CN107511166A - Mercerising molecular sieve catalyst, preparation method and application - Google Patents
Mercerising molecular sieve catalyst, preparation method and application Download PDFInfo
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- CN107511166A CN107511166A CN201610440822.0A CN201610440822A CN107511166A CN 107511166 A CN107511166 A CN 107511166A CN 201610440822 A CN201610440822 A CN 201610440822A CN 107511166 A CN107511166 A CN 107511166A
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/04—Catalysts comprising molecular sieves having base-exchange properties, e.g. crystalline zeolites
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/18—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the mordenite type
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C6/00—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions
- C07C6/08—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond
- C07C6/12—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond of exclusively hydrocarbons containing a six-membered aromatic ring
- C07C6/123—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions by conversion at a saturated carbon-to-carbon bond of exclusively hydrocarbons containing a six-membered aromatic ring of only one hydrocarbon
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2229/00—Aspects of molecular sieve catalysts not covered by B01J29/00
- B01J2229/10—After treatment, characterised by the effect to be obtained
- B01J2229/24—After treatment, characterised by the effect to be obtained to stabilize the molecular sieve structure
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Abstract
The present invention relates to a kind of mercerising molecular sieve catalyst, preparation method and application.The mercerising molecular sieve catalyst, in terms of parts by weight, including following component：A) 92~99 parts of mercerising molecular sieve；B) 1~8 part of sial glue caking agent；The step of sial glue caking agent is contacted by silicon source, silicon source and alkali obtains.
Description
Technical field
The present invention relates to a kind of mercerising molecular sieve catalyst, preparation method and application.
Background technology
Mordenite molecular sieve (MOR) is one of earliest zeolite molecular sieve of human knowledge, Barrer in 1948 et al. profits
It is mineralizer with sodium carbonate, using mixing silicic acid gel and sodium aluminate aqueous solution hydrothermal crystallizing at 265~295 DEG C, people first
Work synthesizes modenite, and typical chemical formula is Na8[Al8Si4O96].24H2O.MOR structures have four-membered ring, five-membered ring, six
Yuan of rings, octatomic ring and twelve-ring, main aperture road are one-dimensional twelve-ring duct, and aperture is oval, aperture be 0.65 nanometer ×
0.70 nanometer, main aperture road is identical with octatomic ring duct, and octatomic ring pore size is 0.26 nanometer × 0.57 nanometer.Modenite point
Son sieve has excellent heat-resisting, acidproof and water vapor performance due to its stronger acidity and unique pore passage structure, extensive
Catalyst or carrier material as many important catalytic reactions in chemical industry.Such as be hydrocracked, hydroisomerizing, disproportionation and
Alkylation, it is particularly applied to normal alkane isomerization reaction, aromatics isomerization and transalkylation reaction and toluene disproportionation process
Deng field when show excellent performance, while be also commonly used for gas or liquid mixture separation.Using mercerising molecular sieve as activity
Catalyst made from component has been successfully applied to toluene disproportionation paraxylene technique.
Especially, in order to meet the requirement of commercial Application, molecular sieve and the additives such as binding agent, pore creating material need to be mixed into
Type, the catalyst with certain size, shape and intensity is made.But the addition of binding agent can more cover the activity of molecular sieve
Center, at the same can in limiting catalyst as active component molecular sieve content, the content of general molecular sieve is less than 80 matter
Measure %.Therefore, the quantity in the activated centre in the mercerising molecular sieve catalyst of the shaping of commercialization is far below the silk before shaping
Optical molecule sieves.
In order to overcome the problem of containing binding agent, activated centre in catalyst less, document CN102039152B discloses one
The preparation method of kind binder free mercerising molecular sieve catalyst, mercerising molecular sieve catalyst is prepared by steam phase auxiliary crystallization.
However, this method turns brilliant required time length (10~200 hours), and then cause catalyst strength to reduce, can not meet that industry should
It is required that；Meanwhile 5 mass % binding agent is still remained in the catalyst of gained.
In addition, it was found by the inventors of the present invention that catalyst strength influences significantly on catalytic performance.In toluene disproportionation system to two
In the reaction of ethylbenzene, the compression strength of catalyst is not the higher the better to be urged, it is necessary to find suitable compression strength and just can guarantee that
The catalytic performance of agent.
