CN104959146A - Ethylbenzene dehydrogenation catalyst with low steam-to-oil ratio - Google Patents
Ethylbenzene dehydrogenation catalyst with low steam-to-oil ratio Download PDFInfo
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- CN104959146A CN104959146A CN201510278050.0A CN201510278050A CN104959146A CN 104959146 A CN104959146 A CN 104959146A CN 201510278050 A CN201510278050 A CN 201510278050A CN 104959146 A CN104959146 A CN 104959146A
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- ethylbenzene dehydrogenation
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- 239000003054 catalyst Substances 0.000 title claims abstract description 72
- YNQLUTRBYVCPMQ-UHFFFAOYSA-N Ethylbenzene Chemical compound CCC1=CC=CC=C1 YNQLUTRBYVCPMQ-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 238000006356 dehydrogenation reaction Methods 0.000 title claims abstract description 19
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000011734 sodium Substances 0.000 claims description 19
- 239000002994 raw material Substances 0.000 claims description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 239000001768 carboxy methyl cellulose Substances 0.000 claims description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 claims description 2
- 235000019812 sodium carboxymethyl cellulose Nutrition 0.000 claims description 2
- 229920001027 sodium carboxymethylcellulose Polymers 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 16
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 abstract 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 abstract 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 abstract 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 28
- 238000006243 chemical reaction Methods 0.000 description 13
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 9
- 238000002360 preparation method Methods 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 238000011156 evaluation Methods 0.000 description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- CYPPCCJJKNISFK-UHFFFAOYSA-J kaolinite Chemical compound [OH-].[OH-].[OH-].[OH-].[Al+3].[Al+3].[O-][Si](=O)O[Si]([O-])=O CYPPCCJJKNISFK-UHFFFAOYSA-J 0.000 description 7
- 229910052622 kaolinite Inorganic materials 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 5
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 5
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 4
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 4
- 235000018660 ammonium molybdate Nutrition 0.000 description 4
- 229940072033 potash Drugs 0.000 description 4
- 229910052700 potassium Inorganic materials 0.000 description 4
- 239000011591 potassium Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- 235000015320 potassium carbonate Nutrition 0.000 description 4
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000001125 extrusion Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 150000003839 salts Chemical group 0.000 description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 150000004649 carbonic acid derivatives Chemical class 0.000 description 2
- ZMZNLKYXLARXFY-UHFFFAOYSA-H cerium(3+);oxalate Chemical class [Ce+3].[Ce+3].[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O.[O-]C(=O)C([O-])=O ZMZNLKYXLARXFY-UHFFFAOYSA-H 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000008929 regeneration Effects 0.000 description 2
- 238000011069 regeneration method Methods 0.000 description 2
- 238000007086 side reaction Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 235000010344 sodium nitrate Nutrition 0.000 description 2
- 239000004317 sodium nitrate Substances 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 239000004793 Polystyrene Substances 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- NPYPAHLBTDXSSS-UHFFFAOYSA-N Potassium ion Chemical compound [K+] NPYPAHLBTDXSSS-UHFFFAOYSA-N 0.000 description 1
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 1
- DIGZKZLYDYJFHH-UHFFFAOYSA-N [K].[Mo].[Ce].[Fe] Chemical compound [K].[Mo].[Ce].[Fe] DIGZKZLYDYJFHH-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- VEFXTGTZJOWDOF-UHFFFAOYSA-N benzene;hydrate Chemical compound O.C1=CC=CC=C1 VEFXTGTZJOWDOF-UHFFFAOYSA-N 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 description 1
- 238000004898 kneading Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000004005 microsphere Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 150000002823 nitrates Chemical class 0.000 description 1
- 238000005453 pelletization Methods 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 229910001414 potassium ion Inorganic materials 0.000 description 1
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 description 1
- 229910001950 potassium oxide Inorganic materials 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
Abstract
The invention discloses an ethylbenzene dehydrogenation catalyst with low steam-to-oil ratio. The catalyst comprises, by weight, 60-85% of Fe2O3, 3-25% of K2O, 0.2-5% of MoO3, 3-20% of CeO2, and the balance of a Na compound or oxide. The ethylbenzene dehydrogenation catalyst with low steam-to-oil ratio has the advantages of high selectivity and activity under low steam-to-oil ratio conditions, and good stability.
Description
Technical field
The present invention relates to Alkylarylhydrocarbondehydrogenating dehydrogenating catalyst technical field, particularly a kind of ethylbenzene dehydrogenation catalyst with low water ratio.
Background technology
Ethylbenzene dehydrogenation is strong heat absorption, the reversible reaction increasing molecule, and industrial usual employing water vapour makes diluent to reduce ethylbenzene dividing potential drop, impels reaction to move to product direction.Water vapour has following effect in the reaction:
(1) heat reaction raw materials to temperature required, avoid ethylbenzene to be directly heated to higher temperature, suppress the generation of side reaction, improve selective;
(2) additional heat, in order to avoid lower the temperature due to endothermic heat of reaction;
(3) constantly got rid of the carbon deposit on catalyst by water gas reaction, make catalyst automatic regeneration.
But water vapour addition is subject to reaction system authorized pressure falls the restriction with these two factors of energy consumption, advanced ethylbenzene dehydrogenation technique is all pursued and is obtained higher styrene yield with the lower water ratio mass ratio of water vapour and ethylbenzene (in the charging), and adopting low water than operating is one of styrene device important measures of saving energy and reduce the cost.
The Fe-series catalyst that catalyst for preparing phenylethylene from dehydrogenation of ethylbenzene is take iron oxide as main active component, potassium oxide is main co-catalyst, potassium increases the activity of iron oxide with can becoming the order of magnitude, and can promote that carbon deposit is got rid of, made catalyst automatic regeneration by water gas reaction, at low water than under condition, due to the minimizing of steam vapour amount in reaction system, system reducing is caused to strengthen, many potassium ferrites in catalyst decompose under the effect of reducing atmosphere, potassium ion runs off from this compound, thus causes the decline of catalyst choice.If general catalyst carries out ethylbenzene dehydrogenation reaction under water ratio (water/ethylbenzene) is lower than 2.0 (weight), the selective variation of catalyst, although energy consumption reduces, material consumption but increases greatly.
To this, according to related documents report up to now, scientific research personnel had done a lot of trial, after published European patent 0177832 reports the magnesia adding 1.8-5.4% (weight) in the catalyst, catalyst can show stable premium properties at water under lower than 2.0 (weight), but the potassium content of this catalyst is higher; Add with kaliophilite Multiple salts forms as published United States Patent (USP) 4535067 reports a part of potassium in catalyst, but this catalyst 614 ± 2 DEG C time, conversion ratio is less than 65%, selective the highest by 93%, singly can not receive 60%, selective relatively low.
Therefore, while how reducing energy consumption in low water is than course of reaction, maintain or improve the selective of catalyst, reduce material consumption is the target that researcher makes great efforts always.
Summary of the invention
Based on catalyst for phenylethylene dehydrogenation in prior art at low water than poor selectivity under condition, active low problem, the object of the invention is to provide a kind of ethylbenzene dehydrogenation catalyst with low water ratio, this catalyst is used for ethylbenzene dehydrogenation reaction to prepare in styrene engineering and there is low water than good and feature that activity is high selective under condition, enhances productivity.
In order to overcome the deficiencies in the prior art, technical scheme provided by the invention is:
A kind of ethylbenzene dehydrogenation catalyst with low water ratio, is characterized in that comprising following component according to percentage by weight:
a)Fe
2O
3：60～85％；
b)K
2O：3～25％；
c)MoO
3：0.2～5％；
d)CeO
2：3～20％；
E) surplus is compound or the oxide of Na.
In preferred technical scheme, the Na of described catalyst is raw materials used is Na
2cO
3, NaHCO
3, Na
2sO
4, NaNO
3, at least one in NaOH or sodium carboxymethylcellulose.
In preferred technical scheme, with the oxide Na of Na
2o weight percent meter consumption is 0.05 ~ 10%.
In preferred technical scheme, with the oxide Na of Na
2o weight percent meter consumption is 0.1 ~ 5%.
The raw materials of the catalyst that the present invention relates to is: Fe
2o
3by iron oxide red (Fe
2o
3) and iron oxide yellow (Fe
2o
3h
2o) form, the proportioning of iron oxide red and iron oxide yellow is Fe
2o
3: Fe
2o
3h
2o=0.2 ~ 5: 1, are preferably 1 ~ 4.5: 1; K used adds with sylvite or hydroxide form; Ce used adds with oxide, hydroxide or decorations salt form; Mo used adds with its salt or oxide form.In preparation process of the present invention, except catalyst body composition, also should add perforating agent, perforating agent can be selected from graphite, polystyrene microsphere, carboxymethyl cellulose, and its addition is the 1-6% of total catalyst weight.
The preparation method of the catalyst that the present invention relates to is: to weigh needed raw material and perforating agent according to proportioning, deionized water is added after mixing, make the paste that there is viscosity, be applicable to extrusion, the particle that diameter is 3mm, length is 8 ~ 10mm is become through extrusion, pelletizing, then dry 4h under 60 ~ 120 DEG C of conditions, finally under 400 ~ 1000 DEG C of conditions, roasting 4h obtains finished catalyst.
Compared with prior art, advantage of the present invention is:
The present invention by adding the compound of Na in iron-potassium-cerium-molybdenum catalyst system, can the acid site of catalyst neutralisation, suppress the side reaction occurred at catalyst acid center, improve catalyst in selective than under condition of low water, and make catalyst have higher activity, greatly enhance productivity.
Detailed description of the invention
Below in conjunction with specific embodiment, such scheme is described further.Should be understood that these embodiments are not limited to for illustration of the present invention limit the scope of the invention.The implementation condition adopted in embodiment can do further adjustment according to the condition of concrete producer, and not marked implementation condition is generally the condition in normal experiment.
Embodiment 1
150.0 grams of iron oxide reds, 80.0 grams of iron oxide yellows, 53 grams of potash, 66 grams of cerous carbonates, 3 grams of ammonium molybdates, 2 grams of sodium carbonate, 10.6 carboxymethyl celluloses are stirred 1 hour in kneading machine, add deionized water, stir 0.5 hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 8 ~ 10 millimeters, put into baking oven, dry 2 hours for 80 DEG C, 120 DEG C are dried 2 hours, are then placed in muffle furnace, roasting 4 hours obtained catalyst under 900 DEG C of conditions.
Obtained catalyst carries out activity rating in isotherm formula fixed bed, detailed process is: deionized water and ethylbenzene are inputted preheating mixer through measuring pump respectively, preheating enters reactor after being mixed into gaseous state, reactor is the stainless steel tube of 1 cun, the interior catalyst that can fill 100ml particle diameter 3mm, reactor adopts the temperature needed for electric-heating-wire-heating to reaction, the reactant flowed out by reactor with gas chromatographic analysis its composition, and adopts the conversion ratio of following formulae discovery ethylbenzene and cinnamic selective after water condensation:
100ml catalyst is loaded reactor, normal pressure, liquid air speed 1.0 hours
-1, 620 DEG C, carry out activity rating under water ratio (weight) 1.5 condition, test result lists in table 1.
Embodiment 2
Other are identical with embodiment 1, and difference is that the raw material of Kaolinite Preparation of Catalyst is in example 2 285 grams of iron oxide reds, 110 grams of iron oxide yellows, 65 grams of potash, 78 grams of cerous nitrates, 12 grams of ammonium molybdates, 30 grams of sodium acid carbonates, 15 grams of carboxymethyl celluloses.According to the activity of the evaluation method evaluate catalysts of embodiment 1 after obtained catalyst, test result is in table 1.
Embodiment 3
Other are identical with embodiment 1, and difference is that the raw material of Kaolinite Preparation of Catalyst is in embodiment 3 150 grams of iron oxide reds, 100 grams of iron oxide yellows, 108 grams of potash, 56 grams of cerium oxalates, 5 grams of ammonium molybdates, 15 grams of sodium nitrate, 10 grams of carboxymethyl celluloses.According to the activity of the evaluation method evaluate catalysts of embodiment 1 after obtained catalyst, test result is in table 1.
Embodiment 4
Other are identical with embodiment 1, and difference is that the raw material of Kaolinite Preparation of Catalyst is in example 4 250 grams of iron oxide reds, 98 grams of iron oxide yellows, 46 grams of potash, 132 grams of cerium oxalates, 17 grams of ammonium molybdates, 50 grams of sodium sulphate, 15 grams of carboxymethyl celluloses.According to the activity of the evaluation method evaluate catalysts of embodiment 1 after obtained catalyst, test result is in table 1.
Consisting of of the various embodiments described above catalyst:
Comparative example 1
According to the method Kaolinite Preparation of Catalyst of embodiment 1, difference is not adding sodium carbonate.Obtained catalyst is according to the activity of the evaluation method evaluate catalysts of embodiment 1, and test result is in table 1.
Comparative example 2
According to the method Kaolinite Preparation of Catalyst of embodiment 2, difference is not adding sodium acid carbonate.Obtained catalyst is according to the activity of the evaluation method evaluate catalysts of embodiment 1, and test result is in table 1.
Comparative example 3
According to the method Kaolinite Preparation of Catalyst of embodiment 3, difference is not adding sodium nitrate.Obtained catalyst is according to the activity of the evaluation method evaluate catalysts of embodiment 1, and test result is in table 1.
Comparative example 4
According to the method Kaolinite Preparation of Catalyst of embodiment 4, difference is not adding sodium sulphate.Obtained catalyst is according to the activity of the evaluation method evaluate catalysts of embodiment 1, and test result is in table 1.
Above-mentioned comparative example obtains catalyst and consists of:
Table 1 catalytic dehydrogenation performance comparison
Table 2 catalyst stabilization performance compares
From the test result of above-described embodiment and comparative example relatively, catalyst for phenylethylene dehydrogenation of the present invention is with Fe
2o
3, K
2o, CeO
2, MoO
3for main component, by adding the compound of sodium, obtained catalyst than having high selectivity and activity under condition, and has good stability at low water.
Above-mentioned example, only for technical conceive of the present invention and feature are described, its object is to person skilled in the art can be understood content of the present invention and implement according to this, can not limit the scope of the invention with this.All equivalent transformations of doing according to Spirit Essence of the present invention or modification, all should be encompassed within protection scope of the present invention.
Claims (4)
1. an ethylbenzene dehydrogenation catalyst with low water ratio, is characterized in that comprising following component according to percentage by weight:
a)Fe
2O
3：60～85％；
b)K
2O：3～25％；
c)MoO
3：0.2～5％；
d)CeO
2：3～20％；
E) surplus is compound or the oxide of Na.
2. ethylbenzene dehydrogenation catalyst with low water ratio according to claim 1, is characterized in that: the Na of described catalyst is raw materials used is Na
2cO
3, NaHCO
3, Na
2sO
4, NaNO
3, at least one in NaOH or sodium carboxymethylcellulose.
3. ethylbenzene dehydrogenation catalyst with low water ratio according to claim 1, is characterized in that: with the oxide Na of Na
2o weight percent meter consumption is 0.05 ~ 10%.
4. ethylbenzene dehydrogenation catalyst with low water ratio according to claim 3, is characterized in that: with the oxide Na of Na
2o weight percent meter consumption is 0.1 ~ 5%.
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Family
ID=54213330
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927997A (en) * | 2017-04-24 | 2017-07-07 | 苏州拓瑞特新材料有限公司 | A kind of method of ethyl benzene dehydrogenation preparation of styrene under low-water ratio conditions |
| CN106955682A (en) * | 2017-04-24 | 2017-07-18 | 苏州拓瑞特新材料有限公司 | Ethylbenzene dehydrogenation catalyst with low water ratio |
| CN106994353A (en) * | 2017-04-24 | 2017-08-01 | 苏州拓瑞特新材料有限公司 | One kind is free of binding agent high intensity ethylbenzene dehydrogenation catalyst with low water ratio |
| CN106995360A (en) * | 2017-04-24 | 2017-08-01 | 苏州拓瑞特新材料有限公司 | The method of ethyl benzene dehydrogenation preparation of styrene under low-water ratio conditions |
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| US5510552A (en) * | 1993-05-04 | 1996-04-23 | The Dow Chemical Company | Process using a catalyst to dehydrogenate an alkyl aromatic compound |
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2015
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| US5510552A (en) * | 1993-05-04 | 1996-04-23 | The Dow Chemical Company | Process using a catalyst to dehydrogenate an alkyl aromatic compound |
| US6551958B1 (en) * | 1998-03-30 | 2003-04-22 | Basf Aktiengesellschaft | Catalyst for dehydrogenating ethyl benzene to produce styrene |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106927997A (en) * | 2017-04-24 | 2017-07-07 | 苏州拓瑞特新材料有限公司 | A kind of method of ethyl benzene dehydrogenation preparation of styrene under low-water ratio conditions |
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| CN106994353A (en) * | 2017-04-24 | 2017-08-01 | 苏州拓瑞特新材料有限公司 | One kind is free of binding agent high intensity ethylbenzene dehydrogenation catalyst with low water ratio |
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