CN101612577A - A kind of inverse transformation catalyst for carbon dioxide and preparation method thereof - Google Patents
A kind of inverse transformation catalyst for carbon dioxide and preparation method thereof Download PDFInfo
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- CN101612577A CN101612577A CN200910305043A CN200910305043A CN101612577A CN 101612577 A CN101612577 A CN 101612577A CN 200910305043 A CN200910305043 A CN 200910305043A CN 200910305043 A CN200910305043 A CN 200910305043A CN 101612577 A CN101612577 A CN 101612577A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000003054 catalyst Substances 0.000 title claims abstract description 56
- 230000009466 transformation Effects 0.000 title claims abstract description 41
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 31
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 14
- 238000004062 sedimentation Methods 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 16
- 229910002651 NO3 Inorganic materials 0.000 claims description 15
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 15
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000008367 deionised water Substances 0.000 claims description 12
- 229910021641 deionized water Inorganic materials 0.000 claims description 12
- 239000000314 lubricant Substances 0.000 claims description 11
- 239000012065 filter cake Substances 0.000 claims description 9
- 238000001556 precipitation Methods 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 238000005406 washing Methods 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 230000032683 aging Effects 0.000 claims description 5
- 238000006386 neutralization reaction Methods 0.000 claims description 5
- 239000012188 paraffin wax Substances 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 4
- 238000000465 moulding Methods 0.000 claims description 4
- 230000007935 neutral effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 2
- 239000002244 precipitate Substances 0.000 claims description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
- 229910052593 corundum Inorganic materials 0.000 claims 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims 3
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum oxide Inorganic materials [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 claims 2
- KTUFCUMIWABKDW-UHFFFAOYSA-N oxo(oxolanthaniooxy)lanthanum Chemical compound O=[La]O[La]=O KTUFCUMIWABKDW-UHFFFAOYSA-N 0.000 claims 2
- IATRAKWUXMZMIY-UHFFFAOYSA-N strontium oxide Inorganic materials [O-2].[Sr+2] IATRAKWUXMZMIY-UHFFFAOYSA-N 0.000 claims 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 229910052725 zinc Inorganic materials 0.000 abstract description 7
- 230000003197 catalytic effect Effects 0.000 abstract description 4
- 229960004424 carbon dioxide Drugs 0.000 description 19
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 18
- 238000005516 engineering process Methods 0.000 description 12
- 239000007789 gas Substances 0.000 description 12
- 238000000034 method Methods 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 8
- 239000000571 coke Substances 0.000 description 5
- 238000003786 synthesis reaction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 3
- 238000006555 catalytic reaction Methods 0.000 description 3
- 238000005469 granulation Methods 0.000 description 3
- 230000003179 granulation Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 238000005303 weighing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 206010013786 Dry skin Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- -1 after mixing Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910002090 carbon oxide Inorganic materials 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004448 titration Methods 0.000 description 1
- 230000001131 transforming effect Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses a kind of inverse transformation catalyst for carbon dioxide, it is mainly with Fe, Zn oxide (ZnFe
2O
4) be active component, with Al
2O
3Be carrier, SrO is the polynary multiphase catalyst of the sedimentation type of auxiliary agent.This catalyst has good catalytic conversion activity, also possesses good selectivity simultaneously.The invention also discloses a kind of preparation method of above-mentioned inverse transformation catalyst for carbon dioxide.
Description
Technical field
The invention belongs to catalyst technical field, particularly a kind of carbon dioxide inverse transformation catalysis and preparation method thereof.
Background technology
Along with the continuous increase of the industrial development and the organic class energy of human use, CO in the atmosphere
2Concentration also continue to rise.By CO
2" greenhouse effects " that bring have caused the extensive concern of countries in the world.In recent years, with CO
2For the chemical synthesis of raw material is subjected to pay attention to day by day.With CO
2Use as carbon resource, not only can reduce CO
2Environmental problems such as greenhouse effects are eliminated in discharging, also can develop new carbon resource for chemical industry simultaneously.
