CN107899605A - It is a kind of to be used to catalyze and synthesize catalyst of tert-butylamine and preparation method thereof - Google Patents
It is a kind of to be used to catalyze and synthesize catalyst of tert-butylamine and preparation method thereof Download PDFInfo
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- CN107899605A CN107899605A CN201711171847.6A CN201711171847A CN107899605A CN 107899605 A CN107899605 A CN 107899605A CN 201711171847 A CN201711171847 A CN 201711171847A CN 107899605 A CN107899605 A CN 107899605A
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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
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
- B01J29/405—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively containing rare earth elements, titanium, zirconium, hafnium, zinc, cadmium, mercury, gallium, indium, thallium, tin or lead
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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
- B01J29/06—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof
- B01J29/40—Crystalline aluminosilicate zeolites; Isomorphous compounds thereof of the pentasil type, e.g. types ZSM-5, ZSM-8 or ZSM-11, as exemplified by patent documents US3702886, GB1334243 and US3709979, respectively
-
- 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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0205—Impregnation in several steps
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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
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/02—Impregnation, coating or precipitation
- B01J37/0201—Impregnation
- B01J37/0207—Pretreatment of the support
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C209/00—Preparation of compounds containing amino groups bound to a carbon skeleton
- C07C209/60—Preparation of compounds containing amino groups bound to a carbon skeleton by condensation or addition reactions, e.g. Mannich reaction, addition of ammonia or amines to alkenes or to alkynes or addition of compounds containing an active hydrogen atom to Schiff's bases, quinone imines, or aziranes
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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
Abstract
The present invention relates to a kind of catalyst for being used to catalyze and synthesize tert-butylamine and preparation method thereof, it is related to tert-butylamine synthesis technical field.The preparation method includes：H type Si-Al molecular sieves are mixed with binding agent, is granulated after shaping, obtains initial sample；The nitrate solution of initial sample and active element is subjected to incipient impregnation at least twice and is evaporated the solvent of the nitrate solution of addition, dry after last time incipient impregnation, roasting；Active element is rare earth element or transition metal.It is easy to operate controllable, it can be achieved that large-scale production, there is preferable economic benefit.The tert-butylamine catalyst as made from the above method, it effectively overcomes the defect such as reaction process high temperature, high pressure, reaction conversion ratio be low of synthesis tert-butylamine with preferable catalytic activity and preferable selectivity.
Description
Technical field
The present invention relates to tert-butylamine synthesis technical field, and more particularly to a kind of catalyst for being used to catalyze and synthesize tert-butylamine
And preparation method thereof.
Background technology
Tert-butylamine is a kind of important organic intermediate, is widely used in synthesis medicine, pesticide, dyestuff colouring agent, rubber and promotees
Into agent and chemical reagent, the rubber accelerator N- tert-butyl groups -2-[4-morpholinodithio time sulphur dominated especially as global environment-friendly novel
The primary raw material of acid amides (NS) is paid attention to by domestic industry.
Domestic tert-butylamine production uses traditional process route, is synthesized by isobutene through multistep, not only flow is complicated, equipment
It is huge, strong acid, highly basic are also used, makes serious corrosion of equipment, there are environmental pollution, energy loss are big, poor product quality etc. lacks
Point.Preferable route is directly to react synthesis tert-butylamine by alkene and ammonia, and synthetic route is as follows：
Wherein, isobutene direct aminatin method raw material sources are easy, and price is low, good reaction selectivity, are that one kind has development to dive
The atom economy cleaning procedure of power, has become tert-butylamine synthesis area research hottest point technology since the 1980s.Isobutene
Ammoniation process has the advantages that product purity is high, accessory substance is few, material toxicity is low, is limited without raw material sources, but in high temperature, high pressure
Under the conditions of reaction technology difficulty it is big.Only a small number of offshore companies grasp this technology (such as Germany BASF) at present.
U.S. Air Products and chemical Inc are reported with rare-earth metal La or H+ friendships in US 430725
The aluminosilicate changed, Y zeolites are reacted, conversion ratio 6.1%, can selectively reach at 270~310 DEG C of temperature as catalyst
To 100%.In DE19526502, EP0752410 is reported with the MCM-22 after multi step strategy, PSH-3, SSZ-25 for BASF AG
For catalyst, being reacted under 270 DEG C, 28Mpa, tert-butylamine yield is up to 20.5%, in DE 19,545 875, EP0778259,
In EP0785185, EP0786449, DE19530177, the catalytic performance made of β zeolites is preferable, is reacted under 270 DEG C, 28Mpa,
Tert-butylamine yield is up to 22.67%, although BASF process routes make tert-butylamine yield have a large increase, reaction pressure and anti-
Answer temperature higher, have high requirements to production equipment, and power consumption is big.
