CN1361230A - Liquid-phase normal-temperature aviation kerosene fine desulfurizing agent and preparation method thereof - Google Patents
Liquid-phase normal-temperature aviation kerosene fine desulfurizing agent and preparation method thereof Download PDFInfo
- Publication number
- CN1361230A CN1361230A CN 02112509 CN02112509A CN1361230A CN 1361230 A CN1361230 A CN 1361230A CN 02112509 CN02112509 CN 02112509 CN 02112509 A CN02112509 A CN 02112509A CN 1361230 A CN1361230 A CN 1361230A
- Authority
- CN
- China
- Prior art keywords
- content
- zinc
- tio
- nio
- aviation kerosene
- 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.)
- Pending
Links
- 239000003350 kerosene Substances 0.000 title claims abstract description 16
- 239000007791 liquid phase Substances 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 title claims description 13
- 230000003009 desulfurizing effect Effects 0.000 title claims description 8
- 239000002994 raw material Substances 0.000 claims abstract description 5
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 50
- 239000011787 zinc oxide Substances 0.000 claims description 25
- 235000003599 food sweetener Nutrition 0.000 claims description 15
- 239000003765 sweetening agent Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 12
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 10
- UOURRHZRLGCVDA-UHFFFAOYSA-D pentazinc;dicarbonate;hexahydroxide Chemical compound [OH-].[OH-].[OH-].[OH-].[OH-].[OH-].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[Zn+2].[O-]C([O-])=O.[O-]C([O-])=O UOURRHZRLGCVDA-UHFFFAOYSA-D 0.000 claims description 9
- 238000006477 desulfuration reaction Methods 0.000 claims description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- GNRSAWUEBMWBQH-UHFFFAOYSA-N nickel(II) oxide Inorganic materials [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 6
- 238000007670 refining Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 4
- 239000004480 active ingredient Substances 0.000 claims description 3
- 150000003752 zinc compounds Chemical class 0.000 claims description 3
- FMRLDPWIRHBCCC-UHFFFAOYSA-L Zinc carbonate Chemical compound [Zn+2].[O-]C([O-])=O FMRLDPWIRHBCCC-UHFFFAOYSA-L 0.000 claims description 2
- 238000000975 co-precipitation Methods 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 238000006386 neutralization reaction Methods 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 238000003756 stirring Methods 0.000 claims description 2
- 229910000010 zinc carbonate Inorganic materials 0.000 claims description 2
- 239000011667 zinc carbonate Substances 0.000 claims description 2
- 235000004416 zinc carbonate Nutrition 0.000 claims description 2
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 claims description 2
- 229910021511 zinc hydroxide Inorganic materials 0.000 claims description 2
- 229940007718 zinc hydroxide Drugs 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims 1
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 abstract description 9
- 238000005260 corrosion Methods 0.000 abstract description 9
- 230000007797 corrosion Effects 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 7
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 abstract description 5
- 238000002156 mixing Methods 0.000 abstract description 4
- 239000011593 sulfur Substances 0.000 abstract description 4
- 229910052717 sulfur Inorganic materials 0.000 abstract description 4
- 239000003054 catalyst Substances 0.000 abstract 1
- 229910052709 silver Inorganic materials 0.000 description 8
- 239000004332 silver Substances 0.000 description 8
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 5
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 3
- 235000015165 citric acid Nutrition 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000001404 mediated effect Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 229910000480 nickel oxide Inorganic materials 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 3
- 229910052725 zinc Inorganic materials 0.000 description 3
- 239000011701 zinc Substances 0.000 description 3
- 235000006408 oxalic acid Nutrition 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 150000002913 oxalic acids Chemical class 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
Landscapes
- Production Of Liquid Hydrocarbon Mixture For Refining Petroleum (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
An aviation kerosene liquid phase normal temperature fine desulfurizer and a preparation method thereof, which belong to the field of petrochemical industry. The catalyst is prepared by mixing ZnO and a cocatalyst which are main raw materials, and the using temperature is 0-200 ℃, and the using pressure is 0.1-6.0 MPa (absolute pressure). Compared with the prior art, the activity of the desulfurizer is improved by 10-30%, the sulfur capacity is improved by more than 10%, and the desulfurizer has an obvious effect on the standard-reaching silver flake corrosion index of aviation kerosene.
Description
Technical field: the invention belongs to petrochemical industry, be specifically related to a kind of novel liquid phase normal temperature aviation kerosene refining desulfurizer and preparation method.
