CN105665038B - Inactivate the renovation process of ethylbenzene catalyst - Google Patents
Inactivate the renovation process of ethylbenzene catalyst Download PDFInfo
- Publication number
- CN105665038B CN105665038B CN201410670581.XA CN201410670581A CN105665038B CN 105665038 B CN105665038 B CN 105665038B CN 201410670581 A CN201410670581 A CN 201410670581A CN 105665038 B CN105665038 B CN 105665038B
- Authority
- CN
- China
- Prior art keywords
- catalyst
- ethylbenzene
- hours
- ammonium
- inactivation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Catalysts (AREA)
Abstract
The present invention relates to a kind of renovation process for inactivating ethylbenzene catalyst, mainly solves the problems, such as that the existing inactivation ethylbenzene catalyst utilization of prior art is low, regeneration effect is poor.The present invention with 0.1~10.0wt% alkaline solutions by inactivation ethylbenzene catalyst by handling 2~10 hours, in a nitrogen atmosphere in 100~200 DEG C of drying high-temperature roasting in 2~10 hours, in air atmosphere 400~800 DEG C 2~10 hours, wherein, the solid-to-liquid ratio of the decaying catalyst and alkaline solution is (5~50)：1, treatment temperature is 50~120 DEG C of technical scheme, preferably solves the problem, the commercial Application available for ethylbenzene catalyst.
Description
Technical field
The present invention relates to a kind of renovation process for inactivating ethylbenzene catalyst.
Background technology
Ethylbenzene is important Organic Chemicals, is mainly used to produce styrene, and the downstream product of styrene such as engineering
Plastics, synthetic resin, synthetic rubber etc. are the important raw and processed materials of the industries such as building, automobile, electronics and commodity, and purposes is very wide
It is general.With the fast development of the related industry such as the implementation and building of national Major Engineering Projects, traffic and manufacture, drive
Ethylbenzene and the downstream rapid growth of the synthetic material market demand.
Most ethylbenzene is to be made by benzene and ethene through alkylated reaction in world wide, industrialized ethylbenzene synthesis
Technique mainly has traditional alchlor process, molecular sieve vapor phase method and a molecular sieve liquid phase method, main raw material be petrobenzene and
Ethene.At present, the ethylbenzene production capacity in China alreadys exceed 6,000,000 tons/year, leaps to as the big ethylbenzene producing country of the first in the world.
Usually, the single trip use cycle of ethylbenzene catalyst, catalytic activity can partly be recovered by generally going through in 1~2 year after regenerating, but by
In ineffective, still there are about 200 tons of ethylbenzene catalyst to be discarded because of loss of activity every year, these usual decaying catalysts need logical
The method processing of physics landfill is crossed, causes the certain wasting of resources and environmental pollution.
In recent years, the production and manufacture of the research institution of countries in the world or company to the catalyst of ethylbenzene carried out extensively and
In-depth study, and be constantly directed to driving Researches in ethylbenzene production technique by the raising of catalyst performance or the improvement of technology
Development.But be related to ethylbenzene catalyst regeneration document or patent it is less, hinder the general advance of Researches in ethylbenzene production technique.
Chinese patent ZL 03147999.5 discloses deactivated molecular sieve catalyst in a kind of benzene and ethylene alkylation
Decolouring renovation process, after deactivator is handled in the decolorising agent aqueous solution or distilled water, by 300~700 DEG C of air and/or
Oxygen atmosphere processing, not only appearance color is restored the catalyst after regeneration, and ethylbenzene selectivity and diethylbenzene conversion ratio can divide
98% and more than 99% are not reached.Document《The regeneration research of synthesizing ethyl benzene molecular sieve decaying catalyst》(Beijing Institute of Clothing Tech's journal,
2001, the 4th phase of volume 21) coked catalyst of synthesizing ethyl benzene is regenerated by external coke-burning regeneration method, and to new
Fresh and the including property of regenerated catalyst, carbon content, Acidity and acid amount are measured.
Document《Coke-burning regeneration of coked zeolite catalyst used in synthesis of ethylbenzene with dry gas of FCC is studied》(chemistry of fuel journal, 2004, volume 32
4th phase) using the ethylene synthase ethylbenzene coked catalyst in benzene and oil refinery dry gas as research object, to carbon deposit on coked catalyst
The situation of making charcoal under property and different temperatures is studied, and has investigated the acidity of catalyst, activity, crystalline phase, ratio before and after regenerating
The change of the performance such as surface and pore structure.