The content of the invention
It is an object of the invention to provide a kind of preparation method for the catalyst for being used to catalyze and synthesize tert-butylamine, it operates letter
List is controllable, it can be achieved that large-scale production, has preferable economic benefit.
It is an object of the invention to provide a kind of catalyst for being used to catalyze and synthesize tert-butylamine, and there is preferably catalysis to live for it
Property and preferable selectivity, effectively overcome reaction process high temperature, high pressure, the reaction conversion ratio of synthesis tert-butylamine are low etc. to lack
Fall into, effectively improve the production efficiency of tert-butylamine, effectively reduce production cost.
The present invention is solved its technical problem and is realized using following technical scheme.
The present invention proposes a kind of preparation method for the catalyst for being used to catalyze and synthesize tert-butylamine, it includes：
H- type Si-Al molecular sieves are mixed with binding agent, is granulated after shaping, obtains initial sample.
The nitrate solution of initial sample and active element is subjected to incipient impregnation at least twice and is evaporated per inferior body
The solvent of the nitrate solution added during product dipping, dry after last time incipient impregnation, roasting.
Active element is rare earth element or transition metal.
Binding agent is boehmite, any of activated alumina and polyvinyl alcohol.
The present invention proposes a kind of catalyst for being used to catalyze and synthesize tert-butylamine as made from above-mentioned preparation method.
Being used for of the embodiment of the present invention, which catalyzes and synthesizes the beneficial effect of the catalyst of tert-butylamine and preparation method thereof, is：
It is granulated, when making follow-up incipient impregnation, optimizes the absorptivity of the carrier after granulation, effectively improve isometric leaching
What rate of precision during stain, the uniformity for improving the nitrate load of active element and the nitrate for improving active element loaded
Amount.
Using incipient impregnation, second of drying of active element is effectively carried on initial sample, using at least twice, into
One step makes active element advantageously reduce the dosage of active element in the Load Balanced of tert-butylamine catalyst, cost-effective.And steam
The solvent of the nitrate solution of the active element added during each incipient impregnation is done, further active element is urged in tert-butylamine
The Load Balanced of agent, and make load of the active element in tert-butylamine catalyst more stable.
Obtained catalyst effectively overcomes reaction process high temperature, high pressure, the reaction conversion ratio of synthesis tert-butylamine are low etc. to lack
Fall into, effectively improve the production efficiency of tert-butylamine, effectively reduce production cost.
Embodiment
, below will be in the embodiment of the present invention to make the purpose, technical scheme and advantage of the embodiment of the present invention clearer
Technical solution be clearly and completely described.The person that is not specified actual conditions in embodiment, builds according to normal condition or manufacturer
The condition of view carries out.Reagents or instruments used without specified manufacturer, is the conventional production that can be obtained by commercially available purchase
Product.
Catalyst for being used to catalyze and synthesize tert-butylamine of the embodiment of the present invention and preparation method thereof is carried out specifically below
It is bright.
The present invention provides a kind of preparation method for the catalyst for being used to catalyze and synthesize tert-butylamine, it includes：
H- type Si-Al molecular sieves are mixed with binding agent, is granulated after shaping, obtains initial sample.By initial sample and activity member
The nitrate solution that the nitrate solution of element carries out incipient impregnation at least twice and added when being evaporated each incipient impregnation
Solvent, dry after last time incipient impregnation, baking operation is simple controllable, it can be achieved that large-scale production, has preferable
Economic benefit.Catalyst made from this method is used at the same time, it is with preferable catalytic activity and preferably selective, effective gram
Take the defect such as reaction process high temperature, high pressure, reaction conversion ratio be low of isobutene direct aminatin method synthesis tert-butylamine.
Specifically, first, H- type Si-Al molecular sieves are mixed with binding agent, is granulated after shaping, tert-butylamine catalyst is made
Initial sample.
Wherein, in preferred embodiments of the present invention, H- types Si-Al molecular sieve is HMCM molecular sieves, HZSM-5 molecular sieves,
Any of HZSM-11 molecular sieves and modenite, such as H- types Si-Al molecular sieve is HMCM molecular sieves, or H- types sial point
Son sieve is HZSM-11 molecular sieves etc..
Preferably, the silica alumina ratio of H- types Si-Al molecular sieve is 10-200:1.Such as the silica alumina ratio of H- type Si-Al molecular sieves is
10：1、20：1、30：1、50：1、70：1 or 100：1 etc..In this proportion, the amination activity of H- type Si-Al molecular sieves is good.
