CN106608638B - A method of preparing multi-stage porous Y type molecular sieve - Google Patents
A method of preparing multi-stage porous Y type molecular sieve Download PDFInfo
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Abstract
A method of preparing multi-stage porous Y type molecular sieve, it is characterised in that this method comprises: silicon source, silicon source and water, which 1) are mixed ageing, obtains crystallization director；2) first crystallization director and silicon source are mixed, then silicon source is added and water obtains reactive silicon Aluminum sol, reactive silicon Aluminum sol is obtained into crystallization liquid I in crystallization, the additive amount of the crystallization director is the 0.5~5% of the reactive silicon Aluminum sol gross mass meter；3) bis- (N- crassitude) the pentane bromides of 1,5- and crystallization liquid I are mixed to get crystallization liquid II, crystallization liquid II is in 80~105 DEG C of 10~25h of crystallization and recovery product.
Description
Technical field
The present invention relates to a kind of methods for preparing Y type molecular sieve, and further, the present invention relates to a kind of two crystallization legal systems
The method of standby multi-stage porous Y type molecular sieve.
Background technique
Y type molecular sieve (HY, REY, USY) is since the sixties in last century of use for the first time, just always catalytic cracking (FCC)
The chief active constituent element of catalyst.However, the polycyclic compound content in FCC feedstock is significant with the aggravation of crude oil heaviness
Increase, the diffusivity in zeolite cavity is but remarkably decreased.And as the Y type molecular sieve of predominant cracking constituent element as a kind of
Poromerics, aperture only have 0.74nm, and duct diffusion limitation is more serious, it is made to be highly susceptible to carbon deposit in catalysis reaction
Influence and inactivate, and many secondary responses (Cohen ER.Quantities, units and symbols easily occurs
In physical chemistry:Royal Society of Chemistry；2007).
In order to overcome the defect of general microporous molecular sieve, reducing zeolite crystal size and be introduced into molecular sieve crystal
Multi-stage porous can be effectively improved its diffusion.Compared to traditional micro porous molecular sieve, the multistage transgranular external diffusion of porous molecular sieve
It has excellent performance, shows unique catalytic activity in the catalysis reaction of macromolecular, and catalyst inactivation can be delayed, reduce coke
Yield (Perez-Ramirez J, et al.Chemical Society Reviews 2008；37:2530-42).
Hydro-thermal method is industrially to prepare the method that ultrastable generallys use at present, can be in Y type molecular sieve directly
Introducing is certain mesoporous, and still, hydro-thermal method, since silicon cannot migrate in time, fills into scarce aluminium vacancy, cause lattice in dealumination process
It collapses, non-skeleton clogged with fragments duct.The blocking in duct affects mesoporous connectivity, to affect connecing for reaction molecular
Nearly property.
A kind of novel mesopore molecular sieve is disclosed in CN1349929A, and y-type zeolite is introduced in molecular sieve hole wall
Primary and secondary structural unit makes it have the basic structure of traditional Y type molecular sieve, but its acid and hydrothermal stability improvement
Still very limited, the requirement of FCC is not achieved.
In addition there are mesoporous Y type molecular sieve is obtained with template direct synthesis technique, one is disclosed in CN103214003A
Mesoporous Y type molecular sieve of kind and preparation method thereof, it is characterised in that be prepared for y-type zeolite directed agents first, then have using amphiphilic
Machine silane N, N- dimethyl-N-[3- (trimethoxy silicon) propyl] chlorination octadecyl ammonium (TPOAC) are led as multi-stage porous template
To having synthesized mesoporous Y type molecular sieve, average pore size 3.8nm.
Summary of the invention
The object of the present invention is to provide a kind of two crystallization methods different from the prior art to prepare multi-stage porous Y type molecular sieve
Method.
A method of preparing multi-stage porous Y type molecular sieve, it is characterised in that this method comprises:
1. according to Al2O3: (1~30) SiO2: (12~30) Na2O:(200~450) H2The molar ratio of O by silicon source, silicon source and
Water mixing, then room temperature~80 DEG C at a temperature of ageing 0.2~40 hour after obtain crystallization director；
2. first mixing crystallization director and silicon source, silicon source and water is then added, obtaining molar ratio is Al2O3: (2~20)
SiO2: (1~5) Na2O:(150~400) H2The reactive silicon Aluminum sol of O, reactive silicon Aluminum sol is brilliant at 80~105 DEG C
Change 5~12h, obtain crystallization liquid I, the additive amount of the crystallization director is the reactive silicon Aluminum sol gross mass meter
0.5~5%；
3. by 1, bis- (N- crassitude) the pentane bromides of 5- are added in crystallization liquid I, in 80~105 DEG C of continuation crystallization 10~
Recovery product after 25h.