The renovation process for the inactivation ethylbenzene catalyst that above-mentioned patent or document are related to, the utilization rate of decaying catalyst and regeneration
The space further improved be present in effect.
The content of the invention
The technical problems to be solved by the invention are that the existing inactivation ethylbenzene catalyst utilization of prior art is low, revival
A kind of the problem of fruit difference, there is provided renovation process of new inactivation ethylbenzene catalyst.Catalyst after regeneration is used for benzene and ethene
Alkylated reaction, there is the characteristics of catalyst utilization height, favorable regeneration effect, high conversion of ethylene.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of regeneration for inactivating ethylbenzene catalyst
Method, in turn include the following steps：
A) catalyst inactivated in ethylbenzene reactor is drawn off, it is small with the processing 2~10 of 0.1~10.0wt% alkaline solutions
When；
B) catalyst after step a) processing is dried 2~10 hours in 100~200 DEG C in a nitrogen atmosphere；
C) step c) catalyst is calcined 2~10 hours in 400~800 DEG C in air atmosphere.
Wherein, the solid-to-liquid ratio of the catalyst in the step a) and alkaline solution is (5~50)：1, treatment temperature be 50~
120℃。
In above-mentioned technical proposal, the alkaline solution is sodium hydroxide solution, sodium carbonate liquor, sodium bicarbonate solution, hydrogen
At least one of potassium oxide solution, solution of potassium carbonate, potassium bicarbonate solution or ammonia spirit；The concentration of described alkaline solution
For 0.5~5.0wt%；The time of the alkaline solution processing is 4~8 hours；The solid-to-liquid ratio of the catalyst and alkaline solution
For (10~30)：1, treatment temperature is 60~90 DEG C；The drying temperature that the catalyst is placed in industrial oven is 120~180
DEG C, drying time is 4~8 hours；The sintering temperature that the catalyst is placed in high-temperature roasting furnace is 500~650 DEG C, during roasting
Between be 4~6 hours.The decaying catalyst after regeneration, reaction temperature be 320~380 DEG C, reaction pressure be 0.5~
1.5MPa, weight ethylene air speed are 0.2~0.8 hour-1, benzene ethylene mol ratio is 3~8, and regenerated catalyst connects with reaction raw materials
Touch generation ethylbenzene.
Ethylbenzene catalyst is inactivated in the inventive method after regeneration, before for reaction, is exchanged, dried using known ammonium
With roasting technology processing.For example, ammonium is exchanged for being handled under the conditions of 0~100 DEG C with the ammonium salt solution of weight concentration 1~20%
0.5~24 hour.The ammonium salt is selected from least one of ammonium nitrate, ammonium chloride, ammonium oxalate, ammonium sulfate or ammonium citrate.Institute
It is general also including filtering, water-washing step to state exchange.Drying steps are to be handled 1~10 hour at 100~140 DEG C.Calcination stepses
To be handled 1~10 hour at 500~550 DEG C.
In above-mentioned technical proposal, the decaying catalyst is 330~370 DEG C in reaction temperature after regeneration, reaction pressure
For 0.5~1.0MPa, weight ethylene air speed is 0.2~0.8 hour-1, benzene ethylene mol ratio is 4~5, regenerated catalyst with it is anti-
Answer raw material contact generation ethylbenzene.
In above-mentioned technical proposal, the solid-to-liquid ratio of the catalyst and alkaline solution is (15~25)：1, treatment temperature 70
~90 DEG C.
Catalyst recovery process used by the inventive method, catalyst are needed by alkaline solution before high-temperature roasting
Reason, on the one hand, by gentle basic treatment, the crystallinity of molecular sieve can maintained and keeping the same of framework of molecular sieve integrality
When, can be with partial impurities composition that Removal of catalyst contains；On the other hand, to produce part after alkaline solution is handled mesoporous
Duct, there is the quick diffusion for being easy to reactant and product.Catalyst after handling in this way removes carbon deposit through high-temperature roasting
Afterwards, the regenerated catalyst of gained is used to show excellent catalytic performance in the reaction of benzene and ethylene production ethylbenzene, with without
Alkaline solution is handled and the catalyst of roasting direct is compared, and conversion of ethylene can improve 2.6~3.4 percentage points, and ethylize choosing
Selecting property can improve 0.4~1.1 percentage point, and have the advantages of processing cost is low, achieve preferable technique effect.