But directly with CO
2Be the feedstock production organic product, as with CO
2Be feedstock production methyl alcohol, exist the low problem of conversion ratio and selectivity.With CO
2Being transformed into CO, is the feedstock production organic product again with CO, can solve the low problem of conversion ratio and selectivity, also can improve simultaneously the output of product, as the technology of industrial production methyl alcohol, transforming under the condition that load, compression load, synthetic air speed do not improve, by with CO
2Be transformed into CO, adjust CO, CO
2Ratio can improve methanol output about 10%.
At present commercial Application with CO
2The technology that is transformed into CO mainly adopts CO
2And O
2Gas coke prepares the mode of high-purity CO.This technology is applicable to those needs CO and does not need H
2Synthesis technique and larger device.Therefore, this technology is except the range of application limitation, and also existing owing to adopting coke is that raw material exists shortcomings such as dust, sulphur, raw material transportation.
Another kind of with CO
2The method that is transformed into CO is that H is being arranged
2Under the condition of source of the gas, with CO
2Inversion changes CO into.As everyone knows, the key reaction of Water gas shift/WGS is under the uniform temperature condition, and CO in the gas and steam react under the effect of catalyst, generates H
2And CO
2, its reaction equation is as follows:
CO+H
2O (vapour) → CO
2+ H
2+ 41.12kJ/mol
The back reaction of this transformationreation is called reverse shift reaction, and the reaction equation of reverse shift reaction is as follows:
CO
2+ H
2→ CO+H
2O (vapour)-41.12kJ/mol
H is being arranged
2Under the condition of source of the gas, with CO
2Inversion changes CO into can overcome employing CO
2And O
2Gas coke prepares the existing deficiency of CO, but CO
2The reaction needed that inversion changes CO into has suitable catalyst to exist.And it is at present domestic at CO
2This class research of inverse transformation catalyst and process aspect is almost blank, therefore is necessary to develop a kind of CO
2Inversion changes the catalyst of CO into.
Summary of the invention
The objective of the invention is to overcome unsuitable, eco-friendly CO in the prior art
2The deficiency of inverse transformation catalyst provides a kind of environmental friendliness, has good catalyzed conversion activity, good CO optionally
2Inverse transformation catalyst.Another object of the present invention is to provide this Preparation of catalysts method.
In order to realize the foregoing invention purpose, the inventor provides following technical scheme through series of experimental research:
A kind of inverse transformation catalyst for carbon dioxide, it is the polynary multiphase catalyst of mainly being made up of active component, carrier and auxiliary agent of sedimentation type, it is characterized in that: described active component is by Fe
2O
3Form with ZnO, (crystalline form of Fe, Zn oxide is ZnFe
2O
4), described carrier is Al
2O
3, described auxiliary agent is SrO, MnO
2Or La
2O
3
The active component of described inverse transformation catalyst for carbon dioxide and auxiliary agent preferably add with the form of nitrate, precipitate with sodium carbonate, and described carrier is preferably 200 orders～300 purpose Al
2O
3Fine powder.
The weight proportion of each primary raw material is preferred in the described inverse transformation catalyst for carbon dioxide: Fe
2O
335～55 parts, 35～45 parts of ZnO, Al
2O
310～20 parts, SrO, MnO
2Or La
2O
32～10 parts.
The column of the preferred Φ 3.5～5.0mm of the shape of described inverse transformation catalyst for carbon dioxide * H 3.5～5.0mm.
Also comprise 1～5 part of lubricant in the described inverse transformation catalyst for carbon dioxide, described lubricant is graphite, stearate or paraffin.
A kind of preparation method of inverse transformation catalyst for carbon dioxide of the present invention may further comprise the steps:
(1), in the nitrate solid of active component, auxiliary agent, add deionized water, being mixed with each constituent content summation is the nitrate solution of 30g/L～60g/L;
(2), adding fineness in nitrate solution is 200 orders～300 purpose Al
2O
3Powder mixes;
(3), be that 10% sodium carbonate liquor carries out neutralization-precipitation reaction with mass content at normal temperatures;
(4), neutralization precipitation finish after with reaction mass shelf ageing 1h～3h, filter filter cake, with deionized water with the filter cake washing to neutral (washing 3 times), at 100 ℃～150 ℃ dry 1h～3h, then in 550 ℃～650 ℃ ± 20 ℃ roasting 2h～4h;
(5), add lubricant in the material after roasting, mill mixes 0.5h～2h in the ball mill mixing machine, make material fineness 〉=250 orders, adding percentage by weight by the material gross weight then is 8%～12% deionized water, material after mixing with water is through after the preliminary treatment, be pressed into catalyst granules by former again, promptly get catalyst of the present invention.
