CN105478130A - Catalyst for ethylbenzene dehydrogenation for preparing styrene - Google Patents
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Abstract
The invention relates to a catalyst for ethylbenzene dehydrogenation for preparing styrene and mainly solves the problem in the prior art that a catalyst is high in rare earth content and the yield of styrene is low. The problem is better solved by adopting a technical scheme that the catalyst for ethylbenzene dehydrogenation for preparing styrene comprises the following active components in percentage by weight: a) 55-85% of Fe2O3; b) 5-30% of K2O; c) 0.5-5% of MoO3; d) 0.1-3% of an oxide of at least one of Mg, Ca, Sr and Ba; e) 0.1-10% of an oxide of at least one of La and Ce; and f) 0.1-3% of an oxide of at least one of Y, Zr and Hf. The catalyst is used for industrial production of styrene.
Description
Technical field
The present invention relates to a kind of low content of rare earth high stability catalyst for ethyl benzene dehydrogenation preparation of styrene.
Background technology
The current industrial cinnamic overwhelming majority is realized by the direct catalytic thermal dehydrogenation of ethylbenzene.The basic composition of used catalyst comprises major catalyst, co-catalyst and pore-foaming agent, reinforcing agent etc.Report about catalyst generally can be divided into two large classes, and a class is the early stage Fe-K series catalysts containing Cr, as oneself disclosed US Patent No. 4467046, US4684619 and European patent EP 0195252A2 etc.Although the activity of such catalyst and stability are better, owing to more or less there is the oxide of Cr in composition, can cause certain environmental pollution in the thus preparation of catalyst, operation and dead catalyst processing procedure, oneself is eliminated.The another kind of Fe-K-Ce-Mo series being early eighties and succeeding in developing, as oneself disclosed US Patent No. 5190906, US4804799, world patent W009839278A1 etc.This type of catalyst Ce, Mo substitute Cr, make catalyst on the basis maintaining original stability, active comparatively the former is also improved, and is extensively adopted by countries in the world phenylethylene catalyst manufacturer, in order to maintain stability and the activity of catalyst, its content of rare earth is substantially more than 10%.Since this century, because the rare earth that is day by day deficient and various countries of rare earth resources is strategic, rare earth rapid rise of price, even there is supply shortage phenomenon in market.What Chinese patent CN115006A, CN100531905C invented is take Fe-K-Ce-Mo as principal component, add the catalyst of the second rare earth element again, improve the activity of catalyst and selective, catalyst have also been obtained improvement from power of regeneration, it invents the La system rare earth oxide contained.
But prior art Rare Earths in Catalyst tenor is high, and styrene yield is low.
Summary of the invention
One of technical problem to be solved by this invention is that to there is catalyst in conventional art high containing rare earth, and the problem that styrene yield is low, provides a kind of catalyst for ethyl benzene dehydrogenation preparation of styrene newly.This catalyst has the advantages that rare-earth usage is low, styrene yield is high.
Two of technical problem to be solved by this invention is preparation methods of catalyst described in one of technical problem.
Three of technical problem to be solved by this invention is catalyst described in one of technical problem prepares in alkenyl arene application at alkyl aromatics dehydrogenation.
For one of solving the problems of the technologies described above, technical scheme of the present invention is as follows:
For the catalyst of ethyl benzene dehydrogenation preparation of styrene, comprise following active constituent by weight percentage:
A) Fe of 55 ~ 85%
2o
3;
B) K of 5 ~ 30%
2o;
C) MoO of 0.5 ~ 5%
3;
D) oxide of Mg, Ca, Sr, Ba at least one of 0.1 ~ 3%;
E) 0.1 ~ 10% oxide being selected from least one in La, Ce;
F) 0.1 ~ 3% oxide being selected from least one in Y, Zr, Hf.Comprise the oxide of Zr and Hf preferably at least simultaneously; Or comprise the oxide of Y and Zr simultaneously; Preferably comprise the oxide of Y, Zr and Hf simultaneously.
In technique scheme, be selected from the oxide of at least one in La, Ce by weight and be preferably 1 ~ 10%, more preferably scope is 1 ~ 3%.
In technique scheme, the oxide consumption being selected from least one in Y, Zr, Hf is by weight percentage preferably 0.1 ~ 4%, and more preferably 1 ~ 3%.
In technique scheme, the oxide consumption preferable range being selected from least one in Mg, Ca, Sr, Ba is by weight percentage 0.1 ~ 3%, and more preferably scope is 0.5 ~ 2%.
In technique scheme, the oxide being selected from least one in La, Ce is by weight percentage 2 ~ 10 with the ratio preferable range of the oxide consumption being selected from least one in Y, Zr, Hf.