Brief description of the drawings
Fig. 1 is【Embodiment 1】In regeneration after ethylbenzene catalyst XRD spectra.
XRD spectra measure is carried out on polycrystal X ray diffractometer, using Cu K alpha rays, scanning range 2Theta=5~
50°.It was found from XRD spectra, occur in 2Theta=7.9 °, 8.7 °, 14.7 °, 23.0 °, 23.9 °, 45.0 ° etc. obvious special
Diffraction maximum is levied, illustrates that the catalyst has typical MFI topological structures, and the crystallinity of catalyst is good.
Below by embodiment, the present invention is further elaborated, but the application of the present invention is not limited by these embodiments
System.
Embodiment
【Comparative example 1】
After the ethylbenzene catalyst inactivated in reactor is drawn off, by catalyst, 550 DEG C of high-temperature roastings 6 are small in air atmosphere
When, the ethylbenzene catalyst X regenerated is made.
【Comparative example 2】
After the ethylbenzene catalyst inactivated in reactor is drawn off, by catalyst, 600 DEG C of high-temperature roastings 4 are small in air atmosphere
When, the ethylbenzene catalyst Y regenerated is made.
【Embodiment 1】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 5 hours with 1.0wt% sodium hydroxide solution, its
In, the solid-to-liquid ratio of decaying catalyst and sodium hydroxide solution is 20：1st, treatment temperature is 80 DEG C；Then by catalyst in nitrogen gas
Dried 5 hours in 150 DEG C under atmosphere；Finally by catalyst 550 DEG C of high-temperature roastings 5 hours in air atmosphere, the second of regeneration is made
Benzene catalyst A.
【Embodiment 2】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 3 hours with 0.5wt% sodium bicarbonate solution, its
In, the solid-to-liquid ratio of decaying catalyst and sodium bicarbonate solution is 12：1st, treatment temperature is 60 DEG C；Then by catalyst in nitrogen gas
Dried 2 hours in 130 DEG C under atmosphere；Finally by catalyst 600 DEG C of high-temperature roastings 6 hours in air atmosphere, the second of regeneration is made
Benzene catalyst B.
【Embodiment 3】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 3 hours with 3.0wt% solution of potassium carbonate, wherein,
The solid-to-liquid ratio of decaying catalyst and solution of potassium carbonate is 25：1st, treatment temperature is 70 DEG C；Then by catalyst in a nitrogen atmosphere
Dried 6 hours in 160 DEG C；Finally by catalyst, 500 DEG C of high-temperature roastings 2 hours, the ethylbenzene that regeneration is made are urged in air atmosphere
Agent C.
【Embodiment 4】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 4 hours with 2.0wt% sodium hydroxide solution, its
In, the solid-to-liquid ratio of decaying catalyst and sodium hydroxide solution is 10：1st, treatment temperature is 60 DEG C；Then by catalyst in nitrogen gas
Dried 4 hours in 150 DEG C under atmosphere；Finally by catalyst 580 DEG C of high-temperature roastings 6 hours in air atmosphere, the second of regeneration is made
Benzene catalyst D.
【Embodiment 5】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 9 hours with 9.0wt% potassium hydroxide solution, its
In, the solid-to-liquid ratio of decaying catalyst and potassium hydroxide solution is 35：1st, treatment temperature is 55 DEG C；Then by catalyst in nitrogen gas
Dried 3 hours in 180 DEG C under atmosphere；Finally by catalyst 450 DEG C of high-temperature roastings 3 hours in air atmosphere, the second of regeneration is made
Benzene catalyst E.
【Embodiment 6】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 8 hours with 1.0wt% solution of potassium carbonate, wherein,
The solid-to-liquid ratio of decaying catalyst and solution of potassium carbonate is 40：1st, treatment temperature is 110 DEG C；Then by catalyst in a nitrogen atmosphere
Dried 8 hours in 110 DEG C；Finally by catalyst, 500 DEG C of high-temperature roastings 8 hours, the ethylbenzene that regeneration is made are urged in air atmosphere
Agent F.
