CN103801302A - Preparation method for catalyst containing copper and zinc - Google Patents
Preparation method for catalyst containing copper and zinc Download PDFInfo
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- CN103801302A CN103801302A CN201210443086.6A CN201210443086A CN103801302A CN 103801302 A CN103801302 A CN 103801302A CN 201210443086 A CN201210443086 A CN 201210443086A CN 103801302 A CN103801302 A CN 103801302A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
The invention discloses a preparation method for a catalyst containing copper and zinc. The method comprises the following steps: respectively preparing a precipitate containing a zinc compound and a precipitate containing an aluminum compound through carbonization; then mixing and aging the two precipitates and adding basic copper carbonate at the same time; and carrying out washing, filtering, drying, baking and pressed forming so as to obtain the catalyst containing copper and zinc. The catalyst prepared by using the method has a high specific area and uniform active particles, improves synergism between the two active components--copper and the cocatalyst zinc, enhances activity and thermal stability of the catalyst containing copper and zinc and prolongs the service life of the catalyst. The catalyst is applicable as a catalyst for synthesis of methanol.
Description
Technical field
The present invention relates to a kind of preparation method containing copper zinc catalyst, be specifically related to a kind of preparation method containing copper zinc catalyst for the synthesis of methyl alcohol with high activity, good thermal stability.
Background technology
Methyl alcohol is a kind of extremely important industrial chemicals, be widely used in organic synthesis, dyestuff, fuel, medicine, coating and national defense industry, its output is only second to synthetic ammonia and ethene, occupies third place in the world, methyl alcohol demand and the production capacity sustainable growth along with industrial development in recent years.
Industrial methyl alcohol is general with containing H
2, CO, CO
2synthesis gas under certain pressure, temperature and catalyst existence condition, produce.At present in the world generally adopt in, low-pressure vapor phase method synthesizing methanol, used catalyst is essentially the mixed oxide of copper, zinc, aluminium.CuO, ZnO, Al in catalst for synthesis of methanol
2o
3the effect of three components is variant, and CuO is main active component, ZnO and Al
2o
3for auxiliary agent.Method for preparing catalyst is generally the mixing subcarbonate of first using coprecipitation (comprise and flow, instead add, just adding coprecipitation) to generate copper zinc, and then in pulping process, add aluminium hydroxide, the slurry that generates through washing, dry, roasting, compression molding.The research that at present prepared by catalyst mainly concentrates on optimization and the improvement of preparation method and technique, improve catalyst activity by the ratio of change catalytic component, the size of crystal grain, size and the pore-size distribution of specific area, improve copper-based catalysts poor heat stability, selective low and short problem of life-span.Method for preparing catalyst difference, it is larger that the performance of gained catalyst can differ.
CN 1810357A adopts a traditional step coprecipitation to prepare catalst for synthesis of methanol.By the nitrate mixed solution of Cu, Zn, Al, Li and NaCO
3solution stream are titrated in the deionized water of a small amount of high-speed stirred, keep the pH of solution between 7 ~ 8 simultaneously, aging, suction filtration, washing, dry to obtain catalyst precarsor, and catalyst precarsor is dried, roasting obtains finished product.The method is to adopt a typical step coprecipitation to prepare catalyst for methanol, has added LiNO in preparation process
3.
CN 101574649A discloses a kind of preparation method of catalst for synthesis of methanol, step is that the aqueous solution of aluminum soluble salt is reacted with the mixed aqueous solution of alkali metal hydroxide-carbonate, generate a kind of transparent meta-aluminate aqueous solution, then itself and the copper that contains water-soluble high-molecular compound, the transparent aqueous solution of zinc salt are carried out to coprecipitation reaction, generate the mixing co-precipitation of a kind of copper, zinc, aluminium, then through washing, dry, granulation processing, roasting, play sheet moulding and can make a kind of highly active catalst for synthesis of methanol.