Preferably, the mass fraction of H- types Si-Al molecular sieve in the catalyst is 50-95%, such as H- type Si-Al molecular sieves
Mass fraction in the catalyst is 50%, 65%, 70%, 76%, 85%, 90%, 91% or 95% etc..
In preferred embodiments of the present invention, binding agent is boehmite, any of activated alumina and polyvinyl alcohol,
Such as binding agent is boehmite, or binding agent is polyvinyl alcohol etc..The selection of above-mentioned binding agent, its with subsequently at least twice etc.
Volume impregnation is worked in coordination, and active element introducted is more uniformly distributed and is not easily runed off, and is improved the active of catalyst and is stablized
Property.
In preferred embodiments of the present invention, the mass ratio of binding agent and H- type Si-Al molecular sieves is 0.1-1:1.
Specifically, shaping includes extruding, dry and roasting.Wherein, extruding herein refers in kneader, mediates
Extremely can be with the state of extrusion, extruded moulding.
Drying herein is preferably to dry 5-12h at 60-150 DEG C, drying effect is good by the way of drying.
Being roasted to herein roasts 4-6h at 200-800 DEG C, and the initial sample of catalyst is made.The initial sample performance
Stablize.
Then, the nitrate solution of initial sample and active element is subjected to incipient impregnation at least twice, and be evaporated every
The solvent of the nitrate solution added during secondary incipient impregnation, dry after last time incipient impregnation, roasting, is made and is used for
Catalyze and synthesize tert-butylamine catalyst.
Alternatively, after initial sample is first crushed, then it is granulated, its object is in incipient impregnation, make
The absorptivity of initial sample after granulation optimizes, and effectively improves rate of precision during incipient impregnation, improves the nitre of active element
The uniformity of hydrochlorate load and the amount of the nitrate load of raising active element.
In preferred embodiments of the present invention, active element is rare earth element or transition metal；For example, active element is
Any one in rare earth element Sm, Pm, Po, Pr, Sr and Eu etc., or active element is transition metal Fe, Co, Ni,
Any one in Ru and Pd etc..
Preferably, the mass percent that the nitrate of active element is accounted in catalyst is 0.5-10%.
To sum up, the choosing of the mass percent by the nitrate of the selection of active element and active element in the catalyst
Select, effectively it is modified be granulated after H- type Si-Al molecular sieves surface Acidity, make its absorption to reactant and product and
Desorption forms good matching, so as to reduce the temperature of catalytic reaction.
Wherein, the nitrate solution of active element can be configured voluntarily, can also directly be bought.It is of the invention preferably to implement
In example, configured using the metal salt of active element or active element is dissolved in salpeter solution, wherein, with the active element postponed
The concentration of nitrate be 0.1-5g/mL, more preferably 0.2-2g/mL, such as the concentration of the nitrate of active element is 0.1g/
ML, 0.2g/mL, 0.3g/mL, 0.4g/mL, 1g/mL, 1.6g/mL, 2g/mL, 3g/mL, 4g/mL or 5g/mL etc..It is preferred that nitric acid
Solution concentration is 0.5-5%.
Wherein, using incipient impregnation, effectively by active element introducted in initial sample, while using at least twice, make
Active element advantageously reduces the dosage of active element in the Load Balanced of tert-butylamine catalyst, cost-effective.
Preferably, each incipient impregnation carries out in 20-90 DEG C and is evaporated the nitrate solution of the active element of addition
Solvent, such as each incipient impregnation are carried out under the conditions of 20 DEG C, 30 DEG C, 40 DEG C, 50 DEG C, 70 DEG C or 90 DEG C etc., and in this
At a temperature of the solvent of the nitrate solution of active element that adds when being evaporated each incipient impregnation.Under the temperature conditionss, coordinate
Incipient impregnation, can effectively improve the activity of initial sample, promote it to load active element.It is evaporated the nitrate of addition
The solvent of solution can further improve Load Balanced and load capacity, be convenient for incipient impregnation next time, be conducive to subtract
The dosage of few active component, it is cost-effective.
Each incipient impregnation carries out in rotatable heater, easy to heating operation.
Preferably, dried in last time incipient impregnation and after being evaporated the solvent of the nitrate solution of addition, roasting.
Wherein, drying described herein is to dry 12h at 60-150 DEG C；Preferably, it is described herein to be roasted to 200-800 DEG C
Lower roasting 4-10h.Effectively improve the stability and catalytic activity of tert-butylamine catalyst.
