CN101402042B - Catalyst for synthesis of dimethyl ether with synthesis gas one-step method, production method and uses thereof - Google Patents
Catalyst for synthesis of dimethyl ether with synthesis gas one-step method, production method and uses thereof Download PDFInfo
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- CN101402042B CN101402042B CN2008100465925A CN200810046592A CN101402042B CN 101402042 B CN101402042 B CN 101402042B CN 2008100465925 A CN2008100465925 A CN 2008100465925A CN 200810046592 A CN200810046592 A CN 200810046592A CN 101402042 B CN101402042 B CN 101402042B
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- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 title claims abstract description 86
- 239000003054 catalyst Substances 0.000 title claims abstract description 62
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 60
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 60
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 title description 2
- 238000000975 co-precipitation Methods 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims description 25
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical group [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 16
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 12
- 230000032683 aging Effects 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 10
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 8
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- 239000003153 chemical reaction reagent Substances 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Substances [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 230000001376 precipitating effect Effects 0.000 claims description 6
- 150000003839 salts Chemical class 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 229910052749 magnesium Inorganic materials 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 3
- 238000006297 dehydration reaction Methods 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- 206010001497 Agitation Diseases 0.000 claims description 2
- 229910002651 NO3 Inorganic materials 0.000 claims description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 2
- 238000013019 agitation Methods 0.000 claims description 2
- 229940072033 potash Drugs 0.000 claims description 2
- 235000015320 potassium carbonate Nutrition 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 abstract description 8
- 239000012752 auxiliary agent Substances 0.000 abstract description 4
- 239000001569 carbon dioxide Substances 0.000 abstract description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 abstract description 4
- 229910003158 γ-Al2O3 Inorganic materials 0.000 abstract 2
- 230000008021 deposition Effects 0.000 abstract 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 32
- 238000002156 mixing Methods 0.000 description 12
- 230000000694 effects Effects 0.000 description 10
- 239000012266 salt solution Substances 0.000 description 10
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 8
- 239000000376 reactant Substances 0.000 description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- 229910002091 carbon monoxide Inorganic materials 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 238000001354 calcination Methods 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000011701 zinc Substances 0.000 description 5
- 229960004643 cupric oxide Drugs 0.000 description 4
- 239000011787 zinc oxide Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- WTEOIRVLGSZEPR-UHFFFAOYSA-N boron trifluoride Chemical compound FB(F)F WTEOIRVLGSZEPR-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000003835 carbonate co-precipitation Methods 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- AMWRITDGCCNYAT-UHFFFAOYSA-L hydroxy(oxo)manganese;manganese Chemical compound [Mn].O[Mn]=O.O[Mn]=O AMWRITDGCCNYAT-UHFFFAOYSA-L 0.000 description 2
- 239000002808 molecular sieve Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- 235000011181 potassium carbonates Nutrition 0.000 description 2
- 238000005245 sintering Methods 0.000 description 2
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910015900 BF3 Inorganic materials 0.000 description 1
- 239000003905 agrochemical Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000010812 external standard method Methods 0.000 description 1
- 239000008246 gaseous mixture Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000003380 propellant Substances 0.000 description 1
- 238000004445 quantitative analysis Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Abstract
The invention discloses a catalyst for one-step synthesis of dimethyl ether by synthesis gas for synthesis and a method for preparing the same, which belong to the technical field of catalyst. The general formula of the catalyst is CuZnAlMg(O)-gamma-Al2O3, wherein in the CuZnAlMg(O), Cu/Zn/Al is equal to (58 to 62)/(26 to 21)/(16 to 17), Mg/Cu is equal to between 1/10 and 1/5, and gamma-Al2O3/CuO(mass ratio) is equal to between 1.7/1 and 2/1. The catalyst can be prepared by a method of two-step coprecipitation and deposition. Compared with the same catalyst without an auxiliary agent, the catalyst in the invention has higher dimethyl ether yield and lower carbon dioxide selectivity under high temperature condition.
Description
Technical field
The present invention relates to a kind of Catalysts and its preparation method, more specifically to a kind of Catalysts and its preparation method of synthesis of dimethyl ether with synthesis gas one-step.