【Embodiment 7】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 5 hours with 2.0wt% sodium carbonate liquor, wherein,
The solid-to-liquid ratio of decaying catalyst and sodium carbonate liquor is 35：1st, treatment temperature is 100 DEG C；Then by catalyst in a nitrogen atmosphere
Dried 7 hours in 190 DEG C；Finally by catalyst, 600 DEG C of high-temperature roastings 5 hours, the ethylbenzene that regeneration is made are urged in air atmosphere
Agent G.
【Embodiment 8】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 4 hours with 4.0wt% ammonia spirit, wherein, lose
The solid-to-liquid ratio of catalyst and ammonia spirit living is 48：1st, treatment temperature is 115 DEG C；Then by catalyst in a nitrogen atmosphere in
150 DEG C dry 10 hours；Finally by catalyst 750 DEG C of high-temperature roastings 9 hours in air atmosphere, the ethylbenzene catalysis of regeneration is made
Agent H.
【Embodiment 9】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 5 hours with 5.0wt% potassium hydroxide solution, its
In, the solid-to-liquid ratio of decaying catalyst and potassium hydroxide solution is 20：1st, treatment temperature is 80 DEG C；Then by catalyst in nitrogen gas
Dried 5 hours in 140 DEG C under atmosphere；Finally by catalyst 700 DEG C of high-temperature roastings 4 hours in air atmosphere, the second of regeneration is made
Benzene catalyst I.
【Embodiment 10】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 6 hours with 0.2wt% potassium bicarbonate solution, its
In, the solid-to-liquid ratio of decaying catalyst and potassium bicarbonate solution is 15：1st, treatment temperature is 90 DEG C；Then by catalyst in nitrogen gas
Dried 8 hours in 160 DEG C under atmosphere；Finally by catalyst 450 DEG C of high-temperature roastings 5 hours in air atmosphere, the second of regeneration is made
Benzene catalyst J.
【Embodiment 11】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 8 hours with 1.5wt% sodium hydroxide solution, its
In, the solid-to-liquid ratio of decaying catalyst and sodium hydroxide solution is 40：1st, treatment temperature is 60 DEG C；Then by catalyst in nitrogen gas
Dried 7 hours in 130 DEG C under atmosphere；Finally by catalyst 500 DEG C of high-temperature roastings 6 hours in air atmosphere, the second of regeneration is made
Benzene catalyst K.
【Embodiment 12】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 6 hours with 2.0wt% sodium carbonate liquor, wherein,
The solid-to-liquid ratio of decaying catalyst and sodium carbonate liquor is 25：1st, treatment temperature is 70 DEG C；Then by catalyst in a nitrogen atmosphere
Dried 5 hours in 150 DEG C；Finally by catalyst, 550 DEG C of high-temperature roastings 5 hours, the ethylbenzene that regeneration is made are urged in air atmosphere
Agent L.
【Embodiment 13】
After the ethylbenzene catalyst inactivated in reactor is drawn off, handled 4 hours with 2.5wt% sodium hydroxide solution, its
In, the solid-to-liquid ratio of decaying catalyst and sodium hydroxide solution is 30：1st, treatment temperature is 75 DEG C；Then by catalyst in nitrogen gas
Dried 4 hours in 160 DEG C under atmosphere；Finally by catalyst 600 DEG C of high-temperature roastings 8 hours in air atmosphere, the second of regeneration is made
Benzene catalyst M.
【Embodiment 14】
Regeneration ethylbenzene catalyst A~M provided by the invention, 4 are exchanged using 10.0wt% ammonium chloride solution at 60 DEG C
Hour, and be calcined 3 hours at 500~550 DEG C after being dried 5 hours in 110 DEG C.By the regeneration of the catalyst of gained and comparative example
Catalyst X, Y are alkylated reaction and contrast effect under conditions of benzene and ethene are raw material.Wherein, reaction temperature 360
DEG C, reaction pressure 0.9MPa, the mol ratio of benzene ethylene is 5.5, and weight ethylene air speed is 0.4 hour-1, the filling of catalyst
Measure as 5.0 grams, specific reaction result is shown in Table 1.
