CN108033460A - A kind of new 3A molecular sieves and preparation method thereof - Google Patents
A kind of new 3A molecular sieves and preparation method thereof Download PDFInfo
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- CN108033460A CN108033460A CN201711429647.6A CN201711429647A CN108033460A CN 108033460 A CN108033460 A CN 108033460A CN 201711429647 A CN201711429647 A CN 201711429647A CN 108033460 A CN108033460 A CN 108033460A
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- 239000002808 molecular sieve Substances 0.000 title claims abstract description 48
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 10
- 239000000843 powder Substances 0.000 claims abstract description 25
- 229910000000 metal hydroxide Inorganic materials 0.000 claims abstract description 15
- 150000004692 metal hydroxides Chemical class 0.000 claims abstract description 15
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 14
- 150000004706 metal oxides Chemical class 0.000 claims abstract description 14
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims abstract description 13
- 239000007921 spray Substances 0.000 claims abstract description 13
- 239000011230 binding agent Substances 0.000 claims abstract description 11
- 238000002156 mixing Methods 0.000 claims abstract description 10
- 230000004913 activation Effects 0.000 claims abstract description 4
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 21
- 239000000243 solution Substances 0.000 claims description 15
- 239000001103 potassium chloride Substances 0.000 claims description 11
- 235000011164 potassium chloride Nutrition 0.000 claims description 11
- 239000000463 material Substances 0.000 claims description 8
- 238000007493 shaping process Methods 0.000 claims description 7
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 6
- 239000011591 potassium Substances 0.000 claims description 6
- 229910052700 potassium Inorganic materials 0.000 claims description 6
- 239000013618 particulate matter Substances 0.000 claims description 4
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 3
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 3
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 2
- 239000011259 mixed solution Substances 0.000 claims description 2
- 239000002245 particle Substances 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims 1
- 238000001035 drying Methods 0.000 abstract description 15
- 238000004519 manufacturing process Methods 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 7
- 239000000203 mixture Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000004480 active ingredient Substances 0.000 abstract description 2
- 238000004064 recycling Methods 0.000 abstract description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 15
- 230000009102 absorption Effects 0.000 description 15
- 238000010521 absorption reaction Methods 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- 239000011521 glass Substances 0.000 description 12
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 10
- 230000003068 static effect Effects 0.000 description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 6
- 239000010457 zeolite Substances 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000000440 bentonite Substances 0.000 description 4
- 229910000278 bentonite Inorganic materials 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 description 3
- 239000000347 magnesium hydroxide Substances 0.000 description 3
- 229910001862 magnesium hydroxide Inorganic materials 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 239000005995 Aluminium silicate Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 150000001336 alkenes Chemical class 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 229910001940 europium oxide Inorganic materials 0.000 description 2
- AEBZCFFCDTZXHP-UHFFFAOYSA-N europium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Eu+3].[Eu+3] AEBZCFFCDTZXHP-UHFFFAOYSA-N 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 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 2
- 239000002502 liposome Substances 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- YCCINMADJOSERY-UHFFFAOYSA-N [O--].[AlH++] Chemical compound [O--].[AlH++] YCCINMADJOSERY-UHFFFAOYSA-N 0.000 description 1
- WRWOVDSMUMEITO-UHFFFAOYSA-N actinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Ac+3].[Ac+3] WRWOVDSMUMEITO-UHFFFAOYSA-N 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000002734 clay mineral Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- GUJOJGAPFQRJSV-UHFFFAOYSA-N dialuminum;dioxosilane;oxygen(2-);hydrate Chemical compound O.[O-2].[O-2].[O-2].[Al+3].[Al+3].O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O GUJOJGAPFQRJSV-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052901 montmorillonite Inorganic materials 0.000 description 1
- 229910000027 potassium carbonate Inorganic materials 0.000 description 1
- 238000000634 powder X-ray diffraction Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B39/00—Compounds having molecular sieve and base-exchange properties, e.g. crystalline zeolites; Their preparation; After-treatment, e.g. ion-exchange or dealumination
