CN107417827A - The method and polyethylene of a kind of vinyl polymerization - Google Patents
The method and polyethylene of a kind of vinyl polymerization Download PDFInfo
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- CN107417827A CN107417827A CN201610348008.6A CN201610348008A CN107417827A CN 107417827 A CN107417827 A CN 107417827A CN 201610348008 A CN201610348008 A CN 201610348008A CN 107417827 A CN107417827 A CN 107417827A
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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Abstract
The present invention relates to polymerisation field, the polyethylene for disclosing a kind of method of vinyl polymerization and being prepared by this method.This method includes：Under the polymerization conditions, in the presence of a catalyst, ethene is made to carry out polymerisation, wherein, the catalyst contains spherical illite mesoporous composite material and the magnesium salts and/or titanium salt that are supported on the spherical illite mesoporous composite material.A kind of stable loaded catalyst of meso-hole structure is the method use, heap density and the relatively low and non-breakable polyethylene product of melt index can be obtained.
Description
Technical field
The present invention relates to polymerisation field, in particular it relates to a kind of method of vinyl polymerization and be prepared into by this method
The polyethylene arrived.
Background technology
Polyethylene is a kind of polymer generated using ethene as monomer by polymerisation.Due to polyethylene have it is excellent
Resistance to low temperature, the advantages that chemical stability is good, it is widely used in chemical field.During polyethylene is prepared, gather
The use of catalyst for ethylene is to influence one of key factor of yield and quality of polyethylene product.
The development and application of polyethylene catalysts are the olefin polymerization catalysis after traditional Ziegler-Natta catalyst
The another important breakthrough in field, this causes the research of polyethylene catalysts to enter the stage of a fast development.Due to equal
Phase polyethylene catalyst reach needed for high activity catalyst amount is big, production cost is high, and obtained polymer is without particle shape,
It can not be used on widely used slurry process or gas phase polymerization technique.The effective way for overcoming above mentioned problem is exactly solvable
Property polyethylene catalysts carry out supported processing.At present, the supported research report of relevant polyethylene catalysts is very more.It is deep
Study new support/catalyst/co-catalyst system, it is necessary to different carriers is studied, to promote carried catalyst and polyene
The further development of hydrocarbon industry.
Illite is that a kind of common clay Kuang Wu ﹐ often Er Cheng ﹐ and are originated in argillaceous rocks by the weathering of Bai Yun Mu ﹑ potassium feldspars,
Or formed by other mineral alterations.Natural illites are due to larger specific surface area and microcellular structure, therefore with very strong
Adsorption capacity.
Since the regular mesoporous material of Mobile companies synthesis duct high-sequential in 1992, because it has high ratio table
Face, regular pore passage structure and narrow pore-size distribution so that mesoporous material is applied in catalysis, separation, medicine and other fields
Very big concern is arrived.Zhao east member in 1998 et al. synthesizes a kind of new material-mesoporous material SBA-15, and the material has height
Spend orderly aperture (6-30nm), big pore volume (1.0cm3/ g), thicker hole wall (4-6nm), keep high mechanical properties
And good catalytic adsorption performance is (see D.Y.Zhao, J.L.Feng, Q.S.Huo, et al Science 279 (1998)
548-550).CN1341553A discloses a kind of preparation method of mesonic pore molecular sieve carrier material, mesoporous material made from this method
Material is used as heterogeneous reaction catalyst carrier, easily realizes the separation of catalyst and product.
But conventional ordered mesoporous material SBA-15 microscopic appearances are bar-shaped, itself mobility is poor, its big ratio
Surface area and high pore volume cause to make it have stronger water suction, moisture absorption ability, and this has been further exacerbated by the group of ordered mesoporous material
It is poly-, limit the storage of ordered mesoporous material, transport, post-processing and application.
The mesoporous material for the load polyethylene catalysts reported at present on document is MCM-41, is loaded again after being handled with MAO
Catalytic activity is 10 after the MCM-41 of polyethylene catalysts carries out vinyl polymerization6gPE/(mol Zr h)(Chen S T,Guo C
Y,Lei L,et al.Polymer,2005,46:11093).Vinyl polymerization work is carried out after Mesoporous silica MCM 41 supported catalyst
The reason for property is relatively low be mainly MCM-41 hole wall structure heat endurance and hydrothermal stability it is poor, just have in loading process hole wall
Part caves in, and load effect is have impact on, so that have impact on catalytic activity.
Therefore, it is necessary to still orderly mesoporous material can be kept after seeking a kind of meso-hole structure stabilization, supported catalyst
Material, improve polyethylene product performance.
The content of the invention
The purpose of the present invention is the defects of overcoming prior art, there is provided the method and polyethylene of a kind of vinyl polymerization, the party
Method has used a kind of stable loaded catalyst of meso-hole structure, can obtain heap density and melt index is relatively low and non-breakable
Polyethylene product.
In order to realize foregoing invention purpose, the invention provides a kind of method of vinyl polymerization, this method includes：It is polymerizeing
Under reaction condition, in the presence of a catalyst, ethene is set to carry out polymerisation, wherein, the catalyst contains spherical illite and is situated between
Hole composite material and the magnesium salts and/or titanium salt being supported on the spherical illite mesoporous composite material, wherein, it is described it is spherical she
Sharp stone mesoporous composite material contains illite and the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure, described spherical
The average grain diameter of illite mesoporous composite material is 30-100 microns, and specific surface area is 40-120 meters squared per grams, and pore volume is
0.1-0.6 mls/g, aperture is in bimodal distribution, and bimodal most probable pore size corresponding respectively is that 1-10 nanometers and 15-60 receive
Rice.
Present invention also offers the polyethylene being prepared by the above method.
In the method for vinyl polymerization provided by the invention, used spherical illite mesoporous composite material meso-hole structure
Stabilization, orderly meso-hole structure is maintained to after load active component, the loaded catalyst that will be prepared by it
Good fluidity.Heap density can be obtained when the loaded catalyst is used for into ethylene polymerization and melt index is relatively low and be not easy
Broken polyethylene product.Specifically, the heap density of the polyethylene product of preparation is below 0.29g/mL, and melt index is
Below 0.3g/10min, flour rate are less than 3 weight %.
Meanwhile cheap illite is introduced into composite, it can largely reduce being produced into for catalyst
This.That is, spherical illite mesoporous composite material provided by the invention is dexterously by micro-sphere structure, the mesoporous material with double-pore structure
Material and illitic advantage are combined, so as to provide more preferable platform for the application of the spherical illite mesoporous composite material,
And its application field is expanded.