Compared with prior art, the present invention has following beneficial effect: the inventor is through a large amount of tests, and providing with Fe, Zn oxide is active component, with Al
2O
3Be carrier, with SrO, MnO
2Or La
2O
3Carbon dioxide inverse conversion catalyst for auxiliary agent.After testing, carbon dioxide inverse conversion catalyst of the present invention has good catalytic conversion activity, possesses good selectivity.Carbon dioxide inverse conversion catalyst of the present invention do not need to be applied to H with respect to utilizing coke to prepare CO
2Synthesis technique and larger device, inverse transformation technology is removed has continuous production, pollutes outside the characteristics such as little, needing also can be widely used in the organic synthesis technology of hydrogen source and installs.After adopting inverse transformation technology, reduced atmosphere pollution greatly, its social benefit also is significant.Because the CO in present industrial by-product gas and the waste gas
2The concentration height can be used as source of the gas in order to produce organic products such as methyl alcohol, ethanol, formic acid as fermentation gas, lime furnace gas, synthetic ammonia manufacture gas, oil plant manufacture gas, coke oven and heavy oil combustion gas etc. more.Not only prevented CO
2Discharging has been created new benefit source for enterprise again to the harm of atmosphere.
CO
2The research success of inverse transformation Catalytic processes and catalyst provides inverse transformation process basic technology data and homemade inverse transformation catalyst for methanol production reaches the synthetic enterprise of relevant organic series products.According to preresearch estimates, with regard to methanol production, utilize inverse transformation technology to increase production about 10%.But because inverse transformation catalytic unit separate configurations, separate with main system, thereby adopt this project devoid of risk, no matter the old and new factory adopts the effect that all can receive energy-saving and cost-reducing volume increase behind the inverse transformation catalysis technique.The configuration of its effect size and inverter, the technological parameter of employing, and inverse transformation catalyst and even the average relevant system of management of water.Therefore for domestic production enterprise, inverse transformation technology and catalyst have wide application market.
Description of drawings
Fig. 1 is the preparation flow schematic diagram of carbon dioxide inverse transformation catalysis of the present invention.
The specific embodiment
The present invention is described in further detail with the test example below in conjunction with the specific embodiment.But this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following embodiment, allly all belong to scope of the present invention based on the technology that content of the present invention realized.
Embodiment 1
The inverse transformation catalyst for carbon dioxide of present embodiment is with Fe, Zn oxide (ZnFe
2O
4) be active component, with Al
2O
3Being carrier, is auxiliary agent with SrO, is the polynary multiphase catalyst of sedimentation type of lubricant with graphite, wherein, and the weight portion proportioning such as the table 1 of each component:
Table 1 embodiment 1 forms proportioning
| Form | ?Fe 2O 3 | ?ZnO | ?SrO | ?Al 2O 3 | Graphite |
| Proportioning | ?40 | ?40 | ?5 | ?15 | ??1 |
The preparation flow of present embodiment inverse transformation catalyst for carbon dioxide as shown in Figure 1, present embodiment Preparation of catalysts method mainly comprises the steps:
(1), in proportion take by weighing the nitrate solid of each active component, auxiliary agent, add deionized water, being mixed with each constituent content summation is the nitrate solution of 30g/L;
(2), adding fineness in nitrate solution is 200 purpose Al
2O
3Powder mixes;
(3), be that 10% sodium carbonate liquor carries out neutralization-precipitation reaction with mass content at normal temperatures;
(4), neutralization precipitation finish after with reaction mass shelf ageing 1h～3h, filter filter cake, with deionized water with the filter cake washing to neutral (washing 3 times), at 100 ℃～150 ℃ dry 1h～3h, then in 550 ℃～650 ℃ ± 20 ℃ roasting 2h～4h;
(5), add lubricant in the material after roasting, mill mixes 0.5h～2h in the ball mill mixing machine, makes material fineness 〉=250 orders, is 8%～12% deionized water then by material gross weight adding percentage by weight, the cylindrical catalyst finished product of Φ 3.5 * H3.5mm is made in granulation, moulding.