- C01B39/02—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof; Direct preparation thereof; Preparation thereof starting from a reaction mixture containing a crystalline zeolite of another type, or from preformed reactants; After-treatment thereof
- C01B39/14—Type A
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C27/00—Joining pieces of glass to pieces of other inorganic material; Joining glass to glass other than by fusing
- C03C27/06—Joining glass to glass by processes other than fusing
- C03C27/10—Joining glass to glass by processes other than fusing with the aid of adhesive specially adapted for that purpose
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2002/00—Crystal-structural characteristics
- C01P2002/70—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data
- C01P2002/72—Crystal-structural characteristics defined by measured X-ray, neutron or electron diffraction data by d-values or two theta-values, e.g. as X-ray diagram
Abstract
The invention belongs to molecular sieve art, a kind of new 3A molecular sieves, it is to mix 4A molecular sieves, metal oxide or metal hydroxides, rare earth oxide and binding agent for raw material, by turning, pot sprays drying after saline solution containing K is molded, activation is prepared.Preparation process of the present invention is simple, low cost and environmental protection.The usage amount of 4A original powders is reduced in raw material dispensing, the cheaper metal oxide of selection production cost or metal hydroxides do drier active ingredient, and a certain amount of rare-earth oxide is added to improve the heat endurance of sample, after adding Binder Composition mixing, recycling contains K+Spray solution is molded, and new 3A molecular sieves are made after dry activate.
Description
Technical field
The invention belongs to molecular sieve art, more particularly to A type molecular sieve and its preparation process.
Background technology
With the high speed development of Chinese national economy and the progress of science and technology, the requirement to building energy conservation is more and more tighter
Lattice.The building energy consumption in China accounts for the 1/4 of national energy consumption total amount.Building energy conservation is related to all too many levels.Reality both domestic and external
Proof is trampled, improves the heat-insulating property of buildings exterior-protected structure, the heat-insulating property for particularly improving window is to prevent building heat
Lost most economical, most efficient method.Application of the hollow glass in building plays the effect of key.The life of hollow glass
Production technology originates from the U.S. earliest, since it has prominent unique function-energy saving, in North America, European Countries, Japan, South Korea
Promoted rapidly, produced, applied with countries such as China.Its international market is increasingly good, and the U.S. is hollow in the international market
Glass production big country, and one of consumption big country.From the point of view of domestic market, hollow glass production and usage amount present uptrend state：
70.3 ten thousand m of nineteen ninety-five2, 95.98 ten thousand m in 19972, usage amount exceedes 5,000,000 m within 20002.It can be seen that hollow glass is in state
There is vast potential for future development in inside and outside market.
Hollow glass is made of glazing compound, interval box and drier.Molecular sieve wherein for hollow glass is done
Drying prescription has two classes：A classes and X classes, its main function is the moisture adsorbed in air layer, so will consider point when selecting molecular sieve
The water absorbing capacity of son sieve.It it is 21 DEG C in temperature, when condensation point is -40 DEG C, the water absorbing capacity highest of 13X, every 100 grams of drier can
16 grams of water is adsorbed, 4A takes second place, and 3A is minimum, every gram of 13.5 grams of water of absorption, it can be seen that it should be that soaking effect is best to select 13X
, but 13X water suctions also adsorb air at the same time, can thus change the gas flow in hollow glass, so as to cause the flexure of glass.
And 3A only adsorbs water since its aperture is smaller, air is not adsorbed, that is, selecting can be in the same of effectively absorption hollow glass moisture
When, and glass is not impacted, therefore research 3A molecular sieves have extremely important meaning.
At the same time, the dry system of some needs for such as alkene, although 4A, 5A, 13X molecular sieve have high water absorption
It is widely used in various drying processes, but these molecular sieves can also adsorb other molecules while water suction, i.e., some alkene
The drying system of hydrocarbon can only use 3A molecular sieves because 3A molecular sieves can only adsorbed water molecule without adsorbing other materials, therefore efficiently
3A molecular sieves have vast potential for future development.