Bis- (N- crassitude) the pentane bromide additional amounts of template 1,5- are silicon source weight in crystallization liquid I
0.05-0.5, preferably 0.1-0.3；
The crystallization director preferably has Al2O3: (12~20) SiO2: (12~20) Na2O:(260~350) H2O's rubs
That ratio；
The reactive silicon Aluminum sol preferably has Al2O3: (5~10) SiO2: (1~3) Na2O:(180~300) H2O's
Molar ratio；
The silicon source can be one or more of waterglass, silica solution, silica gel, Alusil and white carbon black, wherein
Preferably waterglass, modulus are more preferable waterglass between 1.5~4, and modulus is between 2~3.
The silicon source is can be aluminum sulfate and sodium metaaluminate, wherein preferably aluminum sulfate, in more preferable control system
Na content.
The present invention with bis- (N- crassitude) the pentane bromides of 1,5- be multi-stage porous template, 1,5- bis- (N- crassitudes)
Pentane bromide shows as stronger positive charge, is easily adsorbed to the Y type molecular sieve crystallization liquid with certain ordered structure
Species surface, while its long-chain has the function of that structure directing forms multi-stage porous, forms multi-stage porous Y type molecular sieve structure.It is described
The Nitrogen adsorption isotherm of multi-stage porous Y type molecular sieve of method preparation show typical IV type feature, in 0.6-0.8P/P0
Adsorptive pressure with concentration shows pore size distribution curve, then its there are a kind of pore-size distributions at least at 7~9nm；In addition
Pore size distribution curve is serrated, and sample has the concatenated hierarchical porous structure of micropore-mesopore-macropore.
The template that the method for the present invention uses is cheap, and production cost is low, is conducive to industrialized production and application.This hair
Bright method is put forward for the first time by carrying out multi-stage porous Y type molecular sieve using bis- (N- crassitude) the pentane bromide templates of 1,5-
Synthesis, and crystallinity and the higher multi-stage porous Y type molecular sieve of purity can be synthesized.The modification Y type that the method for the present invention is prepared
Molecular sieve can be used for catalyst and catalyst carrier.The Y type molecular sieve has multi-stage porous topological structure, for the different of petroleum distillate
Structure pour point depression is hydrocracked, the process such as catalytic cracking.
Detailed description of the invention
Fig. 1 is the XRD spectra of the multi-stage porous Y type molecular sieve of the method for the present invention preparation.
Fig. 2 is low temperature nitrogen physical absorption-desorption curve of the multi-stage porous Y type molecular sieve of the method for the present invention preparation.
Fig. 3 is that the pore-size distribution of the multi-stage porous Y type molecular sieve for the method for the present invention preparation being calculated according to BJH model is bent
Line.
Specific embodiment
Below by embodiment, the invention will be further described, but content not thereby limiting the invention.
In embodiments, Sample crystals structure is determined with X-ray diffraction (XRD), the spectrogram that 2 angles θ of record are 5 to 35 °.
In embodiments, sample specific surface and pore structure parameter are obtained by low temperature nitrogen adsorption desorption measurement.
Embodiment 1
According to 1Al2O3: 15SiO2: 16Na2O:320H28.2g NaOH is added to 55ml deionized water by the molar ratio of O
In, solution is stirred to clarify, 3.0g sodium metaaluminate is added in above-mentioned solution, 35.8g waterglass (modulus is then added
2.5), room temperature continues stirring to whole dissolutions, obtains directed agents after being then aged 8 hours at 40 DEG C.
It again by above-mentioned 10g directed agents, is added in 40g waterglass (modulus 2.5), stirs 0.5 hour, it is then that 6.3g is inclined
Sodium aluminate and 18g aluminum sulfate are added in reaction system, and 28ml water is added, and continue stirring 1.5 hours after adding, finally will mixing
Object is put into the stainless steel crystallizing kettle of teflon lined, it is closed after crystallization 8 hours in 95 DEG C of baking ovens, obtain crystallization liquid I.