Embodiment 2
The inverse transformation catalyst for carbon dioxide of present embodiment is with Fe, Zn oxide (ZnFe
2O
4) be active component, with Al
2O
3Be carrier, with MnO
2Being auxiliary agent, is the polynary multiphase catalyst of sedimentation type of lubricant with graphite, wherein, and the weight portion proportioning such as the table 2 of each component:
Table 2 embodiment 2 forms proportioning
| Project | ?Fe 2O 3 | ?ZnO | ?MnO 2 | ?Al 2O 3 | Graphite |
| Proportioning | ?55 | ?35 | ?10 | ?10 | ??5 |
The preparation flow of present embodiment inverse transformation catalyst for carbon dioxide as shown in Figure 1, present embodiment Preparation of catalysts method mainly comprises the steps:
(1), in proportion take by weighing the nitrate of Fe, Zn, Mn, add deionized water, being mixed with each constituent content summation is the nitrate solution of 60g/L;
(2), adding fineness in nitrate solution is 300 purpose Al
2O
3Powder mixes;
(3), be that 10% sodium carbonate liquor carries out neutralization-precipitation reaction with mass content at normal temperatures;
(4), neutralization precipitation finish after with reaction mass shelf ageing 1h～3h, filter filter cake, with deionized water with the filter cake washing to neutral (washing 3 times), at 100 ℃～150 ℃ dry 1h～3h, then in 550 ℃～650 ℃ ± 20 ℃ roasting 2h～4h;
(5), add lubricant in the material after roasting, mill mixes 0.5h～2h in the ball mill mixing machine, makes material fineness 〉=250 orders, is 8%～12% deionized water then by material gross weight adding percentage by weight, the cylindrical catalyst finished product of Φ 3.5 * H3.5mm is made in granulation, moulding.
Embodiment 3
The inverse transformation catalyst for carbon dioxide of present embodiment is with Fe, Zn oxide (ZnFe
2O
4) be active component, with Al
2O
3Be carrier, with MnO
2Being auxiliary agent, is the polynary multiphase catalyst of sedimentation type of lubricant with paraffin, wherein, and the weight portion proportioning such as the table 3 of each component:
Table 3 embodiment 3 forms proportioning
| Component | ?Fe 2O 3 | ?ZnO | ?La 2O 3 | ?Al 2O 3 | Paraffin |
| Proportioning | ?35 | ?45 | ?2 | ?18 | ??3 |
The preparation flow of present embodiment carbonoxide inverse transformation catalyst as shown in Figure 1, its method mainly comprises the steps: to take by weighing Fe, the Zn of described proportioning, the nitrate solution of La, and to add fineness in its solution be 200 orders～300 purpose Al
2O
3Powder, after mixing, sodium carbonate liquor with mass content 10% carries out titration, after neutralization precipitation finishes with the reaction mass shelf ageing after 1 hour～3 hours, filter, wash (washing 3 times), filter cake was 100 ℃～150 ℃ dryings 1 hour～3 hours, in calciner, send in the ball mill mixing machine after 2 hours～4 hours then in 550 ℃～650 ℃ ± 20 ℃ roastings, adding the paraffin mill mixed 0.5 hour～2 hours, add water then and carry out granulation, moulding, make the cylindrical catalyst finished product of Φ 3.5 * 3.5mm.
