CN112657462A - Waste gas adsorption material and preparation method thereof - Google Patents
Waste gas adsorption material and preparation method thereof Download PDFInfo
- Publication number
- CN112657462A CN112657462A CN202011428866.4A CN202011428866A CN112657462A CN 112657462 A CN112657462 A CN 112657462A CN 202011428866 A CN202011428866 A CN 202011428866A CN 112657462 A CN112657462 A CN 112657462A
- Authority
- CN
- China
- Prior art keywords
- molecular sieve
- base material
- solution
- binder
- exhaust gas
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000463 material Substances 0.000 title claims abstract description 110
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 239000002912 waste gas Substances 0.000 title abstract description 7
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 60
- 239000002808 molecular sieve Substances 0.000 claims abstract description 58
- 239000011230 binding agent Substances 0.000 claims abstract description 40
- 239000003463 adsorbent Substances 0.000 claims abstract description 35
- 239000000314 lubricant Substances 0.000 claims abstract description 35
- 239000011268 mixed slurry Substances 0.000 claims abstract description 26
- 239000002904 solvent Substances 0.000 claims abstract description 24
- 238000007598 dipping method Methods 0.000 claims abstract description 22
- 239000003093 cationic surfactant Substances 0.000 claims abstract description 17
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000001035 drying Methods 0.000 claims abstract description 16
- 239000002243 precursor Substances 0.000 claims abstract description 16
- 239000011159 matrix material Substances 0.000 claims abstract description 12
- 239000011248 coating agent Substances 0.000 claims abstract description 9
- 238000000576 coating method Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 9
- 238000010438 heat treatment Methods 0.000 claims description 21
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical group CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 claims description 16
- 238000002156 mixing Methods 0.000 claims description 10
- 239000004310 lactic acid Substances 0.000 claims description 8
- 235000014655 lactic acid Nutrition 0.000 claims description 8
- 238000005470 impregnation Methods 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 230000007797 corrosion Effects 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 229910003471 inorganic composite material Inorganic materials 0.000 claims description 2
- 238000003795 desorption Methods 0.000 abstract description 6
- 239000000203 mixture Substances 0.000 abstract description 3
- 230000008569 process Effects 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 42
- 239000007789 gas Substances 0.000 description 15
- 230000000052 comparative effect Effects 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- YCOZIPAWZNQLMR-UHFFFAOYSA-N pentadecane Chemical compound CCCCCCCCCCCCCCC YCOZIPAWZNQLMR-UHFFFAOYSA-N 0.000 description 6
- 239000012855 volatile organic compound Substances 0.000 description 6
- 239000004925 Acrylic resin Substances 0.000 description 5
- 229920000178 Acrylic resin Polymers 0.000 description 5
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical group CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 229910001387 inorganic aluminate Inorganic materials 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 229910021536 Zeolite Inorganic materials 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 2
- 229910052909 inorganic silicate Inorganic materials 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 239000010457 zeolite Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 description 1
- 229910000503 Na-aluminosilicate Inorganic materials 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 125000001204 arachidyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 description 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 description 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 description 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000001421 myristyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- -1 quaternary ammonium salt cation Chemical class 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000429 sodium aluminium silicate Substances 0.000 description 1
- 235000012217 sodium aluminium silicate Nutrition 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The invention discloses a waste gas adsorption material and a preparation method thereof, belonging to the field of adsorption materials and comprising raw materials of a molecular sieve, a lubricant, a binder, a solvent and a carrier, wherein the carrier is a matrix material, and the surface of the matrix material is provided with positive charges through a solution A. The preparation method comprises the following steps: adding a solvent into a mixture of the molecular sieve, the lubricant and the binder, and uniformly stirring to obtain mixed slurry; preparing a solution A from a cationic surfactant, and adding a base material into the solution A for dipping to obtain a precursor of the base material; dipping a matrix material precursor into the mixed slurry obtained in the step one to obtain an adsorbent; and repeatedly coating and drying the adsorbent to obtain the adsorbent. The binding force of the adsorption material carrier and the molecular sieve is firmer, the molecular sieve loss amount is less in multiple adsorption and desorption processes, and the adsorption effect is still excellent.
