CN110026151A - Method for improving adsorption capacity and strength of binderless nalsx molecular sieve - Google Patents
Method for improving adsorption capacity and strength of binderless nalsx molecular sieve Download PDFInfo
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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
- B01J20/16—Alumino-silicates
- B01J20/18—Synthetic zeolitic molecular sieves
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- 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
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3007—Moulding, shaping or extruding
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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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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/305—Addition of material, later completely removed, e.g. as result of heat treatment, leaching or washing, e.g. for forming pores
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/3078—Thermal treatment, e.g. calcining or pyrolizing
Abstract
The invention discloses a method for improving the adsorption capacity and strength of a binderless nalsx molecular sieve. The preparation method comprises the following steps: the method comprises the steps of taking nalsx molecular sieve raw powder, white carbon black and kaolin as raw materials, adding a pore-forming agent, and preparing the non-adhesive nalsx molecular sieve through procedures of mixing and forming, drying and roasting, water absorption, sodium hydroxide treatment, secondary drying and roasting and the like. Compared with the binder which is completely kaolin, the adsorption capacity and strength of the molecular sieve can be obviously improved by using kaolin and white carbon black as the binder. When the mass content of nalsx raw powder is 66-84%, the mass content of white carbon black is 5-8%, the mass content of kaolin is 10-25%, and the mass content of pore-forming agent is 1%, the water absorption capacity of the prepared molecular sieve is 31.9-33.3%, which accounts for 92-98% of the water absorption capacity of pure nalsx raw powder; when the water absorption capacity of the 1.5mm columnar binderless molecular sieve is 31.9 percent, the strength reaches 60N.
Description
Technical field
The invention patent belongs to molecular sieve adsorbent material preparation field more particularly to a kind of raising binder free nalsx points
The method of son sieve adsorbance and intensity.
Background technique
Nalsx(silica is that 2) powder is since its sial is relatively low with alumina molar ratio, with larger after calcination activation
Water adsorption capacity, burn lose it is larger, about 23~24% or so；Kaolin (purity is greater than 90%) is roasted at 600~700 DEG C of high temperature
Afterwards, it burns and loses 15% or so.It is weightless when due to the two roasting during preparing binder free nalsx molecular sieve using kaolin
Differ larger, material shrinking percentage is larger, causes intensity not high.
White carbon black, can as dissolvable silicate is generated after a kind of amorphous silica, with sodium hydroxide lye effect
To provide silicon source for Zeolite synthesis.White carbon black water content is generally 2~3% or so, weightless less after high-temperature roasting.
The patents such as domestic patent CN1234782A, CN106698458A, CN101524637A, CN107159105A are mainly adopted
With can zeolitization binder converted, can zeolitization binder be mainly that kaolin or kaolin are mixed with other clays
Object.With kaolin content increase, due to washed kaolin convert molecular sieve when, conversion ratio is not high, prepare molecular sieve water absorption compared with
It is low.Foreign study scholar is also mainly converted using washed kaolin, using white carbon black rain kaolin, enhance intensity of molecular sieve with
Adsorbance has no that correlative study is reported.
Existing inventive technique, mainly using washed kaolin as binder, contains during kaolin is converted into x type molecular sieve
Amount typically constitutes from the 10~15% of mixture gross mass, after forming high-temperature roasting, when carrying out aging crystallization using lye, passes through addition
Waterglass, soluble silicon etc. provide silicon source to prepare molecular sieve, and since solution viscosity is larger, silicon ion enters from molding mass surface
Internal slower, nucleus generating rate is slow, causes conversion ratio lower, and converted product adsorbance and intensity are lower, can not obtain strong
Degree and all very high Adhesive-free Molecular Sieve of water absorption.This patent is using nalsx original powder as active component, with kaolin and white carbon black
White carbon black is added in mixing since the specific surface area of white carbon black is larger for binder, silicon source may be uniformly dispersed in molding mass
Inside changes kaolin dispersion performance in mixture, and lye ion can rapidly enter inside material, in lye and molding mass
White carbon black fast reaction after portion's dissolution, provides more x type nucleus for the molecular sieve of synthesis；Meanwhile after introducing white carbon black, Ke Yiti
The ratio of the water and crystallization quality of material that are added in formula when high crystallization is conducive to lye in material and transmits, improves crystallization process
Middle sample homogeneity；It is viscous with the nothing all using kaolin conversion by high-purity nalsx molecular sieve of kaolin and white carbon black conversion
Knot agent molecule sieve is compared, and the molecular sieve water absorption and intensity of preparation are higher, and high water absorption and nothing that is high-intensitive and depositing can be made
Binder molecular sieve.