CN 1660490A discloses a kind of preparation method of catalst for synthesis of methanol, its preparation process is: coprecipitation is prepared and in methanol synthesis catalyst process, added a small amount of Surfactant OP, or fractional precipitation is prepared in methanol synthesis catalyst process and is added a small amount of Surfactant OP, makes a kind of catalst for synthesis of methanol.
CN 101219382A discloses a kind of copper-based catalysts and preparation method of synthesizing methanol.By water-soluble to Cu, Zn, Al soluble-salt, by anhydrous Na
2cO
3wiring solution-forming soluble in water; By Na
2cO
3solution heats, and adds the soluble-salt solution of Cu, Zn, and pH=7.0～8.2 are terminal, the aging copper zinc mother liquor that obtains; At Al (NO
3)
3in solution, add ammoniacal liquor, Na
2cO
3solution, K
2cO
3solution or NH
4hCO
3solution, pH value terminal is 8.0～11.0, aging aluminium emulsion; Boehmite or aluminium emulsion are joined in Cu, Zn masterbatch, and gained material washes with water without Na
+, filtration is drained, dries, and roasting, compression molding, pulverizes.
CN 1329938A, CN 101306369A, CN 101327431A, CN 101513615A adopt the preparation method of two steps and three step process catalst for synthesis of methanol, these methods have changed a traditional step and have prepared catalyst for methanol process, preparation process is generally divided into two steps or three steps are prepared sediment, then by coprecipitate mixing, washing, dry, roasting, moulding makes catalyst.
The catalst for synthesis of methanol method of above-mentioned patent Introduction is by adding new auxiliary agent (Li and surfactant), change the presoma of catalyst preparation process (step process changes two steps or three step process into) and change Al, carry out the structure of regulating catalyst, surface acid alkalescence, electronic property, to improve the activity of existing catalyst, selective or life-span, but improve catalst for synthesis of methanol the key active and life-span and be to increase the more even of the specific area of catalyst and active ingredient copper and the distribution of co-catalyst zinc, act synergistically stronger, above patent does not all relate to.
Summary of the invention
For above-mentioned deficiency of the prior art, the invention provides a kind of preparation method containing copper zinc catalyst.The specific surface area of catalyst of the method gained is higher, and active particle is even, improves active ingredient copper and co-catalyst zinc synergy, has improved the activity of Cu-contained catalyst and the service life of heat endurance and catalyst.This catalyst is as catalst for synthesis of methanol.
Catalyst granules prepared by the precipitation method is easy to inhomogeneous, active component adding mode different and can make the composite oxide of metal grain size difference forming, specific area to catalyst has considerable influence, and coordinative role between active component dispersiveness, active metal component is also had a significant impact.Inventor finds by a large amount of experiments, prepare catalst for synthesis of methanol by two step process processes, adopt respectively carbon dioxide and zinc solution, sodium metaaluminate co-precipitation to generate containing zinc coprecipitate slurries with containing aluminium coprecipitate slurries, both sediment slurries are mixed, when aging, add basic copper carbonate to prepare catalst for synthesis of methanol.Adopt carbon dioxide to generate sediment with zinc solution and sodium metaaluminate co-precipitation respectively, increase the specific area of catalyst, when aging, add basic copper carbonate, carry out roasting after aging, can prevent from precipitating time, easily occur the reunion of copper particle.After roasting simultaneously, CuO is dispersed on ZnO, CuO grain refinement, increases coordinative role between main metal component copper and promoter metal component zinc, improves the dispersiveness of active metal component copper, allow active metal in catalyst play one's part to the full, improve activity and the heat endurance of catalyst.
The preparation method of Cu-contained catalyst of the present invention, comprising:
(1), in the soluble-salt solution A of Zn, pass into CO
2gas, reaction generates containing sediment slurries I;
(2), in sodium aluminate solution B, pass into CO
2gas, generates containing sediment slurries II,
(3), by step (1) gained containing the mixing containing sediment slurries II of sediment slurries I and step (2) gained, under agitation aging, when aging, add basic copper carbonate;
(4), the material that obtains of step (3) through washing, filter, dry, roasting, compression molding, obtains containing copper zinc catalyst.