For solve the problems of the technologies described above two, technical scheme of the present invention is as follows: for the preparation method of the catalyst of ethyl benzene dehydrogenation preparation of styrene described in any one of the technical scheme of one of above-mentioned technical problem, comprise the following steps: the raw material of described component or described component, perforating agent are mixed with water, mediate, extrusion, drying, pelletizing, roasting.
In technique scheme, take catalyst as benchmark, perforating agent consumption is preferably 1 ~ 10% by weight percentage.
In technique scheme, described perforating agent is at least one in CMC, graphite or polystyrene sphere preferably.
In technique scheme, Fe
2o
3the form that adds be not particularly limited, such as the form of iron oxide red and/or iron oxide yellow can add, but preferably add with the form of iron oxide red and iron oxide yellow, more preferably iron oxide yellow: the weight ratio of iron oxide red is for being greater than 0 and being less than 5 simultaneously.
In technique scheme, the temperature of roasting is preferably 600 ~ 1000 DEG C more preferably 750 ~ 950 DEG C.
In technique scheme, the time of roasting is preferably 1 ~ 8 hour.
For solve the problems of the technologies described above three, technical scheme of the present invention is as follows: the application in alkenyl arene prepared by catalyst described in any one of the technical scheme of one of above-mentioned technical problem at alkyl aromatics dehydrogenation.Such as ethyl benzene dehydrogenation preparation of styrene, diethylbenzene Oxidative Dehydrogenation divinylbenzene, methyl-ethyl benzene Oxidative Dehydrogenation methyl styrene.
As method for preparing catalyst of the present invention detailed description of the invention such as but not limited to:
After the raw material of Fe, K, Mo of weighing by proportioning and other co-catalyst component that need add or component, perforating agent Homogeneous phase mixing, add appropriate deionized water, make toughness, be applicable to the paste of extrusion, become diameter to be 3 millimeters through extrusion, pelletizing, grow the particle of 5 ~ 10 millimeters, in 40 ~ 150 DEG C of dryings 1 ~ 10 hour, then roasting 1 ~ 8 hour at 600 ~ 1000 DEG C, just can obtain finished catalyst.
Catalyst obtained as stated above carries out activity rating in isotherm formula fixed bed, and for ethyl benzene dehydrogenation preparation of styrene activity rating, summary process is as follows:
By ethylbenzene and deionized water preheating in measuring pump input mixer respectively, enter reactor in a gaseous form, reactor adopts electric-heating-wire-heating, makes it to reach predetermined temperature.Reactor inside diameter is 1 " stainless steel tube, the interior catalyst loading 100 milliliters.After water condensation, with chromatographic, it forms the dehydrogenation product flowed out by reactor.
The concrete technology condition that catalyst is specifically evaluated is as follows: 100 milliliters of catalyst are put into internal diameter 1 " isothermal reactor, reaction pressure is the liquid air speed 1.0 hours of normal pressure, ethylbenzene
-1, reaction temperature 620 DEG C, water ratio (water/ethylbenzene) (weight) 2.0.
Conversion of ethylbenzene and selectivity of styrene calculate as follows:
(%)=conversion of ethylbenzene (%) × selectivity of styrene (%) received by styrene list
Compared with prior art, catalyst of the present invention reduces rare earth metal, improves cinnamic yield.Especially catalyst of the present invention adopts the oxide simultaneously comprising Zr and Hf, or improves the successful of styrene yield when comprising the oxide of Y and Zr simultaneously; Further, when catalyst of the present invention comprises the oxide of Y, Zr and Hf simultaneously, styrene yield is higher, and styrene yield, up to 72.3%, achieves good technique effect.
Below by embodiment, the invention will be further elaborated.