Background technology: Zinc oxide desulfurizer is widely used in the smart desulfurization of petrochemical materials gas, industrial gas.Having characteristics such as desulfurization precision height, Sulfur capacity be big, is more sophisticated product.At present the commodity Zinc oxide desulfurizer mainly contains three kinds of high temperature and low temperature and room temperatures, and the former use temperature is 350～400 ℃, and middle person's use temperature is 180～250 ℃, and the latter is in room temperature range.Because preceding two types sweetening agent all needs to use under the certain temperature, needs thermal source, and consumes certain energy; Sweetening agent also can play certain katalysis simultaneously, and some side reactions take place.In order to overcome above-mentioned shortcoming, carried out the development of normal temp zinc oxide desulfuriging agent in recent years in the world, European patent 279116; 207645; 230146 and Chinese patent 93111222.2 a kind of normal temp zinc oxide desulfuriging agent is disclosed, its use temperature is low, has certain low temperature active, but it is relatively poor that its weak point is an intensity, point is pressed and only is 28N/, and low temperature active is on the low side, and less and the life-span is shorter to the silver slice corrosion index contribution up to standard of aviation kerosene, use cost is higher.
Summary of the invention: the novel liquid phase normal temperature aviation kerosene refining desulfurizer that the present invention seeks to develop a kind of higher low temperature active and higher-strength.
The novel liquid phase normal temperature aviation kerosene refining desulfurizer of the present invention's development contains ZnO, TiO
2, NiO, Al
2O
3Component, active ingredient ZnO, its content are 62～95% (wt), promotor mainly is TiO
2, NiO, Al
2O
3Mixture, TiO
2Content is 0.5～5.0 (wt), and NiO content is 0.1～3.0 (wt), Al
2O
3Content is 1.5～15.0 (wt).
Zinc oxide in the sweetening agent can be that the form of the one or more kinds of mixtures in zinc oxide, zinc hydroxide, zinc carbonate, zinc subcarbonate or the water-soluble zinc compound enters, water-soluble zinc compound can be a nitrate, acetate etc., wherein add best with ZnO and zinc subcarbonate form, zinc oxide accounts for 10～50%, and zinc subcarbonate accounts for 90～50% (wt).In the present invention, the mixture for preparing zinc subcarbonate and zinc oxide with a kind of coprecipitation method.It is that in this mixture of neutralization, stir on the limit, thereby generate a kind of slurry in 40-95 ℃ the pure water that the aqueous solution that is dissolved with a kind of zn cpds aqueous solution and a kind of yellow soda ash or sodium hydroxide dropwise is added to temperature simultaneously with constant speed.Wash the precipitation that is generated then, 110-120 ℃ of drying, then, in about 280-450 ℃ roasting.These conditions can be selected arbitrarily and there is no particular limitation according to the kind of used zn cpds.The zinc subcarbonate of gained and zinc oxide mixture need uniform mixing each other.
For intensity and the activity that improves sweetening agent, after mixing, above-mentioned raw materials added a kind of peptizing agent.This solvent can be a kind of mineral acid, as nitric acid, also can be a kind of organic acid or two or more mixtures, as oxalic acid, citric acid etc.Its add-on is 1～10% (wt) of siccative.Extrusion, drying, roasting make the finished product sweetening agent according to a conventional method then, and it consists of ZnO 72～95% (wt), TiO
20.5～5.0 (wt), NiO0.1～3.0 (wt), Al
2O
3Content is 1.5～15.0 (wt).
Shatter strength 〉=the 40N/cm of finished product sweetening agent of the present invention, specific surface are 50～100m
2/ g, specific pore volume＞0.2ml/g.
This sweetening agent mainly is applicable to the smart desulfurization of aviation kerosene normal temperature liquid phase, and its use temperature can be in 0～50 ℃ of scope, applying pressure 0.1～6.0MPa (absolute pressure).
The effect of invention,
Normal temperature liquid phase desulfurizing agent of the present invention and external like product Britain product compare experiment,
Experiment condition: doctor solution consumption 0.8ml
Desulfurization temperature: 20 ℃
Pressure: normal pressure
Raw material aviation kerosene: inlet H
2S 10 μ gg
-1Outlet H
2S＜0.05 μ gg
-1, and silver slice corrosion is up to standard
The effects 3,6,9,12h
-1Desulfurization situation under four air speed conditions, the result is as shown in table 1: the silver slice corrosion time length up to standard of table 1, two kinds of different air speeds of sweetening agent
| The air speed silver slice corrosion time length up to standard | ?3h ～1(m/m) | ??6h ～1??(m/m) | ??9h ～1??(m/m) | ??12h ～1??(m/m) |
| The present invention navigate the jet sweetening agent (hour) | ????160 | ????93 | ????52 | ????31 |
| Britain's product (hour) | ????90 | ????42 | ????23 | ????10 |
Experiment has also been investigated two kinds of sweetening agents at 20 ℃, 90 ℃ desulfurization performances, and wherein air speed is 9h
-1, sulphur content is 10 μ gg in the raw material boat coal
-1(m/m).The result is as shown in table 2.