Described in step (1), the soluble-salt of Zn can be nitrate and/or acetate.The concentration of the soluble-salt solution A of described Zn is 0.5～5.0mol/L, is preferably 1.0～3.0mol/L.Pass into the CO in the soluble-salt solution of Zn
2the total amount of gas and zinc salt mol ratio are 2～7, are preferably 3～5.
The concentration of sodium aluminate solution B described in step (2) is 1.0～6.0mol/L, is preferably 2.0～4.0mol/L.Pass into CO in sodium aluminate solution
2in the total amount of gas with sodium metaaluminate with Al
2o
3the mol ratio of meter is 2～8, is preferably 3～6.
In step (3), aging temperature is 40～90 ℃, is preferably 50～80 ℃.When aging, the control of pH value is 7.0 ~ 12.0, is preferably 7.5 ~ 11.0.Ageing time is 0.5 ~ 5.0 hour, is preferably 1.0 ~ 3.0 hours.
Plastic process CO used described in step (1) and step (2)
2volumetric concentration 20v%～the 99v% of gas, is preferably 40v%～95v%.
Plastic process described in step (1) and step (2), reaction temperature is 30～90 ℃, is preferably 40～80 ℃.When plastic, the control of pH value is 6.0 ~ 11.0, is preferably 7.0 ~ 10.0.Gelation time is 0.2 ~ 4.0 hour, is preferably 0.5 ~ 3.0 hour.
In step (3) gained material, copper/zinc mol ratio is 0.1～10.0, is preferably 0.2～5.0, and (copper+zinc)/al mole ratio is 0.1～10.0, is preferably 3.0～8.0.
The described washing of step (4) is controlled at 30～90 ℃ by water purification temperature, is preferably 40～70 ℃.Filter cake dehydrates under 50 ~ 150 ℃ of conditions, and preferably 60 ~ 120 ℃ of baking temperatures, 1 ~ 24 hour drying time, are preferably 2 ~ 16 hours drying time.300～360 ℃ of roastings 1 ~ 16 hour, be preferably 2 ~ 12 hours.
Cu-contained catalyst of the present invention, take the weight of catalyst as benchmark, the composition of catalyst comprises, take mass fraction: CuO as 20%～75%; ZnO is 15%～50%; Al
2o
3be 5%～30%, being preferably CuO is 30%～60%; ZnO is 20%～40%; Al
2o
3be 6%～30%.
Than method of the prior art, adopt the catalyst of the prepared synthesizing methanol of method of the present invention to there is higher activity, the feature of Heat stability is good.
The specific embodiment
Further illustrate the solution of the present invention and effect below by embodiment, v% is volume fraction.
Embodiment 1
In dissolving tank 1, add 500mL water, add 105gZn (NO
3)
26H
2o dissolves, and wiring solution-forming A, is elevated to 65 ℃ by solution A temperature, in solution A, passes into the CO that concentration is 90v%
2, when plastic, the control of the pH value of slurries is 7.5 ± 0.2, reaction time 0.5h generates containing sediment slurries I.In dissolving tank 2, add 500mL water, then add 34 grams of dissolvings of sodium metaaluminate, wiring solution-forming B, is elevated to 65 ℃ by solution B temperature, passes into solution B the CO that concentration is 90v%
2, when plastic, the control of the pH value of slurries is 7.8 ± 0.2, reaction time 0.5h generates containing sediment slurries II.Pass into CO in solution A
2the total amount of gas and the mol ratio of zinc salt are 3.5, pass into CO in solution B
2al in total amount and the solution B of gas
2o
3mol ratio is 4.0.Two kinds are mixed containing sediment slurries, in the situation of stirring, start agingly, add basic copper carbonate (Cu
2(OH)
2cO
3) 132 grams, when aging, pH is 8.0 ± 0.2, temperature is 70 ℃, aging 1.5 hours, by after material filtering, with water purification washing 3 times, filter cake is 90 ℃ of 350 ℃ of roastings after dry 8 hours 6 hours, the material after roasting add appropriate graphite and hydraulic pressure in blocks, compressing tablet obtains final catalyst A.
The composition of catalyst A, in mass fraction, as follows: CuO is 51%; ZnO is 38%; Al
2o
3be 11%.The character of catalyst: specific area is 158m
2/ g, pore volume is 0.382cm
3/ g.
Embodiment 2
In dissolving tank 1, add 250mL water, add 87gZn (NO
3)
26H
2o dissolves, and wiring solution-forming A, is elevated to 60 ℃ by solution A temperature, in solution A, passes into the CO that concentration is 95v%
2, when plastic, the control of the pH value of slurries is 7.8 ± 0.2, reaction time 0.5h generates containing sediment slurries I.In dissolving tank 2, add 300mL water, then add 48 grams of dissolvings of sodium metaaluminate, wiring solution-forming B, is elevated to 65 ℃ by solution B temperature, passes into solution B the CO that concentration is 95v%
2, when plastic, the control of the pH value of slurries is 7.8 ± 0.2, reaction time 0.5h generates containing sediment slurries II.Pass into CO in solution A
2the total amount of gas and the mol ratio of zinc salt are 3.8, pass into CO in solution B
2al in total amount and the solution B of gas
2o
3mol ratio is 4.4.Two kinds are mixed containing sediment slurries, in the situation of stirring, start agingly, add basic copper carbonate (Cu
2(OH)
2cO
3) 151 grams, when aging, pH is 8.5 ± 0.2, temperature is 75 ℃, aging 2 hours, by after material filtering, with water purification washing 2 times, filter cake is 120 ℃ of 330 ℃ of roastings after dry 8 hours 7 hours, the material after roasting add appropriate graphite and hydraulic pressure in blocks, compressing tablet obtains final catalyst B.
The composition of catalyst B, in mass fraction, as follows: CuO is 54%; ZnO is 33%; Al
2o
3be 13%.The character of catalyst: specific area is 147m
2/ g, pore volume is 0.371cm
3/ g.
Embodiment 3
In dissolving tank 1, add 400mL water, add 78gZn (NO
3)
26H
2o dissolves, and wiring solution-forming A, is elevated to 65 ℃ by solution A temperature, in solution A, passes into the CO that concentration is 88v%
2, when plastic, the control of the pH value of slurries is 8.0 ± 0.2, reaction time 0.5h generates containing sediment slurries I.In dissolving tank 2, add 400mL water, then add 44 grams of dissolvings of sodium metaaluminate, wiring solution-forming B, is elevated to 55 ℃ by solution B temperature, passes into solution B the CO that concentration is 90v%
2, when plastic, the control of the pH value of slurries is 7.6 ± 0.2, reaction time 0.5h generates containing sediment slurries II.Pass into CO in solution A
2the total amount of gas and the mol ratio of zinc salt are 2.8, pass into CO in solution B
2al in total amount and the solution B of gas
2o
3mol ratio is 3.5.Two kinds are mixed containing sediment slurries, in the situation of stirring, start agingly, add basic copper carbonate (Cu
2(OH)
2cO
3) 162 grams, when aging, pH is 7.8 ± 0.2, temperature is 72 ℃, aging 2 hours, by after material filtering, with water purification washing 3 times, filter cake is 90 ℃ of 300 ℃ of roastings after dry 8 hours 8 hours, the material after roasting add appropriate graphite and hydraulic pressure in blocks, compressing tablet obtains final catalyst C.
The composition of catalyst C, in mass fraction, as follows: CuO is 56%; ZnO is 32%; Al
2o
3be 12%.The character of catalyst: specific area is 141m
2/ g, pore volume is 0.357cm
3/ g.
Embodiment 4
In dissolving tank 1, add 500mL water, add 98gZn (NO
3)
26H
2o dissolves, and wiring solution-forming A, is elevated to 70 ℃ by solution A temperature, in solution A, passes into the CO that concentration is 95v%
2, when plastic, the control of the pH value of slurries is 8.2 ± 0.2, reaction time 0.5h generates containing sediment slurries I.In dissolving tank 2, add 500mL water, then add 52 grams of dissolvings of sodium metaaluminate, wiring solution-forming B, is elevated to 75 ℃ by solution B temperature, passes into solution B the CO that concentration concentration is 95v%
2, when plastic, the control of the pH value of slurries is 7.6 ± 0.2, reaction time 0.5h generates containing sediment slurries II.Pass into CO in solution A
2the total amount of gas and the mol ratio of zinc salt are 3.8, pass into CO in solution B
2al in total amount and the solution B of gas
2o
3mol ratio is 3.0.Two kinds are mixed containing sediment slurries, in the situation of stirring, start agingly, add basic copper carbonate (Cu
2(OH)
2cO
3) 125 grams, when aging, pH is 8.2 ± 0.2, temperature is 80 ℃, aging 3 hours, by after material filtering, with water purification washing 3 times, filter cake is 90 ℃ of 350 ℃ of roastings after dry 8 hours 4 hours, the material after roasting add appropriate graphite and hydraulic pressure in blocks, compressing tablet obtains final catalyst D.
The composition of catalyst D, in mass fraction, as follows: CuO is 50%; ZnO is 36%; Al
2o
3be 14%.The character of catalyst: specific area is 185m
2/ g, pore volume is 0.399cm
3/ g.
Comparative example 1
The disclosed method for preparing catalyst of CN101219382A, preparation forms identical reference agent E with the catalyst of embodiment 1.
(1). get 188gCu (NO
3)
2, 105gZn (NO
3)
2be dissolved in 800mL deionized water, be uniformly mixed.
(2). get 0.5molL
-1na (CO
3)
2solution 220mL is placed in 500mL beaker, is heated to 65 ℃, under agitation the mixed liquor of step (1) gained is added to Na (CO with the speed of 25mL/min
3)
2in solution, after feeding in raw material, control both pH=8.2, Cu, Zn masterbatch aging 1h at 82 ℃;
(3). get Al (NO
3)
39H
2o72g is dissolved in 400mL deionized water, and 4mL ammoniacal liquor is added to Al (NO
3)
3in solution, stir aging 1h;
(4). the emulsion of aging aluminium is joined in aging Cu, Zn masterbatch, stir after 40min, gained material spends ionized water and washs without Na
+;
(5). filter drain, filter cake is dried 2h at 110 ℃, pulverize, at 350 ℃ at Muffle furnace roasting 3h;
(6). finally (5) gained mixed oxide compressing tablet, pulverize for 16-40 order for subsequent use.Gained catalyst sample E.
The composition of catalyst E, in mass fraction, as follows: CuO is 51%; ZnO is 38%; Al
2o
3be 11%.。The character of catalyst: specific area is 93m
2/ g, pore volume is 0.125cm
3/ g.
Comparative example 2
Press the disclosed method for preparing catalyst of CN101574649A, preparation forms identical reference agent F with the catalyst of embodiment 1.
Take Al (NO
3)
39H
2o72g, adds deionized water 200mL stirring and dissolving, takes NaOH40g, NaCO
350g is total in molten and 500mL deionized water.Under the condition of 20 ℃～50 ℃, by NaOH-NaCO
350g solution slowly adds Al (NO
3)
3, control terminal PH>=12, obtain a kind of water white sodium aluminate solution, for subsequent use.
Take Cu (NO
3)
23H
2o188g, Zn (NO
3)
26H
2o105g is dissolved in 250mL deionized water; Take 1g polyvinyl alcohol, be dissolved in 250mL deionized water.Then these two kinds of solution are mixed, make a kind of blue clear solution.
By the also stream reaction under the condition of 40 ℃～90 ℃ of the solution containing sodium metaaluminate and copper nitrate-zinc nitrate, controlling ph value of reaction is 6.5～8.5.React complete continuation stirs 60 minutes under reaction temperature, material is through washing, then in baking oven, be dried 4 hours in 100 ℃～150 ℃, roasting 4 hours at 350 ℃ in Muffle furnace, after cold going, add 2% deflocculated graphite and 3% deionized water, after being mixed, play sheet moulding, gained catalyst sample F.
The composition of catalyst F, in mass fraction, as follows: CuO is 51%; ZnO is 38%; Al
2o
3be 11%.The character of catalyst: specific area is 103m
2/ g, pore volume is 0.129cm
3/ g.
Embodiment 5
Catalst for synthesis of methanol is pulverized to the order for 16-40, adopt before use low-concentration hydrogen (H
2/ N
2=3/97) hydrogen nitrogen mixed gas reduction 16～20h, the highest reduction temperature is 235 ℃.On miniature fixed-bed reactor, carry out the activity rating of catalyst.Loaded catalyst is 5mL, and unstripped gas consists of CO/H
2/ CO
2/ N
2=12/70/3/15(volume ratio), reaction pressure is 5.0MPa, air speed is 10000h
-1, reaction temperature is 250 ℃, measures CO and CO
2conversion ratio be catalyst initial activity.Then by catalyst in synthetic atmosphere by 450 ℃ of heat treatment 5h, then drop to 250 ℃ and measure CO and CO
2conversion ratio be active after heat treatment, i.e. heat resistance.Product gas chromatograph analysis, the space-time yield gmL of methanol
-1h
-1be the milliliter number of every milliliter of product methyl alcohol per hour, the results are shown in Table 1.Find out from result of the test, methanol synthesis catalyst of the present invention has the selective of high activity, heat resistance and excellence.
The evaluation of table 1 catalyst activity and heat resistance experimental result
| Catalyst | Initial activity (%) | Initial activity (%) | Heat-resisting rear activity (%) | Heat-resisting rear activity (%) | Methyl alcohol space-time yield (gmL -1·h -1） | Methyl alcohol selective (%) |
| CO | CO 2 | CO | CO 2 | |||
| A | 97.78 | 86.18 | 87.91 | 78.31 | 3.41 | 97.54 |
| B | 96.26 | 86.37 | 88.51 | 79.23 | 3.32 | 96.95 |
| C | 96.69 | 87.29 | 87.47 | 77.28 | 3.47 | 96.18 |
| D | 95.98 | 86.17 | 86.43 | 79.54 | 3.25 | 97.01 |
| E | 75.86 | 68.45 | 69.21 | 59.12 | 1.91 | 82.24 |
| F | 74.74 | 71.59 | 65.49 | 57.34 | 1.85 | 79.31 |
Claims (14)
1. containing a preparation method for copper zinc catalyst, comprising:
(1), in the soluble-salt solution A of Zn, pass into CO
2gas, reaction generates containing sediment slurries I;
(2), in sodium aluminate solution B, pass into CO
2gas, generates containing sediment slurry II;
(3), by step (1) gained containing the mixing containing sediment slurries II of sediment slurries I and step (2) gained, under agitation aging, when aging, add basic copper carbonate;
(4), the material that obtains of step (3) through washing, filter, dry, roasting, compression molding, obtains Cu-contained catalyst.
2. the soluble-salt that in accordance with the method for claim 1, it is characterized in that Zn described in step (1) is nitrate and/or acetate; The concentration of the soluble-salt solution A of described Zn is 0.5～5.0mol/L; The concentration of sodium aluminate solution B described in step (2) is 1.0～6.0mol/L.
3. in accordance with the method for claim 1, it is characterized in that the concentration of the soluble-salt of Zn in step (1) solution A is 1.0～3.0mol/L, in solution B, sodium metaaluminate concentration is 2.0～4.0mol/L.
4. in accordance with the method for claim 1, it is characterized in that in step (1), pass into the CO in the soluble-salt solution of Zn
2the total amount of gas and zinc salt mol ratio are 2～7.
5. in accordance with the method for claim 1, it is characterized in that, in step (2), passing into CO in sodium aluminate solution
2the total amount of gas and sodium metaaluminate are with Al
2o
3the mol ratio of meter is 2～8.
6. in accordance with the method for claim 1, it is characterized in that in step (3), aging temperature is 40～90 ℃, when aging, the control of pH value is 7.0 ~ 12.0, and ageing time is 0.5 ~ 5.0 hour.
7. in accordance with the method for claim 1, it is characterized in that, in step (3), aging temperature is 50～80 ℃; When aging, the control of pH value is 7.5 ~ 11.0, and ageing time is 1.0 ~ 3.0 hours.
8. in accordance with the method for claim 1, it is characterized in that plastic process CO used described in step (1) and step (2)
2volumetric concentration 20v%～the 99v% of gas.
9. in accordance with the method for claim 1, it is characterized in that plastic process described in step (1) and step (2), reaction temperature is 30～90 ℃, and when plastic, the control of pH value is 6.0 ~ 11.0, and gelation time is 0.2 ~ 4.0 hour.
10. in accordance with the method for claim 1, it is characterized in that plastic process described in step (1) and step (2), reaction temperature is 40～80 ℃, and when plastic, the control of pH value is 7.0 ~ 10.0, and gelation time is 0.5 ~ 3.0 hour.
11. in accordance with the method for claim 1, it is characterized in that in step (3) gained material, copper/zinc mol ratio is 0.1～10.0, and (copper+zinc)/al mole ratio is 0.1～10.0.
12. in accordance with the method for claim 1, it is characterized in that in step (3) gained material, copper/zinc mol ratio is 0.2～5.0, and (copper+zinc)/al mole ratio is 3.0～8.0.
13. in accordance with the method for claim 1, it is characterized in that described being dried of step (4) is to be dried 1 ~ 24 hour at 50 ~ 150 ℃, and described roasting is 300～360 ℃ of roastings 1 ~ 16 hour.
14. in accordance with the method for claim 1, it is characterized in that described Cu-contained catalyst, and take the weight of catalyst as benchmark, the composition of catalyst comprises, take mass fraction: CuO as 20%～75%; ZnO is 15%～50%; Al
2o
3be 5%～30%.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109289854A (en) * | 2018-11-01 | 2019-02-01 | 四川天科技股份有限公司 | A kind of high stability high intensity catalst for synthesis of methanol and preparation method thereof |
| CN112023962A (en) * | 2019-06-03 | 2020-12-04 | 国家能源投资集团有限责任公司 | Catalyst for methanol synthesis, preparation method thereof and method for synthesizing methanol |
| CN115555028A (en) * | 2022-09-30 | 2023-01-03 | 四川蜀泰化工科技有限公司 | High-activity, high-selectivity and high-stability methanol synthesis catalyst and preparation method thereof |
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| CN1398787A (en) * | 2002-05-31 | 2003-02-26 | 中国石油化工集团公司 | Prepn of gamma-alumina |
| US20090048355A1 (en) * | 2005-05-03 | 2009-02-19 | Sud-Chemie Ag | PRODUCTION OF Cu/Zn/Al CATALYSTS VIA THE FORMATE ROUTE |
| CN101574649A (en) * | 2009-05-25 | 2009-11-11 | 来安县迅能催化剂有限公司 | Methanol catalyst preparation method |
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| CN112023962A (en) * | 2019-06-03 | 2020-12-04 | 国家能源投资集团有限责任公司 | Catalyst for methanol synthesis, preparation method thereof and method for synthesizing methanol |
| CN112023962B (en) * | 2019-06-03 | 2023-10-03 | 国家能源投资集团有限责任公司 | Catalyst for methanol synthesis, preparation method thereof and method for synthesizing methanol |
| CN115555028A (en) * | 2022-09-30 | 2023-01-03 | 四川蜀泰化工科技有限公司 | High-activity, high-selectivity and high-stability methanol synthesis catalyst and preparation method thereof |
| CN115555028B (en) * | 2022-09-30 | 2023-09-05 | 四川蜀泰化工科技有限公司 | Methanol synthesis catalyst and preparation method thereof |
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