Other features and advantages of the present invention will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Accompanying drawing is for providing a further understanding of the present invention, and a part for constitution instruction, with following tool
Body embodiment is used to explain the present invention together, but is not construed as limiting the invention.In the accompanying drawings：
Fig. 1 is the XRD spectra of the spherical illite mesoporous composite material in embodiment 1, and abscissa is 2 θ, and ordinate is strong
Degree；
Fig. 2 is the scanning electron microscope (SEM) photograph (SEM) of the spherical illite mesoporous composite material in embodiment 1；
Fig. 3 is the graph of pore diameter distribution of the spherical illite mesoporous composite material in embodiment 1.
Embodiment
The embodiment of the present invention is described in detail below.It is it should be appreciated that described herein specific
Embodiment is merely to illustrate and explain the present invention, and is not intended to limit the invention.
The end points of disclosed scope and any value are not limited to the accurate scope or value herein, these scopes or
Value should be understood to comprising the value close to these scopes or value.For number range, between the endpoint value of each scope, respectively
It can be combined with each other between the endpoint value of individual scope and single point value, and individually between point value and obtain one or more
New number range, these number ranges should be considered as specific open herein.
The invention provides a kind of method of vinyl polymerization, this method includes：Under the polymerization conditions, deposited in catalyst
Under, ethene is set to carry out polymerisation, wherein, the catalyst contains spherical illite mesoporous composite material and is supported on described
Magnesium salts and/or titanium salt on spherical illite mesoporous composite material, wherein, the spherical illite mesoporous composite material contains her
Sharp stone and the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure, the spherical illite mesoporous composite material are put down
Equal particle diameter is 30-100 microns, and specific surface area is 40-120 meters squared per grams, and pore volume is 0.1-0.6 mls/g, and aperture is in double
Peak is distributed, and most probable pore size corresponding to bimodal difference is 1-10 nanometers and 15-60 nanometers.
According to a kind of preferred embodiment of the present invention, the average grain diameter of the spherical illite mesoporous composite material is
40-80 microns, specific surface area are 45-100 meters squared per grams, and pore volume is 0.15-0.5 mls/g, and aperture is in bimodal distribution, and
Most probable pore size corresponding to bimodal difference is 3-9 nanometers and 18-50 nanometers.
According to a kind of preferred embodiment of the present invention, the average grain diameter of the spherical illite mesoporous composite material
For 45-55 microns, specific surface area is 50-85 meters squared per grams, and pore volume is 0.15-0.3 mls/g, and aperture is in bimodal distribution,
And most probable pore size corresponding to bimodal difference is 5-7 nanometers and 20-45 nanometers.
In the present invention, the average grain diameter of the spherical illite mesoporous composite material is surveyed using laser fineness gage
, specific surface area, pore volume and most probable pore size measure according to nitrogen adsorption methods, and the surface topography of the spherical composite leads to
Overscanning Electronic Speculum instrument (SEM) measures.In the present invention, the average grain diameter is average particulate diameter.
According to the present invention, in the catalyst, spherical illite mesoporous composite material and the spherical Erie is supported on
There is no particular limitation for the content of magnesium salts and/or titanium salt on stone mesoporous composite material, can be according to the conventional load in this area
Type catalyst is determined.For example, on the basis of the gross weight of the catalyst, the spherical illite mesoporous composite material
Content can be 90-99 weight %, and the content sum in terms of magnesium elements and titanium elements can be 1- respectively for the magnesium salts and titanium salt
10 weight %.Preferably, the content of the spherical illite mesoporous composite material is 90.5-98.5 weight %, the magnesium salts and
The content sum in terms of magnesium elements and titanium elements can be 1.5-9.5 weight % to titanium salt respectively.It is highly preferred that the spherical Erie
The content of stone mesoporous composite material is 91-96 weight %, the magnesium salts and the titanium salt content in terms of magnesium elements and titanium elements respectively
Sum is 4-9 weight %.
In the present invention, there is no particular limitation for the species of the magnesium salts and titanium salt, can be the conventional selection of this area.
For example, the magnesium salts can be the one or more in magnesium chloride, magnesium sulfate, magnesium nitrate and magnesium bromide, preferably magnesium chloride；Institute
It can be titanium tetrachloride and/or titanium trichloride to state titanium salt.
In the present invention, the content of each element can use X-ray fluorescence spectra analytic approach to survey in the catalytic component
.
In the present invention, the catalyst can be prepared according to various methods commonly used in the art, as long as described
Magnesium salts and/or titanium salt are loaded on spherical illite mesoporous composite material.
In situations where it is preferred, the preparation method of the catalyst can include：In the presence of an inert gas, by it is spherical she
Sharp stone mesoporous composite material contacts with the mother liquor containing magnesium salts and/or titanium salt.
Preferably, the condition of the contact includes：Temperature is 25-100 DEG C, preferably 40-60 DEG C；Time is 0.1-5h,
Preferably 1-3h.
The mother liquor containing magnesium salts and/or titanium salt can be the organic solvent containing magnesium salts and/or titanium salt, described organic
Solvent can be isopropanol and tetrahydrofuran, and the volume ratio of tetrahydrofuran and isopropanol can be 1：1-3, preferably 1：1-
1.5。
In the preparation process of the catalyst, the dosage of the magnesium salts and/or the titanium salt is preferably relative to spherical
Illite mesoporous composite material is excessive.It is highly preferred that the magnesium salts, the titanium salt and the spherical illite mesoporous composite material
Dosage cause in the loaded catalyst that is prepared, on the basis of the gross weight of the catalyst, the magnesium salts and titanium salt
The content sum in terms of magnesium elements and titanium elements can be 1-10 weight % respectively, the spherical illite mesoporous composite material
Content can be 90-99 weight %.Preferably, the content sum of the magnesium salts and titanium salt respectively in terms of magnesium elements and titanium elements is
1.5-9.5 weight %, the content of the spherical illite mesoporous composite material is 90.5-98.5 weight %.It is it is highly preferred that described
Magnesium salts and titanium salt are composite mesoporous as 4-9 weight %, the spherical illite using the content sum that magnesium elements and titanium elements are counted respectively
The content of material is 91-96 weight %.
In a kind of preferred embodiment of the present invention, the dosage weight ratio of the magnesium salts and titanium salt can be 1：0.1-
2, preferably 1：0.5-2.