Table 1
| Ethylbenzene catalyst | Conversion of ethylene (%) | Ethylize selectivity (%) |
| A | 99.8 | 99.6 |
| B | 99.5 | 99.7 |
| C | 99.4 | 99.5 |
| D | 99.5 | 99.7 |
| E | 99.3 | 99.4 |
| F | 99.6 | 99.6 |
| G | 99.7 | 99.5 |
| H | 99.4 | 99.2 |
| I | 99.3 | 99.4 |
| J | 99.4 | 99.5 |
| K | 99.6 | 99.7 |
| L | 99.4 | 99.8 |
| M | 99.6 | 99.7 |
| X | 98.2 | 98.7 |
| Y | 98.1 | 98.8 |
Claims (10)
1. a kind of renovation process for inactivating ethylbenzene catalyst, in turn includes the following steps：
a）The catalyst inactivated in ethylbenzene reactor is drawn off, handled 2~10 hours with 0.1~10.0 wt% alkaline solutions；
b）Step a）Catalyst after processing is dried 2~10 hours in 100~200 DEG C in a nitrogen atmosphere；
c）By step b）Catalyst in air atmosphere in 400~800 DEG C be calcined 2~10 hours；
Wherein, the step a）In catalyst and the solid-to-liquid ratio of alkaline solution be（5~50）：1, treatment temperature is 50~120
℃。
2. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that the alkaline solution is hydrogen
Sodium hydroxide solution, sodium carbonate liquor, sodium bicarbonate solution, potassium hydroxide solution, solution of potassium carbonate, potassium bicarbonate solution or ammoniacal liquor
At least one of solution；The concentration of the alkaline solution is 0.5~5.0 wt%；The time of alkaline solution processing for 4~
8 hours.
3. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that inactivation ethylbenzene catalyst warp
After regeneration, before for reaction, ammonium exchange processing is carried out, with the ammonium salt solution of weight concentration 1~20% under the conditions of 0~100 DEG C
Processing 0.5~24 hour, the ammonium salt in ammonium nitrate, ammonium chloride, ammonium oxalate, ammonium sulfate or ammonium citrate at least one
Kind.
4. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that the catalyst and alkalescence
The solid-to-liquid ratio of solution is（10~30）：1, treatment temperature is 60~90 DEG C.
5. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that inactivation ethylbenzene catalyst warp
After regeneration, before for reaction, ammonium ion exchange or acid treatment are carried out.
6. the renovation process of inactivation ethylbenzene catalyst according to claim 5, it is characterised in that ammonium ion exchange weight
The ammonium salt solution of concentration 1~20% is handled 0.5~24 hour under the conditions of 0~100 DEG C；The ammonium salt is selected from ammonium nitrate, chlorination
At least one of ammonium, ammonium oxalate, ammonium sulfate or ammonium citrate.
7. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that the catalyst is placed in work
Drying temperature in industry baking oven is 120~180 DEG C, and drying time is 4~8 hours.
8. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that the catalyst is placed in height
Sintering temperature in warm roaster is 500~650 DEG C, and roasting time is 4~6 hours.
9. the renovation process of inactivation ethylbenzene catalyst according to claim 1, it is characterised in that the decaying catalyst warp
It it is 320~380 DEG C in reaction temperature after regeneration, reaction pressure is 0.5 ~ 1.5MPa, and weight ethylene air speed is 0.2 ~ 0.8 small
When-1, benzene ethylene mol ratio is 3 ~ 8, and regenerated catalyst contacts generation ethylbenzene with reaction raw materials.
10. the renovation process of inactivation ethylbenzene catalyst according to claim 8, it is characterised in that the decaying catalyst warp
It it is 330~370 DEG C in reaction temperature after regeneration, reaction pressure is 0.5 ~ 1.0MPa, and weight ethylene air speed is 0.2 ~ 0.8 small
When-1, benzene ethylene mol ratio is 4 ~ 5, and regenerated catalyst contacts generation ethylbenzene with reaction raw materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670581.XA CN105665038B (en) | 2014-11-20 | 2014-11-20 | Inactivate the renovation process of ethylbenzene catalyst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410670581.XA CN105665038B (en) | 2014-11-20 | 2014-11-20 | Inactivate the renovation process of ethylbenzene catalyst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105665038A CN105665038A (en) | 2016-06-15 |
| CN105665038B true CN105665038B (en) | 2018-04-06 |
Family