The tert-butylamine provided by the invention as made from the above-mentioned preparation method for the catalyst for catalyzing and synthesizing tert-butylamine is urged
Agent, its with preferable catalytic activity and preferably selectivity, effectively overcome synthesis tert-butylamine reaction process high temperature,
The defects such as high pressure, reaction conversion ratio be low.Application in above-mentioned catalyst synthesizes tert-butylamine in isobutene direct aminatin method, effectively
The production efficiency of tert-butylamine is improved, it is low simultaneously for reaction temperature and pressure requirements, effectively reduce production cost.
The feature and performance of the present invention are described in further detail with reference to embodiments.
Embodiment 1
A kind of catalyst for being used to catalyze and synthesize tert-butylamine, it is made by following methods：
The aqueous solution of HZSM5 molecular sieves and polyvinyl alcohol is sufficiently mixed in kneader, then after extruded moulding,
6h is dried at 120 DEG C to be dried, and is then roasted 6h at 600 DEG C, is obtained initial sample.Wherein, HZSM5 molecular sieves and polyvinyl alcohol
Mass ratio be 1:0.2.
Initial sample is crushed, is granulated.10g initial samples after granulation are placed in rotatable heater, in 80 DEG C of perseverances
The solvent of multiple incipient impregnation and the cerous nitrate solution for being evaporated addition is carried out under conditions of temperature with cerous nitrate solution.
After last time incipient impregnation, 12h is then dried at 120 DEG C, 8h is roasted at 600 DEG C, is used for
Catalyze and synthesize the catalyst of tert-butylamine.Wherein, in the catalyst for catalyzing and synthesizing tert-butylamine, the cerous nitrate contained is 0.8g.
Wherein, cerous nitrate solution is that cerous nitrate is dissolved in gained in salpeter solution, wherein, the concentration of cerous nitrate is 0.5g/
ML, salpeter solution concentration are 3%.
Embodiment 2
A kind of catalyst for being used to catalyze and synthesize tert-butylamine, it is made by following methods：
10g initial samples after the granulation that embodiment 1 is provided are placed in rotatable heater, in 80 DEG C of constant temperature
Lower and strontium nitrate solution carries out the solvent of multiple incipient impregnation and the cerous nitrate solution for being evaporated addition.
After last time incipient impregnation, 12h is then dried at 120 DEG C, 8h is roasted at 600 DEG C, is used for
Catalyze and synthesize the catalyst of tert-butylamine.Wherein, in the catalyst for catalyzing and synthesizing tert-butylamine, the strontium nitrate contained is 0.8g.
Wherein, strontium nitrate solution is that strontium nitrate is dissolved in gained in salpeter solution, wherein, the concentration of strontium nitrate is 0.5g/
ML, salpeter solution concentration are 3%.
Embodiment 3
A kind of catalyst for being used to catalyze and synthesize tert-butylamine, it is made by following methods：
HZSM5 molecular sieves, activated alumina and water are sufficiently mixed in kneader, then after extruded moulding, 80
6h is dried at DEG C to be dried, and is then roasted 6h at 400 DEG C, is obtained initial sample.Wherein, HZSM5 molecular sieves and activated alumina
Mass ratio be 1:0.2.
Initial sample is crushed, is granulated.10g initial samples after granulation are placed in rotatable heater, in 40 DEG C
The solvent of multiple incipient impregnation and the cerous nitrate solution for being evaporated addition is carried out under constant temperature with cerous nitrate solution.
After last time incipient impregnation, 12h is then dried at 80 DEG C, 8h is roasted at 400 DEG C, obtain being used to urge
It is combined to tert-butylamine.Wherein, for catalyzing and synthesizing in tert-butylamine, the cerous nitrate contained is 0.8g.
Wherein, cerous nitrate solution is that cerous nitrate is dissolved in gained in salpeter solution, wherein, the concentration of cerous nitrate is 0.5g/
ML, salpeter solution concentration are 3%.
Embodiment 4
A kind of catalyst for being used to catalyze and synthesize tert-butylamine, it is made by following methods：
10g initial samples after the granulation that embodiment 3 is provided are placed in rotatable heater, under conditions of 40 DEG C with
Strontium nitrate solution carries out the solvent of multiple incipient impregnation and the cerous nitrate solution for being evaporated addition.
After last time incipient impregnation, 12h is then dried at 80 DEG C, 8h is roasted at 600 DEG C, obtain being used to urge
It is combined to the catalyst of tert-butylamine.Wherein, in the catalyst for catalyzing and synthesizing tert-butylamine, the strontium nitrate contained is 0.8g.
Wherein, strontium nitrate solution is that strontium nitrate is dissolved in gained in salpeter solution, wherein, the concentration of nitre strontium nitrate is
0.5g/mL, salpeter solution concentration are 3%.
