CN106032277A - Titanium-silicon-aluminum molecular sieve, preparation method and applications thereof, and a cyclic ketone oxidation method - Google Patents
Titanium-silicon-aluminum molecular sieve, preparation method and applications thereof, and a cyclic ketone oxidation method Download PDFInfo
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Abstract
The invention relates to the field of molecular sieves, and mainly provides a titanium-silicon-aluminum molecular sieve, a preparation method and applications thereof. The titanium-silicon-aluminum molecular sieve comprises an aluminum element, a titanium element, a silicon element, and an oxygen element. The pore volume of the titanium-silicon-aluminum molecular sieve is 0.3 cm3/g or more. The total specific surface area is 200 m2/g or more, the external surface area is 30 m2/g or more, and the external surface area accounts for 10 to 55% of the total specific surface area. The benzene absorption amount is at least 65 mg for each gram of molecular sieve under following conditions: temperature: 25 DEG C, P/P0=0.10, and absorption time: 1 hour. Under N2 static absorption tests, the micro pore size distribution is in a range of 0.9 to 2.0 nm. The invention also provides a cyclic ketone oxidation method. The provided molecular sieve has a special physico-chemical structure, the benzene absorption amount is high, and the micro pore size distribution is in a range of 0.9 to 2.0 nm. The molecular sieve can achieve a better catalytic effect, when being applied to reactions that generate circular molecules (especially cyclic ketone molecules) or reactions that circular molecules (especially cyclic ketone molecules) participate in.
Description
Technical field
The present invention relates to a kind of titanium Si-Al molecular sieve, and the preparation method of a kind of titanium Si-Al molecular sieve, this
Invention further relates to application and the method for a kind of cyclic ketones oxidation of titanium Si-Al molecular sieve.
Background technology
HTS, is the molecular sieve that is made up of silicon, titanium, oxygen element of skeleton, in petroleum refining and
Petrochemical industry has a extensive future.Wherein, TS-1 molecular sieve is to introduce transition metal titanium to have
A kind of formed in the framework of molecular sieve of ZSM-5 structure has superior catalytic selective oxidation performance
Novel titanosilicate.
TS-1 not only has the catalysed oxidn of titanium, but also has the shape-selective work of ZSM-5 molecular sieve
With with excellent stability, successfully realize in Ketohexamethylene catalytic ammoxidation prepares the technique of cyclohexanone-oxime
Commercial Application.But, generally can be deteriorated at operation a period of time rear catalyst catalytic performance, catalyst
Deactivation phenomenom occurs.Inactivation is divided into again temporary inactivation and permanent inactivation.The catalyst of temporary inactivation
Can be allowed to recovered part or all active through regeneration, permanent inactivation then cannot be recovered by regeneration
Activity (activity after regeneration is less than the 50% of initial activity).HTS inactivation spy under alkaline environment
It not, after oximes catalyst TS-1 occurs permanent deactivation, cannot to recycle at present, mainly use heap
The mode of long-pending landfill processes.So, occupy land resource and the inventory space of preciousness, be badly in need of inactivation
The recovery and utilization technology exploitation of oximes catalyst.
Summary of the invention
It is an object of the invention to provide a kind of titanium Si-Al molecular sieve with special physical chemical characteristics and system thereof
Preparation Method and application.
Inventor is the HTS of inactivation under the HTS particularly alkaline environment to inactivation
Physico-chemical property after the most oximes catalyst generation permanent deactivation characterizes, and finds its crystalline framework base
This holding is complete, can be used.Inventor through substantial amounts of research it has furthermore been found that divide at titanium silicon
In the preparation process of son sieve, can use the titanium-silicon molecular sieve catalyst of inactivation (particularly under the conditions of alkalescence
The Ketohexamethylene oximate catalyst that the titanium-silicon molecular sieve catalyst of permanent deactivation such as inactivates is as the most former
Material), through specific preparation process (using acid, alkali to process successively and combine the step such as heat treatment and roasting),
The molecular sieve that catalytic oxidation performance is excellent can be retrieved, and the molecular sieve prepared has special thing
Change feature.
For realizing object defined above, a first aspect of the present invention, the invention provides a kind of titanium Si-Al molecular sieve,
This titanium Si-Al molecular sieve contains aluminium element, titanium elements, element silicon and oxygen element, and its pore volume is at 0.3cm3/g
Above, total specific surface area is at 200m2/ more than g, external surface area is at 30m2/ more than g, and external surface area accounts for
The ratio of total specific surface area is 10-55%；Described titanium Si-Al molecular sieve is at 25 DEG C, P/P0=0.10 and inhale
The attached time be the benzene adsorbance recorded under conditions of 1h be at least 65mg/g molecular sieve, N2Static adsorption is surveyed
There is under examination the micropore size distribution of 0.9-2.0nm scope.
A second aspect of the present invention, the invention provides the system of a kind of titanium Si-Al molecular sieve of the present invention
Preparation Method, the method includes:
(1) agent will be drawn off and mix making beating with acid solution, the serosity obtained will be carried out the first heat treatment, point
From obtaining the first solid, wherein, drawing off agent described in is the reaction unit using HTS as catalyst
Draw off agent；
(2) described first solid, aluminum source, titanium source are mixed laggard with alkali source in the presence of aqueous solvent
Row the second heat treatment.
A third aspect of the present invention, the invention provides the titanium Si-Al molecular sieve of the present invention in the oxidation reaction
Application.
According to the fourth aspect of the invention, the method that the invention provides the oxidation of a kind of cyclic ketones, the method bag
Including: cyclic ketones, oxidant are contacted with catalyst, described catalyst contains titanium sial of the present invention and divides
Son sieve.
The titanium Si-Al molecular sieve with special physical chemical characteristics structure of the present invention, its benzene adsorbance higher and
There is the advantage of the micropore size distribution of 0.9-2.0nm scope, such as, use it for ring molecule, especially
It is that cyclic ketone molecule participates in or the reaction of generation, it is possible to obtain more preferable catalytic effect.I.e. due to the present invention
Its benzene adsorbance of material higher and have 0.9-2.0nm scope micropore size distribution, in catalytic reaction
In be conducive to reactant and the diffusion of product molecule, to ring molecule, particularly cyclic ketone participate in catalysis
Oxidation reaction is advantageous particularly.
The method preparing titanium Si-Al molecular sieve of the present invention, it is possible to prepare the special spy with the present invention
Levy the titanium Si-Al molecular sieve of structure, such as benzene adsorbance higher and there is the micropore hole of 0.9-2.0nm scope
Footpath is distributed.And the method for the present invention make inactivation titanium-silicon molecular sieve catalyst be obtained by, become give up into
Precious.
Other features and advantages of the present invention will be described in detail in detailed description of the invention part subsequently.
Detailed description of the invention
Hereinafter the detailed description of the invention of the present invention is described in detail.It should be appreciated that this place is retouched
The detailed description of the invention stated is merely to illustrate and explains the present invention, is not limited to the present invention.
As it was previously stated, the invention provides a kind of titanium Si-Al molecular sieve, this titanium Si-Al molecular sieve contains aluminum unit
Element, titanium elements, element silicon and oxygen element, its pore volume is at 0.3cm3/ more than g, total specific surface area is at 200m2/g
Above, external surface area is at 30m2/ more than g, and external surface area to account for the ratio of total specific surface area be 10-55%；
Described titanium Si-Al molecular sieve is at 25 DEG C, P/P0=0.10 and adsorption time be the benzene recorded under conditions of 1h
Adsorbance is at least 65mg/g molecular sieve, N2Under static adsorption test, there is the micro-of 0.9-2.0nm scope
Hole pore-size distribution.