In the present invention, the preparation method of the catalyst also includes：In spherical illite mesoporous composite material with containing
After the contact of the mother liquor of magnesium salts and/or titanium salt, the composite for being loaded with magnesium salts and/or titanium salt is filtered and dried.Institute
State dry condition to have no particular limits, can be the conventional drying mode and condition of this area.It is preferred that the catalyst
Preparation be additionally included in after filtering and washing process before the drying, and/or process of lapping after drying.This area
Technical staff can be selected the condition of the washing and grinding according to practice situation, will not be repeated here.
In the present invention, the inert gas is the gas not reacted with raw material and product, such as can be ability
At least one of group 0 element gas, preferably nitrogen in domain conventional nitrogen or the periodic table of elements.
In the present invention, the illite in the spherical illite mesoporous composite material and there is three-dimensional cubic caged duct
The content of the meso-porous molecular sieve material of structure can be in interior variation in a big way, as long as making spherical illite mesoporous composite material
Feature meets above-mentioned condition.For example, meet material the spherical illite is mesoporous, relative to the institute of 100 parts by weight
The meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure is stated, the illitic content can be 1-100 parts by weight,
Preferably 10-80 parts by weight, more preferably 20-50 parts by weight.
In the present invention, the spherical illite mesoporous composite material can also contain the titanium dioxide introduced by silica gel
Silicon." silica being introduced into by silica gel " refers in the preparation process of the spherical illite mesoporous composite material, by silicon
The silica component that glue is brought into as preparing raw material in the spherical illite mesoporous composite material finally prepared.Described spherical
In illite mesoporous composite material, relative to the mesoporous molecular described in 100 parts by weight with three-dimensional cubic caged pore passage structure
Material is sieved, the content of the silica introduced by silica gel can be 1-200 parts by weight, preferably 20-180 parts by weight,
More preferably 50-150 parts by weight.
According to the present invention, the preparation method of the spherical illite mesoporous composite material may comprise steps of：
(1) meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure is provided or prepared with three-dimensional cubic cage
The filter cake of the meso-porous molecular sieve material of shape pore passage structure, as component a；
(2) provide silica gel or prepare the filter cake of silica gel, as component b；
(3) by the component a, component b, illite and the binding agent are mixed and ball milling, and will be obtained after ball milling
Solid powder water slurrying, then obtained slurry is spray-dried.
In the preparation process of above-mentioned spherical illite mesoporous composite material, mainly by controlling mesoporous material filter cake (group
The pore-size distribution control of the spherical illite mesoporous composite material of the ball is multi-modal by composition point a), and mainly passes through control
The component a, the component b, illite and binding agent (that is, are first well mixed simultaneously ball milling, then by ball milling by forming method processed
The solid powder obtained afterwards after water slurrying with being spray-dried) microscopic appearance of the spherical illite mesoporous composite material is controlled
To be spherical.
According to the present invention, in step (1), the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure is prepared
The process of filter cake can include：Template, potassium sulfate, sour agent and tetraethyl orthosilicate are subjected to the first mixing contact, and will be obtained
Mixture carry out crystallization and filtering.There is no particular limitation for the order of the first mixing contact, can be by template, sulfuric acid
Potassium, sour agent and tetraethyl orthosilicate are mixed simultaneously, can also mix any two or three, add other components mixing
Uniformly.According to a kind of preferred embodiment, first template, potassium sulfate and sour agent are well mixed, then add positive silicic acid
Ethyl ester is well mixed..
In the present invention, the dosage of the template, potassium sulfate and tetraethyl orthosilicate can be in interior variation in a big way, example
Mol ratio such as template, potassium sulfate and tetraethyl orthosilicate can be 1：100-800：50-300, preferably 1：150-700：80-
250, more preferably 1：200-400：100-200.
In the present invention, the template can be the conventional various templates in this area.For example, the template can be with
For triblock copolymer polyoxyethylene (PEO)-polyoxypropylene (PPO)-polyoxyethylene (PEO), the template can be by existing
Method known to a person skilled in the art be prepared, can also be by commercially available, for example, it is public to be purchased from Fuka
Department, trade name Synperonic F108, molecular formula PEO132-PPO50-PEO132, mean molecule quantity Mn=14600.Wherein,
The molal quantity of polyoxyethylene-poly-oxypropylene polyoxyethylene is according to the mean molecule quantity of polyoxyethylene-poly-oxypropylene polyoxyethylene
It is calculated.
In the present invention, the sour agent can be sour agent commonly used in the art, such as the sour agent can be hydrochloric acid.
There is no particular limitation for the dosage of the sour agent, can be in interior variation in a big way, it is preferable that sour agent and tetraethyl orthosilicate
The pH value of contact is 1-7.
In the present invention, the condition of the first mixing contact includes：Temperature can be 10-60 DEG C, preferably 25-60
℃；Time can be 10-72 hours, preferably 10-30 hours；PH value is 1-7, preferably 3-6.In order to be more beneficial for each material
Between uniform mixing, according to a kind of preferred embodiment of the present invention, the first mixing contact is carried out under agitation.
In the present invention, the condition of the crystallization includes：Temperature can be 30-150 DEG C, preferably 90-150 DEG C；Time
It can be 10-72 hours, preferably 10-40 hours.According to a kind of preferred embodiment, the crystallization passes through hydrothermal crystallization method
To implement.
In the present invention, there is the filter cake of the meso-porous molecular sieve material of three-dimensional cubic caged pore passage structure in above-mentioned preparation
During, it can be included with obtaining the process of filter cake by filtering：Washed, then filtered after filtration.Washing
Mode can be washing or alcohol wash in one or more.According to a kind of preferred embodiment, after filtration, spend from
Sub- water washs (washing times can be 2-10) repeatedly, is then dried to obtain former powder mesoporous material.Then by former powder mesoporous material
Washed under reflux conditions with ethanol, spherical mesoporous material filter cake is obtained after suction filtration.The bar washed under reflux conditions with ethanol
Part includes：Time can be 20-40 hours, and temperature can be 75-85 DEG C.
In step (1), " providing the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure " can be direct
Weigh or choose the product of the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure or prepare with three-dimensional
The meso-porous molecular sieve material of cube caged pore passage structure.The meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure
Preparation method can implement according to the conventional method, for example, its preparation method can include：Being prepared according to the above method has
The filter cake of the meso-porous molecular sieve material of three-dimensional cubic caged pore passage structure, then by gained filtration cakes torrefaction.
According to the present invention, in step (2), preparing the process of the filter cake of silica gel includes：By waterglass, polyalcohol and inorganic
Acid carries out the second mixing contact, and obtained mixture is filtered.