Background technology
Dimethyl ether is widely used as aerosol propellant, solvent, cold-producing medium, boron trifluoride complexing agent etc., and simultaneously, dimethyl ether all has the purposes of many uniquenesses in industry such as pharmacy, dyestuff, agricultural chemicals and daily use chemicals.Dimethyl ether acts as a fuel and has sufficient combustion, no raffinate, do not analyse the advantage of carbon, therefore dimethyl ether also can be used as a kind of novel clean energy that replaces oil, present stage, just liquefy the back directly as motor vehicle fuel or as town gas both at home and abroad at the research and utilization dimethyl ether.
The key of industrial dimethyl ether synthesis is to select effective catalyst, China since the last century the nineties, more existing patent documentation reports about the synthesis of dimethyl ether with synthesis gas one-step catalyst.For example: the application for a patent for invention publication number CN1153080 of the People's Republic of China (PRC) has reported that a kind of is the synthetic component of methyl alcohol with cupric oxide, zinc oxide, zirconia, with H type Y or SY or ZSM-5 molecular sieve etc. is the methanol dehydration component, and the synthesis gas that adopts precipitation of joint sedimentation to prepare is directly produced the catalyst of dimethyl ether.CN1583264 disclose a kind of with cupric oxide, zinc oxide, manganese oxide, commodity molecular sieve as the catalyst activity component, adopt the catalyst of the direct synthesis of dimethyl ether from synthesis gas of co-precipitation immersion process for preparing.CN1883796 discloses a kind of ZSM-5 with cupric oxide, zinc oxide, aluminium oxide, iron modification as the catalyst activity component, adopts the catalyst of the direct synthesis of dimethyl ether from synthesis gas of mechanical mixing preparation.CN1883799 discloses a kind of with cupric oxide, zinc oxide, aluminium oxide, and HMCM-22 adopts the catalyst of the direct synthesis of dimethyl ether from synthesis gas of mechanical mixing preparation as the catalyst activity component.But the equal non-refractory of the catalyst of present synthesis of dimethyl ether with synthesis gas one-step, easy inactivation under hot conditions causes under this condition yield of dimethyl ether and carbon dioxide selectivity all undesirable.
Summary of the invention
The object of the present invention is to provide the high temperature resistant catalyst of a kind of energy, with yield and the unfavorable problem of carbon dioxide selectivity under the existing dimethyl ether hot conditions in the solution prior art.Another object of the present invention provides this Preparation of catalysts method and application thereof.
The present invention realizes that the technical scheme of foregoing invention purpose is:
A kind of catalyst of synthesis of dimethyl ether with synthesis gas one-step, the general formula of this catalyst is: CuZnAlMg (O)-γ-Al
2O
3, wherein the atomic ratio of each component is Cu/Zn/Al=(58～62)/(26～21)/(16～17) in CuZnAlMg (O), Mg/Cu=1/10～1/5, γ-Al
2O
3With the mass ratio of CuO be γ-Al
2O
3/ CuO=1.7/1～2/1.
Above-mentioned synthesis of dimethyl ether with synthesis gas one-step Preparation of catalysts method may further comprise the steps:
(a) the precipitating reagent aqueous solution co-precipitation that the mixed aqueous solution and the molar concentration of Metal Zn, Al, Mg soluble salt is 0.4～1.0mol/L; The precipitating reagent aqueous solution co-precipitation that the mixed aqueous solution and the molar concentration of metal Cu, Zn soluble salt is 0.2～1.0mol/L again;
(b) two kinds of slurry agitations that step (a) obtained mix, and add dehydration component γ-Al behind aging 0.5～5h under 50～100 ℃ of conditions of temperature
2O
3, stir;
(c) slurries that step (b) is obtained filter solid, washing back dry 16h under 100 ℃ of temperature, calcine 3～4h for 350 ℃～380 ℃, compressing tablet obtains catalyst.
The soluble salt of Metal Zn, Al, Mg, Cu is nitrate or acetate described in the step (a).
Precipitating reagent is sodium carbonate, NaOH, potash, potassium hydroxide or (NH described in the step (a)
4)
2CO
3
The catalyst of synthesis of dimethyl ether with synthesis gas one-step of the present invention is applicable to the direct dimethyl ether synthesis of one-step method from syngas in the fixed bed, H in the synthesis gas of dimethyl ether synthesis
2The volume ratio of/CO is 1.5～2.5, and reaction pressure is 4.0～6.0Mpa, and reaction temperature is 260～290 ℃.
Catalyst of the present invention is the oxide of metal Cu, Zn, Al and oxide, the carrier γ-Al of auxiliary agent Mg
2O
3The mixture that forms, the proportioning of each component is finally determined through repetition test in this catalyst, the proportioning of catalyst components of the present invention, the resistance to elevated temperatures that can guarantee catalyst is improved and can produce harmful effect to its catalytic activity.Catalyst of the present invention does not add the equal catalyst of auxiliary agent Mg, has yield of dimethyl ether higher under the hot conditions and lower carbon dioxide selectivity.Do not add under the equal catalyst high temperature of auxiliary agent Mg easily sintering, and after adding Mg, can utilize stable characteristic under its oxidation state fusing point height and the hot conditions, stop sintering of catalyst to make its resistant to elevated temperatures effect thereby reach.Catalyst of the present invention CO conversion ratio under 275～285 ℃ of conditions still can reach 79.33%, CO
2Selectivity is reduced to 28.53%, and the yield of dimethyl ether can arrive 177.47g/ (kgh).
The specific embodiment
The present invention is described in further detail below in conjunction with the specific embodiment.The catalyst activity evaluation method is among each embodiment: reaction procatalyst H
2Concentration is 2.8% H
2-N
2The gaseous mixture reduction, air speed 800h
-1, 240 ℃ of reduction temperatures finish time spent 24h from room temperature to final reduction.Switch to (H subsequently
2The volume ratio of/CO is 1.5～2.5) synthesis gas, in reaction pressure is 4.0～6.0Mpa, reaction temperature is a dimethyl ether synthesis under 260～290 ℃ the condition, reaction end gas is analyzed with the Sichuan SC-1001 of analytical instrument factory gas chromatograph, adopt each components contents of external standard method quantitative analysis, through calculating CO conversion ratio and each product selectivity after the Carbon balance.
Embodiment 1
With 16.57gZn (NO
3)
26H
2O, 62.5g Al (NO
3)
39H
2O and 31.8gMg (NO
3)
26H
2O is made into the 537.5ml mixing salt solution, and with 0.4mol/L sodium carbonate liquor co-precipitation, control reactant liquor pH value is 7.0～7.5 under 65 ℃～70 ℃ conditions, and aging 1 makes the A phase.With 149.83gCu (NO
3)
23H
2O and 45.5gZn (NO
3)
26H
2O is made into the 1000ml mixing salt solution, and with 0.4mol/L sodium carbonate liquor co-precipitation, control reactant liquor pH value is 7.0～7.5 to make the B phase under 75 ℃～80 ℃ conditions.A, B two-phase are mixed, and aging 1h adds γ-Al
2O
3Stir, institute adds γ-Al
2O
3With the mass ratio of CuO be γ-Al
2O
3/ CuO=1.75/1, after filtration, deionized water wash dry 16h, 350 ℃ of calcining 4h under solid, the 100 ℃ of temperature, compressing tablet makes catalyst cat-a.With catalyst cat-a dimethyl ether synthesis in the synthesis gas fixed bed, the H of synthesis gas
2The volume ratio of/CO is 1.5, and synthetic reaction pressure is 6Mpa, and reaction temperature is 260 ℃.Through the catalyst activity property testing, the CO conversion ratio is 80.03%, CO
2Selectivity is 29.12%, and the yield of dimethyl ether is 175.6g/ (kgh).