In the present invention, total specific surface area of titanium Si-Al molecular sieve refers to the total specific surface area of BET, and outer
Specific surface area refers to the surface area of the outer surface of titanium Si-Al molecular sieve, it is possible to referred to as external surface area, all
Can record according to ASTM D4222-98 standard method.
In the present invention, in the pore volume of titanium Si-Al molecular sieve and aperture refer to the pore volume in molecular sieve and hole respectively
Diameter, this is well known to those skilled in the art, and does not repeats.
Titanium Si-Al molecular sieve according to the present invention, the pore volume of the most described titanium Si-Al molecular sieve is
0.3-0.7cm3/ g, preferably 0.31-0.41cm3/g；Total specific surface area is 200-450m2/ g, is preferably
270-410m2/g；External surface area is 30-150m2/ g, preferably 40-120m2/ g, more preferably
40-70m2/g；It is 10-35%, preferably 13-30% that external surface area accounts for the ratio of total specific surface area, more preferably
For 17-25%；Described titanium Si-Al molecular sieve is at 25 DEG C, P/P0=0.10 and adsorption time be the bar of 1h
The benzene adsorbance recorded under part is at least 75mg/g molecular sieve, more preferably 80-110mg/g molecular sieve；
The micropore size of 0.9-2.0nm scope accounts for ratio >=5% of total micropore size abundance.
According to the aforementioned titanium Si-Al molecular sieve of the present invention, the micropore size of described titanium Si-Al molecular sieve except
(aperture such as MFI topological structure molecular sieve exists typical micro porous molecular sieve in the range of 0.4-0.7nm
Near 0.55nm) specific to outside pore-size distribution, in the range of 0.9-2.0nm, also have distribution.Here need
To be illustrated, in poromerics field, if micropore size distribution accounts in the range of 0.9-2.0nm
The ratio of total micropore size abundance < when 1%, then typically can ignore not by the pore size distribution of this partial pore
Meter, i.e. thinks and does not has micropore to be distributed in the range of 0.9-2.0nm, this is known to those skilled in the art.
Therefore, of the present invention at N2The micropore size under static adsorption test with 0.9-2.0nm scope is
Refer to that the distribution of the micropore size in the range of 0.9-2.0nm accounts for the ratio of total micropore size abundance > feelings of 1%
Condition.
According to the invention it is preferred to the micropore size distribution in the range of 0.4-0.7nm accounts for total micropore size and divides
Ratio≤95% of cloth amount, the micropore size distribution in the range of 0.9-2.0nm accounts for total micropore size abundance
Ratio >=5%；It is furthermore preferred that the micropore size distribution in the range of 0.4-0.7nm accounts for total micropore size
Ratio≤90% of abundance, the micropore size distribution in the range of 0.9-2.0nm accounts for the distribution of total micropore size
Ratio >=10% of amount.In the present invention, the method for testing of micropore size is well known to those skilled in the art,
As used N2The method tests such as static adsorption.
Therefore, according to the titanium Si-Al molecular sieve of the present invention, the micropore size of preferably 0.9-2.0nm scope accounts for
Ratio >=10% of total micropore size abundance, the micropore size distribution of more preferably 0.9-2.0nm scope accounts for total
Ratio 12-25% of micropore size abundance.
In the present invention, the micropore size of 0.9-2.0nm scope accounts for the ratio of total micropore size abundance by as follows
Formula calculates: [the quantity of the micropore size of 0.9-2.0nm scope/(micropore size of 0.9-2.0nm scope
Quantity)+(quantity of the micropore size in the range of 0.4-0.7nm)] × 100%.
Titanium Si-Al molecular sieve according to the present invention, preferably element silicon: titanium elements: the mol ratio of aluminium element is
100:(0.1-10): (0.1-8), more preferably element silicon: titanium elements: the mol ratio of aluminium element is 100:
(0.2-5): (0.2-7.5), further preferred element silicon: titanium elements: the mol ratio of aluminium element is 100:
(1-4): (0.5-5.5).
It is higher and have 0.9-2.0nm scope that the aforementioned titanium Si-Al molecular sieve of the present invention has benzene adsorbance
The advantages such as micropore size distribution, the present invention to the preparation method of aforementioned titanium Si-Al molecular sieve without particular/special requirement,
As long as the titanium Si-Al molecular sieve with said structure can be prepared, the one according to the present invention is excellent
The embodiment of choosing, present invention employing draws off agent and prepares aforementioned titanium Si-Al molecular sieve.
Therefore, as it was previously stated, the invention provides the preparation of a kind of titanium Si-Al molecular sieve of the present invention
Method, the method includes:
(1) agent will be drawn off and mix making beating with acid solution, the serosity obtained will be carried out the first heat treatment, point
From obtaining the first solid, wherein, drawing off agent described in is using HTS as catalyst activity component
Reaction unit draw off agent；
(2) described first solid, aluminum source, titanium source are mixed laggard with alkali source in the presence of aqueous solvent
Row the second heat treatment.
In the present invention, the described reaction unit using HTS as catalyst activity component draw off agent
Can be draw off from the various use HTSs device as catalyst activity component draw off agent,
Can be such as to draw off from using HTS as the oxidation reaction apparatus of catalyst activity component
Draw off agent.Described oxidation reaction can be various oxidation reaction, such as described using HTS as urging
The reaction unit of agent active component draw off agent can be Ammoximation reaction device draw off agent, hydroxylating
Reaction unit draw off agent and epoxidation reaction device draw off in agent one or more, be specifically as follows
Cyclohexanone oxamidinating reaction unit draw off agent, phenol hydroxylation reaction unit draw off agent and propylene epoxy
Change reaction unit draw off in agent one or more, preferably described in draw off agent be under alkaline environment reaction lose
The catalyst lived, therefore, for the present invention preferably described in draw off agent be cyclohexanone oxamidinating reaction unit
Draw off agent (such as the titanium-silicon molecular sieve TS-1 of inactivation, powdery, particle diameter is at 100-500nm).
In the present invention, described in draw off agent and refer to use solvent washing or the conventional regeneration processes such as roasting to make
Activation recovering to the catalyst of the inactivation in the case of initial activity 50%, (initial activity refers to identical
Reaction condition under, catalyst average activity within 1h.As in actual rings hexanone oximation reaction,
The initial activity of general catalyst to reach more than 95%).
The activity drawing off agent is different according to its source.Usually, the activity drawing off agent can be this
The 5-95% of HTS activity (that is, the activity of fresh dose) when fresh.Preferably, draw off
The activity of agent can be less than the 50% of this HTS activity when fresh, further preferably draws off
The activity of agent can be the 10-40% of this HTS activity when fresh.Described HTS
The activity of fresh dose is generally more than 90%, and usually more than 95%.
In the present invention, described in draw off agent and can derive from industry deactivator or react in the lab
After decaying catalyst.
Certainly, from the angle of preparation effect, the method for the present invention can also use fresh molecular sieve such as titanium
Si molecular sieves is as raw material, the most improper for cost control angularly, the method that the present invention provides,
The main catalyst containing HTS to inactivate, as raw material, is turned waste into wealth, thus has been saved cost.