ID=56957652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410670581.XA Active CN105665038B (en) | 2014-11-20 | 2014-11-20 | Inactivate the renovation process of ethylbenzene catalyst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105665038B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108126744A (en) * | 2017-12-29 | 2018-06-08 | 镇江巨茂分子筛有限公司 | The regeneration technology of preparing ethylbenzene from dry gas catalyst |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131060A (en) * | 1995-11-27 | 1996-09-18 | 南开大学 | Catalyst for preparation of high purity para-diethylbenzene by using ethylbenzene disproportionation and its technology |
| CN1565739A (en) * | 2003-06-30 | 2005-01-19 | 中国石油化工股份有限公司 | Decolorizing and reactivating method of inactivated molecular sieve catalyzer in liquid-phase alkylating reaction of benzene and ethene |
| CN101829597A (en) * | 2009-03-10 | 2010-09-15 | 中国石油天然气股份有限公司 | Method for dearsenic regeneration of deactivated molecular sieve catalyst |
| CN102188994A (en) * | 2011-03-24 | 2011-09-21 | 欧颖 | Method for regenerating titanium silicalite catalyst |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7550403B2 (en) * | 2005-06-30 | 2009-06-23 | Uop Llc | Methods for recovering activity of molecular sieve catalysts |
-
2014
- 2014-11-20 CN CN201410670581.XA patent/CN105665038B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1131060A (en) * | 1995-11-27 | 1996-09-18 | 南开大学 | Catalyst for preparation of high purity para-diethylbenzene by using ethylbenzene disproportionation and its technology |
| CN1565739A (en) * | 2003-06-30 | 2005-01-19 | 中国石油化工股份有限公司 | Decolorizing and reactivating method of inactivated molecular sieve catalyzer in liquid-phase alkylating reaction of benzene and ethene |
| CN101829597A (en) * | 2009-03-10 | 2010-09-15 | 中国石油天然气股份有限公司 | Method for dearsenic regeneration of deactivated molecular sieve catalyst |
| CN102188994A (en) * | 2011-03-24 | 2011-09-21 | 欧颖 | Method for regenerating titanium silicalite catalyst |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105665038A (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103772134B (en) | For the method for methylbenzene methanol side chain alkylation preparation of styrene | |
| CN109833897B (en) | Catalyst for producing furfuryl alcohol, preparation method thereof and method for producing furfuryl alcohol | |
| CN107185594B (en) | Preparation method of Ni-Zn-K-Ru/MOF catalyst | |
| CN103785384B (en) | A kind of preparation method of catalyst for manufacturing olefin by low-carbon alkane dehydrogenation | |
| CN104549438B (en) | Framework aluminum supplementing method of molecular sieve based catalyst | |
| CN101543781B (en) | Catalyst for preparing propylene by oxidizing and dehydrogenating propane and preparation method thereof | |
| CN107715862B (en) | Anti-carbon deposition chromium-based catalyst for preparing propylene by propane dehydrogenation, preparation method and application | |
| CN102746096A (en) | Method for liquid phase transalkylation of polyethylbenzene and benzene | |
| CN105665038B (en) | Inactivate the renovation process of ethylbenzene catalyst | |
| CN105597842B (en) | The renovation process of ethylbenzene catalyst | |
| CN114073976B (en) | Modified ZSM-5 molecular sieve and preparation method and application thereof | |
| CN100467124C (en) | Catalyst for producing isobutene by cracking methyl tert-butyl ether | |
| CN108097201B (en) | Modified alumina and preparation method thereof | |
| CN110922291B (en) | Method for producing propylene by using bio-based ethanol and butanol mixed solution | |
| CN102372552A (en) | Catalytic pyrolysis method for producing ethene and propylene | |
| CN103664486A (en) | Method for preparing ethylbenzene from benzene and ethylene | |
| CN104230633A (en) | Liquid phase alkyl transfer method | |
| CN107715879A (en) | A kind of isocyanic acid decomposition method for preparing catalyst and made catalyst application method | |
| CN103721717A (en) | Catalyst capable of of improving quality of coal-based ethylene glycol product and preparation method of catalyst | |
| CN102746097A (en) | Method for production of ethylbenzene through liquid phase transalkylation of polyethylbenzene and benzene | |
| CN103664483B (en) | Benzene and ethanol synthesis produce the method for ethylbenzene | |
| CN105566050A (en) | Method for producing ethylbenzene from ethylene and benzene | |
| CN111013563A (en) | Spinel catalyst for preparing ethylene by ethane dehydrogenation under carbon dioxide atmosphere and preparation method thereof | |
| CN110038629A (en) | A kind of preparation method of rare earth metal Nd doping H-ZSM-34 molecular sieve | |
| CN104588009A (en) | Catalyst used for preparing olefin by dehydrating low carbon alkane, and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |