CN107224975A - Preparation method without the methanation of carbon monoxide catalyst of reduction activation - Google Patents
Preparation method without the methanation of carbon monoxide catalyst of reduction activation Download PDFInfo
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- CN107224975A CN107224975A CN201610173030.1A CN201610173030A CN107224975A CN 107224975 A CN107224975 A CN 107224975A CN 201610173030 A CN201610173030 A CN 201610173030A CN 107224975 A CN107224975 A CN 107224975A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J37/00—Processes, in general, for preparing catalysts; Processes, in general, for activation of catalysts
- B01J37/0009—Use of binding agents; Moulding; Pressing; Powdering; Granulating; Addition of materials ameliorating the mechanical properties of the product catalyst
- B01J37/0018—Addition of a binding agent or of material, later completely removed among others as result of heat treatment, leaching or washing,(e.g. forming of pores; protective layer, desintegrating by heat)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/755—Nickel
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/78—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with alkali- or alkaline earth metals
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with rare earths or actinides
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C1/00—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon
- C07C1/02—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon
- C07C1/04—Preparation of hydrocarbons from one or more compounds, none of them being a hydrocarbon from oxides of a carbon from carbon monoxide with hydrogen
- C07C1/0425—Catalysts; their physical properties
- C07C1/043—Catalysts; their physical properties characterised by the composition
- C07C1/0435—Catalysts; their physical properties characterised by the composition containing a metal of group 8 or a compound thereof
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/74—Iron group metals
- C07C2523/755—Nickel
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2523/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00
- C07C2523/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper
- C07C2523/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36
- C07C2523/83—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group C07C2521/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups C07C2523/02 - C07C2523/36 with rare earths or actinides
Abstract
The invention discloses the preparation method of the methanation of carbon monoxide catalyst without reduction activation, belong to catalysis technical field, the preparation method without the methanation of carbon monoxide catalyst of reduction activation, it is characterised in that Al will be contained3+,Ni2+Mixed nitrate solution be added to the water with alkaline precipitating agent cocurrent, and maintain pH value of solution=7 ~ 8；After N-process terminates, by aging, washing, filtering, drying, it is calcined in an inert atmosphere, obtained product and aliphatic hydroxyl acid are dispersed in volatile organic solvent, then dries, are calcined removing organic solvent under anaerobic, remaining solid is beaten into sheetmolding.
Description
Technical field
The invention belongs to catalysis technical field, and in particular to a kind of the methanation of carbon monoxide catalyst without reduction activation
Preparation method.
Background technology
Natural gas is a kind of energy of high-efficiency cleaning.At present, natural gas proportion in world's primary energy is
24.3%.Due to China's natural gas resource and the deficiency of exploitation amount, natural gas proportion in primary energy is only 4% or so,
Far below world average level.In recent years, with " Shan gas is gone to the capital ", " the national level fuel gas transmission engineering such as West-east Gas it is successive
Build up and come into operation, the demand of natural gas is in explosive growth, and the insufficiency of supply-demand of natural gas is also increasing, and China's coal
Charcoal resource relative abundance, is an effective way for solving natural gas imbalance between supply and demand, coal to SNG by coal based synthetic gas SNG
The new bright spot of investment of coal chemical technology of the mesh into China after coal liquifaction.
Methanation catalyst is generally with Al2O3For carrier, methanation catalyst is with high-purity as disclosed in patent US 3933833
γ-Al2O3For carrier, load active component nickel oxide and cobalt oxide.Methanation catalyst disclosed in patent CN 1043639A with
Al2O3For carrier, nickel is active component, and with rare earth metal or alkaline-earth metal, or alkaline-earth metal is co-catalyst.Patent CN
Methanation catalyst disclosed in 1043449A, nickel is active component, and rare earth metal and magnesium are co-catalyst, and remaining is aluminum oxide.
These methanation catalysts are using aluminum oxide as carrier, and active component is nickel.The general type that nickel is present is Ni2+, and with methane
The nickel for changing performance is metal simple-substance nickel.Therefore, before methanation reaction starts, reduction treatment is carried out to catalyst.