Description
Technical Field
The invention relates to an adsorbing material, in particular to a waste gas adsorbing material and a preparation method thereof.
Background
With the stricter pollution control of the country, the emission regulation of VOCs is also regulated more and more. The emission of VOCs with low concentration and large air volume is included in the scope of supervision and treatment. VOCs are organic volatile compounds, which are discharged in large quantities during the production process in the industries of petrochemical, pharmaceutical, printing, spraying and the like. VOCs not only pollute the air, but also are harmful to health. Adsorption is a common technique used in the industry to treat VOCs, with solid adsorbents being most common. The molecular sieve is a good solid adsorbent, and the ZSM-5 zeolite molecular sieve with high silica-alumina ratio has the characteristics of good hydrophobicity, high hydrothermal stability, high specific surface area, high temperature resistance and the like, and is often used as an adsorbent for treating VOCs.
In industrial applications, molecular sieves also have certain disadvantages for treating organic volatile contaminants. In engineering application, a powdery molecular sieve is usually loaded on a carrier to prepare an adsorption material, but due to the problem of cohesive force between the molecular sieve and the carrier, the molecular sieve is greatly lost in the adsorption and desorption processes, and the service life is greatly reduced.
Disclosure of Invention
The invention aims to solve at least one of the technical problems in the prior art and provides an exhaust gas adsorption material and a preparation method and application thereof.
The technical solution of the invention is as follows:
an exhaust gas adsorption material comprises the following raw materials: the organic-inorganic composite material comprises a molecular sieve, a lubricant, a binder, a solvent and a carrier, wherein the carrier at least comprises a matrix material, and the surface of the matrix material is positively charged through a solution A.
Preferably, the solution a is a cationic surfactant solution.
Preferably, the lubricant is lactic acid.
Preferably, the mass ratio of the molecular sieve, the lubricant, the binder, the solvent and the carrier is 1:0.01-0.5: 1-4: 1-10: 0.03-0.2.
Preferably, the binder is an inorganic binder.
The invention also provides a preparation method of the waste gas adsorbing material, which comprises the following steps:
the method comprises the following steps: mixing a molecular sieve, a lubricant and a binder, adding a solvent, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A for dipping, and taking out to obtain a precursor of the base material;
step three: dipping the precursor of the base material in the step two into the mixed slurry in the step one to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent.
Preferably, in the first step, before mixing the molecular sieve, the lubricant and the binder, the molecular sieve is subjected to activation treatment, specifically, the molecular sieve is subjected to heating treatment, and the heating temperature is controlled at 440 +/-10 ℃ for not less than 12 hours.
Preferably, in the second step, before the base material is immersed in the solution a, an additional step is further included, specifically, the base material is put in an acid solution to be corroded, so that a corrosion texture appears on the surface of the base material.
Preferably, the impregnation in step two and/or step three is carried out by ultrasonic impregnation.
Preferably, in the fourth step, the drying is carried out at the heating rate of 1-2 ℃/min for 4-5 h.
The invention has at least one of the following beneficial effects:
the invention relates to an exhaust gas adsorption material, because the molecular sieve is a porous sodium aluminosilicate, the framework in the molecular sieve crystal is made of SiO4Tetrahedron and AlO4The tetrahedron being connected by oxygen atoms at the top corners, AlO4TetrahedronThe molecular sieve has a unit negative charge, and the molecular sieve has a negative charge on the surface, so that when the molecular sieve and the matrix material are mixed, the molecular sieve is combined more firmly by the adsorption force of the opposite charges; meanwhile, the surface of the base material is corroded with grains, friction force is increased, the adhesive force of the binder is stronger, and the molecular sieve can be more firmly attached to the base material by combining the electric adsorption force, so that the service life of the adsorption material is prolonged, multiple desorption regeneration can be realized, the utilization rate is higher, in addition, the added lubricant is used for preparing the adsorption material, the adsorption material is more convenient in subsequent processing, and cracks generated in processing are reduced.