Detailed description of the invention
[embodiment 1] is by 190.5 grams of Fe
2o
3, 90.2 grams of Fe
2o
3h
2o, 50.6 grams of K
2cO
3, 35.5 grams of Ce (NO
3)
36H
2o, 10.3 grams (NH4)
6mo
7o
244H
2o, 2.4 grams of MgO and 10 gram carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
[embodiment 2] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO and 16 gram carboxymethyl cellulose stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
[embodiment 3] is by 100.1 grams of Fe
2o
3, 183.1 grams of Fe
2o
3h
2o, 55.9 grams of K
2cO
3, 25.4 grams of Ce (NO
3)
36H
2o, 13.2 grams of La (NO
3)
36H
2o, 17.4 grams (NH4)
6mo
7o
244H
2o, 7.2 grams of MgO, 3.5 grams of CaO, 1.5 grams of SrO, 0.8 gram of BaO and 14 gram carboxymethyl cellulose stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
[embodiment 4] is by 123.7 grams of Fe
2o
3, 167.5 grams of Fe
2o
3h
2o, 65.6 grams of K
2cO
3, 12.7 grams of Ce (NO
3)
36H
2o, 26.1 grams of La (NO
3)
36H
2o, 8.3 grams (NH4)
6mo
7o
244H
2o, 10.1 grams of MgO, 4.5 grams of CaO, 0.4 gram of BaO and 15 gram carboxymethyl cellulose stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
[embodiment 5] is by 170.3 grams of Fe
2o
3, 112.5 grams of Fe
2o
3h
2o, 68.2 grams of K
2cO
3, 8.5 grams of Ce (NO
3)
36H
2o, 31.3 grams of La (NO
3)
36H
2o, 11.2 grams (NH4)
6mo
7o
244H
2o, 11.3 grams of CaO, 0.8 gram of SrO, 2.5 grams of BaO and 18 gram carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
[embodiment 6] is by 190.5 grams of Fe
2o
3, 95.5 grams of Fe
2o
3h
2o, 70.8 grams of K
2cO
3, 45.3 grams of La (NO
3)
36H
2o, 9.8 grams (NH4)
6mo
7o
244H
2o, 12.5 grams of CaO and 14 gram carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
[embodiment 7] is by 140.0 grams of Fe
2o
3, 145.3 grams of Fe
2o
3h
2o, 70.6 grams of K
2cO
3, 102.2 grams of Ce (NO
3)
36H
2o, 13.3 grams (NH4)
6mo
7o
244H
2o, 5.3 grams of MgO, 3.6 grams of SrO and 15 gram carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 1.
The preparation method of embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6, with embodiment 1, just adds different amounts and different rare earths and alkaline-earth oxide.The method for preparing catalyst of embodiment 7, with embodiment 1, only has a kind of rare earth oxide content higher, about 10%.
[embodiment 8] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO, 5 grams of Y
2o
3and 16 grams of carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 2.
[embodiment 9] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO, 5 grams of ZrO
2and 16 grams of carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 2.
[embodiment 10] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO, 5 grams of HfO
2and 16 grams of carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 2.
[embodiment 11] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO, 2.5 grams of ZrO
2, 2.5 grams of HfO
2and 16 grams of carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 2.
[embodiment 12] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO, 2.5 grams of Y
2o
3, 2.5 grams of ZrO
2and 16 grams of carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 2.
[embodiment 13] is by 253.3 grams of Fe
2o
3, 32.6 grams of Fe
2o
3h
2o, 60.3 grams of K
2cO
3, 43.3 grams of Ce (NO
3)
36H
2o, 5.6 grams of La (NO
3)
36H
2o, 15.1 grams (NH4)
6mo
7o
244H
2o, 1.4 grams of MgO, 7.1 grams of CaO, 0.3 gram of SrO, 1.6 grams of Y
2o
3, 1.7 grams of ZrO
2, 1.7 grams of HfO
2and 16 grams of carboxymethyl celluloses stir 1 hour in kneading machine, add deionized water and obtain mixture (addition of water is 10% of mixture weight), mix and stir half an hour again, take out extrusion, be extruded into the particle of diameter 3 millimeters, length 6 millimeters, put into baking oven, 80 DEG C are dried 6 hours, then muffle furnace is placed in, in 800 DEG C of roastings, 6 hours obtained catalyst.For ease of comparing, the inventory in catalyst preparing is listed in table 2.
[embodiment 14]
The ethyl benzene dehydrogenation preparation of styrene performance of embodiment, comparative example catalyst lists in table 3.
The effect data of embodiment 8 ~ 13 in the raw material dropped in embodiment 8 ~ 13 preparation process in associative list 2 and table 3, obviously find out, zirconia and hafnium oxide are between the two, yittrium oxide and zirconia are between the two, and yittrium oxide, between zirconia and hafnium oxide three, at raising conversion of ethylbenzene and improve styrene list debit mask and have synergy.
[embodiment 15]
The life-span of its ethyl benzene dehydrogenation preparation of styrene reaction checked and rated by Example 2,7,9,12 and 13 catalyst under the reaction condition that embodiment 14 is identical, the results are shown in Table 4.
Present inventor studies for a long period of time discovery, when in catalytic component simultaneously containing yittrium oxide, zirconia and hafnium oxide time, comparatively only containing during one or both in yittrium oxide, zirconia and hafnium oxide, there is the better life-span.This reaction time from table 4 is that the effect data of 1000 hours also can intuitively be found out.
Fe-K-Mo-Mg (Ca, Sr, Ba) the catalyst preparing inventory that the different rare earth oxide of table 1 promotes
Fe-K-Mo-Ce (La)-Mg (Ca, Si, Ba) the catalyst preparing inventory that the different rich oxygen containing transition metal oxide of table 2 promotes
Table 3 catalyst ethylbenzene dehydrogenation Performance comparision
*: catalyst performance is the mean value of after stable reaction 200 hours.