And existing type body 3A molecular sieves mainly have two kinds of production technologies：First, conventional preparation techniques, former with synthesis 4A zeolites
Powder carries out ion exchange with KCl solution, obtains 3A zeolites, then is incorporated clay, using the moulding process such as rolling and extruding, is manufactured into
Bar shaped or spherical product, by drying and calcination for activation, obtain zeolite product；Greatest problem existing for the technique is its KCl
Consumption it is huge, 1 ton of 3A zeolites of production will generally consume 500 ~ 1000Kg potassium chloride, while be handed over using 4A original powders
Change, it is necessary to being beaten, filtering, washing and corresponding equipment is completed to operate, process is cumbersome；Second, it is directed to above-mentioned technical study person
The production new technique developed, first 4A zeolites and clay mineral are mixed as introduced in CN103721673A, Ran Houzao
Ball, extruded moulding, then K is carried out again after drying roasts+Ion exchange, roasts to obtain type body 3A molecules by secondary drying
Sieve, although the technique reduces the usage amount of KCl to a certain extent, still has and exchanges washing process and waste liquid generation.
CN105800638A proposes a kind of solid liposome nanoparticle technique on the basis of above-mentioned technique：I.e. by 4A molecules
It is raw material that original powder, which is sieved, with the electrolyte containing potassium element and clay, and after adding water mixed-forming, roasting direct forms.The process program
Provide a kind of 3A molecular sieve preparation methods of low energy consumption and zero-emission.But still had using the 3A molecular sieve desiccants of pure phase
Production cost is high, and still there are contaminated wastewater environmental problem for the synthesis of 4A original powders.
The content of the invention
The problem to be solved in the present invention is：Overcome traditional 3A molecular sieve productions consumption sylvite amount big, the consumption energy is more,
The problems such as seriously polluted, use for reference solid liposome nanoparticle technique, adjustment material proportion, process, there is provided a kind of new 3A molecules
Sieve, product stability is excellent, in addition provides its preparation process, and production cost is low, environmental-friendly.
The present invention is that technical solution is used by solving the above problems：A kind of new 3A molecular sieves, it is by 4A molecules
Sieve original powder, metal oxide or metal hydroxides, rare earth oxide are mixed with binding agent, contain K by sprinkling+Solution is molded
Afterwards, then activate and be made by high-temperature roasting.A kind of new 3A molecular sieves, the parts by weight of its constitutive material are：4A molecules
Sieve original powder 40-80, metal oxide or metal hydroxides 5-20, rare earth oxide 0.2-2, binding agent 15-40.
A kind of new 3A molecular sieves, the parts by weight of its constitutive material are：4A molecular screen primary powders 40-80, metal oxide
Or metal hydroxides 10-15, rare earth oxide 0.2-1, binding agent 20-30.
It is described to contain K+Solution is potassium chloride, potassium carbonate, saleratus, one kind in potassium sulfate and more than one mixing are molten
Liquid, the part by weight that its contained potassium element accounts for new 3A molecular sieves are less than 9 .6%, it is preferable that the weight ratio containing potassium element is
3%-5%.
A kind of preparation method of new 3A molecular sieves of the present invention, step include：
1) mix：4A molecular screen primary powders, metal oxide or metal hydroxides, rare earth oxide and binding agent are mixed in proportion
Close；
2) it is molded：Containing K+Spray solution is turning in pot on mixed material, rolls shaping and 0.5-2.0mm diameter particles are made；
3) it is dry：Particulate matter is placed in baking oven, 100 ± 10 DEG C, dry 1-2h；
4) activate：Dried particulate matter is placed in Muffle furnace, 550 ± 25 DEG C, activates 1-2h, and new 3A molecular sieves are made.