The content of the invention
The technical problems to be solved by the invention are that prior art uses Ludox, aluminum oxide bonding to be present for binding agent
Catalyst strength is too high when agent dosage is big, molecular sieve content is low, catalytic activity is low, and consumption of binder hour catalyst strength is low,
Efflorescence is serious；And the problem of long the time required to secondary crystallization.The present invention provides a kind of new mercerising molecular sieve catalyst.The catalysis
Agent is realized the shaping of molecular sieve using very small amount of binding agent can, molecule has directly been made using Alusil as binding agent
The mercerising molecular sieve catalyst that content is not less than 95% is sieved, is that can obtain the catalyst that intensity is high, activity is good without secondary crystallization,
Meet requirement of the toluene disproportionation p-Diethylbenzene reaction to catalyst, be adapted to large-scale industrial production.
In order to solve the above technical problems, the technical scheme that the present invention takes is as follows：A kind of mercerising molecular sieve catalyst, with weight
Measure number meter, including following component：
A) 92~99 parts of mercerising molecular sieve；
B) 1~8 part of sial glue caking agent；
The step of sial glue caking agent is contacted by silicon source, silicon source and alkali obtains；Silicon source is with SiO2Meter, silicon source
With Al2O3Meter, alkali silicon mol ratio alkali/SiO2=0~0.3, silica alumina ratio SiO2/Al2O3=25~85.
In above-mentioned technical proposal, the preferred alkali/SiO of alkali silicon mol ratio2=0.02~0.3, more preferably alkali/SiO2=0.03~
0.22, more preferably alkali/SiO2=0.04~0.18, most preferably alkali/SiO2=0.06~0.12.
In above-mentioned technical proposal, the preferred SiO of silica alumina ratio2/Al2O3=25~60, more preferably SiO2/Al2O3=30~
50。
In above-mentioned technical proposal, the silicon source is Y selected from Ludox, smoke silica gel, waterglass or formula4-nSiXnContain
At least one of silicon compound；Formula Y4-nSiXnIn, n is 1~4 integer, and Y is alkenyl group, and X is selected from Cl, methoxyl group
OMe, ethyoxyl OEt or trimethylsiloxy group OSiMe3.Silicon source is preferably at least one of Ludox, smoke silica gel.
In above-mentioned technical proposal, source of aluminium is in sodium aluminate, aluminium hydroxide, aluminum sulfate, aluminum nitrate or aluminium chloride
It is at least one.
In above-mentioned technical proposal, the alkali is selected from quaternary ammonium base, using alkali metal or alkali earth metal as cation
At least one of alkali；The quaternary ammonium base is selected from TMAH, tetraethyl ammonium hydroxide, TPAOH, four
Butyl ammonium hydroxide, N, N, N- front three adamantyl ammonium hydroxide or dimethyl diethyl ammonium hydroxide.Alkali is preferably NaOH
Or at least one of KOH.
In above-mentioned technical proposal, in terms of parts by weight, the content of mercerising molecular sieve is preferably 95~99 parts, more preferably 96
~99 parts；The content of sial glue caking agent is preferably 1~5 part, more preferably 1~4 part.
In above-mentioned technical proposal, the compression strength of the mercerising molecular sieve catalyst for 60~120 newton/centimetre, preferably
For 65~100 newton/centimetre, more preferably 65~90 newton/centimetre.
In above-mentioned technical proposal, in terms of parts by weight, the catalyst includes 0~0.5 part of phosphorus.
In above-mentioned technical proposal, in terms of parts by weight, the catalyst includes 0~0.5 part of thulium.
In above-mentioned technical proposal, the thulium is selected from least one of yttrium, lanthanum, cerium or neodymium.
The content of each component is on the basis of the mercerising molecular sieve after roasting in mercerising molecular sieve of the present invention.
The present invention also provides a kind of preparation method of mercerising molecular sieve catalyst.It the described method comprises the following steps：
A) synthesis state mercerising molecular sieve is provided；
B) synthesis state mercerising molecular sieve, silicon source, silicon source and the alkali straight forming obtain the mercerising molecular sieve catalyst；
Wherein, the silicon source is Y selected from Ludox, smoke silica gel, waterglass or formula4-nSiXnSilicon-containing compound in
At least one；Formula Y4-nSiXnIn, n is 1~4 integer, and Y is alkenyl group, and X is selected from Cl, methoxyl group OMe, ethyoxyl
OEt or trimethylsiloxy group OSiMe3；
Source of aluminium is selected from least one of sodium aluminate, aluminium hydroxide, aluminum sulfate, aluminum nitrate or aluminium chloride；
The alkali is selected from quaternary ammonium base, using alkali metal or alkali earth metal as at least one of alkali of cation；
Silicon source is with SiO2Meter, silicon source is with Al2O3Meter, alkali silicon mol ratio alkali/SiO2=0~0.3, silica alumina ratio SiO2/
Al2O3=25~85.
