CN103058221A - Method for synthesizing mordenite - Google Patents
Method for synthesizing mordenite Download PDFInfo
- Publication number
- CN103058221A CN103058221A CN2011103246635A CN201110324663A CN103058221A CN 103058221 A CN103058221 A CN 103058221A CN 2011103246635 A CN2011103246635 A CN 2011103246635A CN 201110324663 A CN201110324663 A CN 201110324663A CN 103058221 A CN103058221 A CN 103058221A
- Authority
- CN
- China
- Prior art keywords
- mordenite
- accordance
- directing agent
- structure directing
- alkaline solution
- 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.)
- Granted
Links
Images
Landscapes
- Silicates, Zeolites, And Molecular Sieves (AREA)
- Catalysts (AREA)
Abstract
The invention discloses a method for synthesizing mordenite. The method comprises the steps of firstly treating mordenite with an alkaline solution to prepare a structure-directing agent, stirring inorganic alkalis, aluminium sources, silicon sources and water to synthesize silicon-aluminium gel, then adding the structure-directing agent and obtaining the mordenite after hydrothermal crystallization. The method has the advantages that the mordenite synthesized by the method has a high degree of crystallinity and effectively avoids mixed crystals; and the method is simple and easy to operate, is cheap and available in raw materials, and avoids using toxic and harmful organic template agents.
Description
Technical field
The present invention relates to a kind of synthetic method of mordenite, the method for the low-cost synthesizing flokite of a kind of green belongs to the synthetic field of molecular sieve catalytic material specifically.
Background technology
Mordenite (MOR) is one of human knowledge's zeolite the earliest.The mordenite crystal has two class pore canal system, and a class is to consist of oval 12 yuan of ring main channels by tetra-atomic ring and five-ring (five-ring is preponderated) that the 5-3 structural unit connects, is of a size of 0.695 * 0.581 nm, has the octatomic ring passage to link up between the main channel.Another kind of is the octatomic ring passage, irregular arrangement, and aperture 0.28 nm, general molecule is difficult for turnover.Mordenite has good heat-resisting, acidproof and anti-steam performance, so at industrial sorbent material and petrochemical complex and the fine chemistry industry catalyzer that is widely used as gas or liquid mixture separation.Especially at the oil catalytic field, catalytic performance is excellent in the reaction process such as the esterification of the disproportionation of the disproportionation of aromatic hydrocarbons, isomerization, alkylation, transalkylation, alkane, isomerization, alcohols, etherificate, amination, so paid attention to by people.
The synthetic great majority of mordenite will rely on template, disclose a kind of preparation method of microcrystal mordenites such as CN101519217A.The method is made into mixing solutions with aluminium source, sodium source, template and water, and is with this mixing solutions that Silica Surface is wetting, again synthetic system carried out two sections crystallization under different temperature, finally synthesizes microcrystal mordenites.But owing to use organic ammonium as template, cause synthetic high cost.
CN1050011 A discloses the synthetic of a kind of high silicon mordenite.The method is with industrial raw material synthesizing flokites such as water glass cheap and easy to get, mineral acid, mineral alkali, aluminium salt or aluminates, its principal character is to replace organic amine and add the mordenite crystal seed reducing production costs with inorganic ammonia, but the use of inorganic ammonia still can bring environmental pollution and human body is worked the mischief.
CN1257831A discloses a kind of synthetic method with zeolite of mordenite structure.Should with directly take water glass cheap and easy to get, aluminium salt or aluminate, fluorochemical as raw material, under certain temperature, make the crystallization mordenite by crystallization.Although the method does not use organic ammonium as template, but uses poisonous fluorochemical, all can cause some harm to human body and environment.
CN1843915A discloses a kind of method without the amine synthesizing high silicon content mordenite.The method take the silicon source, aluminium source and deionized water be as raw material, take polyvalent alcohol as additive, hydrothermal crystallizing in the stainless steel cauldron of teflon lined, crystallization temperature are 120～200 ℃, crystallization time is to synthesize mordenite in 12～240 hours.CN1243100A also discloses a kind of synthetic method of high silicon mordenite.The principal character of the method is that to have used low-carbon (LC) alcohols or washing powder be that additive prepares mordenite.This two kinds of methods have all been avoided using expensive organic ammonium template and have been used the surrogate such as alcohols.But the surrogates such as alcohols still can increase synthetic cost, are unfavorable for large-scale commercial production.