In the present invention, there is no particular limitation for the condition of the second mixing contact, can be according to preparing the normal of silica gel
Rule technique suitably determines.For example, the condition of the second mixing contact includes：Temperature can be 10-60 DEG C, preferably 20-
40℃；Time can be 1-5 hours, preferably 1-3 hours；PH value is 2-4.It is uniformly mixed between each material in order to be more beneficial for
Close, the process of the second mixing contact is preferably carried out under agitation.
In the present invention, the dosage of the waterglass, inorganic acid and polyalcohol can be in interior variation in a big way.For example,
The weight ratio of the waterglass, inorganic acid and polyalcohol can be 1-8：0.1-5：1, preferably 3-6：0.5-4：1, more preferably
3-6：1-3：1.
In the present invention, the waterglass is the aqueous solution of sodium metasilicate, and its concentration can be 3-20 weight %, is preferably
10-20 weight %.The inorganic acid can be various inorganic acids commonly used in the art, for example, can be sulfuric acid, nitric acid and
One or more in hydrochloric acid.The inorganic acid can use in pure form, can also be used in the form of its aqueous solution,
It is preferred that used in the form of the 3-20 weight % aqueous solution.The dosage of the inorganic acid is preferably so that contact of the waterglass with inorganic acid
The pH value of reaction system is 2-4.
In the present invention, there is no particular limitation for the species of the polyalcohol, such as can be glycerine and/or second two
Alcohol.
According to the present invention, in step (2), " offer silica gel " can directly weigh or choose silica gel product, can also
It is to prepare silica gel.Preparing the method for silica gel can implement according to the conventional method, such as can include：Prepared according to the above method
The filter cake of silica gel, then by gained filtration cakes torrefaction.
It is above-mentioned prepare the filter cake of silica gel during, can be included with obtaining the process of filter cake by filtering：Filtering
Afterwards, the content washed to sodium ion is below 0.2 weight %, preferably 0.01-0.03 weight %, is then filtered.Wash
The mode washed is the conventional selection of this area, can be that washing and/or alcohol are washed, actual conditions is ripe for those skilled in the art
Know, will not be repeated here.
According to the present invention, in step (3), the component a, component b, illite and binding agent dosage can be larger
In the range of change.For example, the dosage of the component a relative to 100 parts by weight, the dosage of the component b can be 1-200 weights
Measure part, preferably 20-180 parts by weight, more preferably 50-150 parts by weight；The illitic dosage can be 1-100 weight
Part, preferably 10-80 parts by weight, more preferably 20-50 parts by weight；The dosage of the binding agent is 1-150 parts by weight, is preferably
5-100 parts by weight, more preferably 10-80 parts by weight.The binding agent can be at least one in polyvinyl alcohol and polyethylene glycol
Kind, the polyethylene glycol can be the various degree of polymerization polyethylene glycol, such as can be PEG200-PEG8000 in one kind or
It is a variety of.It is further preferred that the binding agent is polyvinyl alcohol.
According to the present invention, in step (3), the ball milling can be carried out in ball mill, ball grinder in the ball mill
Inwall be preferably agate liner, the diameter of the abrading-ball in ball mill can be 2-3mm；The quantity of abrading-ball can be according to ball grinder
Size reasonably selected, for size be 50-150mL ball grinder, can generally use 1 abrading-ball；The abrading-ball
Material can be agate, polytetrafluoroethylene (PTFE) etc., preferably agate.The condition of the ball milling can include：The rotating speed of abrading-ball can
Think 200-800r/min, the temperature in ball grinder can be 15-100 DEG C, and the time of ball milling can be 0.1-100h；It is preferred that
Ground, the rotating speed of abrading-ball are 300-500r/min, and the temperature in ball grinder is 25-50 DEG C, and the time of ball milling is 5-20h.
According to the present invention, in step (3), the process by the solid powder water slurrying obtained after ball milling can be in 25-
Carried out at 60 DEG C.In pulping process, the weight ratio of the dosage of solid powder and water can be 1:0.1-5, preferably 1：0.5-
3.5。
According to the present invention, in step (3), the spray drying can be implemented according to the mode of routine, can be selected from pressure
At least one of gentle flow type spray seasoning of power spray drying process, centrifugal spray drying method.According to of the invention a kind of preferred
Embodiment, the spray drying uses centrifugal spray drying method.The spray drying can be carried out in atomizer.It is described
The condition of spray drying can include：Temperature can be 150-600 DEG C, and rotating speed can be 10000-15000r/min；It is preferred that feelings
Under condition, the condition of the spray drying includes：Temperature is 150-250 DEG C, and the rotating speed of rotation is 11000-13000r/min.
In step (3), when the filter that the component a is the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure
Cake, when the component b is the filter cake of silica gel, namely it is mesoporous with three-dimensional cubic caged pore passage structure to prepare when step (1)
The process of the filter cake of molecular screen material, when step (2) is the process for the filter cake for preparing silica gel, the spherical illite is composite mesoporous
The preparation method of material can also include：After the spray-drying process of step (3), taken off in the product obtained from spray drying
Template agent removing.The condition of the removed template method can include：Temperature can be 90-600 DEG C, preferably 300-600 DEG C；Time
Can be 10-80 hours, preferably 10-24h.
According to the present invention, the condition of the polymerisation can be the conventional condition in this area.For example, the polymerisation
Carry out in the presence of an inert gas, the condition of the polymerisation includes：Temperature can be 10-100 DEG C, and the time can be 0.5-
5h, pressure can be 0.1-2MPa；Preferably, temperature is 20-95 DEG C, time 1-4h, pressure 0.5-1.5MPa；Further
Preferably, temperature is 70-85 DEG C, time 1-2h, pressure 1-1.5MPa.
Pressure of the present invention refers to gauge pressure.
In the present invention, the polymerisation can be carried out in the presence of solvent, used in the polymerisation
Solvent is not particularly limited, for example, can be hexane.
According to the present invention, in situations where it is preferred, the method for vinyl polymerization includes：Under the polymerization conditions, it is being catalyzed
In the presence of agent and auxiliary agent, ethene is set to carry out polymerisation；Preferably, the auxiliary agent is alkyl aluminum compound.
In the present invention, the structure of the alkyl aluminum compound is shown in formula I：
AlRnX5 (3-n)Formulas I
In Formulas I, R can be respectively C1-C5Alkyl；X5The one kind that can be respectively in halogen group, it is preferably-Cl；n
For 0,1,2 or 3.
Preferably, the C1-C5Alkyl can be methyl, ethyl, n-propyl, isopropyl, normal-butyl, sec-butyl, isobutyl
One or more in base, the tert-butyl group, n-pentyl, isopentyl, tertiary pentyl and neopentyl.