Detailed Description
The invention discloses a waste gas adsorbing material which comprises the following raw materials: the molecular sieve comprises a molecular sieve, a lubricant, a binder, a solvent and a carrier, wherein the carrier at least comprises a matrix material, the surface of the matrix material is positively charged by a solution A, and the molecular sieve is a porous sodium aluminosilicate salt, and the framework in the molecular sieve crystal is made of SiO4Tetrahedron and AlO4The tetrahedron being connected by oxygen atoms at the top corners, AlO4The tetrahedron has a unit negative charge, and it is known that the molecular sieve has a negative charge on the surface, and the adsorption force of the opposite charges makes the combination of the two materials more firm when the two materials are mixed. Specifically, the base material is a stainless steel base or a base material, and the base material can be an organic non-metallic material.
Preferably, the solution a is a cationic surfactant solution, and surface active ions generated when the cationic surfactant is ionized in an aqueous solution are positively charged, so that the surface of the matrix material is positively charged, specifically, the cationic surfactant is polyacrylamide, and may also be a triceps quaternary ammonium salt cation selected from tetradecyl to eicosyl hydrophobic chains, but is not limited thereto.
Preferably, the lubricant is lactic acid.
Preferably, the mass ratio of the molecular sieve, the lubricant, the binder, the solvent and the carrier is 1:0.01-0.5: 1-4: 1-10: 0.03-0.2.
Preferably, the binder is an inorganic binder, and the inorganic binder is one or more of attapulgite, kaolin and alkaline silica sol; and is not limited to inorganic binders such as hydroxypropyl methylcellulose in the organic binders.
The invention also provides a preparation method of the waste gas adsorbing material, which comprises the following steps:
the method comprises the following steps: mixing a molecular sieve, a lubricant and a binder, adding a solvent, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A for dipping, and taking out to obtain a precursor of the base material;
step three: dipping the precursor of the base material in the step two into the mixed slurry in the step one to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent.
Preferably, in the first step, before mixing the molecular sieve, the lubricant and the binder, the molecular sieve is subjected to activation treatment, specifically, the molecular sieve is subjected to heating treatment, and the heating temperature is controlled at 440 +/-10 ℃ for not less than 12 hours.
Preferably, in the second step, before the base material is immersed in the solution a, the method further includes an additional step, specifically, the base material is placed in an acid solution to be corroded, so that corrosion lines appear on the surface of the base material, friction force is increased, adhesive force of the adhesive is stronger, and the molecular sieve can be more firmly attached to the base material by combining with the electric adsorption force, so that the service life of the adsorption material is prolonged, multiple desorption regeneration can be performed, and the utilization rate is higher.
Preferably, the impregnation in the second step and/or the third step is ultrasonic impregnation, and the impregnation is more sufficiently uniform.
Preferably, in the fourth step, the drying is carried out at the heating rate of 1-2 ℃/min for 4-5 h.
The above technical solution is further explained below.
In the following examples, ZSM-5 molecular sieve, specifically zeolite molecular sieve, was used as the molecular sieve.
Example 1
An exhaust gas adsorption material comprises the following raw materials: the preparation method comprises the following steps of 1 part of molecular sieve, 0.01 part of lubricant, 1 part of binder, 3 parts of solvent and 0.05 part of carrier, wherein the carrier is a base material, specifically a silicon rubber base body, the surface of the base material is positively charged through a solution A, and the solution A is a cationic surfactant solution, specifically cetyl trimethyl ammonium bromide. The lubricant is lactic acid. The adhesive is acrylic resin, and the solvent is ethanol solution.
The preparation method of the adsorbing material comprises the following steps:
the method comprises the following steps: mixing a molecular sieve, a lubricant and a binder, adding a solvent, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A, ultrasonically dipping for 3 hours, and taking out to obtain a precursor of the base material;
step three: ultrasonically dipping the precursor of the base material in the step two into the mixed slurry in the step one, and dipping for 3 hours to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent, heating to 105 ℃ at the heating rate of 1 ℃/min, and drying for 4 h.