In the present invention, the agent that draws off of each device uses the reaction of each device each to measure, as long as
Ensure, in identical device, under identical reaction condition, draw off the activity of agent less than fresh catalyst
Activity, be the present invention draws off agent.As it was previously stated, in the case of You Xuan, the activity drawing off agent is low
In the activity of fresh catalyst 50%.
In the present invention, by cyclohexanone oxamidinating reaction unit draw off agent as a example by, described activity is by following
Method measures:
Take TS-1 molecular sieve (by the method described in " Zeolites, 1992, Vol.12:943～950 "
Preparation, TiO2Weight/mass percentage composition be 2.1%) be placed in 100mL band continuous feed and membrane separation device
Slurry bed reactor in, under stirring, add water and the peroxide of 30wt% with the speed of 5.7mL/h
Change the mixture (water is 10:9 with the volume ratio of hydrogen peroxide) of hydrogen, add with the speed of 10.5mL/h
The mixture (volume ratio of Ketohexamethylene and the tert-butyl alcohol is 1:2.5) of Ketohexamethylene and the tert-butyl alcohol, with 5.7mL/h
Speed add 36wt% ammonia, above-mentioned three strands of material streams are for being simultaneously introduced, simultaneously with corresponding speed company
Continuous discharging, reaction temperature maintains 80 DEG C, every 1h to product sampling gas chromatogram after stable reaction
The composition of liquid phase is analyzed by method, uses below equation to calculate the conversion ratio of Ketohexamethylene and as titanium
The activity of si molecular sieves.The conversion ratio of the Ketohexamethylene=[(mole of the Ketohexamethylene of addition-unreacted hexamethylene
The mole of ketone)/the mole of Ketohexamethylene that adds] × 100%.Wherein, using the result of 1h as just
Begin activity.
With the method for the invention it is preferred to step (2) is carried out as follows: aluminum source and alkali source are existed
Mixed solution it is mixed to get, by described mixed solution and described first solid and titanium source in the presence of aqueous solvent
Described second heat treatment is carried out after mixing.So can improve the micropore hole of 0.9-2.0nm scope further
Footpath distribution accounts for the ratio of total micropore size abundance, and can improve the activity of titanium Si-Al molecular sieve.
With the method for the invention it is preferred to described making beating is carried out at normal temperatures and pressures.
The method according to the invention, in the case of specified otherwise, heat treatment is usually in situation about sealing
Under carry out at autogenous pressures.
With the method for the invention it is preferred to the temperature of the first heat treatment is 10-200 DEG C, more preferably
50-180 DEG C, more preferably 60-180 DEG C.
The method according to the invention, the time of described first heat treatment can be determined according to needs, pin
To the present invention, the time of the preferably first heat treatment is 0.5-36h, preferably 1-24h, more preferably 1-12h.
With the method for the invention it is preferred to the temperature of the second heat treatment is 100-200 DEG C, more preferably
120-180 DEG C, more preferably 140-170 DEG C.
With the method for the invention it is preferred to the time of described second heat treatment can be carried out really according to needs
Fixed, for the present invention, the time of the preferably second heat treatment is 0.5-24h, preferably 2-24h, more preferably
For 6-24h.
With the method for the invention it is preferred to the method for the present invention also includes: mix with acid solution agent will be drawn off
Before closing making beating, first draw off agent carry out roasting by described.
In the present invention, optional wider range of the condition of described roasting, for the preferred described roasting of the present invention
Condition include: the temperature of roasting is 300-800 DEG C, preferably 550-600 DEG C；The time of roasting is
2-12h, preferably 2-4h, the atmosphere of roasting includes air atmosphere；The condition bag of the most described roasting
Include: first at 350-600 DEG C of roasting 0.5-6h in nitrogen atmosphere, then at 350-600 DEG C in air gas
Roasting 0.5-12h in atmosphere.
With the method for the invention it is preferred to the concentration of described acid solution > 0.1mol/L, more preferably >=1mol/L,
Further preferably 2-15mol/L.In the present invention, the primary solvent of described acid solution is water, it is possible to foundation
Need to add other solvents aids.Thus prepared obtain its pore volume of titanium Si-Al molecular sieve, specific surface area,
Benzene adsorbance and becoming apparent from the feature of the micropore pore size distribution etc. of 0.9-2.0nm.
With the method for the invention it is preferred to draw off the mass ratio of agent, titanium source, aluminum source, acid, alkali source and water
For 100:(0.1-10): (0.1-10): (0.005-50): (0.5-50): (20-1000), preferably draw off
Agent, titanium source, aluminum source, acid, alkali source are 100:(0.5-10.0 with the mass ratio of water): (0.5-10.0): (1-15):
(1-20): (100-800), agent is drawn off with SiO2Meter, acid is with H+Meter, alkali source is with N or OH-Meter,
More preferably drawing off agent with sour mass ratio is 100:(10-15).
In the present invention, described HTS can be the common titanium silicon molecule with various topological structure
Sieve, such as: described HTS can selected from MFI structure HTS (such as TS-1),
The HTS (such as TS-2) of MEL structure, the HTS (such as Ti-Beta) of BEA structure,
The HTS (such as Ti-MCM-22) of MWW structure, hexagonal structure HTS (as
Ti-MCM-41, Ti-SBA-15), the HTS (such as Ti-MOR) of MOR structure, TUN knot
The HTS (such as Ti-TUN) of structure and the HTS (such as Ti-ZSM-48) of other structure.
Preferably, described HTS is selected from the HTS of MFI structure, the titanium of MEL structure
Si molecular sieves and the HTS of BEA structure.It is highly preferred that described HTS is MFI knot
The HTS of structure, such as TS-1 molecular sieve.
The method according to the invention, optional wider range of the kind of described acid, its can be organic acid and
/ or mineral acid, preferably mineral acid；Wherein, mineral acid can be HCl, sulphuric acid, perchloric acid, nitric acid
With one or more in phosphoric acid, preferably phosphoric acid；Described organic acid can be organic carboxylic of C1-C10
One or more in acid, preferably formic acid, acetic acid, propanoic acid, aphthenic acids peracetic acid and Perpropionic Acid.
The present invention provide method in, described titanium source can be organic titanium source (such as organic titanate) and
/ or inorganic ti sources (the most inorganic titanium salt).Wherein, inorganic ti sources can be TiCl4、Ti(SO4)2、TiOCl2、
One or more in titanium hydroxide, titanium oxide, nitric acid titanium salt and phosphoric acid titanium salt etc., organic titanium source is permissible
For one or more in fatty alcohol titanium and organic titanate.Described titanium source is preferably organic titanium source, enters one
Step is preferably organic titanate.It is M that described organic titanate preferably has structural formula4TiO4Organic
Titanate esters, wherein, M preferably has an alkyl of 1-4 carbon atom, and 4 M can identical or
Difference, the most described organic titanate selected from for isopropyl titanate, metatitanic acid n-propyl, butyl titanate and
One or more in tetraethyl titanate.The instantiation in described titanium source can be but be not limited to: TiOCl2、
Titanium tetrachloride, titanium sulfate, metatitanic acid orthocarbonate (include the various isomers of metatitanic acid orthocarbonate, such as metatitanic acid four
Isopropyl ester and metatitanic acid four n-propyl), (the various isomers of butyl titanate, such as metatitanic acid for butyl titanate
Four N-butyls) and tetraethyl titanate in one or more.