In above-mentioned technical proposal, the formula Y4-nSiXnIn, Y is methyl, ethyl or propyl group；The quaternary ammonium base is selected from four
Ammonium hydroxide, tetraethyl ammonium hydroxide, TPAOH, TBAH, N, N, N- trimethyl adamantane
Base ammonium hydroxide or dimethyl diethyl ammonium hydroxide.
In above-mentioned technical proposal, the preferred alkali/SiO of alkali silicon mol ratio2=0.02~0.3, more preferably alkali/SiO2=0.03~
0.22, more preferably alkali/SiO2=0.04~0.18, most preferably alkali/SiO2=0.06~0.12.
In above-mentioned technical proposal, the preferred SiO of silica alumina ratio2/Al2O3=25~60, more preferably SiO2/Al2O3=30~
50。
In above-mentioned technical proposal, the silicon source is selected from least one of Ludox, smoke silica gel.
In above-mentioned technical proposal, the alkali is selected from least one of NaOH or KOH.
In the inventive method, when using sodium aluminate, (composition of sodium aluminate is according to Al2O3And Na2O form represents) it is silicon source
When, alkali can be brought into, now no longer can separately add alkali source.But use the aluminium selected from aluminium hydroxide, aluminum sulfate, aluminum nitrate or aluminium chloride
When salt is silicon source, then need to add alkali source.The computational methods of alkali silicon mol ratio are：In alkali and silicon source in alkali silicon mol ratio=silicon source
Silicon mol ratio+alkali source in alkali and silicon source in silicon mol ratio.Such as when using Ludox as silicon source, sodium aluminate
(Al2O343.0 weight %, Na2The weight % of O 35.0) be silicon source, sodium hydroxide be alkali source, then alkali silicon mol ratio=2 × sodium aluminate
The material of silicon in amount/Ludox of the material of amount+sodium hydroxide of the material of silicon in amount/Ludox of the material of middle sodium oxide molybdena
Amount；When to use Ludox for silicon source, aluminum nitrate be silicon source, sodium hydroxide is alkali source, then the thing of alkali silicon mol ratio=sodium hydroxide
The amount of the material of silicon in amount/Ludox of matter.The calculating of this alkali is also that aluminium hydroxide and aluminium salt exist according to what is calculated after roasting
It is exactly Al after roasting2O3, alkali is equivalently employed without, so needing exogenously added alkali.And then show as Al after sodium aluminate roasting2O3And Na2O,
Therefore exogenously added alkali is not had to.
State mercerising molecular sieve is synthesized described in the inventive method, refers to synthesize according to hydrothermal crystallization method known in the art
, the mercerising molecular sieve of not fired removed template method.
In the inventive method, the straight forming of the synthesis state mercerising molecular sieve and silicon source, silicon source and alkali, which can use, to be squeezed
Go out the method for forming.Wherein it is possible to add pore creating material, the pore creating material be selected from sesbania powder, methylcellulose, polyethers (such as polyethylene glycol,
At least one of P123, F127).The mass ratio for synthesizing the silica in state mercerising molecular sieve and pore creating material is 1:(0.005~
0.2), preferably 1:(0.01~0.1).Catalyst after shaping is the cylinder of 0.3~1.2 centimetre of length, the cross section of cylinder
For circular, square, bunge bedstraw herb shape, cloverleaf pattern, annular or star, cross section maximum radial dimension is 0.08~0.3 centimetre.Urge
Agent can also carry out ammonium exchange, steam treatment.
The preparation method of the catalyst containing P is in the present invention：In terms of parts by weight, by 1 part of mercerising molecular sieve catalyst and 5
~50 parts of mass fractions 0.1~15%, preferably 0.3~5% phosphoric acid contacts 1~10 hour at 20~100 DEG C, by solid product
Separation, drying, roasting, obtain the mercerising molecular sieve catalyst containing P.P can improve the stability at catalyst acid center.
The preparation method of the catalyst containing rare earth element is in the present invention：In terms of parts by weight, 1 part of mercerising molecular sieve is urged
Agent and 5~50 parts of mass fractions 0.1~10%, the aqueous solution of preferably 0.3~5% rare earth metal salt connect at 20~100 DEG C
Touch 1~10 hour, solid product is separated, dry, is calcined, obtains the mercerising molecular sieve catalyst containing rare earth element.Rare earth metal
Acidity can be adjusted.
Mercerising molecular sieve catalyst provided by the invention, catalytic performance is good in the reaction of toluene disproportionation p-Diethylbenzene, can
To be applied to as catalyst in the reaction of toluene disproportionation p-Diethylbenzene.
The present inventor uses Ludox or aluminum oxide to bond by largely testing discovery, prior art
Agent, catalyst strength is too high when consumption of binder is big, molecular sieve content is low, catalytic activity is low；Consumption of binder hour catalyst
Low intensity, efflorescence are serious.And secondary crystallization is long the time required to preparing Adhesive-free Molecular Sieve；Also, although prior art is claimed
Adhesive-free Molecular Sieve compression strength made from secondary crystallization is high, still, it was found by the inventors of the present invention that in toluene disproportionation system pair
In the fixed bed reaction of diethylbenzene, the compression strength of catalyst is not the higher the better.When the compression strength of catalyst is more than 120N/
During cm, such as 130N/cm, the catalytic performance of catalyst now is significantly lower than the catalyst that compression strength is 120N/cm.Cause
This, it was found by the inventors of the present invention that the compression strength for the mercerising molecular sieve catalyst of toluene disproportionation p-Diethylbenzene should be controlled
System is between 60~120N/cm, and preferably compression strength is 65~100N/cm, and more preferably compression strength is 65~90N/cm.In order to
The mercerising molecular sieve catalyst of such compression strength is obtained, it was found by the inventors of the present invention that working as silicon source (such as Ludox) and aluminium
The in-situ preparation Alusil that chemically reacts can occur in the basic conditions for source (such as sodium aluminate), and course of reaction is very fast, it is only necessary to 5
Minute reacts complete, and the sial adhesiveness of generation is big, and molecular sieve is crosslinked together.According to this characteristic of Alusil, adopt
Binding agent is used as by the use of Alusil, it is only necessary to which the binding agent no more than 5 weight % is the shaping that catalyst can be achieved, also, gained is urged
The compression strength of agent is higher than 60N/cm, preferably 60~120N/cm, is particularly suitable as the catalysis of toluene disproportionation p-Diethylbenzene
Agent, achieve preferable technique effect.
Heretofore described mercerising molecular sieve catalyst, the method for molecular sieve silica alumina ratio chemical analysis determine.
Heretofore described mercerising molecular sieve catalyst, the compression strength of molecular sieve using pressure testing machine to roasting after
Catalyst tested, method of testing is：The catalyst granules that length L is 0.4~0.6 centimetre is chosen, by catalyst granules
It is laterally disposed on test platform, gradually increases pressure to catalyst and be crushed, instrument is recorded when catalyst is crushed and applied automatically
The pressure F (newton, N) added, F and L ratio (F/L) are the compression strength of single catalyst.10 catalyst of test resist
The compression strength that its average value is the catalyst is taken after Compressive Strength.
Binder content computational methods are in heretofore described mercerising molecular sieve catalyst：Synthesize state mercerising molecular sieve
Weight after being calcined 5 hours in 550 DEG C, air atmosphere is A, during straight forming silicon source, silicon source and alkali source used 550 DEG C,
Weight after being calcined 5 hours in air atmosphere is B, then content=B/ (A+B) × 100% of binding agent.
Brief description of the drawings
Fig. 1 is【Embodiment 1】The XRD spectra of the mercerising molecular sieve catalyst of preparation.Diffraction maximum is can be seen that from its spectrogram
It is coincide with the characteristic diffraction peak of mercerising molecular sieve.
Embodiment
【Embodiment 1】
A) alkaline silica sol (SiO is used240.0 weight %) it is silicon source, sodium aluminate (Al2O343.0 weight %, Na2O
35.0 weight %) it is silicon source, by 0.25 gram of sodium aluminate and synthesis state mercerising molecular sieve 48.1 grams of (weight-loss ratio 13.1%), sesbania powders
0.5616 gram well mixed, adds alkaline silica sol (SiO240.0 weight %) 4.5 grams.Silica alumina ratio SiO2/Al2O3=
28.5, alkali silicon mol ratio alkali/SiO2=0.094, mercerising molecular sieve content is prepared as 95.4 weight %, bonding by extruded moulding
The content of agent is 4.6 weight %, cross section is circular strip molecular sieve catalyst precursor I.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 90 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.
The XRD spectra of product is as shown in Figure 1.The compression strength of mercerising molecular sieve catalyst is 82N/cm.
【Embodiment 2】
Together【Embodiment 1】, simply：
A) will 59.6 grams of synthesis state mercerising molecular sieve, alkaline silica sol (SiO240.0 weight %) 4.5 grams, sesbania powder
1.05 grams, sodium aluminate (Al2O343.0 weight %, Na2The weight % of O 35.0) 0.25 gram of well mixed, silica alumina ratio SiO2/
Al2O3=28.5, alkali silicon mol ratio alkali/SiO2=0.094, it is 96.3 weights to prepare mercerising molecular sieve content by extruded moulding
Measure %, the strip molecular sieve catalyst precursor that the content of binding agent is 3.7 weight %, cross section is bunge bedstraw herb.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 60 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.Product
XRD spectra is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 82N/cm.
【Embodiment 3】
Together【Embodiment 1】, simply：
A) will 77.0 grams of synthesis state mercerising molecular sieve, alkaline silica sol (SiO240.0 weight %) 4.5 grams, sesbania powder
1.05 grams, sodium aluminate (Al2O343.0 weight %, Na2The weight % of O 35.0) 0.25 gram it is well mixed.Silica alumina ratio SiO2/
Al2O3=28.5, alkali silicon mol ratio alkali/SiO2=0.094, it is 97.1 weights to prepare mercerising molecular sieve content by extruded moulding
Measure %, the strip molecular sieve catalyst precursor that the content of binding agent is 2.9 weight %, cross section is bunge bedstraw herb.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 60 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.Product
XRD spectra is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 69N/cm.
【Embodiment 4】
Together【Embodiment 1】, simply：
A) will 59.6 grams of synthesis state mercerising molecular sieve, alkaline silica sol (SiO240.0 weight %) 4.5 grams, sesbania powder
1.05 grams, sodium aluminate (Al2O343.0 weight %, Na2The weight % of O 35.0) 0.17 gram it is well mixed.Silica alumina ratio SiO2/
Al2O3=41.9, alkali silicon mol ratio alkali/SiO2=0.064, it is 96.4 weights to prepare mercerising molecular sieve content by extruded moulding
Measure %, the strip molecular sieve catalyst precursor that the content of binding agent is 3.6 weight %, cross section is bunge bedstraw herb.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 60 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.Product
XRD spectra is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 76N/cm.
【Embodiment 5】
Together【Embodiment 1】, simply：
A) will 77.0 grams of synthesis state mercerising molecular sieve, smoke silica gel (SiO297.0 weight %) 2.0 grams, sesbania powder 1.5
Gram, sodium aluminate (Al2O343.0 weight %, Na2The weight % of O 35.0) 0.3 gram it is well mixed.Silica alumina ratio SiO2/Al2O3=
25.6, alkali silicon mol ratio alkali/SiO2=0.105, mercerising molecular sieve content is prepared as 96.8 weight %, bonding by extruded moulding
The strip molecular sieve catalyst precursor that the content of agent is 3.2 weight %, cross section is bunge bedstraw herb.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 60 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.Product
XRD spectra is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 71N/cm.
【Embodiment 6】
Together【Embodiment 1】, simply：
A) will 59.6 grams of synthesis state mercerising molecular sieve, alkaline silica sol (SiO240.0 weight %) 2.425 grams, smoke silicon
Glue (SiO297.0 weight %) 1.0 grams, 1.5 grams of sesbania powder, aluminum sulfate (Al2(SO4)3·18H2O, Al2O315.2 weight %)
0.868 gram, 0.135 gram of sodium hydroxide (the weight % of NaOH 96.0) it is well mixed.Silica alumina ratio SiO2/Al2O3=25, alkali silicon
Mol ratio alkali/SiO2=0.129, content of the mercerising molecular sieve content for 95.8 weight %, binding agent is prepared by extruded moulding
For 4.2 weight %, the strip molecular sieve catalyst precursor that cross section is bunge bedstraw herb.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 60 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.Product
XRD spectra is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 67N/cm.
【Embodiment 7】
Together【Embodiment 1】, simply：
A) will 59.6 grams of synthesis state mercerising molecular sieve, alkaline silica sol (SiO240.0 weight %) 4.5 grams, sesbania powder
1.05 grams, sodium aluminate (Al2O343.0 weight %, Na2The weight % of O 35.0) 0.25 gram, the sodium hydroxide (weights of NaOH 96.0
Measure %) 0.02 gram it is well mixed.Silica alumina ratio SiO2/Al2O3=28.5, alkali silicon mol ratio alkali/SiO2=0.115, by squeezing
Bar shaping prepares that mercerising molecular sieve content is 96.3 weight %, the content of binding agent is 3.7 weight %, cross section is bunge bedstraw herb
Strip molecular sieve catalyst precursor.
B) obtained mercerising molecular sieve catalyst precursor I in step a) is calcined 6 hours under 550 DEG C, air atmosphere
Mercerising molecular sieve catalyst precursor II.
C) by ammonium nitrate of the obtained mercerising molecular sieve catalyst precursor II at 60 DEG C with mass fraction 15% in step b)
Solution is contacted 3 times, 1 hour every time, and solid product is separated, dried, is calcined to obtain mercerising molecular sieve catalyst.Product
XRD spectra is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 86N/cm.
【Embodiment 8】
Together【Embodiment 1】, simply：
A) 0.05 gram of sodium hydroxide, silica alumina ratio SiO are added2/Al2O3=28.5, alkali silicon mol ratio alkali/SiO2=
0.146, prepare that mercerising molecular sieve content is 95.3 weight %, the content of binding agent is 4.7 weight %, transversal by extruded moulding
Face is circular strip molecular sieve catalyst precursor.
The XRD spectra of product is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 88N/cm.
【Embodiment 9】
Together【Embodiment 1】, simply：
A) sodium hydroxide is added, and controls silica alumina ratio SiO2/Al2O3=60, alkali silicon mol ratio alkali/SiO2=0.10,
Prepare that mercerising molecular sieve content is 96.9 weight %, the content of binding agent is 3.1 weight %, cross section is round by extruded moulding
The strip molecular sieve catalyst precursor of shape.
The XRD spectra of product is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 77N/cm.
【Embodiment 10】
Together【Embodiment 1】, simply：
A) silica alumina ratio SiO2/Al2O3=28.5, alkali silicon mol ratio alkali/SiO2=0.094, prepared by extruded moulding
Mercerising molecular sieve content is 97.1 weight %, the content of binding agent is 2.9 weight %, cross section is that circular strip molecular sieve is urged
Agent precursor.
The XRD spectra of product is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 82N/cm.
【Embodiment 11】
Together【Embodiment 1】, simply by the phosphorus of 30 grams of obtained mercerising molecular sieve catalyst in step c) and mass fraction 2%
300 grams of acid is contacted 3 hours at 30 DEG C, and solid product is separated, dry, is calcined, obtains the mercerising molecular sieve catalyst containing P.P content
For 0.1 weight %.The XRD spectra of product is similar to Fig. 1.The compression strength of mercerising molecular sieve catalyst is 80N/cm.
【Embodiment 12】
Together【Embodiment 1】, simply by the nitre of 30 grams of obtained mercerising molecular sieve catalyst in step c) and mass fraction 3%
Sour 450 grams of the lanthanum aqueous solution is contacted 2 hours at 75 DEG C, and solid product is separated, dry, is calcined, obtains the mercerising molecule containing lanthanum element
Sieve catalyst.It is 0.17 weight % to measure lanthanum content by ICP.The XRD spectra of product is similar to Fig. 1.Mercerising molecular sieve catalytic
The compression strength of agent is 85N/cm.
【Embodiment 13】
Together【Embodiment 11】, simply further by the nitric acid of 20 grams of the mercerising molecular sieve catalyst containing P and mass fraction 3%
300 grams of the lanthanum aqueous solution is contacted 2 hours at 95 DEG C, and solid product is separated, dry, is calcined, obtains the mercerising molecule containing P and lanthanum element
Sieve catalyst.It is 0.2 weight % to measure lanthanum content by ICP.The XRD spectra of product is similar to Fig. 1.Mercerising molecular sieve catalyst
Compression strength be 78N/cm.
【Comparative example 1】
Together【Embodiment 1】, Ludox is simply used as binding agent：
A) will 48.1 grams of synthesis state mercerising molecular sieve, alkaline silica sol (SiO240.0 weight %) 5.04 grams, sesbania powder
0.5616 gram is well mixed, by extruded moulding prepare mercerising molecular sieve content be 95.4 weight %, the content of binding agent be 4.6
Weight %, the strip molecular sieve catalyst precursor that cross section is bunge bedstraw herb.
The XRD spectra of product is as shown in Figure 1.The compression strength of mercerising molecular sieve catalyst is 32N/cm.
【Comparative example 2】
Together【Embodiment 1】, aluminum oxide is simply used as binding agent：
A) will 48.1 grams of synthesis state mercerising molecular sieve, aluminum oxide (Al2O396 weight %) 2.1 grams, 0.5616 gram of sesbania powder
It is well mixed, by extruded moulding prepare mercerising molecular sieve content be 95.4 weight %, the content of binding agent be 4.6 weight %,
Cross section is the strip molecular sieve catalyst precursor of bunge bedstraw herb.
The XRD spectra of product is as shown in Figure 1.The compression strength of mercerising molecular sieve catalyst is 41N/cm.
【Comparative example 3】
Method according to document CN102039152B prepares binder free mercerising molecular sieve catalyst：By 19 grams of white carbon,
10 grams of boehmite, 7 grams of mixed-formings of sodium acid carbonate, drying, are then placed in that inner bag bottom is aqueous and hexamethylene diamine mass ratio is
1：In the autoclave of 1 20 grams of mixed solution, catalyst and liquid water do not contact, and are taken out in 150 DEG C of crystallization 150h, drying,
400 DEG C of roastings 2h, 550 DEG C of roasting 3h obtain mercerising molecular sieve catalyst.
The XRD spectra of product is similar to Fig. 1, and the content of molecular sieve is 83.6 weight %, compression strength 35N/ in product
cm。
Claims (22)
1. a kind of mercerising molecular sieve catalyst, in terms of parts by weight, including following component：
A) 92~99 parts of mercerising molecular sieve；
B) 1~8 part of sial glue caking agent；
The step of sial glue caking agent is contacted by silicon source, silicon source and alkali obtains；Silicon source is with SiO2Meter, silicon source with
Al2O3Meter, alkali silicon mol ratio alkali/SiO2=0~0.3, silica alumina ratio SiO2/Al2O3=25~85.
2. mercerising molecular sieve catalyst according to claim 1, it is characterised in that alkali silicon mol ratio alkali/SiO2=0.02~
0.3。
3. mercerising molecular sieve catalyst according to claim 2, it is characterised in that alkali silicon mol ratio alkali/SiO2=0.03~
0.22。
4. mercerising molecular sieve catalyst according to claim 3, it is characterised in that alkali silicon mol ratio alkali/SiO2=0.04~
0.18。
5. mercerising molecular sieve catalyst according to claim 1, it is characterised in that silica alumina ratio SiO2/Al2O3=25~
60。
6. mercerising molecular sieve catalyst according to claim 1, it is characterised in that the silicon source is selected from Ludox, smoke silicon
Glue, waterglass or formula are Y4-nSiXnAt least one of silicon-containing compound；Formula Y4-nSiXnIn, n be 1~4 integer, Y
For alkenyl group, X is selected from Cl, methoxyl group OMe, ethyoxyl OEt or trimethylsiloxy group OSiMe3；
Source of aluminium is selected from least one of sodium aluminate, aluminium hydroxide, aluminum sulfate, aluminum nitrate or aluminium chloride；
The alkali is selected from quaternary ammonium base, using alkali metal or alkali earth metal as at least one of alkali of cation.
7. mercerising molecular sieve catalyst according to claim 6, it is characterised in that the formula Y4-nSiXnIn, Y be methyl,
Ethyl or propyl group；The quaternary ammonium base is selected from TMAH, tetraethyl ammonium hydroxide, TPAOH, the tetrabutyl
Ammonium hydroxide, N, N, N- front three adamantyl ammonium hydroxide or dimethyl diethyl ammonium hydroxide.
8. mercerising molecular sieve catalyst according to claim 1, it is characterised in that in terms of parts by weight, mercerising molecular sieve
Content is 95~99 parts, and the content of sial glue caking agent is 1~5 part.
9. mercerising molecular sieve catalyst according to claim 8, it is characterised in that in terms of parts by weight, mercerising molecular sieve
Content is 96~99 parts, and the content of sial glue caking agent is 1~4 part.
10. mercerising molecular sieve catalyst according to claim 1, it is characterised in that the silicon source is selected from Ludox or smoke
At least one of silica gel；The alkali is selected from least one of NaOH or KOH.
11. mercerising molecular sieve catalyst according to claim 1, it is characterised in that the mercerising molecular sieve catalyst resists
Compressive Strength be 60~120 newton/centimetre.
12. the mercerising molecular sieve catalyst according to claim 11, it is characterised in that the mercerising molecular sieve catalyst resists
Compressive Strength be 65~100 newton/centimetre.
13. the mercerising molecular sieve catalyst according to claim 12, it is characterised in that the mercerising molecular sieve catalyst resists
Compressive Strength be 65~90 newton/centimetre.
14. mercerising molecular sieve catalyst according to claim 1, it is characterised in that in terms of parts by weight, the catalyst bag
Include 0~0.5 part of phosphorus.
15. mercerising molecular sieve catalyst according to claim 1, it is characterised in that in terms of parts by weight, the catalyst bag
Include 0~0.5 part of thulium.
16. the mercerising molecular sieve catalyst according to claim 15, it is characterised in that the thulium be selected from yttrium,
At least one of lanthanum, cerium or neodymium.
17. a kind of preparation method of mercerising molecular sieve catalyst, comprises the following steps：
A) synthesis state mercerising molecular sieve is provided；
B) synthesis state mercerising molecular sieve, silicon source, silicon source and the alkali straight forming obtain the mercerising molecular sieve catalyst；
Wherein, the silicon source is Y selected from Ludox, smoke silica gel, waterglass or formula4-nSiXnSilicon-containing compound at least
It is a kind of；Formula Y4-nSiXnIn, n is 1~4 integer, and Y is alkenyl group, and X is selected from Cl, methoxyl group OMe, ethyoxyl OEt or three
Methyl siloxy OSiMe3；
Source of aluminium is selected from least one of sodium aluminate, aluminium hydroxide, aluminum sulfate, aluminum nitrate or aluminium chloride；
The alkali is selected from quaternary ammonium base, using alkali metal or alkali earth metal as at least one of alkali of cation；
Silicon source is with SiO2Meter, silicon source is with Al2O3Meter, alkali silicon mol ratio alkali/SiO2=0~0.3, silica alumina ratio SiO2/Al2O3=
25~85.
18. the preparation method of mercerising molecular sieve catalyst according to claim 17, it is characterised in that alkali silicon mol ratio alkali/
SiO2=0.02~0.3.
19. the preparation method of mercerising molecular sieve catalyst according to claim 18, it is characterised in that alkali silicon mol ratio alkali/
SiO2=0.03~0.22.
20. the preparation method of mercerising molecular sieve catalyst according to claim 19, it is characterised in that alkali silicon mol ratio alkali/
SiO2=0.04~0.18.
21. the preparation method of mercerising molecular sieve catalyst according to claim 17, it is characterised in that silica alumina ratio SiO2/
Al2O3=25~60.
22. the mercerising molecular sieve catalyst described in claim 1~16, or synthesized according to claim 17~21 methods described
Mercerising molecular sieve catalyst toluene disproportionation p-Diethylbenzene reaction in apply.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471691A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Beta/mordenite composite crystalline phase zeolite catalyst and preparation method and application thereof |
| CN115818662A (en) * | 2021-09-16 | 2023-03-21 | 中国科学院大连化学物理研究所 | Mordenite molecular sieve, and preparation method and application thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4169111A (en) * | 1978-02-02 | 1979-09-25 | Union Oil Company Of California | Manufacture of ethylbenzene |
-
2016
- 2016-06-18 CN CN201610440822.0A patent/CN107511166B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4169111A (en) * | 1978-02-02 | 1979-09-25 | Union Oil Company Of California | Manufacture of ethylbenzene |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114471691A (en) * | 2020-10-26 | 2022-05-13 | 中国石油化工股份有限公司 | Beta/mordenite composite crystalline phase zeolite catalyst and preparation method and application thereof |
| CN114471691B (en) * | 2020-10-26 | 2023-08-04 | 中国石油化工股份有限公司 | Beta/mercerized composite crystalline phase zeolite catalyst and preparation method and application thereof |
| CN115818662A (en) * | 2021-09-16 | 2023-03-21 | 中国科学院大连化学物理研究所 | Mordenite molecular sieve, and preparation method and application thereof |
| CN115818662B (en) * | 2021-09-16 | 2024-04-16 | 中国科学院大连化学物理研究所 | Mordenite molecular sieve, preparation method and application |
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