Example 2
An exhaust gas adsorption material comprises the following raw materials: the catalyst comprises the following components, by weight, 1 part of a molecular sieve, 0.2 part of a lubricant, 2 parts of a binder, 3 parts of a solvent and 0.06 part of a carrier, wherein the carrier is a base material, specifically a stainless steel ball base, the surface of the base material is positively charged through a solution A, and the solution A is a cationic surfactant solution, specifically tetra-n-butylammonium bromide. The lubricant is lactic acid. The adhesive is acrylic resin, and the solvent is ethanol solution.
The preparation method of the adsorbing material comprises the following steps:
the method comprises the following steps: mixing a molecular sieve, a lubricant and a binder, adding a solvent, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A, ultrasonically dipping for 3 hours, and taking out to obtain a precursor of the base material;
step three: ultrasonically dipping the precursor of the base material in the step two into the mixed slurry in the step one, and dipping for 3 hours to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent, heating to 95 ℃ at the heating rate of 1 ℃/min, and drying for 1 h.
Example 3
An exhaust gas adsorption material comprises the following raw materials: the catalyst comprises the following components, by weight, 1 part of a molecular sieve, 0.5 part of a lubricant, 3 parts of a binder, 9 parts of a solvent and 0.2 part of a carrier, wherein the carrier is a base material, specifically a stainless steel ball, the surface of the base material is positively charged through a solution A, and the solution A is a cationic surfactant solution, specifically tetra-n-butylammonium bromide. The lubricant is lactic acid. The binder is acrylic resin.
The preparation method of the adsorbing material comprises the following steps:
the method comprises the following steps: mixing a molecular sieve, a lubricant and a binder, adding a solvent, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A, ultrasonically dipping for 3 hours, and taking out to obtain a precursor of the base material;
step three: ultrasonically dipping the precursor of the base material in the step two into the mixed slurry in the step one, and dipping for 3 hours to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent, heating to 102 ℃ at the heating rate of 1 ℃/min, and roasting for 1.5 h.
Example 4
In this embodiment, a change is made on the basis of embodiment 2, specifically, in the second step, before the substrate is immersed in the solution a, an additional step is further included, specifically, the substrate is placed in a hydrochloric acid solution with a concentration of 1mol/L to be corroded for 20min, so that a corrosion pattern appears on the surface of the substrate.
Example 5
This example is a modification of example 2, and specifically includes, in the first step, performing an activation treatment on the molecular sieve before mixing the molecular sieve, the lubricant and the binder, specifically, performing a heating treatment on the molecular sieve, where the heating temperature is controlled at 440 ± 10 ℃ and the time is 14 hours.
COMPARATIVE EXAMPLE 1 (No Lubricant)
An exhaust gas adsorption material comprises the following raw materials: the preparation method comprises the following steps of 1 part of molecular sieve, 2 parts of binder, 3 parts of solvent and 0.06 part of carrier, wherein the carrier is a base material, specifically a silicon rubber base body, the surface of the base material is charged with positive charges through a solution A, and the solution A is a cationic surfactant solution, specifically tetra-n-butylammonium bromide. The lubricant is lactic acid. The mass ratio of the molecular sieve, the lubricant, the binder, the solvent and the carrier is 1: 0.01: 1: 3: 0.05. the binder is acrylic resin.
The preparation method of the adsorbing material comprises the following steps:
the method comprises the following steps: adding a solvent into a mixture of the molecular sieve and the binder, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A, ultrasonically dipping for 3 hours, and taking out to obtain a precursor of the base material;
step three: ultrasonically dipping the precursor of the base material in the step two into the mixed slurry in the step one, and dipping for 3 hours to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent, heating to 100 ℃ at the heating rate of 1 ℃/min, and drying for 4 h.