The method according to the invention, optional wider range of the kind of described alkali source, it can be organic base
Source and/or inorganic alkali source, wherein, inorganic alkali source can be ammonia or cation is alkali metal or alkaline-earth metal
Alkali, as being sodium hydroxide, potassium hydroxide, calcium hydroxide, sodium carbonate, potassium carbonate, hydroxide
Barium etc., described organic alkali source can be carbamide, aliphatic amine compound, aliphatic alcohol amines and season
One or more in ammonium alkali cpd.
In the present invention, described quaternary ammonium base can be various organic level Four ammonium alkali, and described aliphatic amine can be
Various NH3In at least one hydrogen by aliphatic alkyl (preferably alkyl) replace after formed compound,
Described aliphatic hydramine can be various NH3In at least one hydrogen (excellent by the aliphatic alkyl of hydroxyl
Elect alkyl as) replace after formed compound.
Specifically, described quaternary ammonium base can be for the quaternary ammonium base as shown in Formula II, and described aliphatic amine can be
The aliphatic amine that formula III represents, described aliphatic hydramine can be the aliphatic hydramine represented such as formula IV:
In Formula II, R5、R6、R7And R8It is respectively C1-C4Alkyl, including C1-C4Straight chained alkyl
And C3-C4Branched alkyl, such as: R5、R6、R7And R8Can be each methyl, ethyl, positive third
Base, isopropyl, normal-butyl, sec-butyl, isobutyl group or the tert-butyl group.
R9(NH2)n(formula III)
In formula III, n is the integer of 1 or 2.When n is 1, R9For C1～C6Alkyl, including C1~
C6Straight chained alkyl and C3-C6Branched alkyl, such as methyl, ethyl, n-pro-pyl, isopropyl, positive fourth
Base, sec-butyl, isobutyl group, the tert-butyl group, n-pentyl, neopentyl, isopentyl, tertiary pentyl and just oneself
Base.When n is 2, R9For C1-C6Alkylidene, including C1～C6Straight-chain alkyl-sub-and C3～C6
Branched alkylidene, such as methylene, ethylidene, sub-n-pro-pyl, sub-normal-butyl, sub-n-pentyl or Asia
N-hexyl.One during more preferably aliphatic amine compound is ethamine, n-butylamine, butanediamine and hexamethylene diamine
Or it is multiple
(HOR10)mNH(3-m)(formula IV)
In formula IV, m R10Identical or different, respectively C1-C4Alkylidene, including C1-C4's
Straight-chain alkyl-sub-and C3-C4Branched alkylidene, such as methylene, ethylidene, sub-n-pro-pyl and the positive fourth in Asia
Base；M is 1,2 or 3.It is further preferred that described aliphatic alcohol amines is monoethanolamine, diethanolamine
With one or more in triethanolamine.
One according to the present invention preferred embodiment, synthesizes, in order to improve further, the titanium sial obtained
The duct order of molecular sieve, the most described alkali source be sodium hydroxide, ammonia, ethylenediamine, n-butylamine,
Butanediamine, hexamethylene diamine, monoethanolamine, diethanolamine, triethanolamine, tetraethyl ammonium hydroxide and 4 third
One or more in base ammonium hydroxide.
Wherein, when in described alkali source containing ammonia, the mol ratio of alkali source is to include molecular forms NH3
With ionic species NH4 +The ammonia meter existed.
With the method for the invention it is preferred to described alkali source provides with the form of aqueous slkali, more preferably aqueous slkali
PH > 9.
The method according to the invention, source of aluminium is aluminum for providing the material of aluminum, preferably source of aluminium
One or more in colloidal sol, aluminium salt, aluminium hydroxide and aluminium oxide, Alumina gel preferably contains in terms of aluminium oxide
Amount is 10-50 weight %.
In the present invention, described aluminium salt can be inorganic aluminate and/or organic aluminium salt, and described organic aluminium salt is excellent
Electing the organic aluminium salt of C1-C10 as, described inorganic aluminate can be such as aluminum sulfate, sodium metaaluminate, chlorine
Change one or more in aluminum and aluminum nitrate.
In one of the present invention more preferably embodiment, described in draw off agent and molar concentration > 0.1mol/L
Acid solution mixing making beating process process be to carry out under acid solution counterflow condition, obtain with this understanding
Titanium Si-Al molecular sieve there is more obvious distinctive physical chemical characteristics.
According to the invention it is preferred to the method for the present invention also includes returning from the material of step (2) heat treatment
Receiving the step of product, the step reclaiming product is conventional method, is familiar with by those skilled in the art,
At this and have no special requirements, generally refer to product and filter, wash, be dried and the process of roasting.Wherein,
Described dry run can between room temperature-200 DEG C at a temperature of carry out, described roasting process can be
Between 300-800 DEG C first in nitrogen atmosphere after 0.5-6h in air atmosphere 3-12h carry out.
Divide owing to the benzene adsorbance of material of the present invention is higher and has the micropore size of 0.9-2.0nm scope
Cloth, is conducive to reactant and product molecule especially to ring molecule, particularly cyclic ketone in catalytic reaction
The catalytic oxidation participated in is advantageous particularly.
Present invention also offers the application in the oxidation reaction of the titanium Si-Al molecular sieve of the present invention.Anti-in oxidation
Ying Zhong, such as, in cyclic ketones oxidation reaction, the selectivity of target product such as hydroxy acid and catalysis activity are substantially
Improve.
According to the fourth aspect of the invention, the method that the invention provides the oxidation of a kind of cyclic ketones, the method bag
Including: cyclic ketones, oxidant are contacted with catalyst, described catalyst contains titanium sial of the present invention and divides
Son sieve.
The method according to the invention, the condition of described contact can be the conventional selection of this area, for this
Invention, the condition preferably contacted includes: temperature is 40-150 DEG C, preferably 40-120 DEG C；Pressure is
0.1-3.0MPa, preferably 0.1-2.5MPa；Time is 0.1-24h, and cyclic ketones with the mol ratio of oxidant is
1:1-20, preferably 1:2-15.
With the method for the invention it is preferred to the mass ratio of cyclic ketones and catalyst is 0.5-150:1.
With the method for the invention it is preferred to described contact is carried out in the presence of solvent, wherein, preferred solvent
It is 1-200:1, preferably 2-150:1 with the mass ratio of catalyst；The most described solvent selected from water,
One or more in alcohol, straight or branched ketone, acid and nitrile, the most described solvent is water, C1-C5
One or more in the acid of alcohol, the straight or branched ketone of C2-C6, the nitrile of C2-C8 and C2-C5.
The method according to the invention, described solvent is preferably selected from water, methanol, ethanol, normal propyl alcohol, isopropyl
In alcohol, the tert-butyl alcohol, isobutanol, acetone, butanone, acetonitrile, propionitrile, benzene acetonitrile, acetic acid and propanoic acid
One or more, the most described solvent one in acetonitrile, acetone, methanol, acetic acid and water or
Multiple, the most described solvent is acetonitrile and/or acetone.
The method according to the invention, charging order, also without special requirement, can be initially charged cyclic ketones, it is possible to
To be initially charged oxidant or solvent.