The silver slice corrosion time length up to standard under table 2, the two kinds of sweetening agent differing tempss
| The silver slice corrosion time length up to standard | ????20℃ | ????90℃ |
| Sweetening agent of the present invention | ????52 | ????88 |
| Britain's product | ????23 | ????31 |
From table 1, table 2 the Sulfur capacity height and the silver slice corrosion longer duration up to standard of sweetening agent of the present invention as can be seen, promptly active high.
Desulfurizer activity of the present invention improves 10～30% than prior art, and Sulfur capacity improves more than 10%, and intensity is also than prior art height, has an obvious effect to the silver slice corrosion index of aviation kerosene is up to standard.
Embodiment: the present invention is described in detail below in conjunction with embodiment.
Embodiment 1
80 parts of zinc subcarbonates, 20 parts in zinc oxide, 3 parts of titanium oxide, 1 part of nickel oxide, 12 parts in aluminum oxide are done and are mixed that the back adds that 2 parts of water are mediated in right amount, behind the extruded moulding, drying, roasting promptly get liquid phase normal temperature aviation kerosene refining desulfurizer.
Embodiment 2
90 parts of zinc subcarbonates, 10 parts in zinc oxide, 2 parts of titanium oxide, 1 part of nickel oxide, 12 parts in aluminum oxide are done and are mixed the back and add 5 parts of citric acids, and water is mediated in right amount, behind the extruded moulding, drying, the roasting kerosene liquid phase normal temperature desulfurizing agent of promptly having leisure.
Embodiment 3
70 parts of zinc subcarbonates, 30 parts in zinc oxide, 4 parts of titanium oxide, 3 parts of nickel oxide, 11 parts in aluminum oxide add 2 parts of oxalic acids after doing and mixing, 4 parts of citric acids, water is mediated in right amount, behind the extruded moulding, drying, the roasting kerosene liquid phase normal temperature desulfurizing agent of promptly having leisure.
Claims (5)
1, a kind of liquid phase normal temperature aviation kerosene refining desulfurizer and preparation method is characterized in that it contains ZnO, TiO
2, NiO, Al
2O
3Component, active ingredient ZnO, its content are 62～95% (wt), promotor is TiO
2, NiO, Al
2O
3Mixture, TiO
2Content is 0.5～5.0% (wt), and NiO content is 0.1～3.0% (wt), Al
2O
3Content is 1.5～15.0% (wt).
2, a kind of preparation method of desulfurizing agent as claimed in claim 1, it is characterized in that the zinc oxide in the sweetening agent is with zinc oxide, zinc hydroxide, zinc carbonate, the form of a kind of or two or more mixtures in zinc subcarbonate or the water-soluble zinc compound enters, wherein add best with ZnO and zinc subcarbonate form, zinc oxide accounts for 10～50%, zinc subcarbonate accounts for 90～50% (wt), mixture with each zinc subcarbonate of a kind of coprecipitation method system and zinc oxide, it is in 40-95 ℃ the pure water that the aqueous solution that is dissolved with a kind of zn cpds aqueous solution and a kind of yellow soda ash or sodium hydroxide dropwise is added to temperature simultaneously with constant speed, in this mixture of neutralization, stir on the limit, generate a kind of slurry, the precipitation that washing is generated, 110-120 ℃ of drying, then, 280-450 ℃ of roasting, add other raw materials by proportioning then and mix, extrusion, dry, roasting makes the finished product sweetening agent.
3, a kind of desulfurizing agent as claimed in claim 1 is characterized in that it contains ZnO, TiO
2, NiO, Al
2O
3Component and peptizing agent, active ingredient ZnO, its content are 72～95% (wt), promotor is TiO
2, NiO, Al
2O
3Mixture, TiO
2Content is 0.5～5.0% (wt), and NiO content is 0.1～3.0% (wt), Al
2O
3Content is 1.5～15.0% (wt), and peptizing agent content is 1～10% (wt).
4, a kind of as claim 1 or 3 described desulfurizing agents, it is characterized in that its shatter strength 〉=40N/cm, specific surface is 50～100m
2/ g, specific pore volume＞0.2ml/g.