The test example
The inventor has carried out conversion ratio and optionally evaluation to the inverse transformation catalyst for carbon dioxide of the foregoing description 1～3, and process conditions and measurement result see Table 4:
Carbon dioxide conversion and selectivity computing formula
Conversion ratio=(CO+CH
4) (mol%)/(CO+CO
2+ CH
4) (mol%)
Selectivity=CO (mol%)/(CO+CH
4) (mol%)
Table 4 conversion ratio and optionally evaluation
Claims (6)
1. inverse transformation catalyst for carbon dioxide, it is the polynary multiphase catalyst of mainly being made up of active component, carrier and auxiliary agent of sedimentation type, it is characterized in that: described active component is made up of Fe2O3 and ZnO, and described carrier is Al2O3, and described auxiliary agent is SrO, MnO2 or La2O3.
2. inverse transformation catalyst for carbon dioxide according to claim 1 is characterized in that: described active component and auxiliary agent add with the form of nitrate, precipitate with sodium carbonate, and described carrier is 200 orders～300 purpose Al2O3 fine powders.
3. inverse transformation catalyst for carbon dioxide according to claim 1 is characterized in that: the column of the preferred Φ 3.5～5.0mm of the shape of described inverse transformation catalyst for carbon dioxide * H 3.5～5.0mm.
4. inverse transformation catalyst for carbon dioxide according to claim 1, it is characterized in that: the weight proportion of each primary raw material is in the described inverse transformation catalyst for carbon dioxide: Fe2O335～55 part, 35～45 parts of ZnO, Al2O310～20 part, 2～10 parts of SrO, MnO2 or La2O3.
5. inverse transformation catalyst for carbon dioxide according to claim 4 is characterized in that: also comprise 1～5 part of lubricant in the described inverse transformation catalyst for carbon dioxide, described lubricant is graphite, stearate or paraffin.
6. a kind of preparation method of the described inverse transformation catalyst for carbon dioxide of claim 1 is characterized in that may further comprise the steps:
(1), in the nitrate solid of active component, auxiliary agent, add deionized water, being mixed with each constituent content summation is the nitrate solution of 30g/L～60g/L;
(2), to add fineness in nitrate solution be 200 orders～300 purpose Al2O3 powder, mix;
(3), be that 10% sodium carbonate liquor carries out neutralization-precipitation reaction with mass content at normal temperatures;
(4), neutralization precipitation finish after with reaction mass shelf ageing 1h～3h, filter filter cake, with deionized water with the filter cake washing to neutral, at 100 ℃～150 ℃ dry 1h～3h, then in 550 ℃～650 ℃ ± 20 ℃ roasting 2h～4h;
(5), add lubricant in the material after roasting, mill mixes 0.5h～2h in the ball mill mixing machine, makes material fineness 〉=250 orders, and adding percentage by weight by the material gross weight then is 8%～12% deionized water, and moulding promptly gets catalyst of the present invention.
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Cited By (2)
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|---|---|---|---|---|
| CN103230799A (en) * | 2013-04-08 | 2013-08-07 | 中国科学院广州能源研究所 | Cu-Zn-based catalyst used in reverse water gas shift reaction, and preparation method and application thereof |
| CN108373138A (en) * | 2018-03-14 | 2018-08-07 | 中国成达工程有限公司 | A kind of synthesis gas preparation system and preparation process |
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| CN1005019B (en) * | 1987-01-17 | 1989-08-23 | 中国科学院大连化学物理研究所 | Dehydrogenation catalyst for alkyl aromatic hydrocarbons |
| CN101183585A (en) * | 2007-09-26 | 2008-05-21 | 广东风华高新科技股份有限公司 | MnZn ferrite material and method of manufacturing the magnetic core |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103230799A (en) * | 2013-04-08 | 2013-08-07 | 中国科学院广州能源研究所 | Cu-Zn-based catalyst used in reverse water gas shift reaction, and preparation method and application thereof |
| CN103230799B (en) * | 2013-04-08 | 2016-06-08 | 中国科学院广州能源研究所 | A kind of Cu-Zn for reverse water-gas-shift reaction is catalyst based, its preparation method and application |
| CN108373138A (en) * | 2018-03-14 | 2018-08-07 | 中国成达工程有限公司 | A kind of synthesis gas preparation system and preparation process |
| CN108373138B (en) * | 2018-03-14 | 2020-05-05 | 中国成达工程有限公司 | Synthetic gas preparation system and preparation process |
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