Test example
The catalyst obtained to above-described embodiment 1-4, carries out performance evaluation.
Catalytic performance of the above-mentioned catalyst in isobutene directly synthesizes tert-butylamine reaction is evaluated with tert-butylamine reaction unit.
Wherein, the temperature of reaction is 260 DEG C, and reaction pressure 9MPa, the results are shown in Table 1 for it：
1 result of the test of table
Can be obtained according to table 1, tert-butylamine catalyst provided by the invention in isobutene direct ammonification synthesis tert-butylamine kind, compared with
In the case of the temperature of low reaction and relatively low reaction pressure, conversion ratio is more than 14%, selectivity 97%.Isobutene turns
Rate and selectivity are higher, the defect such as effectively overcome existing reaction process high temperature, high pressure, reaction conversion ratio low.
Can in conclusion the preparation method of the catalyst for catalyzing and synthesizing tert-butylamine of the embodiment of the present invention is easy to operate
Control has preferable economic benefit, it can be achieved that large-scale production.Catalyst made from this method, there is preferably catalysis to live for it
Property and preferable selectivity, effectively overcome reaction process high temperature, high pressure, the reaction conversion ratio of synthesis tert-butylamine are low etc. to lack
Fall into.When the catalyst is applied in isobutene direct aminatin method synthesis tert-butylamine, the production efficiency of tert-butylamine can be effectively improved, together
Shi Youxiao reduces production cost.
Embodiments described above is part of the embodiment of the present invention, instead of all the embodiments.The reality of the present invention
The detailed description for applying example is not intended to limit the scope of claimed invention, but is merely representative of the selected implementation of the present invention
Example.Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
Every other embodiment, belongs to the scope of protection of the invention.
Claims (10)
- A kind of 1. preparation method for the catalyst for being used to catalyze and synthesize tert-butylamine, it is characterised in that including：H- type Si-Al molecular sieves are mixed with binding agent, is granulated after shaping, obtains initial sample；The nitrate solution of the initial sample and active element is subjected to incipient impregnation at least twice and is evaporated per inferior body The solvent of the nitrate solution added during product dipping, dry after last time incipient impregnation, roasting；The active element is rare earth element or transition metal；The binding agent is boehmite, any of activated alumina and polyvinyl alcohol.
- 2. preparation method according to claim 1, it is characterised in that each incipient impregnation is in 20-90 DEG C of progress.
- 3. preparation method according to claim 1, it is characterised in that the binding agent and the H- types Si-Al molecular sieve Mass ratio is 0.1-1:1.
- 4. preparation method according to claim 1, it is characterised in that the H- types Si-Al molecular sieve is HMCM molecular sieves, HZSM-5 molecular sieves, any of HZSM-11 molecular sieves and modenite.
- 5. preparation method according to claim 1, it is characterised in that the silica alumina ratio of the H- types Si-Al molecular sieve is 10- 200:1。
- 6. preparation method according to claim 1, it is characterised in that the H- types Si-Al molecular sieve is in the catalyst Mass fraction be 50-95%.
- 7. preparation method according to claim 1, it is characterised in thatThe mass percent of the nitrate of the active element in the catalyst is 0.5-10%,Preferably, the concentration of the nitrate of active element is 0.1-5g/mL in the nitrate solution of active element, more preferably 0.2-2g/mL。
- 8. preparation method according to claim 1, it is characterised in that first drying is to dry 5-12h at 60-150 DEG C；Preferably, it is roasted to for the first time and roasts 4-6h at 200-800 DEG C.
- 9. preparation method according to claim 1, it is characterised in that it is to dry 12h at 60-150 DEG C that second dry；Preferably, it is roasted to for the second time at 200-800 DEG C and roasts 4-10h.
- 10. it is used for the catalyst for catalyzing and synthesizing tert-butylamine made from the preparation method as described in claim 1-9 any one.
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| CN116060101A (en) * | 2021-10-31 | 2023-05-05 | 中国石油化工股份有限公司 | Catalyst for synthesizing diphenylamine, preparation method and application thereof |
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| CN112094196A (en) * | 2020-09-29 | 2020-12-18 | 浙江皇马科技股份有限公司 | Method for preparing tert-butylamine by direct amination catalysis of isobutene |
| CN114436853A (en) * | 2020-10-31 | 2022-05-06 | 中国石油化工股份有限公司 | Method for preparing tert-butylamine by amination of isobutene |
| CN116060101A (en) * | 2021-10-31 | 2023-05-05 | 中国石油化工股份有限公司 | Catalyst for synthesizing diphenylamine, preparation method and application thereof |
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Application publication date: 20180413 |