COMPARATIVE EXAMPLE 2 (No solution A)
An exhaust gas adsorption material comprises the following raw materials: the composite material comprises, by weight, 1 part of a molecular sieve, 0.2 part of a lubricant, 2 parts of a binder, 3 parts of a solvent and 0.06 part of a carrier, wherein the carrier is a matrix material, the lubricant is lactic acid, and the binder is acrylic resin.
The preparation method of the adsorbing material comprises the following steps:
the method comprises the following steps: adding a solvent into a mixture of the molecular sieve, the lubricant and the binder, and uniformly stirring to obtain mixed slurry;
step two: ultrasonically dipping the base material into the mixed slurry obtained in the step one, and dipping for 3 hours to load the mixed slurry on the surface of the base material to obtain an adsorbent;
step three: and repeatedly coating and drying the adsorbent to obtain the adsorbent, heating to 100 ℃ at the heating rate of 1 ℃/min, and drying for 2 h.
The organic gas (n-pentadecane gas) was subjected to the first adsorption amount test and the adsorption/desorption 100 times and then to the organic gas adsorption amount test, and the test values are shown in table 1. The cross section of the absorbent material was cut, and the cut boundary condition was observed.
Evaluation of adsorption Performance: 100g of each of the adsorbing materials prepared in examples and comparative examples was placed in a 50mL beaker, and placed in a gas generator to statically adsorb an organic gas (n-pentadecane gas) at a water bath temperature of 25 ℃; weighing after the adsorption is saturated, and testing the first adsorption capacity.
Desorption performance: and (3) putting the adsorption material after adsorption saturation into a vacuum oven, desorbing for 1 hour under the condition that the vacuum degree is not lower than 95kPa, then adjusting the temperature of the oven to 70 ℃, and heating and desorbing for 2 hours under vacuum. And finally, adjusting the temperature of the oven to room temperature, cooling the adsorption material, raising the pressure of the oven to normal pressure, weighing the adsorption material, and circularly desorbing the adsorption material for 100 times to obtain the adsorption capacity of the adsorption material.
The adsorption capacity (qe) of the adsorbent material is calculated by the following formula:
qe＝(m2-m1)/m1
wherein: qe is the mass of oil gas adsorbed by the unit mass adsorbing material, g/g; m1 represents the mass (g) of the adsorbent before adsorption; m2 represents the mass (g) of the adsorbent after saturation.
TABLE 1 Performance test values of examples and comparative examples
As can be seen from the above table, the difference between the adsorption amounts of the examples and the comparative examples is small for the first time, but the adsorption amount of the example to the n-pentadecane after 100 times of adsorption-desorption is better than that of the comparative example, especially the comparative example 2, and the main reason is probably that the examples are more firmly combined by the adsorption force of the opposite charges when the two are mixed by the positive charges on the surface of the base material; meanwhile, the surface of the base material is corroded with grains, friction force is increased, adhesive force of the binder is stronger, and the molecular sieve can be firmly attached to the base material by combining the electric adsorption force, so that the service life of the adsorption material is prolonged, multiple times of desorption regeneration can be achieved, and the utilization rate is higher. In addition, the analysis of comparative example 1 shows that the lubricant added in the example facilitates subsequent processing of the adsorbent material, and has no cracks at the boundary and less defective products.
In the description of the embodiments of the present invention, it should be understood that "-" and "-" indicate the same range of two numerical values, and the range includes the endpoints. For example: "A-B" means a range of greater than or equal to A and less than or equal to B. "A to B" means a range of not less than A and not more than B.
In the description of the embodiments of the present invention, the term "and/or" herein is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The above description is only a preferred embodiment of the present invention, and the technical solutions that achieve the objects of the present invention by basically the same means are all within the protection scope of the present invention.
Claims (10)
1. An exhaust gas adsorption material, which is characterized by comprising the following raw materials: the organic-inorganic composite material comprises a molecular sieve, a lubricant, a binder, a solvent and a carrier, wherein the carrier at least comprises a matrix material, and the surface of the matrix material is positively charged through a solution A.