Chinese patent CN 1054269 discloses a kind of methanation catalyst preparation method of producing synthesis gas from coal, catalyst
Active component is nickel, Al2O3For carrier, catalyst is using preceding needing to use 10% H2/N2Program is warming up to 250 DEG C ~ 350 DEG C reduction
2h~6h。
Reduction activation process before nickel-base catalyst use needs to consume H2, and usually need to take a long time, give
Catalyst brings additional energy and inconvenience using process.
The content of the invention
The invention provides a kind of preparation method of the methanation of carbon monoxide catalyst without reduction activation.Utilize the party
Method can obtained methanation catalyst there is good catalytic activity and stability.
The present invention's is mainly characterized by by introducing aliphatic hydroxyl acid in catalyst preparation process, under an inert atmosphere
After burning, aliphatic hydroxyl acid, which decomposes the gas produced, has pore-creating effect, and NiO can be reduced for metal by decomposing obtained CO
Ni。
The technical scheme is that：Al will be contained3+,Ni2+Mixed nitrate solution and alkaline precipitating agent cocurrent add
Into water, and maintain pH value of solution=7 ~ 8；After N-process terminates, by aging, washing, filtering, drying, roast in an inert atmosphere
Burn, obtained product and aliphatic hydroxyl acid are dispersed in volatile organic solvent, then dry, under anaerobic
Roasting removes organic solvent, and remaining solid is beaten into sheetmolding.
Usually, the amount of material Al, Ni total in nitrate solution of the present invention is 1, wherein, Al constituent contents are
30% ~ 80%, Ni constituent content are 20% ~ 50%.
Also contain Mg in mixed nitrate solution of the present invention2+、La3+、Zr4+、Ce3+And Ga3+In one kind or many
Kind, the ratio between the amount of its total material and the amount of Al elemental substances are 0.01 ~ 0.2.
Alkaline precipitating agent used of the invention is Na2CO3、NaHCO3、K2CO3Or KHCO3The aqueous solution.
Hydroxyl polycarboxylic acid of the present invention is citric acid or tartaric acid.
The amount ratio of hydroxyl polycarboxylic acid's usage amount of the present invention and Al elemental substances in product is 0.01 ~ 0.2.
Volatile organic solvent of the present invention is ethanol, acetone, ether.
Sintering temperature is 350 DEG C ~ 700 DEG C under inert atmosphere of the present invention.
Sintering temperature is 200 DEG C ~ 400 DEG C under the oxygen free condition of the present invention for removing organic solvent.
It is good using the methanation catalyst catalytic activity and stability prepared by the present invention.
Embodiment
With reference to embodiment, the present invention is described in detail：
Embodiment 1
Weigh 302.0g Al (NO3)3·9H2O、87.8g Ni(NO3)2·3H2O, which is dissolved in the aqueous solution, to be made into total salt concentration and is
1mol/L solution, by mixed nitrate solution and 1mol/L Na2CO3Solution is preheated to after 60 DEG C, and cocurrent is added to 60 DEG C and gone
In ionized water and maintain pH=7 ~ 8；After aging 30min, sediment is washed with deionized water, filter cake is obtained after filtering, is done
It is dry, 350 DEG C of roastings；15.0 citric acids are weighed, and are together dispersed in 3L ethanol with filter cake, after stirring at normal temperature 30min, temperature
Degree rises to 60 DEG C and reclaims ethanol distillation, and obtained solid is dried, and 200 DEG C of roasting 2h, afterwards, are down to room under anaerobic
Temperature, sheetmolding is beaten by obtained solid, obtains catalyst I.
Embodiment 2
Weigh 150.0g Al (NO3)3·9H2O、43.9g Ni(NO3)2·3H2O、5.0g Mg(NO3)2·6H2O is dissolved in the aqueous solution
In be made into total salt concentration for 1mol/L solution, by mixed nitrate solution and 1mol/L NaHCO3Solution is preheated to 60 DEG C
Afterwards, cocurrent is added in 60 DEG C of deionized waters and maintains pH=7 ~ 8；After aging 30min, sediment is washed with deionized water
Wash, filter cake is obtained after filtering, dry, 700 DEG C of roastings；15.0 tartaric acid are weighed, and are together dispersed in 3L acetone with filter cake,
After stirring at normal temperature 30min, temperature rises to 60 DEG C and is distilled to recover acetone, and obtained solid is dried, under anaerobic 400 DEG C of roastings
2h is burnt, afterwards, room temperature is down to, obtained solid is beaten into sheetmolding, catalyst II is obtained.