Bis- (N- crassitude) the pentane bromide 8g of 1,5- are added in crystallization liquid I, after continuing crystallization 22h at 100 DEG C,
Filtering, washing, filter cake roast 4h at 600 DEG C and obtain multi-stage porous Y type molecular sieve in 120 DEG C of dry 8h.
Resulting multi-stage porous Y type molecular sieve XRD spectra is shown in Fig. 1.
Fig. 2 is low temperature nitrogen physical absorption-desorption curve, the multi-stage porous Y type molecular sieve of its preparation of the preparation method
Nitrogen adsorption isotherm show typical IV type feature, in 0.6-0.8P/P0With concentration adsorptive pressure.
Fig. 3 is the pore size distribution curve being calculated according to desorption BJH model, illustrates multi-stage porous Y type molecule of the invention
Sieve is there are relatively narrow multi-stage porous pore-size distribution, and there are a kind of pore-size distributions at least at 7~9nm；In addition pore size distribution curve
It is serrated, sample has the concatenated hierarchical porous structure of micropore-mesopore-macropore.
Embodiment 2
According to 1Al2O3: 15SiO2: 16Na2O:320H28.2g NaOH is added to 55ml deionized water by the molar ratio of O
In, solution is stirred to clarify, 3.0g sodium metaaluminate is added in above-mentioned solution, 35.8g waterglass (modulus is then added
2.5), room temperature continues stirring to whole dissolutions, obtains directed agents after being then aged 20 hours at 30 DEG C.
It again by above-mentioned 10g directed agents, is added in 40g waterglass (modulus 2.5), stirs 0.5 hour, it is then that 6.3g is inclined
Sodium aluminate and 18g aluminum sulfate are added in reaction system, and 28ml water is added, and continue stirring 1.5 hours after adding, finally will mixing
Object is put into the stainless steel crystallizing kettle of teflon lined, it is closed after crystallization 10 hours in 100 DEG C of baking ovens, obtain crystallization liquid
I。
Bis- (N- crassitude) the pentane bromide 10g of 1,5- are added in crystallization liquid I, continue crystallization 18h at 100 DEG C
Afterwards, it filters, washing, filter cake roasts 3h at 700 DEG C and obtain multi-stage porous Y type molecular sieve in 100 DEG C of dry 10h.
Chromatogram characteristic with Fig. 1, Fig. 2 and Fig. 3.
Embodiment 3
According to 1Al2O3: 15SiO2: 16.5Na2O:320H29.4g waterglass (modulus 3.3) is added to by the molar ratio of O
In 6.9g sodium aluminate solution, stirring and dissolving obtains directed agents after being then aged 5 hours at 45 DEG C.
It again by above-mentioned 10g directed agents, is added in 40g waterglass (modulus 3.3), stirs 0.5 hour, then by 25g sulphur
Sour aluminium is added in reaction system, and 28ml water is added, and continues stirring 1.5 hours after adding, mixture is finally put into polytetrafluoro
In the stainless steel crystallizing kettle of vinyl liner, it is closed after crystallization 12 hours in 95 DEG C of baking ovens, obtain crystallization liquid I.
Bis- (N- crassitude) the pentane bromide 8g of 1,5- are added in crystallization liquid I, after continuing crystallization 15h at 100 DEG C,
Filtering, washing, filter cake roast 6h at 550 DEG C and obtain multi-stage porous Y type molecular sieve in 80 DEG C of dry 11h.
Chromatogram characteristic with Fig. 1, Fig. 2 and Fig. 3.
Embodiment 4
According to 1Al2O3: 15SiO2: 16.5Na2O:320H29.4g waterglass (modulus 3.3) is added to by the molar ratio of O
In 6.9g sodium aluminate solution, stirring and dissolving obtains crystallization director after being then aged 20 hours at 30 DEG C.
It again by above-mentioned 10g directed agents, is added in 40g waterglass (modulus 3.3), stirs 0.5 hour, it is then that 6.3g is inclined
Sodium aluminate and 18g aluminum sulfate are added in reaction system, and 28ml water is added, and continue stirring 1.5 hours after adding, finally will mixing
Object is put into the stainless steel crystallizing kettle of teflon lined, it is closed after crystallization 5 hours in 95 DEG C of baking ovens, obtain crystallization liquid I.
