 ℃, taking the mixture out, washing the mixture with clear water, drying the mixture at 85 ℃, grinding the mixture, sieving the mixture with a 260-mesh sieve, adding the mixture, titanium dioxide and sodium silicate into a stirrer according to the mass ratio, stirring the mixture, adding water after 15 minutes, and continuously stirring the mixture to form a plastic mud block; and conveying the mixture to a vacuum pug mill to uniformly mix the mud blocks. Putting the pug subjected to pugging into a honeycomb mould for extrusion forming to obtain wet honeycomb type attapulgite clay; and (3) placing the wet honeycomb type attapulgite clay into an oven, and drying for 24 hours at 105 ℃ to finally obtain the honeycomb type attapulgite clay.
The experimental results of the adsorption of the formaldehyde in the gas phase in each example and comparative example are shown in the attached drawings of the specification, and the adsorption effect of the formaldehyde in the gas phase in the examples 1 and 2 is obviously better than that in the comparative examples 1 and 2.
According to the honeycomb type attapulgite clay prepared by the technical scheme, the proportion of main skeleton components such as silicon dioxide, calcium oxide and magnesium oxide in the modified attapulgite clay is high, and simultaneously titanium dioxide and sodium silicate are added, so that the prepared material is high in strength, not easy to damage and long in service life. In addition, the invention has larger specific surface area, and Si-OH and OH exist on the surface2The sodium dodecyl benzene sulfonate and the hexadecyl trimethyl ammonium bromide have a synergistic compatibilization effect, can enhance the distribution effect on organic matters, and have a good adsorption function on harmful gases such as formaldehyde, toluene and the like.
Claims (7)
1. A preparation method of a honeycomb type attapulgite clay material is characterized by comprising the following steps:
(1) mixing the modified attapulgite clay with a sodium dodecyl benzene sulfonate solution and a hexadecyl trimethyl ammonium bromide solution, placing the mixture into a constant-temperature oscillator, oscillating the mixture for 2 to 3 hours at the temperature of between 70 and 80 ℃, taking the mixture out, washing the mixture with clear water, drying the washed mixture at the temperature of between 80 and 90 ℃, and grinding the dried mixture;
(2) adding the ground powder, titanium dioxide and sodium silicate into a stirrer according to the mass ratio for stirring, adding water after 10-15 minutes, and continuously stirring to form a plastic mud block;
(3) conveying the plastic mud blocks into a vacuum pugging machine to uniformly mix the mud blocks;
(4) putting the pug subjected to pugging into a honeycomb mould for extrusion forming to obtain a wet honeycomb type attapulgite clay material;
(5) placing the wet honeycomb type attapulgite clay in an oven, and drying at 105 ℃ for 20-24h to finally obtain the honeycomb type attapulgite clay material.
2. The preparation method of the honeycomb type attapulgite clay material according to claim 1, wherein the raw materials and the mass percentage are respectively as follows: 70-85% of modified attapulgite clay, 5-15% of titanium dioxide, 1-5% of sodium silicate, 3-5% of sodium dodecyl benzene sulfonate solution and 3-5% of hexadecyl trimethyl ammonium bromide solution, wherein the mass ratio of the raw materials to water is 10-5: 1.
3. the method for preparing cellular attapulgite clay material according to claim 1 or 2, wherein the modified attapulgite clay is prepared by calcining attapulgite clay at 400-500 ℃ for 2-3 hours, naturally cooling to room temperature, taking out, grinding and dispersing uniformly.
4. The method for preparing the cellular attapulgite clay material according to claim 1 or 2, wherein the mass concentrations of the sodium dodecyl benzene sulfonate solution and the cetyl trimethyl ammonium bromide solution are respectively 280g/L-500g/L and 100g/L-350 g/L.
5. The method for preparing the cellular attapulgite clay material according to claim 3, wherein the mass concentrations of the sodium dodecyl benzene sulfonate solution and the cetyl trimethyl ammonium bromide solution are respectively 280g/L-500g/L and 100g/L-350 g/L.
6. A cellular attapulgite clay material, which is characterized in that the cellular attapulgite clay material is prepared by the preparation method of any one of claims 1 to 5.
7. The application of the cellular attapulgite clay material is characterized in that the cellular attapulgite clay material prepared by the preparation method of any one of claims 1 to 5 is used for adsorbing harmful gases.
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