CN101033071A discloses a kind of method of synthetic zeolite.The method stirs the synthesis materials such as solid silicon source, aluminium source under the high alkalinity condition, after fully mixing, carry out crystallization in steam, synthesizing flokite.The method can not used template during for the synthesis of mordenite, and this patented method need to be transformed synthesis device, is fit to the study on the synthesis in laboratory, is not suitable for large-scale industrial production.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of method of green synthesizing flokite.The mordenite of the method synthetic high-crystallinity in the situation of not using organic formwork agent.Synthesis material is conventional inorganic materials, does not contain poisonous objectionable impurities, whole preparation process environmental protection, and operation steps is simple.
The synthetic method of mordenite provided by the invention may further comprise the steps:
(1) preparation of structure directing agent
Mordenite is joined in the alkaline solution, wherein the liquid-solid ratio of alkaline solution and mordenite is 10～50 mL/g, preferred 20～30 mL/g, after mixing, under the air tight condition at 80～180 ℃, process 0.5～8.0h for preferred 100～140 ℃, preferred 2.0～4.0h, gained suspension liquid product is structure directing agent;
(2) mordenite is synthetic
According to 3 ~ 10Na
2O:20 ~ 80SiO
2: A1
2O
3: 400 ~ 1800H
2O mole proportioning with mineral alkali, aluminium source, silicon source and water, stirs the synthesizing Si-Al gel, then adds the structure directing agent of step (1) preparation, wherein the add-on of structure directing agent in mordenite and the silicon source that is added with SiO
2The mass ratio of meter is 0.005～0.060, and is preferred 0.010～0.040, and then under 140～220 ℃ of temperature, crystallization 10～50h obtains mordenite through separation, washing and drying.
According to synthetic method of the present invention, wherein the mordenite described in the step (1) is sodium type mordenite, its SiO
2/ A1
2O
3Mol ratio is 10～100.
The described alkaline solution of step (1) can be one or more the mixing solutions in NaOH, KOH and the LiOH aqueous solution.The concentration of alkaline solution is 0.1～5.0 mol/L, preferred 0.5～2.0 mol/L.The described churning time that mixes is generally 10～60min, preferred 20～40min.
Mineral alkali described in the step (2) can be one or more among NaOH, KOH, the LiOH; The aluminium source can be one or more in sodium aluminate, aluminium hydroxide, Tai-Ace S 150, aluminum chloride, aluminum nitrate, the aluminum oxide; The silicon source can be one or more in White Carbon black, silica gel, silicon sol, the water glass.
Operation steps described in the step (2) is: at first be that mineral alkali, aluminium source is soluble in water, add silicon source, vigorous stirring 10～60min, preferred 20～40min behind dissolve complete; Then add the structure directing agent according to step (1) preparation, vigorous stirring 10～60min, preferred 20～40min.Then pack into and carry out crystallization in the closed reactor, temperature of reaction is 140～220 ℃, and preferred 150～190 ℃, the reaction times is 10～50h, preferred 17～30h.Obtain product through separation, washing and drying more at last.Described separation and washing are routine operation well known to those skilled in the art.As separating the method for filtering can taked, washing generally refers to use deionized water wash.Generally include separating for several times and washing operation, be generally 1～6 time.Drying conditions generally is dry 5 ~ 15h under 100 ~ 140 ℃ of conditions.
The mordenite synthetic according to the inventive method has following feature: synthetic product characterizes through x-ray diffractometer, and its crystal formation is pure mordenite, and degree of crystallinity is high, does not contain other Crystal impurity.
Mordenite provided by the invention can be used as the sorbent material of gas, liquid mixture separation, also can be used as carrier or an acidic catalyst component of catalyzer.During as an acidic catalyst component, can be according to different catalyzed reaction demands, in the catalytic reaction processes such as the esterification of the disproportionation of the disproportionation of aromatic hydrocarbons, isomerization, alkylation, transalkylation, alkane, isomerization, alcohols, etherificate, amination, play a role.
Compare with the synthetic technology of existing mordenite, the synthetic method of mordenite provided by the invention has the following advantages:
(1) synthetic method provided by the invention can synthesize mordenite in the situation of not using the costliness such as organic formwork agent, inorganic ammonia, fluorochemical or the additive such as poisonous, and synthetic product not only degree of crystallinity is high, and does not contain other Crystal impurity.