With the method for the invention it is preferred to described oxidant is hydrogen peroxide, tert-butyl hydroperoxide, mistake
One or more in oxidation isopropylbenzene, cyclohexyl hydroperoxide, peracetic acid and Perpropionic Acid, described
Cyclic ketones is one or more in Ketohexamethylene, Ketocyclopentane and methyl cyclohexanone.
The method according to the invention, after haptoreaction, reacted material can use common distillation or
The method of rectification, after isolating target product, unreacted cyclic ketones raw material etc. is without separating-purifying, directly
Back within and reaction unit continues reaction.
Below by embodiment, the invention will be further described, but and is not so limited the interior of the present invention
Hold.
In comparative example and embodiment, agents useful for same is commercially available analytical reagent.
Wherein, the hydrogen peroxide solution that oxidants hydrogen peroxide is 30 weight % by concentration provides.
The agent that draws off of following example and comparative example obtains as follows, and uses following methods to measure titanium
The activity of si molecular sieves (including that HTS draws off agent, and fresh dose of HTS).
Take TS-1 molecular sieve (by the method described in " Zeolites, 1992, Vol.12:943～950 "
Preparation, TiO2Weight/mass percentage composition be 2.1%) be placed in 100mL band continuous feed and membrane separation device
In slurry bed reactor, under stirring, the speed with 5.7mL/h adds water and the peroxidating of 30wt%
The mixture (water is 10:9 with the volume ratio of hydrogen peroxide) of hydrogen, adds ring with the speed of 10.5mL/h
The mixture (volume ratio of Ketohexamethylene and the tert-butyl alcohol is 1:2.5) of hexanone and the tert-butyl alcohol, with 5.7mL/h
Speed add 36wt% ammonia, above-mentioned three strands of material streams are for being simultaneously introduced, simultaneously with corresponding speed company
Continuous discharging, reaction temperature maintains 80 DEG C, every 1h to product sampling gas chromatogram after stable reaction
The composition of liquid phase is analyzed by method, uses below equation to calculate the conversion ratio of Ketohexamethylene and as titanium
The activity of si molecular sieves.The conversion ratio of the Ketohexamethylene=[(mole of the Ketohexamethylene of addition-unreacted ring
The mole of hexanone)/the mole of Ketohexamethylene that adds] × 100%.
The Ketohexamethylene conversion ratio that the most i.e. 1h measures is its initial activity, and its value is 99.5%.Warp
The most about 168h, after Ketohexamethylene conversion ratio is dropped to 50% by initial 99.5%, isolates and urges
Regenerate (at 570 DEG C in air atmosphere roasting 4h) by roasting regeneration mode after agent, then proceed to
In cyclohexanone oxamidinating reacts, the step for of being repeated, until the activity after Zai Sheng is less than initial
The 50% of activity, the oximes catalyst sample at this moment inactivated draws off agent, according to aforementioned as the present invention
Method obtains drawing off agent SH-1 (activity is 50%) successively, and SH-2 (activity is 40%), SH-3 (live
Property is 25%), SH-4 (activity is 10%).
In each embodiment and comparative example, X-ray diffraction (XRD) the crystalline phase figure of sample is at Siemens
It is measured on D5005 type x-ray diffractometer, is 22.5 °-25.0 ° with sample and authentic specimen at 2 θ
Between the ratio of diffracted intensity (peak height) sum at the five fingers diffractive features peak represent that sample is relative to benchmark
The degree of crystallinity of sample, here sample on the basis of comparative example 1 sample, its degree of crystallinity is calculated as 100%, respectively
The relative crystallinity data of sample are shown in Table 1.The benzene adsorbance of sample, pore volume, pore-size distribution, always than table
Area and external surface area measure on Micromeritics company ASAP2405 static nitrogen adsorption instrument, tool
Volume data is shown in Table 1.Mole composition of the elements such as the aluminum of sample, titanium and silicon is in Rigaku motor strain formula meeting
Measuring on society 3271E type Xray fluorescence spectrometer, concrete data are shown in Table 2.
In comparative example and embodiment:
Comparative example 1
This comparative example explanation routine utilizes estersil not contain the titanium silicon molecule of aluminum for the preparation of silicon source hydrothermal crystallizing
The process of sieve sample.
Tetraethyl orthosilicate, isopropyl titanate are mixed with TPAOH, and adds appropriate distilled water
Stirring mixing, mole consists of tetraethyl orthosilicate among reaction system: isopropyl titanate: tetrapropyl hydrogen-oxygen
Change ammonium: water=100:5:10:200, wherein, tetraethyl orthosilicate is with SiO2Meter；In normal pressure and 60 DEG C
Lower hydrolysis 1.0h, then at 75 DEG C, stir 3h, then mixed liquor is put into rustless steel sealed reactor,
At a temperature of 170 DEG C, constant temperature places 3d, obtains the mixture of crystallization product；This mixture is filtered,
Wash with water, and in 110 DEG C of dry 60min, obtain molecular screen primary powder, and in 550 DEG C of roasting temperatures
3h, obtains the HTS of hydro-thermal direct crystallization, and its XRD crystalline phase is MFI structure.
Comparative example 2
This comparative example explanation routine utilizes the HTS that estersil contains aluminum for the preparation of silicon source hydrothermal crystallizing
The process of sample.
Tetraethyl orthosilicate, aluminum isopropylate., isopropyl titanate are mixed with TPAOH, and adds
Appropriate distilled water stirring mixing, mole consists of tetraethyl orthosilicate among reaction system: isopropyl titanate:
Aluminum isopropylate.: TPAOH: water=100:5:2:10:200, wherein tetraethyl orthosilicate
With SiO2Meter；At normal pressure and 60 DEG C, hydrolyze 1.0h, then at 75 DEG C, stir 3h, then by mixed liquor
Putting into rustless steel sealed reactor, at a temperature of 170 DEG C, constant temperature places 3d, obtains the mixed of crystallization product
Compound；This mixture is filtered, washes with water, and in 110 DEG C of dry 60min, obtains molecular screen primary
Powder, and in 550 DEG C of roasting temperature 3h, obtain the titanium Si-Al molecular sieve of hydro-thermal direct crystallization, its XRD
Crystalline phase figure is consistent with comparative example 1 is MFI structure.
Comparative example 3
This comparative example illustrates the process of the HTS sample dip loading aluminum utilizing comparative example 1 to prepare.
HTS prepared by comparative example 1 and sodium metaaluminate aqueous solution, wherein HTS
It is 10:2:25 with the mass ratio of sodium metaaluminate and water, at normal pressure and 60 DEG C, stirs 6h, then will
This mixture filters, washes with water, and in 110 DEG C of dry 60min, and in 550 DEG C of roasting temperatures
3h, must be loaded with the HTS of aluminum, and its XRD crystalline phase is MFI structure.
Comparative example 4
The explanation of this comparative example utilizes the process drawing off agent SH-2 sample dip loading aluminum.
Agent SH-2 and sodium metaaluminate aqueous solution will be drawn off, wherein draw off agent and sodium metaaluminate and water
Mass ratio be 10:0.5:10, at normal pressure and 40 DEG C stir 12h, then by this mixture filter,
Wash with water, and in 110 DEG C of dry 60min, and in 550 DEG C of roasting temperature 3h, aluminum must be loaded with
HTS, its XRD crystalline phase is MFI structure.