In the present invention, the instantiation of the alkyl aluminum compound includes but is not limited to：Trimethyl aluminium, dimethylammonium chloride
Aluminium, triethyl aluminum, diethyl aluminum chloride, tri-n-n-propyl aluminum, diη-propyl aluminium chloride, three n-butylaluminums, three sec-butyl aluminium, three uncles
Butyl aluminium, di-n-butyl aluminium chloride and diisobutyl aluminum chloride.Most preferably, the alkyl aluminum compound is triethyl aluminum.
In the present invention, the dosage of the alkyl aluminum compound can also be the conventional selection in this area, usually, described
The mass ratio of alkyl aluminum compound and the catalyst amount can be 1：0.1-10；Under preferable case, the alkyl aluminum chemical combination
The mass ratio of thing and the catalyst amount is 1：0.2-8；More preferably 1：0.4-4.
In the present invention, the method for the vinyl polymerization can also include, after polymerisation terminates, to final reaction
Mixture carries out suction filtration separation, so as to which polyethylene particle powder be made.
Present invention also offers the polyethylene being prepared by the above method.
The present invention will be described in detail by way of examples below.
In the following Examples and Comparative Examples, polyoxyethylene-poly-oxypropylene polyoxyethylene is purchased from Fuka companies, trade name
For Synperonic F108, molecular formula PEO132-PPO50-PEO132, mean molecule quantity Mn=14600.
In following examples and comparative example, X-ray diffraction analysis are in the model purchased from German Bruker AXS companies
Carried out on D8Advance X-ray diffractometer；Scanning of the scanning electron microscope analysis in the model XL-30 purchased from FEI Co. of the U.S.
Carried out on electron microscope；Pore structure parameter analysis is inhaled de- in the nitrogen of the model Autosorb-1 purchased from Kang Ta companies of the U.S.
Carried out on attached instrument, wherein, before being tested, sample is deaerated 4 hours at 200 DEG C；X-ray fluorescence analysis is in dutch company
Carried out on model Axios-Advanced x-ray fluorescence analyzer.
The heap density of polyolefine powder is measured using method as defined in GB/T 1636-2008.
Melt index：Determined according to ASTM D1238-99.
The flour rate of polyethylene particle powder：Sieved and determined by 800 eye mesh screens, specifically, by the polyethylene particle
For powder by 800 mesh sieves, flour rate is the weight and the polyethylene tested through the polyethylene particle powder of 800 mesh sieves
The percentage of the weight of grain powder.
Embodiment 1
The present embodiment is used for the polyethylene for illustrating the ethene polymerization method of the present invention and obtaining.
(1) spherical illite mesoporous composite material is prepared
By 1.46g (0.0001mol) template F108,5.24g (0.03mol) K2SO4It is 2 (2N) with 60g equivalent concentration
Hydrochloric acid solution stir to F108 and be completely dissolved at 38 DEG C；
4.2g (0.02mol) tetraethyl orthosilicate is added in above-mentioned solution, stirred 15 minutes at 38 DEG C, it is quiet at 38 DEG C
Put 24 hours；
It is then transferred in the reactor of agate liner, crystallization 24 hours at 100 DEG C, is then filtered and be used in combination
Deionized water is washed 4 times, and former powder mesoporous material is obtained after drying；Former powder mesoporous material ethanol is flowed back at 78 DEG C washing 24
Hour, then suction filtration obtains having the filter cake A1 of the meso-porous molecular sieve material of three-dimensional cubic caged pore passage structure.
By the waterglass that concentration is 15 weight % and the sulfuric acid solution that concentration is 12 weight % and glycerine using weight ratio as
5：1：1 is mixed and haptoreaction 1.5 hours at 30 DEG C, then adjusts pH value to 3 with the sulfuric acid that concentration is 98 weight %,
Then obtained reaction mass is filtered, and it is 0.02 weight % to be washed with distilled water to sodium ions content, obtains silica gel
Filter cake B1.
10g filter cake A1,10g filter cake B1,5g illites and 5g polyvinyl alcohol of above-mentioned preparation are put into 100mL ball together
In grinding jar, wherein, the material of ball grinder is agate, and Material quality of grinding balls is agate, and a diameter of 3mm of abrading-ball, quantity is 1, rotating speed
For 400r/min.Ball grinder is closed, temperature is ball milling 5 hours at 25 DEG C in ball grinder, obtains solid powder；By the solid powder
End is dissolved in 25g deionized waters, at 200 DEG C in rotating speed be 12000r/min under be spray-dried；It will be obtained after spray drying
Product calcine 10h at 550 DEG C in Muffle furnace, removing F108 (template), obtain spherical illite mesoporous composite material
C1。
Spherical illite mesoporous composite material C1 is characterized with XRD, ESEM and nitrogen adsorption instrument.
Fig. 1 is X-ray diffracting spectrum, and as seen from the figure, spherical illite mesoporous composite material C1 has mesoporous material institute special
Some three-dimensional cubic caged pore passage structures.
Fig. 2 is spherical illite mesoporous composite material C1 microscopic appearance SEM figures, and as seen from the figure, spherical illite is mesoporous
Composite C1 microscopic appearance is the microballoon that particle diameter is 30-100 μm, and its good dispersion property.
Fig. 3 is spherical illite mesoporous composite material C1 graph of pore diameter distribution, and as seen from the figure, spherical illite is mesoporous
Composite C1 has double-pore structure distribution, and duct is uniform.
Spherical illite mesoporous composite material C1 pore structure parameter is as shown in table 1 below.
Table 1
*：First most probable pore size and the second most probable pore size are separated with comma：It is the first most probable pore size before comma,
It is the second most probable pore size after comma.
(2) catalyst is prepared
0.1g magnesium chlorides and 0.1g titanium tetrachlorides are dissolved in (four in 10mL tetrahydrofuran and the double solvents of isopropanol
The volume ratio of hydrogen furans and isopropanol is 1：1.2) catalyst mother liquor, is formed.It is at 45 DEG C that the spherical illites of 1g is composite mesoporous
Material C 1, which is added in mother liquor, impregnates 1h, then filters, and carries out washing 4 times with n-hexane, in 75 DEG C of dryings, and is ground
Mill, obtains catalyst D1.
Drawn by x-ray fluorescence analysis, in the catalyst D1 described in the present embodiment, in terms of element, magnesium elements contain
Measure as 7.6 weight %, the content of titanium elements is 1.4 weight %.
(3) vinyl polymerization
In 2L stainless steel polymerization autoclave, with nitrogen and ethene, respectively displacement three times, then adds 200mL hexanes, will
Kettle temperature rises to 80 DEG C, adds 800mL hexanes, and with the addition of hexane, the concentration for adding 2mL is 1mol/L triethyl aluminum
(TEA) hexane solution, 0.5g catalyst D1 is subsequently added into, is passed through ethylene gas, pressure is risen into 1.0MPa and is maintained
1.0MPa, separation is filtered after being reacted 1 hour at 70 DEG C, obtains polyethylene particle powder.Polyethylene particle powder is measured,
The heap density (BD) of polyethylene particle powder is 0.29g/mL, melt index MI2.16=0.3g/10min.It is computed determining, urges
The efficiency of agent is 760gPE/gcath.The weight % of flour rate ＜ 3 of gained polyethylene particle powder.
Embodiment 2
The present embodiment is used for the polyethylene for illustrating the ethene polymerization method of the present invention and obtaining.
(1) spherical illite mesoporous composite material is prepared
By 1.46g (0.0001mol) template F108,6.96g (0.04mol) K2SO4It is 2 (2N) with 60g equivalent concentration
Hydrochloric acid solution stir to F108 and be completely dissolved at 38 DEG C；
3.1g (0.015mol) tetraethyl orthosilicate is added in above-mentioned solution, 15min is stirred at 45 DEG C, it is quiet at 45 DEG C
Put 30h；
It is then transferred in the reactor of agate liner, crystallization 30 hours at 120 DEG C, is then filtered and be used in combination
Deionized water is washed 4 times, and former powder mesoporous material is obtained after drying；Former powder mesoporous material ethanol is flowed back at 78 DEG C washing 24
Hour, then suction filtration obtains having the filter cake A2 of the meso-porous molecular sieve material of three-dimensional cubic caged pore passage structure.
By the waterglass that concentration is 20 weight % and the sulfuric acid solution that concentration is 12 weight % and glycerine using weight ratio as
3：2：1 is mixed and the haptoreaction 3h at 40 DEG C, then adjusts pH value to 4 with the sulfuric acid that concentration is 98 weight %, then
Obtained reaction mass is filtered, and it is 0.02 weight % to be washed with distilled water to sodium ions content, obtains the filter of silica gel
Cake B2.
20g filter cake A2,10g filter cake B2,4g illites and 2g polyvinyl alcohol of above-mentioned preparation are put into 100mL ball together
In grinding jar, wherein, the material of ball grinder is agate, and Material quality of grinding balls is agate, and a diameter of 3mm of abrading-ball, quantity is 1, rotating speed
For 500r/min.Ball grinder is closed, temperature is ball milling 10h at 30 DEG C in ball grinder, obtains solid powder；By the solid powder
Be dissolved in 100g deionized waters, at 150 DEG C in rotating speed be 13000r/min under be spray-dried；By what is obtained after spray drying
Product calcines 15h in Muffle furnace at 600 DEG C, removing F108 (template), obtains spherical illite mesoporous composite material C2.
Spherical illite mesoporous composite material C2 pore structure parameter is as shown in table 2 below.
Table 2
*：First most probable pore size and the second most probable pore size are separated with comma：It is the first most probable pore size before comma,
It is the second most probable pore size after comma.
(2) catalyst is prepared
0.1g magnesium chlorides and 0.2g titanium tetrachlorides are dissolved in (four in 10mL tetrahydrofuran and the double solvents of isopropanol
The volume ratio of hydrogen furans and isopropanol is 1：1.5) catalyst mother liquor, is formed.It is at 60 DEG C, the spherical illites of 1g is composite mesoporous
Material C 2, which is added in mother liquor, impregnates 1h, then filters, and carries out washing 4 times with n-hexane, in 75 DEG C of dryings, and is ground
Mill, obtains catalyst D2.
Drawn by x-ray fluorescence analysis, in the catalyst D2 described in the present embodiment, in terms of element, magnesium elements contain
Measure as 2.9 weight %, the content of titanium elements is 1.0 weight %.
(3) vinyl polymerization
In 2L stainless steel polymerization autoclave, with nitrogen and ethene, respectively displacement three times, then adds 200mL hexanes, will
Kettle temperature rises to 75 DEG C, adds 900mL hexanes, and with the addition of hexane, the concentration for adding 2mL is 1mol/L triethyl aluminum
(TEA) hexane solution, 0.1g catalyst D2 is subsequently added into, is passed through ethylene gas, pressure is risen into 1.0MPa and is maintained
1.0MPa, separation is filtered after being reacted 1.5 hours at 75 DEG C, obtains polyethylene particle powder.The heap of gained polyethylene particle powder
Density (BD) is 0.23g/mL, melt index MI2.16=0.18g/10min.It is computed determining, the efficiency of catalyst is 700g
PE/gcat·h.The weight % of flour rate ＜ 3 of gained polyethylene particle powder.
Embodiment 3
The present embodiment is used for the polyethylene for illustrating the ethene polymerization method of the present invention and obtaining.
(1) spherical illite mesoporous composite material is prepared
By 1.46g (0.0001mol) template F108,3.48g (0.02mol) K2SO4It is 2 (2N) with 60g equivalent concentration
Hydrochloric acid solution stir to F108 and be completely dissolved at 38 DEG C；
2.1g (0.01mol) tetraethyl orthosilicate is added in above-mentioned solution, 15min is stirred at 35 DEG C, it is quiet at 35 DEG C
Put 20h；
It is then transferred in the reactor of agate liner, crystallization 20 hours at 90 DEG C, is then filtered and be used in combination
Deionized water is washed 4 times, and former powder mesoporous material is obtained after drying；Former powder mesoporous material ethanol is flowed back at 78 DEG C washing 24
Hour, then suction filtration obtains having the filter cake A3 of the meso-porous molecular sieve material of three-dimensional cubic caged pore passage structure.
By the waterglass that concentration is 10 weight % and the sulfuric acid solution that concentration is 12 weight % and glycerine using weight ratio as
6：3：1 is mixed and haptoreaction 1 hour at 45 DEG C, then adjusts pH value to 2 with the sulfuric acid that concentration is 98 weight %, so
Obtained reaction mass is filtered afterwards, and it is 0.02 weight % to be washed with distilled water to sodium ions content, obtains silica gel
Filter cake B3.