(2) in the inventive method, need first mordenite to be carried out suitable alkaline solution and process to prepare the high reactivity structure directing agent.After mordenite was processed through suitable basic solution, its crystalline structure major part can be caved in, and forms to have in a large number highly active secondary structure and other feature cage units.These secondary structure units can directly as the nucleus of mordenite growth, perhaps have very strong inducing action guide effect is played in the growth of mordenite with other feature cage units.On the one hand, highly active directed agents can promote the synthetic of high-crystallinity, avoids the generation of other impurity crystal; On the other hand, compare with the technology that direct use mordenite is made crystal seed, the present invention can reduce the consumption of mordenite, thereby reduce synthetic cost owing to the use of structure directing agent.
(3) operation is simple for synthetic method of the present invention, and raw material is cheap and easy to get, and is nontoxic, avoided using expensive, the poisonous raw materials such as organic template agent, not only greatly reduces production cost, and whole preparation process environmental protection.
Description of drawings
Fig. 1 is the XRD spectra of the mordenite that obtains of embodiment 1.
Fig. 2 is the XRD spectrogram of the sample that obtains of comparative example 2.
Embodiment
Below by specific embodiment MOR synthetic method of the present invention is given detailed description, but be not limited to embodiment.
The raw material MOR(SiO that uses in the embodiment of the invention
2/ A1
2O
3Mol ratio is 12) available from the Fushun Petrochemical Company catalyst plant.White carbon black, water glass (SiO
28 mol/L), silicon sol (SiO
2Content is 30wt%), available from Haiyang Chemical Plant, Qingdao, tetraethyl ammonium hydroxide (25 wt %).Employed acid, alkali and other reagent are the analytical pure chemical reagent.
Embodiment 1
The sodium hydroxide solution 1000mL that gets 40g MOR, 1mol/L places beaker, stirs 30min under room temperature condition, changes in the closed reactor, processes 4h for 120 ℃ in baking oven.The gained suspension liquid is structure directing agent, and is stand-by.
Get 13.9 g sodium hydroxide, 10.4 g sodium aluminates place 500 mL distilled water, vigorous stirring is until all dissolvings.Slowly add again 72 g white carbon blacks, vigorous stirring 30 min.Then add the upper made structure directing agent of step of 40mL, vigorous stirring 30 min.Then pack in the closed reactor 170 ℃ of crystallization 24h in baking oven into.With resulting product with distilled water wash 4 times to neutral, 120 ℃ of dry 12h, gained sample number into spectrum are CL1, the gained sample is pure mordenite as shown in Figure 1, does not contain other impurity.
The sodium hydroxide solution 1000mL that gets 30g MOR, 0.8mol/L places beaker, stirs 30min under room temperature condition, changes in the closed reactor, processes 4h for 120 ℃ in baking oven.The gained suspension liquid is structure directing agent, and is stand-by.
Get 18.5 g sodium hydroxide, 14 g sodium aluminates place 500 mL distilled water, vigorous stirring is until all dissolvings.Slowly add again 93 g white carbon blacks, vigorous stirring 25min.Then add the upper made structure directing agent of step of 50mL, vigorous stirring 25 min.Then pack in the closed reactor 175 ℃ of crystallization 30h in baking oven into.With resulting product with distilled water wash 4 times to neutral, 120 ℃ of dry 12h, gained sample number into spectrum are CL2, are pure mordenite.
Embodiment 3
The sodium hydroxide solution 1500mL that gets 40g MOR, 1.2mol/L places beaker, stirs 30min under room temperature condition, changes in the closed reactor, processes 3h for 120 ℃ in baking oven.The gained suspension liquid is structure directing agent, and is stand-by.
Get 10.4 g sodium hydroxide, 9.5 g sodium aluminates place 400 mL distilled water, vigorous stirring is until all dissolvings.Slowly add again 145mL water glass, vigorous stirring 20 min.Then add the upper made structure directing agent of step of 35mL, vigorous stirring 40 min.Then pack in the closed reactor 190 ℃ of crystallization 20h in baking oven into.With resulting product with distilled water wash 4 times to neutral, 120 ℃ of dry 12h, gained sample number into spectrum are CL3, are pure mordenite.