The different embodiment catalyst of table 4. in ethylbenzene dehydrogenation reaction with the Performance comparision that styrene once through yield represents
*
| Reaction time, hour | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | 900 | 1000 |
| Embodiment 2 | 67.4 | 68.7 | 68.7 | 68.6 | 68.7 | 68.6 | 68.5 | 68.4 | 68.3 | 68.1 |
| Embodiment 7 | 67.9 | 69.1 | 69.1 | 69.0 | 69.1 | 69.0 | 69.0 | 68.9 | 68.8 | 68.7 |
| Embodiment 9 | 70.0 | 71.5 | 71.5 | 71.5 | 71.4 | 71.3 | 71.2 | 71.0 | 71.1 | 70.9 |
| Embodiment 12 | 70.1 | 71.8 | 71.8 | 71.7 | 71.7 | 71.6 | 71.5 | 71.5 | 71.3 | 71.3 |
| Embodiment 13 | 70.6 | 72.3 | 72.3 | 72.3 | 72.2 | 72.2 | 72.1 | 72.0 | 72.0 | 71.9 |
*: obtain under the evaluating catalyst condition in isotherm formula fixed bed reactors.
Claims (10)
1., for the catalyst of ethyl benzene dehydrogenation preparation of styrene, comprise following active constituent by weight percentage:
A) Fe of 55 ~ 85%
2o
3;
B) K of 5 ~ 30%
2o;
C) MoO of 0.5 ~ 5%
3;
D) oxide of Mg, Ca, Sr, Ba at least one of 0.1 ~ 3%;
E) 0.1 ~ 10% oxide being selected from least one in La, Ce;
F) 0.1 ~ 3% oxide being selected from least one in Y, Zr, Hf.
2., according to claim 1 for the catalyst of ethyl benzene dehydrogenation preparation of styrene, the oxide that it is characterized in that being selected from by weight at least one in La, Ce is 1 ~ 10%.
3., according to claim 1 for the catalyst of ethyl benzene dehydrogenation preparation of styrene, the oxide consumption that it is characterized in that being selected from by weight percentage at least one in Y, Zr, Hf is 0.1 ~ 4%.
4. according to described in claims 1 to 3 for the preparation method of the catalyst of ethyl benzene dehydrogenation preparation of styrene, comprise the following steps: the raw material of described component or described component, perforating agent are mixed with water, mediate, extrusion, dry, pelletizing, roasting.
5. preparation method according to claim 4, is characterized in that taking catalyst as benchmark, and perforating agent consumption is 1 ~ 10% by weight percentage.
6. preparation method according to claim 5, is characterized in that described perforating agent is selected from least one in CMC, graphite or polystyrene sphere.
7. preparation method according to claim 4, is characterized in that Fe
2o
3add with the form of iron oxide red and/or iron oxide yellow.
8. preparation method according to claim 4, is characterized in that the temperature of roasting is 600 ~ 1000 DEG C.
9. preparation method according to claim 8, is characterized in that the time of roasting is 1 ~ 8 hour.
10. the application in alkenyl arene prepared by catalyst described in any one of claims 1 to 3 at alkyl aromatics dehydrogenation.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107304159A (en) * | 2016-04-25 | 2017-10-31 | 曹炳铖 | A kind of method and Alkylarylhydrocarbondehydrogenating dehydrogenating catalyst that methyl styrene co-production mesitylene is prepared from C9 aromatic mixture dehydrogenation |
| CN109569639A (en) * | 2017-09-29 | 2019-04-05 | 中国石油化工股份有限公司 | It is used to prepare the dehydrogenation and preparation method thereof of styrene |
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| CN107304159A (en) * | 2016-04-25 | 2017-10-31 | 曹炳铖 | A kind of method and Alkylarylhydrocarbondehydrogenating dehydrogenating catalyst that methyl styrene co-production mesitylene is prepared from C9 aromatic mixture dehydrogenation |
| CN107304159B (en) * | 2016-04-25 | 2021-03-26 | 曹炳铖 | Method for preparing methyl styrene and coproducing mesitylene by dehydrogenation of carbon nonaarene mixture and alkyl arene dehydrogenation catalyst |
| CN109569639A (en) * | 2017-09-29 | 2019-04-05 | 中国石油化工股份有限公司 | It is used to prepare the dehydrogenation and preparation method thereof of styrene |
| CN109569639B (en) * | 2017-09-29 | 2020-06-09 | 中国石油化工股份有限公司 | Dehydrogenation catalyst for preparing styrene and preparation method thereof |
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