The beneficial effects of the invention are as follows：Composition of raw materials is rationally simple, and performance, which is stablized, to be improved, obtained 3A molecular sieves,
(1) under 25 DEG C and a standard atmosphere condition, selection absorption of the 3A molecular sieves to water and the selection to nitrogen
Adsorptivity weight ratio is more than 100；
(2) under 25 DEG C and a standard atmosphere condition, the 3A molecular sieves static water absorption rate is more than 19%；
(3) under 25 DEG C and a standard atmosphere condition, the 3A molecular sieves are more than in relative humidity 11%, static water absorption rate
16%；
(4) the 3A molecular sieves described in are suitable with 3A molecular sieve absorption properties obtained by hydrothermal solvent method.
The new 3A molecular sieves of the present invention, mainly apply hollow glass interlayer adsorbent.
Preparation process of the present invention is simple, low cost and environmental protection.The usage amount of 4A original powders, selection are reduced in raw material dispensing
The cheaper metal oxide of production cost or metal hydroxides do drier active ingredient, and add a certain amount of rare earth
Metal oxide improves the heat endurance of sample, and after adding Binder Composition mixing, recycling contains K+Spray solution is molded, warp
New 3A molecular sieves are made after dry activation.
Brief description of the drawings：
3A molecular sieves before and after Fig. 1 addition rare earth oxides（Embodiment 3 and 4）X-ray powder diffraction（XRD）Contrast collection of illustrative plates.
Embodiment：
The present invention is described in further detail with reference to specific embodiment, but the present invention is not limited only to specific embodiment.
Embodiment 1：
By 4A original powders, lanthana, rod soil by weight 74:1:25 mixing, spray K by turning pot2CO3Solution is molded spherical products,
Then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into 550 ± 25 DEG C of Muffle furnace, activates 1-2h, the new of the present invention is made
Spherical 3A molecular sieves.
Embodiment 2：
By 4A original powders, magnesium hydroxide, lanthana, rod soil by weight 55:19:1:25 mixing, spray K by turning pot2CO3Solution into
Type spherical products, then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into 550 ± 25 DEG C of Muffle furnace, activates 1-2h, be made
The novel ball 3A molecular sieves of the present invention.
1 4A original powders of table and the quotation contrast table of metal oxide or metal hydroxides
| Raw material | Price（Member/T） |
| 4A powder（Auxiliary agent） | 3500 |
| （Hydrogen）Magnesia | 1500 |
| （Hydrogen）Aluminium oxide | 3000 |
Table 2 is added before and after metal oxide or metal hydroxides（Examples 1 and 2）The 24h static water absorptions of 3A molecular sieves
| Sample | 24h static water absorptions（wt%） |
| 1 sample of embodiment | 19.8 |
| 2 sample of embodiment | 19.7 |
The raw material quotation of 1 and 2 sample of comparative example and 24h static water absorptions result are understood, by part 4A molecular screen primary powders
After replacing with metal oxide or metal hydroxides or metal hydroxides, while cost is reduced, its absorption property is simultaneously
It is not affected by influence.
Embodiment 3：
By 4A original powders, aluminium oxide, bentonite by weight 60:15:25 mixing, spray KCl solution shaping spherical products by turning pot,
Then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into 550 ± 25 DEG C of Muffle furnace, activates 1-2h, the new of the present invention is made
Spherical 3A molecular sieves.
Embodiment 4：
By 4A original powders, aluminium oxide, lanthana, bentonite by weight 60:15:0.2:25 mixing, spray KCl by turning pot:Solution
Spherical products are molded, then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into 550 ± 25 DEG C of Muffle furnace, activates 1-2h, system
Into the novel ball 3A molecular sieves of the present invention.
The XRD spectra of 3 and 4 sample of comparative example is understood, after adding a small amount of rare-earth oxide, its XRD diffraction is special
There is reinforced partly at sign peak, it illustrates that its crystallinity increases, i.e., improves the hydrothermal stability of product to a certain extent.