Comparative example 5
The explanation of this comparative example utilizes the process drawing off agent SH-3 dip loading aluminum.
By SH-3 and sodium metaaluminate aqueous solution, wherein HTS and sodium metaaluminate and water
Mass ratio is 10:1:50, stirs 12h at normal pressure and 40 DEG C, is then filtered by this mixture, uses
Water washs, and in 110 DEG C of dry 60min, and in 550 DEG C of roasting temperature 3h, aluminum must be loaded with
HTS, its XRD crystalline phase is MFI structure.
Comparative example 6
The explanation of this comparative example utilizes the process drawing off agent SH-4 dip loading aluminum.
By SH-4 and sodium metaaluminate aqueous solution, wherein HTS and sodium metaaluminate and water
Mass ratio is 10:2:20, stirs 3h, then filtered, use water by this mixture at normal pressure and 50 DEG C
Washing, and in 110 DEG C of dry 60min, and in 550 DEG C of roasting temperature 3h, the titanium of aluminum must be loaded with
Silicon materials, its XRD crystalline phase is MFI structure.
Embodiment 1
This example demonstrates that method and product that the present invention provides.
In room temperature (20 DEG C, remaining comparative example is identical with embodiment) normal pressure (0.1MPa, remaining comparative example
Identical with embodiment) under, first by the hydrochloric acid water of Ketohexamethylene oximate catalyst SH-2 Yu 1mol/L of inactivation
Solution mixing making beating, then processes 12h by mixed serum mix and blend at 80 DEG C；Will after solid-liquid separation
Solid, aluminum source aluminum sulfate, titanium source titanium sulfate will be mixed after mixing with sodium hydrate aqueous solution (pH is 12)
Closing liquid and put into rustless steel sealed reactor, process 12h at 170 DEG C, wherein, quality of material consists of
The Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali: water=100:1:1:10:5:
250, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is with OH-Meter.By gained
Product filters, washes with water, and dries 120min in 110 DEG C, then at 550 DEG C of roasting temperature 3h,
Obtaining molecular sieve, its XRD crystalline phase figure is consistent with comparative example 1, and illustrate to obtain is to have MFI structure
Titanium Si-Al molecular sieve.
Comparative example 7
The explanation of this comparative example utilizes the process of dip loading aluminum after agent SH-2 acid treatment that draws off.
At normal temperatures and pressures, first by the hydrochloric acid water of Ketohexamethylene oximate catalyst SH-2 Yu 1mol/L of inactivation
Solution mixing making beating, then processes 12h by mixed serum mix and blend at 80 DEG C；After solid-liquid separation
To the SH-2 of acid treatment, then it is mixed with aluminum sulfate aqueous solution, wherein HTS and sulphuric acid
The mass ratio of aluminum and water is 10:2:20, stirs 3h, then by this mixture at normal pressure and 50 DEG C
Filter, wash with water, and in 110 DEG C of dry 60min, and in 550 DEG C of roasting temperature 3h, obtain negative
Being loaded with the titanium silicalite material of aluminum, its XRD crystalline phase is MFI structure.
Embodiment 2
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, first by molten for the hydrochloric acid of Ketohexamethylene oximate catalyst SH-3 with 5mol/L of inactivation
Liquid mixing making beating, then processes 1h by mixed serum mix and blend at 60 DEG C；Will be solid after solid-liquid separation
Body, aluminum source Alumina gel (content is 20 weight %), titanium source butyl titanate and TPAOH water
After solution (pH is 10) mixing, mixed liquor is put into rustless steel sealed reactor, process at 150 DEG C
12h, wherein quality of material consists of the Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali:
Water=100:2:0.5:15:15:200, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid with
H+Meter, alkali is with OH-Meter.Then according to the method for embodiment 1 reclaims product, it is thus achieved that titanium Si-Al molecular sieve,
Its XRD crystalline phase figure is consistent with comparative example 1.
Embodiment 3
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, the nitric acid by Ketohexamethylene oximate catalyst SH-4 with 8mol/L of inactivation is water-soluble
Liquid mixing making beating, then processes 2h by mixed serum mix and blend at 100 DEG C；Will be solid after solid-liquid separation
Body, aluminum source aluminium hydroxide, titanium source titanium tetrachloride will be mixed after mixing with ethylenediamine solution (pH is 11)
Close liquid and put into rustless steel sealed reactor, hydrothermal treatment consists 18h at 140 DEG C, wherein, quality of material group
Become the Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali: water=100:5:2:10:
5:150, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is in terms of N.Then
Product is reclaimed, it is thus achieved that molecular sieve, its XRD crystalline phase figure and comparative example 1 one according to the method for embodiment 1
Cause.
Embodiment 4
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, first by the sulphuric acid water of Ketohexamethylene oximate catalyst SH-1 Yu 5mol/L of inactivation
Solution mixing making beating, then processes 1h by mixed serum mix and blend at 120 DEG C；Will after solid-liquid separation
Solid, aluminum source aluminum chloride, titanium source tetraisopropyl titanate mix with n-butylamine aqueous solution (pH is 12.0)
After mixed liquor is put into rustless steel sealed reactor, at 170 DEG C process 12h, wherein, quality of material
Consist of the Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali: water=100:1:1:2:
2:50, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is in terms of N.By institute
Obtain product to filter, wash with water, and dry 120min in 110 DEG C, then at 550 DEG C of roasting temperatures
3h, it is thus achieved that molecular sieve, its XRD crystalline phase figure is consistent with comparative example 1.
Embodiment 5
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, first by the perchloric acid of Ketohexamethylene oximate catalyst SH-2 Yu 2mol/L of inactivation
Aqueous solution is pulled an oar, and then mixed serum mix and blend at 70 DEG C is processed 5h；After solid-liquid separation
By mixed liquor after solid, aluminum source aluminium oxide, titanium source tetraethyl titanate are mixed with ammonia (pH is 11)
Putting into rustless steel sealed reactor, process 12h at 170 DEG C, wherein quality of material consists of inactivation
Ketohexamethylene oximate catalyst: titanium source: aluminum source: acid: alkali: water=100:0.5:1:5:20:100,
The Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is in terms of N.By products therefrom mistake
Filter, wash with water, and dry 120min in 110 DEG C, then at 550 DEG C of roasting temperature 3h, it is thus achieved that
Molecular sieve, its XRD crystalline phase figure is consistent with comparative example 1.
Embodiment 6
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, first by the acetic acid of Ketohexamethylene oximate catalyst SH-2 Yu 12mol/L of inactivation
Aqueous solution is pulled an oar, and then mixed serum mix and blend at 160 DEG C is processed 6h；After solid-liquid separation
By solid, aluminum source aluminum chloride, titanium source TiOCl2Will after mixing with diethanolamine aqueous solution (pH is 11)
Rustless steel sealed reactor put into by mixed liquor, processes 24h at 170 DEG C, and wherein, quality of material forms
Ketohexamethylene oximate catalyst for inactivation: titanium source: aluminum source: acid: alkali: water=100:6:0.2:12:
18:500, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is in terms of N.So
After reclaim product according to the method for embodiment 1, it is thus achieved that molecular sieve, its XRD crystalline phase figure and comparative example 1
Unanimously.