10g filter cake A3,15g filter cake B3,3g illites and 8g polyvinyl alcohol of above-mentioned preparation are put into 100mL ball together
In grinding jar, wherein, the material of ball grinder is agate, and Material quality of grinding balls is agate, and a diameter of 3mm of abrading-ball, quantity is 1, rotating speed
For 300r/min.Ball grinder is closed, temperature is ball milling 20 hours at 50 DEG C in ball grinder, obtains solid powder；By the solid
Powder is dissolved in 50g deionized waters, at 250 DEG C in rotating speed be 11000r/min under be spray-dried；It will be obtained after spray drying
To product calcine 24h at 400 DEG C in Muffle furnace, removing F108 (template), obtain the composite mesoporous material of spherical illite
Expect C3.
Spherical illite mesoporous composite material C3 pore structure parameter is as shown in table 3 below.
Table 3
*：First most probable pore size and the second most probable pore size are separated with comma：It is the first most probable pore size before comma,
It is the second most probable pore size after comma.
(2) catalyst is prepared
0.2g magnesium chlorides and 0.1g titanium tetrachlorides are dissolved in (four in 10mL tetrahydrofuran and the double solvents of isopropanol
The volume ratio of hydrogen furans and isopropanol is 1：1) catalyst mother liquor, is formed.By the composite mesoporous material of the spherical illites of 1g at 40 DEG C
Material C3, which is added in mother liquor, impregnates 3h, then filters, and carries out washing 4 times with n-hexane, in 75 DEG C of dryings, and is ground,
Obtain catalyst D3.
Drawn by x-ray fluorescence analysis, in the catalyst D3 described in the present embodiment, in terms of element, magnesium elements contain
Measure as 4.5 weight %, the content of titanium elements is 1.4 weight %.
(3) vinyl polymerization
In 2L stainless steel polymerization autoclave, with nitrogen and ethene, respectively displacement three times, then adds 200mL hexanes, will
Kettle temperature rises to 85 DEG C, adds 700mL hexanes, and with the addition of hexane, the concentration for adding 2mL is 1mol/L triethyl aluminum
(TEA) hexane solution, 1g catalyst D3 is subsequently added into, is passed through ethylene gas, pressure is risen into 1.0MPa and is maintained
1.0MPa, separation is filtered after being reacted 2 hours at 85 DEG C, obtains polyethylene particle powder.The heap of gained polyethylene particle powder is close
It is 0.28g/mL, melt index MI to spend (BD)2.16=0.29g/10min.It is computed determining, the efficiency of catalyst is 700g PE/
gcat·h.The weight % of flour rate ＜ 3 of gained polyethylene particle powder.
Comparative example 1
This comparative example is used to illustrate the ethene polymerization method of reference and obtained polyethylene.
Spherical illite mesoporous composite material and loaded catalyst are prepared according to method same as Example 1, wherein
Except that during step (1) prepares spherical illite mesoporous composite material, in the process for the filter cake for preparing silica gel
In, glycerine is not added, obtains spherical illite mesoporous composite material DC1 and loaded catalyst DD1.
Drawn by xrf analysis, in the catalyst DD1 described in the present embodiment, in terms of element, the content of magnesium elements is
2.1 weight %, the content of titanium elements is 1.0 weight %.
Spherical illite mesoporous composite material DC1 pore structure parameter is as shown in table 4 below.
Table 4
*：First most probable pore size and the second most probable pore size are separated with comma：It is the first most probable pore size before comma,
It is the second most probable pore size after comma.
(3) vinyl polymerization
The polymerization of ethene is carried out according to the method for embodiment 1, unlike, using the catalyst DD1 generations of identical weight part
For the catalyst D1 being prepared by embodiment 1.The heap density (BD) of gained polyethylene particle powder is 0.31g/mL, and melting refers to
Number MI2.16=0.32g/10min.It is computed determining, the efficiency of catalyst is 710g PE/gcath.Gained polyethylene particle
The weight % of flour rate ＞ 4 of powder.
Comparative example 2
Spherical illite mesoporous composite material and loaded catalyst are prepared according to the method for embodiment 1, it is different,
During preparing spherical illite mesoporous composite material, with the bar-shaped mesoporous silicon oxide SBA-15 of identical weight (purchased from Ji
High-tech limited company of woods university) instead of the filter cake of the meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure
A1, so as to which mesoporous composite material DC2 and loaded catalyst DD2 be made respectively.
(3) vinyl polymerization
The polymerization of ethene is carried out according to the method for embodiment 1, unlike, using the catalyst DD2 generations of identical weight part
For the catalyst D1 being prepared by embodiment 1.The heap density (BD) of gained polyethylene particle powder is 0.35g/mL, and melting refers to
Number MI2.16=0.34g/10min.It is computed determining, the efficiency of catalyst is 716g PE/gcath.Gained polyethylene particle
The weight % of flour rate ＞ 8 of powder.
Comparative example 3
Illite is calcined 10 hours for 400 DEG C under nitrogen protection, with eliminating hydroxide and Residual water, so as to obtain through heat
The illite of activation.
Method according to the step of embodiment 1 (2) prepares catalyst, except that, using the above-mentioned work of identical weight part
The illite of change replaces spherical illite mesoporous composite material C1, so as to which comparative catalyst DD3 be made.
(3) vinyl polymerization
The polymerization of ethene is carried out according to the method for embodiment 1, unlike, using the catalyst DD3 generations of identical weight part
For the catalyst D1 being prepared by embodiment 1.As a result fail to obtain spherical polyethylene product.
Comparative example 4
Spherical illite mesoporous composite material and loaded catalyst are prepared according to method same as Example 1, institute is not
With, during step (1) prepares spherical illite mesoporous composite material, by 10g filter cake A1,10g filter cake B1 and 5g Erie
Stone is put into 100mL ball grinder together, i.e., does not add binding agent polyvinyl alcohol.So as to which comparative catalyst DD4 be made.
(3) vinyl polymerization
The polymerization of ethene is carried out according to the method for embodiment 1, unlike, using the catalyst DD4 generations of identical weight part
For the catalyst D1 being prepared by embodiment 1.The heap density (BD) of gained polyethylene particle powder is 0.3g/mL, and melting refers to
Number MI2.16=0.38g/10min.It is computed determining, the efficiency of catalyst is 670g PE/gcath.Gained polyethylene particle
The weight % of flour rate ＞ 8 of powder.
It can be seen that from the result of above example 1-3 and comparative example 1-4 contrasts and use vinyl polymerization provided by the invention
During method, the heap density and melt index of obtained polyethylene product are relatively low, and non-breakable (the weight % of flour rate ＜ 3).