Summary of the invention
This patent is using nalsx molecular sieve powder, white carbon black and kaolin as raw material, it is characterised in that:
(1) ingredient: a certain proportion of kaolin, white carbon black, nalsx molecular sieve powder are subjected to ingredient with pore creating material and mixed；
(2) it forms: pelletizing molding being carried out using granulating disc or banded extruder carries out extruded moulding；
(3) primary drying roasts: drying under cryogenic, then carries out high-temperature roasting；
(4) saturation water suction: spare after material water suction saturation after roasting；
(5) Crystallizing treatment base extraction: is carried out using sodium hydroxide lye；
(6) redrying roasts: roasting is dried in sample after crystallization again, tests its water absorption and intensity, and with pure nalsx
Original powder water absorption is compareed.
The ingredient mixing, which is characterized in that nalsx original powder mass content is 66~84%, hard charcoal black substance in the mixing
When amount content is 5~8%, kaolin mass content is 10~25%, pore creating material mass content is 1%；The kaolin purity >=
92%, white carbon black purity >=97%；Pore creating material can be the organic matters such as sodium carboxymethylcellulose, starch, lignin；
The high-temperature roasting, which is characterized in that the roasting condition is to roast 2~4 hours at 600~650 DEG C；
The base extraction, which is characterized in that when crystallization in molding mass with sodium oxide molybdena in mixed solution, aluminium oxide, silica with
Water meets following condition: silica is 2.8~3.5 with alumina molar ratio；Water and sodium oxide molybdena molar ratio are 40~50；Sodium oxide molybdena
It is 1~1.5 with oxidation silicon mol ratio.20~30 DEG C aging 10~14 hours, 85~95 DEG C crystallization 7~15 hours；
The drying and roasting, which is characterized in that the after baking temperature is 600~650 DEG C；
Prepare zeolite product it is characterized in that, water absorption be 31.9~33.3%, be pure nalsx original powder water absorption 92~
98%；When 1.5mm column Adhesive-free Molecular Sieve water absorption is 31.9%, intensity reaches 60N.
Present invention has an advantage that
When routine techniques is using washed kaolin synthesis Adhesive-free Molecular Sieve, in order to obtain the high binder free molecule of water absorption
Sieve can only be such that kaolin additive amount reduces, cause intensity of molecular sieve lower since kaolin conversion ratio is low.The present invention is by adopting
With kaolin and white carbon black binder, kaolin quality accounts for the 10~25% of gross mass, by adding white carbon black, improves kaolinite
Dispersibility of the soil in original powder, is conducive to kaolinic conversion；In addition, being sieved through being converted into nalsx molecule using washed kaolin
Cheng Zhong, during converting x type molecular sieve due to binder, it is 1~2 that the water-sodium ratio needed, which is generally 40~50, basicity, if improving
Water-sodium ratio is easy to generate remaining A type stray crystal in crystallization process, when washed kaolin content is 10~15%, in crystallization process
In, water and solid material mass ratio are lower, and close to 1, especially working as kaolin content is 10%, when using column molecular sieve crystallization,
It (is easy to generate A type stray crystal using high water-sodium ratio) when water-sodium ratio is low, water cannot cover molecular sieve, cause partial material brilliant
Change, causes crystallization uneven, be unfavorable for aqueous slkali diffusion transport, sample is easily broken in whipping process, influences sample crystallization
Uniformity.By add white carbon black, with all using Kaolin binder compared with, when water-sodium ratio is identical, water and solids
Material ratio is relatively large, is conducive to that the material stirring in crystallization process is uniform, improves the uniformity of final crystallization sample.By adding
Enter suitable white carbon black, converts big adsorbance and high-intensitive binder free nalsx molecular sieve for kaolin and white carbon black, it can
Big water absorption and Adhesive-free Molecular Sieve that is high-intensitive and depositing is made.
Detailed description of the invention
Fig. 1 binder free sample 1-1 SEM figure
Fig. 2 binder free sample 1-5 SEM figure
Fig. 3 binder free sample 2-1 SEM figure
Fig. 4 binder free sample 2-3 SEM figure
Fig. 5 binder free sample 5-1 SEM figure
The binder free sample and pure NaLSX powder XRD diagram that Fig. 6 is in white carbon black 5%, the native content of difference synthesizes.
Specific embodiment
The water absorption of molecular sieve is detected by national standard GB/T-6287 in the present embodiment.Intensity of molecular sieve test uses intelligent
Grain strength tester.