Embodiment 5：
By 4A original powders, aluminium oxide, lanthana, bentonite by weight 60:15:0.2:25 mixing, by turn pot spray KCl and
K2SO4(mole metering ratio 2:1) mixed solution shaping spherical products, then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into
550 ± 25 DEG C of Muffle furnace, activates 1-2h, and the novel ball 3A molecular sieves of the present invention are made.
Embodiment 6：
By 4A original powders, aluminium oxide, europium oxide, bentonite by weight 58:17:0.2:25 mixing, spray KHCO by turning pot3Salt is molten
Liquid is molded spherical products, and then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into 550 ± 25 DEG C of Muffle furnace, activates 1-2h,
The novel ball 3A molecular sieves of the present invention are made.
Embodiment 7：
By 4A original powders, magnesium hydroxide, aluminium oxide, actinium oxide, kaolin, montmorillonite by weight 55:10:10:0.5:13:12 is mixed
Close, spray KCl solution shaping spherical products by turning pot, then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into Muffle furnace
550 ± 25 DEG C, 1-2h is activated, the novel ball 3A molecular sieves of the present invention are made.
Embodiment 8：
By 4A original powders, magnesium hydroxide, lanthana, europium oxide, rod soil, kaolin are by weight 58:17:0.2:0.2:13:12 is mixed
Close, spray K by turning pot2CO3Solution is molded spherical products, and then in 100 ± 10 DEG C of drying box, dry 1-2h, is put into Muffle furnace
550 ± 25 DEG C, 1-2h is activated, the novel ball 3A molecular sieves of the present invention are made.
The 3A molecular sieves of above-mentioned gained, after testing function admirable：
(1) under 25 DEG C and a standard atmosphere condition, the selection absorption to water and the Selective adsorption weight ratio to nitrogen
More than 100；
(2) under 25 DEG C and a standard atmosphere condition, static water absorption rate is more than 19%；
(3) under 25 DEG C and a standard atmosphere condition, in relative humidity 11%, static water absorption rate is more than 16%；
It is suitable with hydrothermal solvent method gained 3A molecular sieve absorption properties.
Claims (6)
- A kind of 1. new 3A molecular sieves, it is characterised in that：It is by 4A molecular screen primary powders, metal oxide or metal hydroxide Thing, rare earth oxide are mixed with binding agent, contain K by sprinkling+After solution shaping, then activate and be made by high-temperature roasting.
- 2. a kind of new 3A molecular sieves according to claim 1, it is characterised in that the parts by weight of its constitutive material are：4A points Son sieve original powder 40-80, metal oxide or metal hydroxides 5-20, rare earth oxide 0.2-2, binding agent 15-40.
- 3. a kind of new 3A molecular sieves according to claim 1, it is characterised in that the parts by weight of its constitutive material are：4A points Son sieve original powder 40-80, metal oxide or metal hydroxides 10-15, rare earth oxide 0.2-1, binding agent 20-30.
- A kind of 4. new 3A molecular sieves according to claim 1, it is characterised in that：It is described to contain K+Solution is potassium chloride, carbonic acid One kind and more than one mixed solution in potassium, saleratus, potassium sulfate, the part by weight of its contained potassium element are less than 9 .6%.
- A kind of 5. new 3A molecular sieves according to claim 4, it is characterised in that：Weight ratio containing potassium element is 3%- 5%.
- 6. according to a kind of preparation method of any new 3A molecular sieves of claim 1-5, step includes：Mixing：4A molecular screen primary powders, metal oxide or metal hydroxides, rare earth oxide and binding agent are mixed in proportion Close；Shaping：Containing K+Spray solution is turning in pot on mixed material, rolls shaping and 0.5-2.0mm diameter particles are made；It is dry：Particulate matter is placed in baking oven, 100 ± 10 DEG C, dry 1-2h；Activation：Dried particulate matter is placed in Muffle furnace, 550 ± 25 DEG C, activates 1-2h, and new 3A molecular sieves are made.
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| CN (1) | CN108033460A (en) |
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Application publication date: 20180515 |