Embodiment 2
With 16.57gZn (NO
3)
26H
2O, 57.9g Al (NO
3)
39H
2O and 20.9gMg (NO
3)
26H
2O is made into the 537.5ml mixing salt solution, and with 1.0mol/L sodium carbonate liquor co-precipitation, control reactant liquor pH value is 7.0～7.5 under 65 ℃～70 ℃ conditions, and aging 2h makes the A phase.With 45.5gZn (NO
3)
26H
2O and 131.5g Cu (NO
3)
23H
2O is made into the 1000ml mixing salt solution, and with 1.0mol/L sodium carbonate liquor co-precipitation, control reactant liquor pH value is 7.0～7.5 to make the B phase under 75 ℃～80 ℃ conditions.A, B two-phase are mixed, add γ-Al behind the aging 2h
2O
3, stirring, institute adds γ-Al
2O
3With the mass ratio of CuO be γ-Al
2O
3/ CuO=1.75/1, after filtration, deionized water wash dry 16h, 380 ℃ of calcining 4h under solid, the 100 ℃ of temperature, compressing tablet makes catalyst cat-b.With this catalyst dimethyl ether synthesis in the synthesis gas fixed bed, synthesis gas air speed 1500h
-1, H in the synthesis gas
2The volume ratio of/CO is 2.5, and synthetic reaction pressure is 5Mpa, and reaction temperature is 275 ℃.Through the catalyst activity property testing, the CO conversion ratio is 79.33%, CO
2Selectivity is 28.53%, and the yield of dimethyl ether is 177.47g/ (kgh).
Embodiment 3
With 16.57gZn (NO
3)
26H
2O, 57.9g Al (NO
3)
39H
2O and 20.9gMg (NO
3)
26H
2O is made into the 537.5ml mixing salt solution, and with 0.6mol/L solution of potassium carbonate co-precipitation, control reactant liquor pH value is 7.0～7.5 under 65 ℃～70 ℃ conditions, and aging 1.5h makes the A phase.With 45.5gZn (NO
3)
26H
2O and 131.5g Cu (NO
3)
23H
2O is made into the 1000ml mixing salt solution, and with 0.6mol/L solution of potassium carbonate co-precipitation, the pH value of control reactant liquor is 7.0～7.5 to make the B phase under 75 ℃～80 ℃ conditions.A, B two-phase are mixed, add γ-Al behind the aging 1.5h
2O
3, stirring, institute adds γ-Al
2O
3With CuO mass ratio in the catalyst be γ-Al
2O
3/ CuO=1.8/1, after filtration, deionized water wash dry 16h, 360 ℃ of calcining 3.5h under solid, the 100 ℃ of temperature, compressing tablet makes catalyst cat-c.With this catalyst dimethyl ether synthesis in fixed bed, synthesis gas air speed 1500h
-1, H in the synthesis gas
2The volume ratio of/CO is 2.5, and synthetic reaction pressure is 4Mpa, and reaction temperature is 290 ℃.Through the catalyst activity property testing, the CO conversion ratio is 77.96%, CO
2Selectivity is 29.5%, and the yield of dimethyl ether is 174.67g/ (kgh).
Embodiment 4
With 16.57gZn (NO
3)
26H
2O, 48.2g Al (NO
3)
39H
2O and 11.9gMg (NO
3)
26H
2O is made into the 537.5ml mixing salt solution, and with 0.8mol/L sodium hydroxide solution co-precipitation, pH value is 7.0～7.5 under 65 ℃～70 ℃ conditions, and aging 2h makes the A phase.With 45.5gZn (NO
3)
26H
2O and 112.5g Cu (NO
3)
23H
2O is made into the 1000ml mixing salt solution, and with 0.8mol/L sodium hydroxide solution co-precipitation, pH value is 7.0～7.5 to make the B phase under 75 ℃～80 ℃ conditions.A, B two-phase are mixed, add γ-Al behind the aging 2h
2O
3, institute adds γ-Al
2O
3With CuO mass ratio in the catalyst be γ-Al
2O
3/ CuO=1.7/1, after filtration, deionized water wash dry 16h, 370 ℃ of calcining 3h under solid, the 100 ℃ of temperature, compressing tablet makes catalyst cat-d.With this catalyst dimethyl ether synthesis in fixed bed, synthesis gas air speed 1500h
-1, H in the synthesis gas
2The volume ratio of/CO is 2, and synthetic reaction pressure is 4Mpa, and reaction temperature is 275 ℃.Through the catalyst activity property testing, the CO conversion ratio is 80.06%, CO
2Selectivity is 28.09%, and the yield of dimethyl ether is 177.05g/ (kgh).