Embodiment 4
The potassium hydroxide solution 1000mL that gets 40g MOR, 1mol/L places beaker, stirs 30min under room temperature condition, changes in the closed reactor, processes 4h for 120 ℃ in baking oven.The gained suspension liquid is structure directing agent, and is stand-by.
Get 14 g sodium hydroxide, 22g Tai-Ace S 150 places 500 mL distilled water, vigorous stirring is until all dissolvings.Slowly add again 70 g white carbon blacks, vigorous stirring 30 min.Then add the upper made structure directing agent of step of 25mL, vigorous stirring 30 min.Then pack in the closed reactor 160 ℃ of crystallization 28h in baking oven into.With resulting product with distilled water wash 4 times to neutral, 120 ℃ of dry 12h, gained sample number into spectrum are CL4, are pure mordenite.
Comparative example 1
Get 13.9 g sodium hydroxide, 10.4 g sodium aluminates, 280mL tetraethyl ammonium hydroxide and place 220 mL distilled water, vigorous stirring is until all dissolvings.Slowly add again 72 g white carbon blacks, vigorous stirring 30 min.Then pack in the closed reactor 170 ℃ of crystallization 24h in baking oven into.With resulting product with distilled water wash 4 times to neutral, 120 ℃ of dry 12h, gained sample number into spectrum are CL5, are mordenite.
Comparative example 2
Get 13.9 g sodium hydroxide, 10.4 g sodium aluminates place 500 mL distilled water, vigorous stirring is until all dissolvings.Slowly add again 72 g white carbon blacks, vigorous stirring 30 min.Then add 1.6g MOR, vigorous stirring 30 min.Then pack in the closed reactor 170 ℃ of crystallization 24h in baking oven into.With resulting product with distilled water wash 4 times to neutral, 120 ℃ of dry 12h, gained sample number into spectrum are CL6, the gained sample is mordenite, as shown in Figure 2.
The crystalline phase character of table 1 embodiment and comparative example gained MOR
| The sample title | Crystalline phase | Relative crystallinity, % |
| CL1 | MOR | 100 |
| CL2 | MOR | 99 |
| CL3 | MOR | 97 |
| CL4 | MOR | 98 |
| CL5 | MOR | 93 |
| CL6 | MOR | 72 |
Annotate: the relative crystallinity that table 1 is given is that degree of crystallinity take CL1 is as reference.
By table 1 and Fig. 1 ~ 2 as seen, the mordenite of the inventive method gained has higher degree of crystallinity, and the inventive method do not adopt template, and environmental protection reduces preparation cost.
Claims (11)
1. the synthetic method of a mordenite may further comprise the steps:
(1) preparation of structure directing agent
Mordenite is joined in the alkaline solution, and wherein the liquid-solid ratio of alkaline solution and mordenite is 10～50 mL/g, after mixing, processes 0.5～8.0h at 80～180 ℃ under the air tight condition, and gained suspension liquid product is structure directing agent;
(2) mordenite is synthetic
According to 3 ~ 10Na
2O:20 ~ 80SiO
2: A1
2O
3: 400 ~ 1800H
2O mole proportioning with mineral alkali, aluminium source, silicon source and water, stirs the synthesizing Si-Al gel, then adds the structure directing agent of step (1) preparation, wherein the add-on of structure directing agent in mordenite and the silicon source that is added with SiO
2The mass ratio of meter is 0.005～0.060, and then under 140～220 ℃ of temperature, crystallization 10～50h obtains mordenite through separation, washing and drying.
2. in accordance with the method for claim 1, it is characterized in that the liquid-solid ratio of alkaline solution and mordenite is 20～30 mL/g in the step (1).
3. in accordance with the method for claim 1, it is characterized in that the treatment condition in the step (1) are as follows: process 2.0～4.0h at 100～140 ℃.
4. in accordance with the method for claim 1, it is characterized in that in the step (2), the add-on of structure directing agent in mordenite and the silicon source that is added with SiO
2The mass ratio of meter is 0.010～0.040.
5. in accordance with the method for claim 1, it is characterized in that the mordenite described in the step (1) is sodium type mordenite, its SiO
2/ A1
2O
3Mol ratio is 10～100.
6. in accordance with the method for claim 1, it is characterized in that the described alkaline solution of step (1) is one or more the mixing solutions in NaOH, KOH and the LiOH aqueous solution; The concentration of alkaline solution is 0.1～5.0 mol/L.