Embodiment 7
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, first by the sulphuric acid of Ketohexamethylene oximate catalyst SH-2 Yu 0.5mol/L of inactivation
Aqueous solution is pulled an oar, and then mixed serum mix and blend at 130 DEG C is processed 4h；After solid-liquid separation
By solid, aluminum source aluminum phosphate, titanium source butyl titanate and tetraethyl ammonium hydroxide aqueous solution (pH is 11)
After mixing, mixed liquor is put into rustless steel sealed reactor, at 170 DEG C, processes 12h, wherein, material
Quality group becomes the Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali: water=100:1:1:
1:1:800, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is with OH-Meter.
Then according to the method for embodiment 1 reclaims product, it is thus achieved that molecular sieve, its XRD crystalline phase figure and comparative example
1 is consistent.
Embodiment 8
This example demonstrates that method and product that the present invention provides.
At normal temperatures and pressures, first by the phosphoric acid of Ketohexamethylene oximate catalyst SH-2 Yu 15mol/L of inactivation
Aqueous solution is pulled an oar, and then mixed serum mix and blend at 180 DEG C is processed 3h；After solid-liquid separation
Will after solid, aluminum source aluminum nitrate, titanium source titanium sulfate are mixed with sodium hydrate aqueous solution (pH is 14)
Rustless steel sealed reactor put into by mixed liquor, processes 6h at 150 DEG C, and wherein, quality of material consists of
The Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali: water=100:10:1:10:15:
600, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is with OH-Meter.Then press
Method according to embodiment 1 reclaims product, it is thus achieved that molecular sieve, its XRD crystalline phase figure is consistent with comparative example 1.
Embodiment 9
This example demonstrates that method and product that the present invention provides.
Molecular sieve is prepared according to the method for embodiment 8, except for the difference that in quality of material composition, the ring of inactivation
Hexanone oximate catalyst: acid=100:5, the XRD crystalline phase figure of gained sample is consistent with comparative example 1.
Embodiment 10
This example demonstrates that method and product that the present invention provides.
Molecular sieve is prepared according to the method for embodiment 8, except for the difference that in quality of material composition, the ring of inactivation
Hexanone oximate catalyst: acid=100:100, the XRD crystalline phase figure of gained sample is consistent with comparative example 1.
Embodiment 11
This example demonstrates that method and product that the present invention provides.
Preparing molecular sieve according to the method for embodiment 8, except for the difference that the concentration of phosphate aqueous solution is
0.2mol/L, the XRD crystalline phase figure of gained sample is consistent with comparative example 1.
Embodiment 12
This example demonstrates that method and product that the present invention provides.
Prepare molecular sieve according to the method for embodiment 8, except for the difference that, agent SH-2 will be drawn off and carry out roasting
Then carrying out follow-up making beating, heat treatment process, wherein, the condition of roasting includes: in sky at 570 DEG C
Roasting 4h in gas atmosphere, the XRD crystalline phase figure of gained sample is consistent with comparative example 1.
Embodiment 13
This example demonstrates that method and product that the present invention provides.
Preparing molecular sieve according to the method for embodiment 8, except for the difference that mixed serum is airtight quiet at 180 DEG C
Only processing 3h, the XRD crystalline phase figure of gained sample is consistent with comparative example 1.
Embodiment 14
This example demonstrates that method and product that the present invention provides.
Prepare molecular sieve according to the method for embodiment 2, except for the difference that substitute HCl with phosphoric acid.Gained sample
XRD crystalline phase figure consistent with comparative example 1.
Embodiment 15
This example demonstrates that method and product that the present invention provides.
Prepare molecular sieve according to the method for embodiment 2, except for the difference that, agent SH-3 will be drawn off and carry out roasting
Then carrying out follow-up making beating, heat treatment process, wherein, the condition of roasting includes: in sky at 570 DEG C
Roasting 4h in gas atmosphere, the XRD crystalline phase figure of gained sample is consistent with comparative example 1, gained sample
XRD crystalline phase figure is consistent with comparative example 1.
Embodiment 16
Preparing molecular sieve according to the method for embodiment 2, except for the difference that, the agent that draws off of use is SH-1,
Remaining condition is the most identical, and the XRD crystalline phase figure of gained sample is consistent with comparative example 1.
Embodiment 17
Preparing molecular sieve according to the method for embodiment 2, except for the difference that, raw material addition sequence changes:
At normal temperatures and pressures, first by molten for the hydrochloric acid of Ketohexamethylene oximate catalyst SH-3 with 5mol/L of inactivation
Liquid mixing making beating, then processes 1h by mixed serum mix and blend at 60 DEG C；Obtain after solid-liquid separation
Solid, by aluminum source Alumina gel (content is 20 weight %), (pH is with TPAOH aqueous solution
10) it is mixed to get mixed solution, described mixed solution is mixed with described solid and titanium source butyl titanate
After mixed liquor is put into rustless steel sealed reactor, at 150 DEG C process 12h, wherein quality of material group
Become the Ketohexamethylene oximate catalyst of inactivation: titanium source: aluminum source: acid: alkali: water=100:2:0.5:15:
15:200, the Ketohexamethylene oximate catalyst of inactivation is with SiO2Meter, acid is with H+Meter, alkali is with OH-Meter.So
After according to embodiment 1 method reclaim product, it is thus achieved that titanium Si-Al molecular sieve, its XRD crystalline phase figure is with right
Ratio 1 is consistent.
Table 1
From the results shown in Table 1:
Its pore volume of titanium Si-Al molecular sieve prepared by the preferred process of the present invention is more than 0.3cm3/ g, benzene adsorbance is big
In 65mg/g, total specific surface area is 200-450m2/ g, wherein, external surface area is 30-150m2/ g, and
External surface area accounts for the ratio of total specific surface area between 10%-35%；Titanium silicon prepared by the preferred process of the present invention
Its ratio accounting for total micropore size abundance at the micropore size of 0.9-2.0nm scope of molecular sieve is > 5%.
It can also be seen that from the result of table 1:
Its relative crystallinity of HTS prepared by the preferred process of the present invention, pore volume, total specific surface area,
The data such as external surface area, 0.9-2.0nm pore-size distribution, benzene adsorbance fully meet product of the present invention
All features.Relative, either comparative example 1 utilizes the titanium silicon not containing aluminum that estersil is prepared for silicon source
Molecular sieve, comparative example 2 utilize the HTS containing aluminum, comparative example 3 profit that estersil prepared for silicon source
The HTS containing aluminum prepared with the HTS load aluminum of comparative example 1 preparation, or right
Ratio 4-6 utilize draw off the agent load titanium silicalite material that obtains of aluminum and comparative example 7 to draw off agent acid treated negative
Carry the titanium silicalite material that obtains of aluminum, its relative crystallinity, pore volume, total specific surface area, external surface area,
The data such as 0.9-2.0nm pore-size distribution, benzene adsorbance cannot meet whole features of product of the present invention.As
Its pore volume of the molecular sieve of comparative example 1 only has 0.264cm3/ g, external surface area 24m2/ g, and external surface area accounts for
The ratio of total specific surface area is about 5%.
Testing example
Catalyst molecule sieve, Ketohexamethylene, hydrogen peroxide source and solvent first prepared by comparative example and embodiment
Alcohol is 1:2:5, wherein solvent methanol matter according to the mol ratio of Ketohexamethylene with hydrogen peroxide and solvent methanol
Amount is for 20g, and solvent methanol is 20:1 with the mass ratio of catalyst, temperature be 60 DEG C of pressure be 1.5MPa
Under carry out react 2h.
Table 2
From the results shown in Table 2: the catalyst Ti Si-Al molecular sieve of the present invention is anti-for cyclic ketones oxidation
Should, hydroxy acid selectivity is high, and the effective rate of utilization of oxidant is high.
The preferred embodiment of the present invention described in detail above, but, the present invention is not limited to above-mentioned reality
Execute the detail in mode, in the technology concept of the present invention, can be to the technical side of the present invention
Case carries out multiple simple variant, and these simple variant belong to protection scope of the present invention.
Claims (16)
1. a titanium Si-Al molecular sieve, it is characterised in that this titanium Si-Al molecular sieve contains aluminium element, titanium
Element, element silicon and oxygen element, its pore volume is at 0.3cm3/ more than g, total specific surface area is at 200m2/ g with
On, external surface area is at 30m2/ more than g, and external surface area to account for the ratio of total specific surface area be 10-55%；
Described titanium Si-Al molecular sieve is at 25 DEG C, P/P0=0.10 and adsorption time be the benzene recorded under conditions of 1h
Adsorbance is at least 65mg/g molecular sieve, N2Under static adsorption test, there is the micro-of 0.9-2.0nm scope
Hole pore-size distribution.
Titanium Si-Al molecular sieve the most according to claim 1, wherein, described titanium Si-Al molecular sieve
Pore volume is 0.3-0.7cm3/ g, total specific surface area is 200-450m2/ g, external surface area is 30-150m2/ g,
It is 10-35% that external surface area accounts for the ratio of total specific surface area；Described titanium Si-Al molecular sieve 25 DEG C,
P/P0=0.10 and adsorption time be the benzene adsorbance recorded under conditions of 1h be at least 75mg/g molecule
Sieve；The micropore size of 0.9-2.0nm scope accounts for ratio >=5% of total micropore size abundance.
Titanium Si-Al molecular sieve the most according to claim 1, wherein, the micropore of 0.9-2.0nm scope
It is 12-25% that aperture accounts for the ratio of total micropore size abundance, element silicon: titanium elements: rubbing of aluminium element
That ratio is 100:(0.1-10): (0.1-8).
4. a preparation method for titanium Si-Al molecular sieve described in any one in claim 1-3, should
Method includes:
(1) agent will be drawn off and mix making beating with acid solution, the serosity obtained will be carried out the first heat treatment, point
From obtaining the first solid, wherein, drawing off agent described in is using HTS as catalyst activity component
Reaction unit draw off agent；
(2) described first solid, aluminum source, titanium source are mixed laggard with alkali source in the presence of aqueous solvent
Row the second heat treatment.
Preparation method the most according to claim 4, wherein, described using HTS as urging
The reaction unit of agent active component draw off agent be Ammoximation reaction device draw off agent.
6. according to the preparation method described in claim 4 or 5, wherein, step (2) is as follows
Carry out: aluminum source and alkali source are mixed to get mixed solution, by described mixed solution in the presence of aqueous solvent
Described second heat treatment is carried out with described first solid and titanium source after mixing.
7. according to the preparation method described in claim 4 or 5, wherein, the temperature of the first heat treatment is
10-200℃；The temperature of the second heat treatment is 100-200 DEG C.
8. according to the preparation method described in claim 4 or 5, wherein, the time of the first heat treatment is
0.5-36h；The time of the second heat treatment is 0.5-24h.
9. according to the preparation method described in claim 4 or 5, wherein, the method also includes: inciting somebody to action
Draw off before agent mixes making beating with acid solution, first draw off agent carry out roasting by described.
10. according to the preparation method described in claim 4 or 5, wherein, the concentration of described acid solution
>0.1mol/L；Draw off agent: titanium source: aluminum source: acid: alkali source: the mass ratio of water is 100:(0.1-10):
(0.1-10): (0.005-50): (0.5-50): (20-1000), agent is drawn off with SiO2Meter, acid is with H+
Meter, alkali source is with N or OH-Meter.
11. according to the preparation method described in claim 4 or 5, and wherein, described HTS is
MFI structure, described in draw off that the activity of agent is this catalyst activity when fresh less than 50%.
12. according to the preparation method described in claim 4 or 5, wherein, described acid be organic acid and/
Or mineral acid；Described alkali source is one or more in ammonia, aliphatic amine, aliphatic hydramine and quaternary ammonium base；
Source of aluminium is one or more in Alumina gel, aluminium salt, aluminium hydroxide and aluminium oxide；Described titanium source is selected
From inorganic titanium salt and/or organic titanate.
13. claim 1-3 are appointed in titanium Si-Al molecular sieve described in any one and claim 4-12
The titanium Si-Al molecular sieve that a described preparation method of anticipating prepares application in the oxidation reaction.
The method of 14. 1 kinds of cyclic ketones oxidations, the method includes: cyclic ketones, oxidant are contacted with catalyst,
It is characterized in that, described catalyst contains the titanium Si-Al molecular sieve in claim 1-3 described in any one
Or the titanium Si-Al molecular sieve that in claim 4-12, preparation method described in any one prepares.
15. methods according to claim 14, wherein, the condition of described contact includes: temperature
For 40-150 DEG C, pressure is 0.1-3.0MPa, time 0.1-24h, and cyclic ketones is 1 with the mol ratio of oxidant:
1-20, cyclic ketones is 0.5-150:1 with the mass ratio of catalyst；Described oxidant is hydrogen peroxide, tertiary fourth
In base hydrogen peroxide, dicumyl peroxide, cyclohexyl hydroperoxide, peracetic acid and Perpropionic Acid one
Planting or multiple, described cyclic ketones is one or more in Ketohexamethylene, Ketocyclopentane and methyl cyclohexanone.
16. according to the method described in claims 14 or 15, and wherein, described contact is in the presence of solvent
Carrying out, wherein, the mass ratio of solvent and catalyst is 1-200:1, and described solvent is selected from water, alcohol, straight
One or more in chain or side chain ketone, acid and nitrile.
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| CN106362682A (en) * | 2016-10-26 | 2017-02-01 | 南京大学 | Biomass gas adsorbent based on dynamic separation and preparation method thereof |
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| CN110143905A (en) * | 2018-02-13 | 2019-08-20 | 中国石油化工股份有限公司 | The method for preparing Perpropionic Acid |
| CN110143905B (en) * | 2018-02-13 | 2021-05-14 | 中国石油化工股份有限公司 | Process for preparing peroxypropionic acid |
| CN110317128B (en) * | 2018-03-30 | 2021-09-07 | 中国石油化工股份有限公司 | Method for preparing propylene glycol monomethyl ether |
| CN110317128A (en) * | 2018-03-30 | 2019-10-11 | 中国石油化工股份有限公司 | The method for preparing propylene glycol monomethyl ether |
| CN108706716A (en) * | 2018-06-22 | 2018-10-26 | 浙江海洋大学 | The processing method of itrogenous organic substance in a kind of waste water |
| CN111484031A (en) * | 2019-01-28 | 2020-08-04 | 中国石油化工股份有限公司 | Modified titanium silicalite molecular sieve, preparation method and application thereof, and thioether oxidation method |
| CN111484031B (en) * | 2019-01-28 | 2023-03-10 | 中国石油化工股份有限公司 | Modified titanium-silicon molecular sieve, preparation method and application thereof, and thioether oxidation method |
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