2. The exhaust gas adsorbing material according to claim 1, wherein the solution a is a cationic surfactant solution.
3. The exhaust gas adsorbent material according to claim 1, wherein the lubricant is lactic acid.
4. The exhaust gas adsorption material according to claim 1, wherein the mass ratio of the molecular sieve, the lubricant, the binder, the solvent and the carrier is 1:0.01-0.5: 1-4: 1-10: 0.03-0.2.
5. The exhaust gas adsorbing material according to claim 1, wherein the binder is an inorganic binder.
6. A preparation method of an exhaust gas adsorption material is characterized by comprising the following steps:
the method comprises the following steps: mixing a molecular sieve, a lubricant and a binder, adding a solvent, and uniformly stirring to obtain mixed slurry;
step two: preparing a solution A from a cationic surfactant, adding a base material into the solution A for dipping, and taking out to obtain a precursor of the base material;
step three: dipping the precursor of the base material in the step two into the mixed slurry in the step one to load the mixed slurry on the surface of the base material to prepare an adsorbent;
step four: and (4) repeatedly coating and drying the adsorbent in the third step to obtain the adsorbent.
7. The method for preparing the exhaust gas adsorbing material according to claim 6, wherein in the first step, before mixing the molecular sieve, the lubricant and the binder, the molecular sieve is subjected to activation treatment, specifically, the molecular sieve is subjected to heating treatment, and the heating temperature is controlled at 440 ± 10 ℃ for not less than 12 hours.
8. The method for preparing the exhaust gas adsorption material according to claim 6, wherein in the second step, before the base material is immersed in the solution A, the method further comprises an additional step of putting the base material in an acid solution to corrode the base material so that a corrosion texture appears on the surface of the base material.
9. The method for preparing the exhaust gas adsorption material according to claim 6, wherein the impregnation in the second step and/or the third step is ultrasonic impregnation.
10. The method for preparing an exhaust gas adsorbing material according to claim 6, wherein in the fourth step, the drying is performed at a temperature rise rate of 1-2 ℃/min for 4-5 h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011428866.4A CN112657462A (en) | 2020-12-09 | 2020-12-09 | Waste gas adsorption material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011428866.4A CN112657462A (en) | 2020-12-09 | 2020-12-09 | Waste gas adsorption material and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112657462A true CN112657462A (en) | 2021-04-16 |
Family
ID=75401849
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011428866.4A Pending CN112657462A (en) | 2020-12-09 | 2020-12-09 | Waste gas adsorption material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112657462A (en) |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5464598A (en) * | 1992-11-13 | 1995-11-07 | Klatte; Fred | Method for removing a contaminant from a fluid using a chemically impregnated and coated zeolite |
| CN1216480A (en) * | 1996-03-14 | 1999-05-12 | 埃克森化学专利公司 | Procedure for preparing molecular sieve films |
| CN1311713A (en) * | 1998-07-01 | 2001-09-05 | 奇奥凯姆有限责任公司 | Molecular sieve adsorbent for gas purification and preparation thereof |
| JP2002095964A (en) * | 2000-09-26 | 2002-04-02 | Nichias Corp | Zeolite impregnation slurry and method for producing zeolite-impregnated adsorbent element |
| US20030017936A1 (en) * | 2000-11-01 | 2003-01-23 | Kyung-Byung Yoon | Zeolite-substrate composite comprising a patterned zeolite layer on a substrate and preparation thereof |