Embodiment 1
By kaolin (mass fraction accounts for 10%, purity 92%), white carbon black (mass fraction accounts for 5%, purity 94%), pore creating material
After (mass fraction 1%) and nalsx molecular screen primary powder (mass fraction accounts for 86%) mixing are uniform, using banded extruder extrusion, diameter
1.5mm, after drying, in 650 DEG C of roasting 2h, in air after the water suction of exposure saturation.By nalsx molecular sieve after saturation water suction
Ball is added to water, sodium hydroxide, in sodium metaaluminate mixed solution.When aging crystallization in molding mass with sodium oxide molybdena in mixed solution,
Aluminium oxide, silica and water content meet following condition: silica and alumina molar ratio are 2.8~3.5；Water rubs with sodium oxide molybdena
You are than being 40~50；Sodium oxide molybdena and oxidation silicon mol ratio are 1~1.5.20~30 DEG C aging 10~14 hours, at 85~95 DEG C
Crystallization 7~15 hours；After washed drying and roasting, sample 1-1 is obtained.Sample 1-1 is 25 DEG C, under 75% relative humidity in temperature, sample
Product water adsorption amount reaches 33.3%, and pure nalsx molecular screen primary powder water absorption is 34%, and sample 1-1 accounts for the water suction of nalsx molecular screen primary powder
The 98% of amount.Intensity is 22N.
Embodiment 2
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 10%, 2%, 87% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 1-2 water suction 33% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx points
The 97% of son sieve original powder water absorption.Intensity is 16N.
Embodiment 3
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 10%, 8%, 81% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 1-3 water suction 33.3% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx
The 98% of molecular screen primary powder water absorption.Intensity is 20N.
Embodiment 4
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 10%, 9%, 80% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 1-4 water suction 33.3% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx
The 98% of molecular screen primary powder water absorption.Sample crackle is more after molding, frangible.Intensity is 16N.
Reference examples 1
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 10%, 0%, 89% respectively, silicon is supplemented using waterglass
Source, remaining condition is constant, and formula is fixed with aging crystallization condition, sample 1-5 water suction 32% is made, pure nalsx molecular screen primary powder is inhaled
Water is 34%, accounts for the 94% of nalsx molecular screen primary powder water absorption.Sample strength is 13N.
By example 1~4 and reference examples 1, can obtain when kaolin mass fraction is 10%, white carbon black content is 5~8%, system
Obtaining Adhesive-free Molecular Sieve sample water absorption is 33.3%, and intensity has reached 20~22N or so, and water absorption and intensity are better than pure height
The Adhesive-free Molecular Sieve sample 1-4 of ridge soil preparation.Fig. 1 is compareed with Fig. 2 to be obtained, the newly-generated crystalline substance in the surface Nalsx in 1-1 sample
Body corner angle are relatively clear, and in octahedronlike, crystallization is preferable.Crackle shape is presented in the surface Nalsx in 1-5 sample, and corner angle are unintelligible, say
Bright kaolin generates metakaolin after roasting and fails complete crystallization, and crystal effect is bad.It will be appreciated from fig. 6 that raw in embodiment 1
At crystal compare with pure Nalsx powder it is found that mutually being generated without stray crystal.
Embodiment 5
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 15%, 5%, 79% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 2-1 water suction 32.6% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx
The 96% of molecular screen primary powder water absorption.Sample strength is 37N.
Embodiment 6
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 15%, 8%, 76% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, it is 32.6% that sample 2-2 water absorption, which is made, and pure nalsx molecular screen primary powder water absorption is 34%, is accounted for
The 96% of nalsx molecular screen primary powder water absorption.Sample strength is 35N.
Reference examples 2
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 15%, 0%, 84% respectively, silicon is supplemented using waterglass
Source, remaining condition is constant, and formula is fixed with aging crystallization condition, and it is 31.3% that sample 2-3 water absorption, which is made, pure nalsx molecular sieve
Original powder water absorption is 34%, accounts for the 92% of nalsx molecular screen primary powder water absorption.Sample strength is 30N.
It can be obtained when kaolin mass fraction is 15%, white carbon black content is 5~8%, be made by example 5~6, reference examples 2
Adhesive-free Molecular Sieve sample water absorption is 32.6%, and intensity has reached 35~37N or so, and water absorption and intensity are better than pure kaolinite
The Adhesive-free Molecular Sieve sample 2-3 of soil preparation.Fig. 3 is compareed with Fig. 4 to be obtained, newly-generated most in the surface Nalsx in 2-1 sample
Number crystal corner angle are relatively clear, in octahedronlike.Crackle shape is presented in the surface Nalsx in 2-3 sample, and corner angle are unintelligible, mainly
Fail complete crystallization since kaolin generates metakaolin after roasting, crystal effect is bad.It will be appreciated from fig. 6 that in embodiment 5
The crystal of generation is compareed with pure Nalsx powder it is found that mutually generating without stray crystal.