5, a kind of as claim 1 or 3 described desulfurizing agents, it is characterized in that it mainly is applicable to the smart desulfurization of aviation kerosene normal temperature liquid phase, its use temperature can be in 0～50 ℃ of scope, applying pressure 0.1～6.0MPa (absolute pressure).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112509 CN1361230A (en) | 2002-01-08 | 2002-01-08 | Liquid-phase normal-temperature aviation kerosene fine desulfurizing agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02112509 CN1361230A (en) | 2002-01-08 | 2002-01-08 | Liquid-phase normal-temperature aviation kerosene fine desulfurizing agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1361230A true CN1361230A (en) | 2002-07-31 |
Family
ID=4742064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02112509 Pending CN1361230A (en) | 2002-01-08 | 2002-01-08 | Liquid-phase normal-temperature aviation kerosene fine desulfurizing agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1361230A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212369A (en) * | 2012-01-19 | 2013-07-24 | 北京三聚环保新材料股份有限公司 | High-strength ferric hydroxide desulfurizer for normal temperature desulfurization, and preparation method thereof |
| CN104803675A (en) * | 2009-01-12 | 2015-07-29 | Ifp新能源公司 | Preparation of a solid based on zinc oxide for use in purifying a gas or a liquid |
| CN114272918A (en) * | 2021-12-31 | 2022-04-05 | 辽宁玖号科技有限公司 | Preparation method of zinc oxide desulfurizer |
-
2002
- 2002-01-08 CN CN 02112509 patent/CN1361230A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104803675A (en) * | 2009-01-12 | 2015-07-29 | Ifp新能源公司 | Preparation of a solid based on zinc oxide for use in purifying a gas or a liquid |
| CN104803675B (en) * | 2009-01-12 | 2020-05-05 | Ifp 新能源公司 | Preparation of zinc oxide-based solids useful for purifying gases or liquids |
| CN103212369A (en) * | 2012-01-19 | 2013-07-24 | 北京三聚环保新材料股份有限公司 | High-strength ferric hydroxide desulfurizer for normal temperature desulfurization, and preparation method thereof |
| CN103212369B (en) * | 2012-01-19 | 2016-09-14 | 北京三聚环保新材料股份有限公司 | A kind of high-strength FeOOH desulfurizer of room temperature desulfurization and preparation method thereof |
| CN114272918A (en) * | 2021-12-31 | 2022-04-05 | 辽宁玖号科技有限公司 | Preparation method of zinc oxide desulfurizer |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1081487C (en) | Supported palladium catalyst for selective catalytic hydrogenation of acetylene in hydrocarbonaceous streams | |
| US3661805A (en) | Method of manufacturing an extruded catalyst composition | |
| CN100584455C (en) | Method for preparing copper base catalyst | |
| CN102923744A (en) | Preparation method for aluminum oxide by direct forming method | |
| CN102302934B (en) | Novel auxiliary-modified catalyst for preparing methanol by catalytic hydrogenation of carbon dioxide and preparation method of catalyst | |
| CN1052664C (en) | Unsupported catalyst for producing 1, 4-butynediol and preparation method and application thereof | |
| CN104624196B (en) | A kind of high-specific surface area fischer-tropsch synthetic catalyst and preparation method and application | |
| CN101983765B (en) | Catalyst for preparing methyl alcohol by catalytic hydrogenation on assistant modified carbon dioxide and preparation method thereof | |
| CN102794180A (en) | Preparation of copper-cerium hydrogenation catalyst and catalytic cellulose hydrogenation method thereof | |
| CN110903164B (en) | Method for synthesizing 4-methyl-2-pentanol by hydrogenation of methyl isobutyl ketone | |
| CN107519881B (en) | Preparation method of cyclohexyl acetate hydrogenation catalyst, prepared hydrogenation catalyst and cyclohexyl acetate hydrogenation method | |
| CN110142044A (en) | A kind of hydrogenation of petroleum resin catalyst and its preparation method and application | |
| CN1046213C (en) | Normal temperature zinc oxide desulfurizer and preparation method thereof | |
| CN1361230A (en) | Liquid-phase normal-temperature aviation kerosene fine desulfurizing agent and preparation method thereof | |
| CN101665715A (en) | Normal-temperature desulfurizer for oils and preparation method thereof | |
| CN107497283A (en) | A kind of big air speed Fe-series desulfurizing agent and preparation method and application | |
| CN102961959B (en) | Fine desulfurization agent of zinc oxide as well as preparation and application methods thereof | |
| DE1911030A1 (en) | Process for the dimerization of lefins | |
| CN101733124B (en) | Catalyst for fixed bed hydrogenation for continuous production of fatty alcohol, preparation method thereof and application thereof | |
| CN104549371B (en) | Catalyst of preparing isophorone using condensation of acetone and preparation method thereof | |
| EP1374993A2 (en) | Solid acid catalyst containing platinum group metal component and method for preparation thereof | |
| CN1186117C (en) | Low cost sulfur transformation resistant deoxidizing agent | |
| CN104190424A (en) | Catalyst for preparing methyl ethyl ketone by dehydrogenation of sec-butyl alcohol and preparation method of catalyst | |
| CN101301624B (en) | Al2O3-HZSM-5 compound solid acid catalyst prepared by chemical precipitation method | |
| CN101230289B (en) | Hydrogenation catalyst 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 | ||
| AD01 | Patent right deemed abandoned | ||
| C20 | Patent right or utility model deemed to be abandoned or is abandoned |