Comparison example:
With 16.57gZn (NO
3)
26H
2O, 57.9g Al (NO
3)
39H
2O is made into the 537.5ml mixing salt solution, and with 0.8mol/L sodium carbonate liquor co-precipitation, control reactant liquor pH value is 7.0～7.5 under 65 ℃～70 ℃ conditions, and aging 2h makes the A phase.With 45.5gZn (NO
3)
26H
2O and 131.52gCu (NO
3)
23H
2O is made into the 1000ml mixing salt solution, and with 0.8mol/L sodium carbonate liquor co-precipitation, control reactant liquor pH value is 7.0～7.5 to make the B phase under 75 ℃～80 ℃ conditions.A, B two-phase are mixed, and aging 2h adds γ-Al
2O
3, stirring, institute adds γ-Al
2O
3With the mass ratio of CuO in the catalyst be γ-Al
2O
3/ CuO=1.75/1, after filtration, deionized water wash dry 16h, 380 ℃ of calcining 4h under solid, the 100 ℃ of temperature, compressing tablet makes catalyst cat-d.With this catalyst dimethyl ether synthesis in fixed bed, synthesis gas air speed 1500h
-1, H in the synthesis gas
2The volume ratio of/CO is 2.5, and synthetic reaction pressure is 5Mpa, and reaction temperature is 275 ℃.Through the catalyst activity property testing, the CO conversion ratio is 80.97%, CO
2Selectivity is 37.73%, and the yield of dimethyl ether is 149.22g/ (kgh).
Claims (5)
1. the catalyst of a synthesis of dimethyl ether with synthesis gas one-step, it is characterized in that: the general formula of this catalyst is: CuZnAlMg (O)-γ-Al
2O
3, wherein the atomic ratio of each component is Cu/Zn/Al=(58～62)/(26～21)/(16～17) in CuZnAlMg (O), Mg/Cu=1/10～1/5, γ-Al
2O
3With the mass ratio of CuO be γ-Al
2O
3/ CuO=1.7/1～2/1.
2. the described synthesis of dimethyl ether with synthesis gas one-step Preparation of catalysts of claim 1 method is characterized in that may further comprise the steps:
(a) the precipitating reagent aqueous solution co-precipitation that the mixed aqueous solution and the molar concentration of Metal Zn, Al, Mg soluble salt is 0.4～1.0mol/L; The precipitating reagent aqueous solution co-precipitation that the mixed aqueous solution and the molar concentration of metal Cu, Zn soluble salt is 0.2～1.0mol/L again;
(b) two kinds of slurry agitations that step (a) obtained mix, and in temperature are to add dehydration component γ-Al under 50～100 ℃ the condition behind aging 0.5～5h
2O
3
(c) slurries that step (b) is obtained filter solid, washing back dry 16h under 100 ℃ of temperature, calcine 3～4h for 350 ℃～380 ℃, compressing tablet obtains catalyst.
3. according to the described synthesis of dimethyl ether with synthesis gas one-step Preparation of catalysts of claim 2 method, it is characterized in that: the soluble salt of Metal Zn, Al, Mg, Cu is a nitrate described in the step (a).
4. according to the preparation method of the described synthesis of dimethyl ether with synthesis gas one-step catalyst of claim 2, it is characterized in that: precipitating reagent is sodium carbonate, NaOH, potash, potassium hydroxide or (NH described in the step (a)
4)
2CO
3
5. the described synthesis of dimethyl ether with synthesis gas one-step Application of Catalyst of claim 1 is characterized in that: H in the synthesis gas of dimethyl ether synthesis
2The volume ratio of/CO is 1.5～2.5, and reaction pressure is 4.0～6.0MPa, and reaction temperature is 260～290 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100465925A CN101402042B (en) | 2008-11-18 | 2008-11-18 | Catalyst for synthesis of dimethyl ether with synthesis gas one-step method, production method and uses thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100465925A CN101402042B (en) | 2008-11-18 | 2008-11-18 | Catalyst for synthesis of dimethyl ether with synthesis gas one-step method, production method and uses thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101402042A CN101402042A (en) | 2009-04-08 |
| CN101402042B true CN101402042B (en) | 2010-12-29 |
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ID=40536289
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|---|---|---|---|
| CN2008100465925A Expired - Fee Related CN101402042B (en) | 2008-11-18 | 2008-11-18 | Catalyst for synthesis of dimethyl ether with synthesis gas one-step method, production method and uses thereof |
Country Status (1)
| Country | Link |
|---|---|
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2008
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