Embodiment 7
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 20%, 5%, 74% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, it is 32% that sample 3-1 water absorption, which is made, and pure nalsx molecular screen primary powder water absorption is 34%, is accounted for
The 94% of nalsx molecular screen primary powder water absorption.Sample strength is 42N.
Reference examples 3
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 20%, 0%, 79% respectively, silicon is supplemented using waterglass
Source, remaining condition is constant, and formula is fixed with aging crystallization condition, and it is 31% that sample 3-2 water absorption, which is made, pure nalsx molecular screen primary
Powder water absorption is 34%, accounts for the 91% of nalsx molecular screen primary powder water absorption.Sample strength is 35N.
It can be obtained by embodiment 7 and reference examples 3, when kaolin mass fraction is 20%, white carbon black content is 6%, nothing is made
The water suction of binder sieve sample is 32%, and intensity has reached 42N or so, and water absorption and intensity are better than the nothing of washed kaolin preparation
Binder sieve sample 3-2.It will be appreciated from fig. 6 that the crystal generated in embodiment 7 is compareed with pure Nalsx powder it is found that without stray crystal
Mutually generate.
Embodiment 8
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 25%, 8%, 66% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 4-1 water suction 31.3% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx
The 92% of molecular screen primary powder water absorption.Sample strength is 55N.
Embodiment 9
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 25%, 5%, 69% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 4-2 water suction 31.3% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx
The 92% of molecular screen primary powder water absorption.Sample strength is 60N.
Embodiment 10
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 25%, 10%, 64% respectively, remaining condition is constant, matches
Side is fixed with aging crystallization condition, and sample 4-1 water suction 31.3% is made, and pure nalsx molecular screen primary powder water absorption is 34%, is accounted for
The 92% of nalsx molecular screen primary powder water absorption.Sample is not allowed easily molded, has crackle, is easily broken.
Embodiment 11
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 25%, 2%, 72% respectively, remaining condition is constant, formula
It is fixed with aging crystallization condition, sample 4-2 water suction 30.6% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx
The 90% of molecular screen primary powder water absorption.Sample strength is 45N.
Reference examples 4
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 25%, 0%, 74% respectively, silicon is supplemented using waterglass
Source, remaining condition is constant, and formula is fixed with aging crystallization condition, and sample 4-3 water suction 30.3%, pure nalsx molecular screen primary powder is made
Water absorption is 34%, accounts for the 89% of nalsx molecular screen primary powder water absorption.Sample strength is 40N.
It can be obtained by embodiment 8~9 and reference examples 4, when kaolin mass fraction is 25%, white carbon black content is 3%~7%,
Adhesive-free Molecular Sieve sample water absorption 31.3% is made, intensity has reached 55~60N or so, and water absorption and intensity are better than pure height
The Adhesive-free Molecular Sieve sample 4-3 of ridge soil preparation.
Reference examples 5(synthesizes A type molecular sieve using sodium hydroxide solution)
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 10%, 0%, 89% respectively, formed when by aging crystallization
Meet following condition: silica and alumina molar ratio with sodium oxide molybdena, aluminium oxide, silica and water content in mixed solution in material
It is 2；Water and sodium oxide molybdena molar ratio are 40~50；Sodium oxide molybdena and oxidation silicon mol ratio are 1~1.5.95 DEG C crystallization 4~5 hours,
Sample 5-1 water suction 32% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for the 94% of nalsx molecular screen primary powder water absorption.
The SEM figure of sample 5-1 is shown in Fig. 5.