| CN102389773A (en) * | 2011-08-20 | 2012-03-28 | 佛山市环保技术与装备研发专业中心 | Manufacture method of molecular sieve honeycomb body for absorbing volatile organic compounds |
| US20150065757A1 (en) * | 2011-06-10 | 2015-03-05 | Clariant Produkte (Deutschland) Gmbh | Composite material composed of a polymer containing fluorine, hydrophobic zeolite particles and a metal material |
| CN105944665A (en) * | 2016-06-21 | 2016-09-21 | 江西博鑫精陶环保科技有限公司 | Preparation method of molecular sieve concentration rotating wheel adsorption packing for treating VOCs |
| CN106268629A (en) * | 2016-08-17 | 2017-01-04 | 吉林大学 | A kind of preparation method and applications of the micro-mesopore molecular sieve diatomite composite material for adsorption process |
| CN107583604A (en) * | 2017-11-02 | 2018-01-16 | 景德镇佳奕新材料有限公司 | A kind of hydrophobicity honeycomb-shaped zeolite material and its preparation method and application |
| CN108160031A (en) * | 2018-01-09 | 2018-06-15 | 苏州苏净环保工程有限公司 | It is a kind of for composite material of purifying low-concentration gaseous pollutant and preparation method thereof |
| CN109851858A (en) * | 2018-06-18 | 2019-06-07 | 浙江大学 | A kind of molecular sieve/fibrous composite and preparation method thereof |
| CN111068619A (en) * | 2019-12-31 | 2020-04-28 | 欧梯恩智能科技(苏州)有限公司 | Composite material for adsorbing volatile organic compounds and preparation method thereof |
| CN111151219A (en) * | 2018-11-08 | 2020-05-15 | 中国科学院大连化学物理研究所 | Monolithic structure adsorbent, preparation method and application thereof |
| CN111672460A (en) * | 2020-06-04 | 2020-09-18 | 济南大学 | Composite modification method of zeolite and application of zeolite in removing nitrate in water |
| CN112390269A (en) * | 2020-11-11 | 2021-02-23 | 天长市润源催化剂有限公司 | Preparation method of molecular sieve for purifying diesel vehicle tail gas |
-
2020
- 2020-12-09 CN CN202011428866.4A patent/CN112657462A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5464598A (en) * | 1992-11-13 | 1995-11-07 | Klatte; Fred | Method for removing a contaminant from a fluid using a chemically impregnated and coated zeolite |
| CN1216480A (en) * | 1996-03-14 | 1999-05-12 | 埃克森化学专利公司 | Procedure for preparing molecular sieve films |
| CN1311713A (en) * | 1998-07-01 | 2001-09-05 | 奇奥凯姆有限责任公司 | Molecular sieve adsorbent for gas purification and preparation thereof |
| JP2002095964A (en) * | 2000-09-26 | 2002-04-02 | Nichias Corp | Zeolite impregnation slurry and method for producing zeolite-impregnated adsorbent element |
| US20030017936A1 (en) * | 2000-11-01 | 2003-01-23 | Kyung-Byung Yoon | Zeolite-substrate composite comprising a patterned zeolite layer on a substrate and preparation thereof |
| US20150065757A1 (en) * | 2011-06-10 | 2015-03-05 | Clariant Produkte (Deutschland) Gmbh | Composite material composed of a polymer containing fluorine, hydrophobic zeolite particles and a metal material |
| CN102389773A (en) * | 2011-08-20 | 2012-03-28 | 佛山市环保技术与装备研发专业中心 | Manufacture method of molecular sieve honeycomb body for absorbing volatile organic compounds |
| CN105944665A (en) * | 2016-06-21 | 2016-09-21 | 江西博鑫精陶环保科技有限公司 | Preparation method of molecular sieve concentration rotating wheel adsorption packing for treating VOCs |
| CN106268629A (en) * | 2016-08-17 | 2017-01-04 | 吉林大学 | A kind of preparation method and applications of the micro-mesopore molecular sieve diatomite composite material for adsorption process |
| CN107583604A (en) * | 2017-11-02 | 2018-01-16 | 景德镇佳奕新材料有限公司 | A kind of hydrophobicity honeycomb-shaped zeolite material and its preparation method and application |
| CN108160031A (en) * | 2018-01-09 | 2018-06-15 | 苏州苏净环保工程有限公司 | It is a kind of for composite material of purifying low-concentration gaseous pollutant and preparation method thereof |
| CN109851858A (en) * | 2018-06-18 | 2019-06-07 | 浙江大学 | A kind of molecular sieve/fibrous composite and preparation method thereof |