7. in accordance with the method for claim 1, it is characterized in that the described churning time that mixes of step (1) is 10～60min.
8. in accordance with the method for claim 1, it is characterized in that the mineral alkali described in the step (2) is one or more among NaOH, KOH, the LiOH; The aluminium source is one or more in sodium aluminate, aluminium hydroxide, Tai-Ace S 150, aluminum chloride, aluminum nitrate, the aluminum oxide; The silicon source is one or more in White Carbon black, silica gel, silicon sol, the water glass.
9. in accordance with the method for claim 1, it is characterized in that in the step (2), at first is that mineral alkali, aluminium source is soluble in water, adds silicon source, vigorous stirring 10～60min behind dissolve complete; Then add the structure directing agent according to step (1) preparation, vigorous stirring 10～60min.
10. in accordance with the method for claim 1, it is characterized in that the crystallization condition of step (2) is as follows: temperature of reaction is 150～190 ℃, and the reaction times is 17～30h.
11. in accordance with the method for claim 1, it is characterized in that the described drying conditions of step (2) is dry 5 ~ 15h under 100 ~ 140 ℃ of conditions.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110324663.5A CN103058221B (en) | 2011-10-24 | 2011-10-24 | Method for synthesizing mordenite |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110324663.5A CN103058221B (en) | 2011-10-24 | 2011-10-24 | Method for synthesizing mordenite |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103058221A true CN103058221A (en) | 2013-04-24 |
| CN103058221B CN103058221B (en) | 2014-12-31 |
Family
ID=48101160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110324663.5A Active CN103058221B (en) | 2011-10-24 | 2011-10-24 | Method for synthesizing mordenite |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103058221B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787364A (en) * | 2014-01-23 | 2014-05-14 | 大连理工大学 | Method for preparing mordenite by using diatomite |
| CN106698453A (en) * | 2015-11-12 | 2017-05-24 | 中国石油化工股份有限公司 | Synthesis method for nanometer MOR molecular sieve |
| CN108217680A (en) * | 2016-12-09 | 2018-06-29 | 中国科学院大连化学物理研究所 | The method of synthesizing flokite MOR molecular sieves, and products thereof and application |
| CN108609631A (en) * | 2018-06-15 | 2018-10-02 | 山西大同大学 | A method of synthesis SAPO-20 molecular sieves |
| CN111573690A (en) * | 2020-05-13 | 2020-08-25 | 西安交通大学 | Template-free preparation method of mordenite for gaseous radioactive iodine adsorption |
| CN112551546A (en) * | 2020-11-16 | 2021-03-26 | 复榆(张家港)新材料科技有限公司 | Preparation method and application of binder-free macroporous high-silicon Na-type MOR zeolite molecular sieve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005219988A (en) * | 2004-02-09 | 2005-08-18 | Tosoh Corp | Synthetic method of high-silica mordenite |
| CN1837046A (en) * | 2006-04-24 | 2006-09-27 | 南开大学 | Process for synthesis of nano mordenite molecular sieve |
| CN101935053A (en) * | 2009-06-30 | 2011-01-05 | 中国石油化工股份有限公司石油化工科学研究院 | ZSM-5 zeolite and synthesis method thereof |
| CN102060308A (en) * | 2009-11-18 | 2011-05-18 | 中国科学院大连化学物理研究所 | Synthesis method of nano fibrous mordenite |
-
2011
- 2011-10-24 CN CN201110324663.5A patent/CN103058221B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005219988A (en) * | 2004-02-09 | 2005-08-18 | Tosoh Corp | Synthetic method of high-silica mordenite |
| CN1837046A (en) * | 2006-04-24 | 2006-09-27 | 南开大学 | Process for synthesis of nano mordenite molecular sieve |
| CN101935053A (en) * | 2009-06-30 | 2011-01-05 | 中国石油化工股份有限公司石油化工科学研究院 | ZSM-5 zeolite and synthesis method thereof |
| CN102060308A (en) * | 2009-11-18 | 2011-05-18 | 中国科学院大连化学物理研究所 | Synthesis method of nano fibrous mordenite |
Non-Patent Citations (2)
| Title |