Embodiment 3
Weigh 302.0g Al (NO3)3·9H2O、87.8g Ni(NO3)2·3H2O、5.0g Ce(NO3)3·6H2O is dissolved in the aqueous solution
In be made into total salt concentration for 1mol/L solution, by mixed nitrate solution and 1mol/L K2CO3Solution is preheated to after 60 DEG C,
Cocurrent is added in 60 DEG C of deionized waters and maintains pH=7 ~ 8；After aging 30min, sediment is washed with deionized water,
Filter cake is obtained after filtering, is dried, 700 DEG C of roastings；15.0 citric acids are weighed, and are together dispersed in 3L ether with filter cake, often
After temperature stirring 30min, temperature rises to 60 DEG C and is distilled to recover ether, and obtained solid is dried, under anaerobic 300 DEG C of roastings
2h, afterwards, temperature are down to 40 DEG C, by nitrogen switch to oxygen volumn concentration be 2.5% oxygen nitrogen and maintain 30min, after
Room temperature is down to, obtained solid is beaten into sheetmolding, catalyst III is obtained.
Embodiment 4
Weigh 302.0g Al (NO3)3·9H2O、87.8g Ni(NO3)2·3H2O、5.0g La(NO3)3·6H2O is dissolved in the aqueous solution
In be made into total salt concentration for 1mol/L solution, by mixed nitrate solution and 1mol/L KHO3Solution is preheated to after 60 DEG C,
Cocurrent is added in 60 DEG C of deionized waters and maintains pH=7 ~ 8；After aging 30min, sediment is washed with deionized water,
Filter cake is obtained after filtering, is dried, 700 DEG C of roastings；15.0 citric acids are weighed, and are together dispersed in 3L ethanol with filter cake, often
After temperature stirring 30min, temperature rises to 60 DEG C and reclaims ethanol distillation, and obtained solid is dried, under anaerobic 350 DEG C of roastings
2h, afterwards, is down to room temperature, and obtained solid is beaten into sheetmolding, obtains catalyst IV.
Embodiment 5
Weigh 302.0g Al (NO3)3·9H2O、87.8g Ni(NO3)2·3H2O、5.0g Zr(NO3)3·5H2O is dissolved in the aqueous solution
In be made into total salt concentration for 1mol/L solution, by mixed nitrate solution and 1mol/L Na2CO3Solution is preheated to after 60 DEG C,
Cocurrent is added in 60 DEG C of deionized waters and maintains pH=7 ~ 8；After aging 30min, sediment is washed with deionized water,
Filter cake is obtained after filtering, is dried, 700 DEG C of roastings；15.0 citric acids are weighed, and are together dispersed in 3L ethanol with filter cake, often
After temperature stirring 30min, temperature rises to 60 DEG C and reclaims ethanol distillation, and obtained solid is dried, under anaerobic 350 DEG C of roastings
2h, afterwards, temperature are down to 40 DEG C, and nitrogen is switched into oxygen nitrogen that oxygen volumn concentration is 1% and 30min is maintained, rear drop
To room temperature, obtained solid is beaten into sheetmolding, catalyst V is obtained.
Methanation catalyst I, II, III, IV, V is seated in fixed-bed tube reactor respectively, and reaction condition is：Pressure
3.0MPa, gas composition H239.12, CO 7.18, CO21.30, N2It is 5000 ~ 30000h for Balance Air, gas space velocity-1,
After 600 DEG C of reaction 500h, the activity of catalyst keeps good, wherein CO conversion ratios close to 100%, methane selectively close to 100%,
The catalytic mechanical intensity removed is still very high, and the surface of catalyst does not have carbon distribution.
| Catalyst | Air speed | CO total conversions（%） | Methane selectively (%) |
| Ⅰ | 10000 | 99.3 | 99.5 |
| Ⅱ | 10000 | 99.5 | 99.0 |
| Ⅲ | 10000 | 99.8 | 98.9 |
| Ⅳ | 10000 | 99.1 | 99.1 |
| Ⅴ | 10000 | 99.7 | 99.3 |
。
Claims (10)
1. the preparation method of a kind of the methanation of carbon monoxide catalyst without reduction activation, it is characterised in that Al will be contained3+,
Ni2+Mixed nitrate solution be added to the water with alkaline precipitating agent cocurrent, and maintain pH value of solution=7 ~ 8；N-process terminates
Afterwards, by aging, washing, filtering, drying, be calcined in an inert atmosphere, by obtained product and uniform point of aliphatic hydroxyl acid
Be dispersed in volatile organic solvent, then dry, under anaerobic roasting remove organic solvent, by remaining solid beat piece into
Type.
2. the preparation method of catalyst according to claim 1, it is characterised in that Al, Ni are total in described nitrate solution
The amount of material is 1, wherein, Al constituent contents are that 30% ~ 80%, Ni constituent contents are 20% ~ 50%.
3. the preparation method of catalyst according to claim 1, it is characterised in that also contain in described mixed nitrate solution
There is Mg2+、La3+、Zr4+、Ce3+And Ga3+In one or more, the ratio between the amount of its total material and the amount of Al elemental substances are
0.01~0.2。
4. the preparation method of catalyst according to claim 1, its feature is Na in alkaline precipitating agent used2CO3、NaHCO3、
K2CO3Or KHCO3The aqueous solution.
5. the preparation method of catalyst according to claim 1, it is characterised in that described is hydroxyl for aliphatic hydroxyl acid
Polybasic carboxylic acid.
6. the preparation method of catalyst according to claim 5, it is characterised in that described hydroxyl polycarboxylic acid is citric acid
Or tartaric acid.
7. the preparation method of catalyst according to claim 1,5 or 6, it is characterised in that hydroxyl polycarboxylic acid's usage amount and production
The amount ratio of Al elemental substances is 0.01 ~ 0.2 in thing.
8. the preparation method of catalyst according to claim 1, it is characterised in that volatile organic solvent be ethanol, acetone,
Ether.
9. the preparation method of catalyst according to claim 1, it is characterised in that under inert atmosphere sintering temperature be 350 DEG C ~
700℃。
10. the preparation method of catalyst according to claim 1, it is characterised in that remove and roasted under the oxygen free condition of organic solvent
It is 200 DEG C ~ 400 DEG C to burn temperature.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103480375A (en) * | 2013-09-29 | 2014-01-01 | 福州大学 | Carbon monoxide methanating catalyst and preparation method thereof |
| CN104275185A (en) * | 2013-07-12 | 2015-01-14 | 中国石油化工股份有限公司 | Preparation method of copper-based hydrogenation catalyst without reduction activation |
| CN105797785A (en) * | 2016-04-15 | 2016-07-27 | 西安向阳航天材料股份有限公司 | Pre-reduction type high-temperature methanation catalyst and preparation method thereof |
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2016
- 2016-03-24 CN CN201610173030.1A patent/CN107224975B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275185A (en) * | 2013-07-12 | 2015-01-14 | 中国石油化工股份有限公司 | Preparation method of copper-based hydrogenation catalyst without reduction activation |
| CN103480375A (en) * | 2013-09-29 | 2014-01-01 | 福州大学 | Carbon monoxide methanating catalyst and preparation method thereof |
| CN105797785A (en) * | 2016-04-15 | 2016-07-27 | 西安向阳航天材料股份有限公司 | Pre-reduction type high-temperature methanation catalyst and preparation method thereof |
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Address after: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee after: China Petroleum & Chemical Corp. Patentee after: SINOPEC NANJING CHEMICAL RESEARCH INSTITUTE Co.,Ltd. Address before: Liuhe District of Nanjing City, Jiangsu province 210048 geguan Road No. 699 Patentee before: China Petroleum & Chemical Corp. Patentee before: Nanhua Group Research Institute |