| CN111151219A (en) * | 2018-11-08 | 2020-05-15 | 中国科学院大连化学物理研究所 | Monolithic structure adsorbent, preparation method and application thereof |
| CN111068619A (en) * | 2019-12-31 | 2020-04-28 | 欧梯恩智能科技(苏州)有限公司 | Composite material for adsorbing volatile organic compounds and preparation method thereof |
| CN111672460A (en) * | 2020-06-04 | 2020-09-18 | 济南大学 | Composite modification method of zeolite and application of zeolite in removing nitrate in water |
| CN112390269A (en) * | 2020-11-11 | 2021-02-23 | 天长市润源催化剂有限公司 | Preparation method of molecular sieve for purifying diesel vehicle tail gas |
Non-Patent Citations (4)
| Title |
|---|
| MATHIEU DIBOUNE ET AL.: ""Efficient Removal of Volatile Organic Compounds by FAU-Type Zeolite Coatings"", 《MOLECULES》 * |
| 刘洪范 编: "《化学实验基础》", 31 December 1981, 山东科学技术出版社 * |
| 奚念朱 等主编: "《药剂学》", 31 May 1980, 人民卫生出版社 * |
| 罗小会 等: ""负载分子筛的蜂窝状陶瓷对VOCs的吸脱附性能"", 《环境工程》 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105344323B (en) | A kind of adsorbent of deep removal organic sulfur compound and preparation method and application | |
| CN102872799B (en) | Preparation method of adsorbent for adsorbing and decomposing indoor harmful gas | |
| CN103285813A (en) | Organic waste gas adsorbent and preparation method thereof | |
| CN107107022A (en) | Adsorbent with microwave absorbing property | |
| CN101306345A (en) | Impregnated activated carbon and its preparation method | |
| CN106975473A (en) | The supported materials catalyst of network structure | |
| CN107413293B (en) | Desulfurizing agent and preparation method and application thereof | |
| KR20080094887A (en) | Improved hydrocarbon adsorption slurry washcoat formulation for use at low temperature | |
| CN109926042B (en) | High-wear-resistance flat plate type denitration catalyst and preparation method thereof | |
| CN107638867A (en) | A kind of sorbent preparation method for being used to remove benzyldithio toluene in insulating oil | |
| CN109647342B (en) | Moisture-proof renewable activated carbon and preparation method thereof | |
| CN108554368A (en) | A kind of preparation method and application of the adsorbent of removing low concentration hydrogen sulphide | |
| CN107999147A (en) | It is a kind of that the method for preparing denitration dearsenic catalyst at the same time is modified with waste and old SCR catalyst | |
| US20120118160A1 (en) | Attrition resistant hardened zeolite materials for air filtration media | |
| CN112657462A (en) | Waste gas adsorption material and preparation method thereof | |
| CN101905144A (en) | Mineral composite air finishing agent and preparation method thereof | |
| KR20130040273A (en) | Absorbent for purifying air, filter comprising the absorbent and method for preparing the filter | |
| CN109092257B (en) | Modified porous alumina formaldehyde adsorbent and preparation method thereof | |
| CN111468069B (en) | Preparation method of molecular sieve adsorbent for gas desulfurization | |
| CN111085239B (en) | Preparation method of honeycomb carrier catalytic material based on molecular sieve | |
| CN113019316A (en) | Integral honeycomb molecular sieve adsorbent capable of being regenerated in circulating mode and preparation method thereof | |
| CN108160031A (en) | It is a kind of for composite material of purifying low-concentration gaseous pollutant and preparation method thereof | |
| CN108201889A (en) | It is a kind of using porous ceramics as the photocatalyst air purifying material of carrier | |
| CN107583616B (en) | Method for adsorbing arsenic in antarctic krill oil | |
| CN105268399B (en) | Room temperature ammonia efficient process material |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210416 |
|
| RJ01 | Rejection of invention patent application after publication |