Reference examples 6(synthesizes A type molecular sieve using sodium hydroxide solution)
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 15%, 0%, 84% respectively, formed when by aging crystallization
Meet following condition: silica and alumina molar ratio with sodium oxide molybdena, aluminium oxide, silica and water content in mixed solution in material
It is 2；Water and sodium oxide molybdena molar ratio are 40~50；Sodium oxide molybdena and oxidation silicon mol ratio are 1~1.5.95 DEG C crystallization 4~5 hours,
Sample 6-1 water suction 3O.6% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx molecular screen primary powder water absorption
90%。
Reference examples 7
Kaolin, white carbon black, original powder mass fraction in embodiment 1 are become 20%, 0%, 79% respectively, formed when by aging crystallization
Meet following condition: silica and alumina molar ratio with sodium oxide molybdena, aluminium oxide, silica and water content in mixed solution in material
It is 2；Water and sodium oxide molybdena molar ratio are 40~50；Sodium oxide molybdena and oxidation silicon mol ratio are 1~1.5.95 DEG C crystallization 4~5 hours,
Sample 7-1 water suction 29.6% is made, pure nalsx molecular screen primary powder water absorption is 34%, accounts for nalsx molecular screen primary powder water absorption
87%。
Reference examples 1 and 5, reference examples 2 and 6, reference examples 3 and 7, which compare, to be obtained, using washed kaolin as binder
When, it is better than using sodium hydroxide solution A type soap-free emulsion polymeization using sodium hydroxide and sodium metasilicate mixed solution conversion X-type molecular sieve sample
Agent molecule sieve.Sodium hydroxide solution A type binder free point is better than used using the X-type molecular sieve that white carbon black is converted as silicon source
Son sieve.And Fig. 1 is compareed with Fig. 5 and can be obtained, the presentation of Fig. 1 crystal morphology is octahedronlike, and corner angle are clear, predominantly X-type molecular sieve；Figure
Tetrahedral is presented in crystal morphology in 5, and faceted portions are fuzzy, and it is mainly A type molecular sieve that 5 crystallization of explanatory diagram, which generates sample,.
What has been described above is only a preferred embodiment of the present invention, it is noted that for those skilled in the art,
Without depart from that overall concept of the invention, several changes and improvements can also be made, these also should be considered as of the invention
Protection scope, these all will not influence the effect and patent practicability that the present invention is implemented.
Claims (6)
1. a kind of method for improving binder free nalsx molecular sieve adsorbance and intensity, with nalsx molecular sieve powder, white carbon black
It is raw material with kaolin, it is characterised in that:
(1) by high washed kaolin, high-purity white carbon and nalsx molecular sieve powder, it is mixed ingredient: to add pore creating material progress ingredient
It closes；
(2) it forms: pelletizing molding being carried out using granulating disc or banded extruder carries out extruded moulding；
(3) primary drying roasts: drying, roasts under cryogenic at high temperature；
(4) saturation water suction: spare after material water suction saturation after roasting；
(5) aging Crystallizing treatment alkali process: is carried out in sodium hydroxide lye；
(6) redrying roasts: sample after crystallization is subjected to drying and roasting again, tests its water absorption and intensity, and with it is pure
Nalsx original powder water absorption is compareed.
2. the preparation method according to weighing and require 1, which is characterized in that the molecular sieve powder is nalsx molecular sieve；In mixing
Nalsx original powder mass content is 66~84%, white carbon black mass content is 5~8%, kaolin mass content is 10~25%, pore-creating
When agent mass content is 1%；Kaolin purity >=92%, white carbon black purity >=97%；Pore creating material can be carboxymethyl cellulose
The organic matters such as sodium, starch, lignin.
3. the preparation method according to weighing and require 1, which is characterized in that the roasting condition is to roast 2~4 at 600~650 DEG C
Hour.
4. according to power require 1 described in preparation method, which is characterized in that the base extraction condition is, when crystallization in molding mass
Meeting following condition with sodium oxide molybdena, aluminium oxide, silica and water in mixed solution: silica and alumina molar number be 2.8~
3.5；Water molal quantity and sodium oxide molybdena molal quantity are 40~50；Sodium oxide molybdena molal quantity and silica molal quantity are 1~1.5.
5. the preparation method according to weighing and require 1, which is characterized in that the aging crystallization condition is 20~30 DEG C of agings 10
~14h, 85~95 DEG C of 7~15h of crystallization.
6. the preparation method according to weighing and require 1, which is characterized in that preparing molecular sieve water absorption is 31.9~33.3%, Zhan Chun
The 92~98% of nalsx original powder water absorption；When 1.5mm column Adhesive-free Molecular Sieve water absorption is 31.9%, intensity reaches 60N.
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| CN114177883A (en) * | 2021-12-29 | 2022-03-15 | 洛阳建龙微纳新材料股份有限公司 | Ba/Cs/Ni-LSX molecular sieve and preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114177883A (en) * | 2021-12-29 | 2022-03-15 | 洛阳建龙微纳新材料股份有限公司 | Ba/Cs/Ni-LSX molecular sieve and preparation method and application thereof |
| CN114177883B (en) * | 2021-12-29 | 2023-08-18 | 洛阳建龙微纳新材料股份有限公司 | Ba/Cs/Ni-LSX molecular sieve and preparation method and application thereof |
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