The preferred embodiment of the present invention described in detail above, still, the present invention are not limited in above-mentioned embodiment
Detail, in the range of the technology design of the present invention, a variety of simple variants can be carried out to technical scheme, this
A little simple variants belong to protection scope of the present invention.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means.In order to avoid unnecessary repetition, the present invention to it is various can
The combination of energy no longer separately illustrates.
In addition, various embodiments of the present invention can be combined randomly, as long as it is without prejudice to originally
The thought of invention, it should equally be considered as content disclosed in this invention.
Claims (12)
1. a kind of method of vinyl polymerization, this method include：Under the polymerization conditions, in the presence of a catalyst, enter ethene
Row polymerisation, it is characterised in that the catalyst contain spherical illite mesoporous composite material and be supported on it is described it is spherical she
Magnesium salts and/or titanium salt on sharp stone mesoporous composite material, wherein, the spherical illite mesoporous composite material contain illite and
Meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure, the average grain diameter of the spherical illite mesoporous composite material
For 30-100 microns, specific surface area is 40-120 meters squared per grams, and pore volume is 0.1-0.6 mls/g, and aperture is in bimodal distribution,
And most probable pore size corresponding to bimodal difference is 1-10 nanometers and 15-60 nanometers.
2. the method according to claim 11, wherein, on the basis of the gross weight of the catalyst, the spherical illite
The content of mesoporous composite material is 90-99 weight %, the magnesium salts and titanium salt respectively the content in terms of magnesium elements and titanium elements it
With for 1-10 weight %.
3. according to the method for claim 1, wherein, the preparation method of the catalyst includes, in the presence of an inert gas,
Spherical illite mesoporous composite material is contacted with the mother liquor containing magnesium salts and/or titanium salt；
Preferably, the condition of the contact includes：Temperature is 25-100 DEG C, time 0.1-5h.
4. the method according to claim 11, wherein, in the spherical illite mesoporous composite material, relative to 100 weights
The meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure of part is measured, the illitic content is 1-100 weights
Measure part.
5. according to the method for claim 1, wherein, the preparation method of the spherical illite mesoporous composite material include with
Lower step：
(1) meso-porous molecular sieve material with three-dimensional cubic caged pore passage structure is provided or prepared with three-dimensional cubic caged hole
The filter cake of the meso-porous molecular sieve material of road structure, as component a；
(2) provide silica gel or prepare the filter cake of silica gel, as component b；
(3) by the component a, component b, illite and the binding agent are mixed and ball milling, and consolidate what is obtained after ball milling
Obtained slurry, is then spray-dried by the water slurrying of body powder.
6. the method according to claim 11, wherein, in step (3), relative to the component a of 100 parts by weight use
Amount, the dosage of the component b are 1-200 parts by weight, and the illitic dosage is 1-100 parts by weight, the use of the binding agent
Measure as 1-150 parts by weight；
Preferably, the binding agent is at least one of polyvinyl alcohol and polyethylene glycol, more preferably polyvinyl alcohol.
7. according to the method for claim 5, wherein, in step (1), prepare with three-dimensional cubic caged pore passage structure
The process of the filter cake of meso-porous molecular sieve material includes：Template, potassium sulfate, sour agent and tetraethyl orthosilicate are carried out into the first mixing to connect
Touch, and obtained mixture is subjected to crystallization and filtering；
Preferably, the mol ratio of template, potassium sulfate and tetraethyl orthosilicate is 1：100-800：50-300；
It is highly preferred that the template is triblock copolymer polyoxyethylene-poly-oxypropylene polyoxyethylene；The sour agent is salt
Acid；
Even more preferably, the condition of the first mixing contact includes：Temperature is 10-60 DEG C, and the time is 10-72 hours,
PH value is 1-7；The condition of the crystallization includes：Temperature is 30-150 DEG C, and the time is 10-72 hours.
8. according to the method for claim 5, wherein, in step (2), preparing the process of the filter cake of silica gel includes：By water
Glass, polyalcohol and inorganic acid carry out the second mixing contact, and obtained mixture is filtered；
Preferably, the condition of the second mixing contact includes：Temperature is 10-60 DEG C, and the time is 1-5 hours, pH value 2-4；
It is highly preferred that the weight ratio of the waterglass, inorganic acid and polyalcohol is 1-8：0.1-5：1；The inorganic acid be sulfuric acid,
One or more in nitric acid and hydrochloric acid；The polyalcohol is glycerine and/or ethylene glycol.
9. according to the method for claim 5, wherein, in step (3), the condition of the ball milling includes：The rotating speed of abrading-ball
For 200-800r/min, the temperature in ball grinder is 15-100 DEG C, and the time of ball milling is 0.1-100 hours；The spray drying
Condition include：Temperature is 150-600 DEG C, rotating speed 10000-15000r/min.
10. according to the method for claim 5, wherein, the component a is with the mesoporous of three-dimensional cubic caged pore passage structure
The filter cake of molecular screen material, the component b are the filter cake of silica gel；Methods described also includes：Spray-drying process in step (3)
Afterwards, removed template method in the product obtained from spray drying；Preferably, the condition of the removed template method includes：Temperature is
90-600 DEG C, the time is 10-80 hours.
11. according to the method for claim 1, wherein, the polymerisation is carried out in the presence of an inert gas, the polymerization
The condition of reaction includes：Temperature is 10-100 DEG C, time 0.5-5h, pressure 0.1-2MPa.
12. the polyethylene being prepared as the method described in any one in claim 1-11.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7691773B2 (en) * | 2004-03-23 | 2010-04-06 | Samsung Sdi Co., Ltd. | Supported catalyst and method for preparing the same |
| CN105175586A (en) * | 2014-06-13 | 2015-12-23 | 中国石油化工股份有限公司 | Meso-porous composite material, preparation method thereof, catalyst ingredient preparation method, and polyethylene preparation method |
| CN105330768A (en) * | 2014-06-13 | 2016-02-17 | 中国石油化工股份有限公司 | Supported polyethylene catalyst ingredient and preparation method thereof, and supported polyethylene catalyst and application thereof |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7691773B2 (en) * | 2004-03-23 | 2010-04-06 | Samsung Sdi Co., Ltd. | Supported catalyst and method for preparing the same |
| CN105175586A (en) * | 2014-06-13 | 2015-12-23 | 中国石油化工股份有限公司 | Meso-porous composite material, preparation method thereof, catalyst ingredient preparation method, and polyethylene preparation method |
| CN105330768A (en) * | 2014-06-13 | 2016-02-17 | 中国石油化工股份有限公司 | Supported polyethylene catalyst ingredient and preparation method thereof, and supported polyethylene catalyst and application thereof |
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