|---|
| BAOWANG LU,ET AL.: "Direct synthesis of high-silica mordenite using seed crystals", 《MICROPOROUS AND MESOPOROUS MATERIALS》 * |
| 孟祥举等: "无有机模板剂条件下合成沸石催化材料", 《催化学报》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103787364A (en) * | 2014-01-23 | 2014-05-14 | 大连理工大学 | Method for preparing mordenite by using diatomite |
| CN106698453A (en) * | 2015-11-12 | 2017-05-24 | 中国石油化工股份有限公司 | Synthesis method for nanometer MOR molecular sieve |
| CN106698453B (en) * | 2015-11-12 | 2018-07-20 | 中国石油化工股份有限公司 | A method of synthesis nanometer MOR molecular sieves |
| CN108217680A (en) * | 2016-12-09 | 2018-06-29 | 中国科学院大连化学物理研究所 | The method of synthesizing flokite MOR molecular sieves, and products thereof and application |
| CN108217680B (en) * | 2016-12-09 | 2021-05-25 | 延长中科（大连）能源科技股份有限公司 | Method for synthesizing mordenite MOR molecular sieve, product and application thereof |
| CN108609631A (en) * | 2018-06-15 | 2018-10-02 | 山西大同大学 | A method of synthesis SAPO-20 molecular sieves |
| CN108609631B (en) * | 2018-06-15 | 2022-03-25 | 山西大同大学 | Method for synthesizing SAPO-20 molecular sieve |
| CN111573690A (en) * | 2020-05-13 | 2020-08-25 | 西安交通大学 | Template-free preparation method of mordenite for gaseous radioactive iodine adsorption |
| CN112551546A (en) * | 2020-11-16 | 2021-03-26 | 复榆(张家港)新材料科技有限公司 | Preparation method and application of binder-free macroporous high-silicon Na-type MOR zeolite molecular sieve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103058221B (en) | 2014-12-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103058221B (en) | Method for synthesizing mordenite | |
| CN102442679B (en) | Synthetic method of chabasite | |
| CN102874831B (en) | Method for synthesizing Y/beta composite molecular sieve | |
| CN107640775B (en) | Method for preparing ZSM-5 molecular sieve by using solid waste | |
| AU2020101871A4 (en) | A Method for Preparing ZSM-5 Zeolite by Using Solid wastes | |
| CN103058222B (en) | Method for synthesizing ZSM-35 molecular sieve | |
| CN111943224B (en) | Preparation method of Cu-SSZ-13 molecular sieve catalyst, obtained product and application | |
| CN112299436B (en) | Cu-SSZ-39@ SSZ-39 core-shell molecular sieve and preparation method and application thereof | |
| CN105731492A (en) | Low-cost green method for synthesizing Fe-ZSM-5 molecular sieve | |
| CN112279266A (en) | Cu-SSZ-13@ SSZ-13 core-shell type molecular sieve and preparation method and application thereof | |
| CN111252781B (en) | Method for synthesizing high-silicon KFI zeolite molecular sieve by organic template-free seed crystal method | |
| CN114210363B (en) | Preparation method of SSZ-16 copper-containing catalyst | |
| CN101928010B (en) | Preparation method of NaY type molecular sieve | |
| CN103043681B (en) | Preparation method of nano layered ZSM (Zeolite Molecular Sieve)-5 zeolite molecular sieve | |
| CN103058211B (en) | Method for synthesizing BETA molecular sieve | |
| WO2015021611A1 (en) | Zsm-22 molecular sieve and synthesis method for me-zsm-22 | |
| CN102838128B (en) | Mordenite/ZSM-5 intergrowth molecular sieve and synthesis method thereof | |
| CN103182321B (en) | Treatment method of deactivated titanium-silicon molecular sieve | |
| CN102874839B (en) | Synthetic method of ZSM-5/mordenite composite molecular sieve | |
| CN103803575B (en) | A kind of synthetic method of EU-1/MOR coexisting molecular sieve | |
| CN115057453B (en) | Method for preparing SSZ-13 molecular sieve by using FCC spent catalyst and application thereof | |
| CN103058212B (en) | Synthesis method of BETA-MOR composite molecular sieve | |
| CN103058220B (en) | Preparation method of BETA-MOR symbiotic molecular sieve | |
| CN109999894A (en) | A kind of ardealite extracts aluminum for the method for composite catalyst | |
| CN105621439B (en) | A kind of synthetic method of Beta zeolites |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |