CN108246341A - The preparation method and application method of a kind of hydrogenation dearomatization catalyst - Google Patents
The preparation method and application method of a kind of hydrogenation dearomatization catalyst Download PDFInfo
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- CN108246341A CN108246341A CN201710218255.9A CN201710218255A CN108246341A CN 108246341 A CN108246341 A CN 108246341A CN 201710218255 A CN201710218255 A CN 201710218255A CN 108246341 A CN108246341 A CN 108246341A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J29/00—Catalysts comprising molecular sieves
- B01J29/03—Catalysts comprising molecular sieves not having base-exchange properties
- B01J29/0308—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41
- B01J29/0316—Mesoporous materials not having base exchange properties, e.g. Si-MCM-41 containing iron group metals, noble metals or copper
- B01J29/0333—Iron group metals or copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/14—Phosphorus; Compounds thereof
- B01J27/185—Phosphorus; Compounds thereof with iron group metals or platinum group metals
- B01J27/1853—Phosphorus; Compounds thereof with iron group metals or platinum group metals with iron, cobalt or nickel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J29/041—Mesoporous materials having base exchange properties, e.g. Si/Al-MCM-41
- B01J29/042—Mesoporous materials having base exchange properties, e.g. Si/Al-MCM-41 containing iron group metals, noble metals or copper
- B01J29/044—Iron group metals or copper
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
- C07C5/02—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation
- C07C5/10—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by hydrogenation of aromatic six-membered rings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- 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
- B01J2229/18—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself
- B01J2229/186—After treatment, characterised by the effect to be obtained to introduce other elements into or onto the molecular sieve itself not in framework positions
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Abstract
The present invention proposes the preparation method and application method of a kind of hydrogenation dearomatization catalyst.The catalyst solves γ Al2O3The compound problem with transition metal phosphide.Its main innovation point is the carrier using bigger serface, first uploads active component phosphide.Then suitable acidity is uploaded with the method for atomic layer deposition.On the one hand, phosphorus source and γ Al are prevented2O3Being in direct contact for carrier, avoids AlPO4Formation.On the other hand, due to γ Al2O3Specific surface area it is smaller, when nickel phosphide is directly uploaded at its surface, generation bulky grain of reuniting, the synergistic effect that this combination both improves to the maximum extent can occur for nickel phosphide；There is very high activity and selectivity, and preparation method is simple and efficient, is of low cost in the reaction that the catalyst prepares decahydronaphthalene in fixed bed naphthalene saturated hydrogenation, this will make it have important practical significance in commercial Application.
Description
Technical field
The present invention proposes a kind of preparation method and application method of hydrogenation dearomatization catalyst.The catalyst solve γ-
Al2O3The compound problem with transition metal phosphide.The catalyst has in fixed bed naphthalene saturated hydrogenation prepares the reaction of decahydronaphthalene
Have very high activity and selectivity, and preparation method is simple and efficient, is of low cost, it is environmentally friendly, pollution-free, this will make its
There is important practical significance in commercial Application.
Background technology
With the economic development and improvement of people's living standards, high-quality crude reserves are increasingly exhausted.On the one hand, crude oil
Supply has apparent heaviness, the trend of in poor quality.On the other hand, it is the alleviation crude oil nervous situation that supply falls short of demand, coal tar,
The unconventional energy resource such as shale oil, oil sands bitumen are considered as the very promising oil supplement energy.However whether heavy, poor quality
Oil or coal tar, shale oil, oil sands bitumen, all containing a large amount of aromatic hydrocarbons, excessive aromatic hydrocarbons can not only reduce the flammability of fuel
Can and environmental pollution can be caused, deeply de-aromatizing has become an important topic of Clean Fuel Production.Existing de-
In aromatic hydrocarbons technology, hydrogenation aromatics-removing is most simply and effectively.In fused ring compound contained by coal tar and shale oil, naphthalene content is most
It is high.By the way that the decahydronaphthalene that hydrogen saturation obtains is added to can serve as the raw material of aviation kerosine.In addition, partial hydrogenation product naphthane is also coal
The best hydrogen supply dissolvent of charcoal direct liquefaction, while also be used as a variety of industrial solvents, such hydrogenation aromatics-removing can reach change give up into
Precious purpose.Therefore, the research to naphthalene plus hydrogen saturation and exploitation high activated catalyst, have important research significance.
According to the research of Oyama professors et al.（Journal of catalysis, 2003, 216:343-352）Showed
It crosses metal phosphide catalyst and more outstanding performance has been shown in the research of HDS, we guess that it satisfies in aromatic hydrogenation
Effect should be obtained in the application of sum.Playing the performance of transition metal phosphide not only needs high-performance and load cheap and easy to get
Body, and support acidity is also an important factor for influencing catalyst hydrogenation activity.Industrial hydrogenation aromatics-removing is mostly using biography at present
The aluminium oxide of system is as carrier.But compared with other carriers, upload phosphide in oxidation aluminium surface and always exist a technology bottle
Neck, i.e., traditional γ-Al2O3Catalyst of phosphatizing nickel is uploaded with poor stability.This is because γ-Al2O3Between P species
Strong interaction phosphide is inhibited to be formed.In addition, the specific surface area of aluminium oxide is smaller, the nickel phosphide uploaded easily is reunited
Form bulky grain.Therefore, in order to solve this problem, this patent selects larger MCM-41, MCM-48, the SBA- of specific surface area
15、SiO2One or more of as carrier, nickel phosphide active component is first uploaded to it, then passes through the side of atomic layer deposition
Method uploads it γ-Al2O3, make it have suitable acidity.And being added in preparation process can promote compared with little particulate nickel phosphide shape
Into dispersant ethylene glycol, ensure that active component nickel phosphide is as small as possible, and can uniformly be supported on carrier surface securely.And
It is compared with the corresponding aluminium base Al- carriers for uploading active component nickel phosphide, probes into its reactivity worth for adding hydrogen saturation to naphthalene.
Invention content
Based on background above, the present invention proposes a kind of for fixed bed hydrogenation dearomatization catalyst and preparation method thereof.This
Invention main innovation point is MCM-41, MCM-48, SBA-15, SiO using bigger serface2One or more of as carry
Body first uploads active component phosphide.Then suitable acidity is uploaded with the method for atomic layer deposition.Thus it is possible, on the one hand, it prevents
Phosphorus source and γ-Al2O3Being in direct contact for carrier, avoids AlPO4Formation.On the other hand, due to γ-Al2O3Specific surface area
It is smaller, when nickel phosphide is directly uploaded at its surface, nickel phosphide can occur it is serious reunite generation bulky grain, it is this combination and
Composite active center improves the synergistic effect of the two to the maximum extent；Innovative simultaneously uses the characteristics of being directed to the catalyst
The completely new preparation process of atomic layer deposition aluminium oxide；And the catalyst is made to have with using catalyst prepared by conventional method equal
Even higher catalytic activity, so as to obtain a kind of efficient hydrogenation dearomatization catalyst.
The specific technical solution of the present invention is as described below：
The preparation method of 1. a kind of hydrogenation dearomatization catalyst of scheme, it is characterised in that comprise the steps of：
（1）Under the conditions of being stirred at room temperature, ammonium dihydrogen phosphate is dissolved in deionized water, nickel nitrate is added in after its dissolving, continues
Stirring adds in ethylene glycol and continues stirring 1 hour after 30 minutes, it is molten that the nitric acid that mass concentration is 65% ~ 68% is added dropwise later
Liquid adjusts the pH value of solution in the range of 2 ~ 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring at least 30 minutes
In, it is later that it is at least 5 hours dry at 80 DEG C, it is then warming up to 120 DEG C again until drying；Then sample is put into Muffle
It is roasted 2 hours at 500 DEG C in stove, obtains presoma；Wherein the molar ratio of diammonium hydrogen phosphate and nickel nitrate is 0.5 ~ 2；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept at least 1 hour；With
After be cooled to room temperature, then switch to 1% O2/N2Passivating gas is passivated at least 2 hours and obtains sample A at room temperature；The wherein body of hydrogen
Product air speed is 3000 ~ 5000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydrogen is deposited on sample A surfaces at 150 ~ 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere at least 2 hours to get to required by aluminium oxide later
Hydrogenation dearomatization catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 ~ 10 atomic layers.
Preparation method of the scheme 2. according to scheme 1, which is characterized in that the carrier is MCM-41, Al-MCM-
41、MCM-48、SBA-15、SiO2One or more of.
Preparation method of the scheme 3. according to scheme 1, it is characterised in that the content of nickel accounts for the total matter of catalyst in catalyst
The 5% ~ 30% of amount.
A kind of 4. hydrogenation dearomatization catalyst of scheme, which is characterized in that 1 ~ 3 any one of them preparation method of operational version
It is made.
The application method of catalyst described in a kind of 5. scheme 4 of scheme, it is characterised in that the hydrogenation dearomatization catalyst is applied to
It needs to activate 1 hour under 250 ~ 350 DEG C of hydrogen atmospheres in fixed bed reactors, before use；Catalyst use temperature range is
250 ~350 ℃；Liquid charging stock volume space velocity is 1.0 ~ 6.0；Hydrogen to oil volume ratio is 500-1500.
Compared with existing known catalyst and preparation method thereof, the present invention has following significantly innovation：
（1）We make phosphide significantly be disperseed using the carrier of bigger serface first, reduce nickel phosphide and are carrying
The agglomeration in body surface face promotes the nickel phosphide generation compared with little particulate.In this way processing can make active component to greatest extent with
Short grained nickel phosphide state is uniform, is firmly supported on carrier surface.In addition, when precursor solution and load containing ethylene glycol
When body mixes, ethylene glycol is as a kind of strong dispersant, and dispersion performance ensures that whole system is uniform in preparation process, this process
It is more conducive to the interaction on active component and carrier surface.Then passed through using the silicone hydroxyl of trimethyl aluminium and carrier surface
The method of atomic layer deposition deposits aluminium hydroxide on the carrier surface to having uploaded active component, later fills products therefrom
Enter and calcined under an argon atmosphere in tube furnace to get to required hydrogenation dearomatization catalyst.Roasting under argon gas atmosphere
The crystalline phase that journey does not influence nickel phosphide changes, while avoids AlPO4Formation, and increase the acidity of carrier, and then
The absorption to reactant molecule naphthalene can be increased, so as to be effectively improved the hydrogenation activity of phosphatization nickel catalyst.
（2）The present invention employs completely new preparation process for the characteristics of catalyst, and using nickel phosphide and carrier acid
Property is collectively as the composite active center of catalyst.The method for using incipient wetness impregnation first, makes nickel phosphide be uploaded with smaller particless
On the larger carrier of specific surface area, ensure that nickel phosphide will not reunite substantially in this way.Atomic layer deposition is then carried out to it
Upload acidity, the acidity that carrier is suitble to can effectively adsorption reaction object molecule, so as to improve catalytic activity and stability.In this way
The two good synergistic effect in catalysis is reacted can be improved to the maximum extent, greatly improve the catalytic effect of catalyst.Through
It crosses lot of experimental data and shows that its effect is much better than the catalyst using nickel phosphide as single-activity center.And given activity
Component and the ratio of aluminium oxide can preferably consider the economy and effectiveness of catalyst.
（3）As described in specific technical solution, uploaded using the acidity that Atomic layer deposition method is uploaded with incipient wetness impregnation method
Synergistic effect between nickel phosphide active component.It being proved through experimental data, this combination not only reduces the cost in preparation process,
And aluminium oxide can be made preferably to be supported on carrier surface, avoid the formation of AlPO4, contribute to the promotion of catalyst activity.
Specific embodiment
For this patent is better described, following embodiment is now listed.Following embodiment is to make industry personnel more detailed
The thin understanding present invention or content according to the present invention make some nonessential modifications and adaptations, but illustrated embodiment is not
As limitation of the invention, it is contained in but does not include all claims.
Embodiment 1：
（1）Under the conditions of being stirred at room temperature, 5.88g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in MCM-41, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 0.5；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-1.
Embodiment 2：
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in MCM-41, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 1.25；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-2.
Embodiment 3：
（1）Under the conditions of being stirred at room temperature, 1.47g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in MCM-41, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 2.0；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-3.
Embodiment 4：
（1）Under the conditions of being stirred at room temperature, 5.88g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in MCM-48, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 0.5；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-4.
Embodiment 5：
（1）Under the conditions of being stirred at room temperature, 5.88g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in MCM-48, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 1.25；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-5.
Embodiment 6：
（1）Under the conditions of being stirred at room temperature, 5.88g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in MCM-48, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 2.0；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-6.
Embodiment 7：
（1）Under the conditions of being stirred at room temperature, 5.88g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in SBA-15, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 0.5；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-7.
Embodiment 8：
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in SBA-15, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 1.25；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-8.
Embodiment 9：
（1）Under the conditions of being stirred at room temperature, 1.47g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in SBA-15, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 2.0；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-9.
Embodiment 10：
（1）Under the conditions of being stirred at room temperature, 5.88g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
SiO2In, it is later that it is 8 hours dry at 80 DEG C, it is then warming up to 120 DEG C again until drying；Then sample is put into Muffle
It is roasted 2 hours at 500 DEG C in stove, obtains presoma；Wherein the load capacity of phosphide be 15 wt%, and diammonium hydrogen phosphate and
The molar ratio of nickel nitrate is 0.5；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-10.
Embodiment 11：
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
SiO2In, it is later that it is 8 hours dry at 80 DEG C, it is then warming up to 120 DEG C again until drying；Then sample is put into Muffle
It is roasted 2 hours at 500 DEG C in stove, obtains presoma；Wherein the load capacity of phosphide be 15 wt%, and diammonium hydrogen phosphate and
The molar ratio of nickel nitrate is 1.25；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-11.
Embodiment 12：
（1）Under the conditions of being stirred at room temperature, 1.47g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added in after its dissolving
7.4g nickel nitrates add in 2mL ethylene glycol and continue stirring 1 hour, mass concentration is added dropwise later after continuing stirring 30 minutes
For 68% salpeter solution, the pH value for adjusting solution is 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring 1 hour
SiO2In, it is later that it is 8 hours dry at 80 DEG C, it is then warming up to 120 DEG C again until drying；Then sample is put into Muffle
It is roasted 2 hours at 500 DEG C in stove, obtains presoma；Wherein the load capacity of phosphide be 15 wt%, and diammonium hydrogen phosphate and
The molar ratio of nickel nitrate is 2.0；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept for 2 hours；Then drop
It warms to room temperature, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；The volume space velocity of wherein hydrogen is
4000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydroxide is deposited on sample A surfaces at 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere 3 hours to get to required hydrogenation dearomatization by aluminium later
Catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 layers to get required catalyst, number Cat-12.
Comparative example 1：
Purpose is to be compared with embodiment 2, and the acidity uploaded with Atomic layer deposition method and Al- base loads are obtained by comparison
Influence of the body to catalyst activity.
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added after its dissolving
Enter 7.4g nickel nitrates, 2mL ethylene glycol is added in after continuing stirring 30 minutes and continue stirring 1 hour, it is dense that quality is added dropwise later
The salpeter solution for 68% is spent, the pH value for adjusting solution is 5, continues to be dipped into load using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in body Al-MCM-41, it is then warming up to 120 DEG C again until drying；Then by sample
It is put into Muffle furnace and is roasted 2 hours at 500 DEG C, obtain presoma；The wherein load capacity of nickel phosphide is 15 wt%, and phosphoric acid
Hydrogen diammonium and the molar ratio of nickel nitrate are 1.25.
（2）Presoma is put into tube furnace respectively, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and holding 2 is small
When；Room temperature then is cooled to, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；Wherein hydrogen
Volume space velocity is 4000 h-1To get required catalyst, number is respectively Cat-13.
Comparative example 2：
Purpose is to be compared with embodiment 5, and the acidity uploaded with Atomic layer deposition method and Al- base loads are obtained by comparison
Influence of the body to catalyst activity.
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added after its dissolving
Enter 7.4g nickel nitrates, 2mL ethylene glycol is added in after continuing stirring 30 minutes and continue stirring 1 hour, it is dense that quality is added dropwise later
The salpeter solution for 68% is spent, the pH value for adjusting solution is 5, continues to be dipped into load using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in body Al-MCM-48, it is then warming up to 120 DEG C again until drying；Then by sample
It is put into Muffle furnace and is roasted 2 hours at 500 DEG C, obtain presoma；The wherein load capacity of nickel phosphide is 15 wt%, and phosphoric acid
Hydrogen diammonium and the molar ratio of nickel nitrate are 1.25.
（2）Presoma is put into tube furnace respectively, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and holding 2 is small
When；Room temperature then is cooled to, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；Wherein hydrogen
Volume space velocity is 4000 h-1To get required catalyst, number is respectively Cat-14.
Comparative example 3：
Purpose is to be compared with embodiment 8, and the acidity uploaded with Atomic layer deposition method and Al- base loads are obtained by comparison
Influence of the body to catalyst activity.
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added after its dissolving
Enter 7.4g nickel nitrates, 2mL ethylene glycol is added in after continuing stirring 30 minutes and continue stirring 1 hour, it is dense that quality is added dropwise later
The salpeter solution for 68% is spent, the pH value for adjusting solution is 5, continues to be dipped into load using incipient wetness impregnation method after stirring 1 hour
It is later that it is 8 hours dry at 80 DEG C in body Al-SBA-15, it is then warming up to 120 DEG C again until drying；Then by sample
It is put into Muffle furnace and is roasted 2 hours at 500 DEG C, obtain presoma；The wherein load capacity of nickel phosphide is 15 wt%, and phosphoric acid
Hydrogen diammonium and the molar ratio of nickel nitrate are 1.25.
（2）Presoma is put into tube furnace respectively, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and holding 2 is small
When；Room temperature then is cooled to, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；Wherein hydrogen
Volume space velocity is 4000 h-1To get required catalyst, number is respectively Cat-15.
Comparative example 4：
Purpose is to compare with embodiment 11, by comparing the acid carrier containing aluminium and total silicon that show that atomic layer deposition method obtains
Influence of the type carrier to catalytic activity.
（1）Under the conditions of being stirred at room temperature, 2.35g ammonium dihydrogen phosphates are dissolved in 32mL deionized waters, are added after its dissolving
Enter 7.4g nickel nitrates, 2mL ethylene glycol is added in after continuing stirring 30 minutes and continue stirring 1 hour, it is dense that quality is added dropwise later
The salpeter solution for 68% is spent, the pH value for adjusting solution is 5, continues to be dipped into load using incipient wetness impregnation method after stirring 1 hour
Body SiO2In, it is later that it is 8 hours dry at 80 DEG C, it is then warming up to 120 DEG C again until drying；Then sample is put into horse
It is not roasted 2 hours at 500 DEG C in stove, obtains presoma；The wherein load capacity of nickel phosphide is 15 wt%, and diammonium hydrogen phosphate
Molar ratio with nickel nitrate is 1.25.
（2）Presoma is put into tube furnace respectively, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and holding 2 is small
When；Room temperature then is cooled to, then switches to 1% O2/N2Passivating gas is passivated 3 hours and obtains sample A at room temperature；Wherein hydrogen
Volume space velocity is 4000 h-1To get required catalyst, number is respectively Cat-16.
Comparative example 5：
Purpose is to be compared with embodiment 1, to catalyst activity whether obtaining the use of dispersant ethylene glycol by comparison
Influence.
Ethylene glycol is added without in preparation process, other steps are same as Example 1, and gained catalyst number is Cat-17.
Cat-1 to Cat-17 catalyst Activity evaluation.Evaluating catalyst condition：2.0 g of catalyst is packed into solid
Fixed bed reactor, catalyst activate 1 hour before under 250 DEG C of hydrogen atmospheres, and catalyst reaction temperatures are 270 DEG C, liquid
Raw material volume air speed is 1.0h-1, hydrogen to oil volume ratio 500.
Claims (5)
1. a kind of preparation method of hydrogenation dearomatization catalyst, it is characterised in that comprise the steps of：
（1）Under the conditions of being stirred at room temperature, ammonium dihydrogen phosphate is dissolved in deionized water, nickel nitrate is added in after its dissolving, continues
Stirring adds in ethylene glycol and continues stirring 1 hour after 30 minutes, it is molten that the nitric acid that mass concentration is 65% ~ 68% is added dropwise later
Liquid adjusts the pH value of solution in the range of 2 ~ 5, continues to be dipped into carrier using incipient wetness impregnation method after stirring at least 30 minutes
In, it is later that it is at least 5 hours dry at 80 DEG C, it is then warming up to 120 DEG C again until drying；Then sample is put into Muffle
It is roasted 2 hours at 500 DEG C in stove, obtains presoma；Wherein the molar ratio of diammonium hydrogen phosphate and nickel nitrate is 0.5 ~ 2；
（2）Presoma is put into tube furnace, under the hydrogen atmosphere of flowing, 650 DEG C is warming up to and is kept at least 1 hour；With
After be cooled to room temperature, then switch to 1% O2/N2Passivating gas is passivated at least 2 hours and obtains sample A at room temperature；The wherein body of hydrogen
Product air speed is 3000 ~ 5000 h-1；
（3）Using trimethyl aluminium as silicon source, using Atomic layer deposition method, hydrogen is deposited on sample A surfaces at 150 ~ 180 DEG C
Products therefrom is fitted into tube furnace 600 DEG C of calcinings under an argon atmosphere at least 2 hours to get to required by aluminium oxide later
Hydrogenation dearomatization catalyst；Wherein the deposition number of plies of aluminium hydroxide is 3 ~ 10 atomic layers.
2. preparation method according to claim 1, which is characterized in that the carrier for MCM-41, Al-MCM-41,
MCM-48、SBA-15、SiO2One or more of.
3. preparation method according to claim 1, it is characterised in that the content of nickel accounts for catalyst gross mass in catalyst
5%~30%。
4. a kind of hydrogenation dearomatization catalyst, which is characterized in that be made using claim 1 ~ 3 any one of them preparation method.
5. the application method of catalyst described in a kind of claim 4, it is characterised in that the hydrogenation dearomatization catalyst is applied to fix
In bed reactor, need to activate 1 hour under 250 ~ 350 DEG C of hydrogen atmospheres before use；Catalyst use temperature range is 250
~350 ℃；Liquid charging stock volume space velocity is 1.0 ~ 6.0；Hydrogen to oil volume ratio is 500-1500.
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