Bis- (N- crassitude) the pentane bromide 8g of 1,5- are added in crystallization liquid I, after continuing crystallization 25h at 100 DEG C,
Filtering, washing, filter cake roast 4h at 600 DEG C and obtain multi-stage porous Y type molecular sieve in 120 DEG C of dry 8h.
Chromatogram characteristic with Fig. 1, Fig. 2 and Fig. 3.
Claims (5)
1. a kind of prepare there are a kind of method of the multi-stage porous Y type molecular sieve of pore-size distribution at least at 7~9nm, feature exists
In this method comprises:
1) according to Al2O3: (1~30) SiO2: (12~30) Na2O:(200~450) H2The molar ratio of O mixes silicon source, silicon source and water
Close, then room temperature~80 DEG C at a temperature of ageing 0.2~40 hour after obtain crystallization director；
2) first crystallization director and silicon source are mixed, silicon source and water is then added, obtaining molar ratio is Al2O3: (2~20) SiO2:
(1~5) Na2O:(150~400) H2The reactive silicon Aluminum sol of O, by reactive silicon Aluminum sol at 80~105 DEG C crystallization 5~
12h, obtains crystallization liquid I, the additive amount of the crystallization director be the reactive silicon Aluminum sol gross mass meter 0.5~
5%；
3) bis- (N- crassitude) the pentane bromides of 1,5- and crystallization liquid I are mixed to get crystallization liquid II, crystallization liquid II in 80~
105 DEG C of 10~25h of crystallization and recovery product, bis- (N- crassitude) the pentane bromide additional amounts of 1, the 5- are crystallization liquid I
The 0.05~0.5 of middle silicon source weight.
2. according to the method for claim 1 wherein the crystallization director has Al2O3: (12~20) SiO2: (12~20)
Na2O:(260~350) H2The molar ratio of O.
3. according to the method for claim 1 wherein the reactive silicon colloidal sol has Al2O3: (5~10) SiO2: (1~3)
Na2O:(180~300) H2The molar ratio of O.
4. according to the method for claim 1 wherein the silicon source is waterglass.
5. according to the method for claim 1 wherein the silicon source is aluminum sulfate.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0946416B1 (en) * | 1996-10-21 | 2002-02-20 | Institut Français du Pétrole | Im-5 zeolite, method of preparation and catalytic applications thereof |
| CN1840474A (en) * | 2005-03-31 | 2006-10-04 | 中国石油化工股份有限公司 | Process for synthesis of NaY molecular sieve |
| CN102452666A (en) * | 2010-10-21 | 2012-05-16 | 中国石油化工股份有限公司 | Method for synthesizing IM-5 molecular sieve |
| CN102616807A (en) * | 2012-03-29 | 2012-08-01 | 北京化工大学 | Method for synthesizing Y type molecular sieve |
| CN103723740A (en) * | 2012-10-12 | 2014-04-16 | 中国石油化工股份有限公司 | Synthesis method of IM-5 molecular sieve |
| CN104229822A (en) * | 2013-06-13 | 2014-12-24 | 天津神能科技有限公司 | Preparation method for small-crystal-grain Y molecular sieve with high specific surface area and high silicon-aluminium ratio |
-
2015
- 2015-10-26 CN CN201510698973.1A patent/CN106608638B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0946416B1 (en) * | 1996-10-21 | 2002-02-20 | Institut Français du Pétrole | Im-5 zeolite, method of preparation and catalytic applications thereof |
| CN1840474A (en) * | 2005-03-31 | 2006-10-04 | 中国石油化工股份有限公司 | Process for synthesis of NaY molecular sieve |
| CN102452666A (en) * | 2010-10-21 | 2012-05-16 | 中国石油化工股份有限公司 | Method for synthesizing IM-5 molecular sieve |
| CN102616807A (en) * | 2012-03-29 | 2012-08-01 | 北京化工大学 | Method for synthesizing Y type molecular sieve |
| CN103723740A (en) * | 2012-10-12 | 2014-04-16 | 中国石油化工股份有限公司 | Synthesis method of IM-5 molecular sieve |
| CN104229822A (en) * | 2013-06-13 | 2014-12-24 | 天津神能科技有限公司 | Preparation method for small-crystal-grain Y molecular sieve with high specific surface area and high silicon-aluminium ratio |
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