CN105435799A - Catalyst for ethanol preparation by ethyl acetate hydrogenation and preparation method for catalyst - Google Patents
Catalyst for ethanol preparation by ethyl acetate hydrogenation and preparation method for catalyst Download PDFInfo
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- CN105435799A CN105435799A CN201510754136.6A CN201510754136A CN105435799A CN 105435799 A CN105435799 A CN 105435799A CN 201510754136 A CN201510754136 A CN 201510754136A CN 105435799 A CN105435799 A CN 105435799A
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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
- B01J23/002—Mixed oxides other than spinels, e.g. perovskite
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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
- B01J23/72—Copper
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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
- B01J23/75—Cobalt
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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
- B01J23/80—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 zinc, cadmium or mercury
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/132—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group
- C07C29/136—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH
- C07C29/147—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof
- C07C29/149—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by reduction of an oxygen containing functional group of >C=O containing groups, e.g. —COOH of carboxylic acids or derivatives thereof with hydrogen or hydrogen-containing gases
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2523/00—Constitutive chemical elements of heterogeneous catalysts
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Abstract
The invention discloses a catalyst for ethanol preparation by ethyl acetate hydrogenation. The sum of the weight percentages of catalyst components is 100%. The catalyst comprises the following components in percentage by weight: 40-70% of copper oxide, 10-50% of an additive and the balance of aluminum oxide. A preparation method for the catalyst comprises the following preparation steps of: (1) preparing a metal salt solution; (2) preparing a precipitant solution; (3) mixing the metal salt solution with the precipitant solution, and performing water-bath treatment, precipitation, ultrasonic treatment, standing and ageing to obtain pulp; (4) filtering, flushing and drying to obtain a dried material; and (5) roasting, tabletting, grinding, and screening to be 40-60-mesh so as to obtain the catalyst. The catalyst has the effects of promoting active components to be dispersed, reducing particle size of the active components and improving catalytic reaction performance. Compared with an existing catalyst, the catalyst provided by the invention has higher raw material conversion rate and better ethanol selectivity, and is beneficial for more perfecting a technology for preparing ethanol by acetic acid esterification hydrogenation and improving the benefits.
Description
Technical field
The present invention relates to catalyst preparation technical field, relate to the catalyst of ethanol production, specifically, is the Catalysts and its preparation method for ethyl acetate hydrogenation ethanol production and application.
Background technology
Ethanol is commonly called as alcohol, is a kind of important industrial chemicals, is widely used in the manufacturing field of paint, coating, ink, medicine and food etc.In addition, ethanol is again a kind of oil dope and fuel of having very much application potential, the more uprising performance of its oxygen content latent heat of vaporization is good, as vehicle fuel, possesses the good characteristic that burning is complete and CO emission is low, the pollutant in vehicle exhaust can be made obviously to reduce, worldwide obtain accreditation and promote.
The preparation of ethanol, traditional synthetic method mainly contains ethylene hydration method and fermentation method.At present, ethylene hydration method is owing to needing this important industrial chemicals of a large amount of consumption of ethylene, and it is applied in and is restricted to a certain extent.Described fermentation method refers to various sugary agricultural product, agriculture and forestry accessory substance for raw material, through hydrolysis, fermentation, makes disaccharide, polysaccharide conversion be the method for ethanol.
Industrial is at present that source produces the process route of ethanol and mainly contains four kinds: (1) syngas chemistry catalysis with coal; (2) synthesis gas anaerobic fermentation; (3) synthesis gas is through acetic acid hydrogenation; (4) synthesis gas is through acetic acid esterified hydrogenation.First two process route belongs to direct method, and latter two process route belongs to indirect method.From reaction principle, direct method response path is the shortest, but due to its CO conversion low, ethanol selective lower, raw material availability is lower.And although indirect method response path is longer, but the conversion ratio of its raw material and the selective equal of ethanol can reach higher level, and it is also lower to the requirement of reaction unit and process conditions, relative inexpensiveness, therefore, at present to indirect method use and to continue research more some more, wherein to the research and development of a catalyst main content especially.The Cu-series catalyst of current ethanol production application easily sinters under the high temperature conditions and assembles, and causes instability or the inactivation of catalyst.Therefore, exploitation has high temperature sintering resistant ability and the technology with the catalyst Dichlorodiphenyl Acetate esterification hydrogenation ethanol production of greater activity has important practical significance.
Summary of the invention
The object of the invention is to solve the problem, a kind of catalyst for ethyl acetate hydrogenation ethanol production be provided, it with cupric oxide (CuO) for active component, with zinc oxide (ZnO), cobalt oxide (CoO), nickel oxide (NiO) and/or manganese oxide (MnO
2) as auxiliary agent, with aluminium oxide (Al
2o
3) be carrier; Have and promote active component dispersion, reduce the effect of active component particle diameter and then raising catalytic perfomance.The second object of the present invention is, provides the preparation method of described catalyst, and it contributes to the decentralization improving active ingredient copper by controlling the formation of catalyst specific precursors structure, reduce the particle diameter of copper, improves stability and the activity of catalyst.Catalyst prepared by the present invention is conducive to more improving and increasing the benefit of acetate hydrogenation ethanol production technology.
For achieving the above object, this invention takes following technical scheme.
For a catalyst for ethyl acetate hydrogenation ethanol production, it is characterized in that, the mass percent sum of its each constituent is 100%, wherein:
Cupric oxide (CuO) 40wt% ~ 70wt%;
Auxiliary agent 10wt% ~ 50wt%;
Surplus is aluminium oxide (Al
2o
3).
Optionally, described auxiliary agent is zinc oxide (ZnO), cobalt oxide (CoO), nickel oxide (NiO) and/or manganese oxide (MnO
2) one or more.
For realizing above-mentioned second object, this invention takes following technical scheme.
The preparation method of the described catalyst for ethyl acetate hydrogenation ethanol production, is characterized in that, comprise following preparation process:
(1) take a certain amount of slaine and be dissolved in deionized water, after adding thermal agitation, obtain solution A;
(2) take a certain amount of precipitating reagent and be dissolved in deionized water, after adding thermal agitation, obtain solution B;
(3) solution B of the solution A of step (1) and step (2) is placed in two pear shape separatory funnels respectively, first solution A is added in there-necked flask, and then add solution B in described there-necked flask; Or first solution B is added in there-necked flask, and then add solution A in described there-necked flask; Or solution A and solution B being added in there-necked flask simultaneously, at the temperature of 40 ~ 80 DEG C, carries out water-bath, by regulating solution flow rate to keep the pH value of solution to be 6 ~ 10, being uniformly mixed 1 hour; Precipitation; Then ultrasonic process 0.5 ~ 2 hour, finally leaves standstill aging 8 ~ 16 hours, obtains slurry;
(4) slurry that step (3) obtains is filtered, then use deionized water rinsing, until not containing Na in filtrate
+ion; Put into baking oven after being collected by filter cake, 110 DEG C of dried overnight, obtain dried material;
(5) dried material that step (4) obtains is placed in Muffle furnace, roasting 2 ~ 8 hours in 200 ~ 600 DEG C of temperature, after compressing tablet is pulverized, is sized to 40 ~ 60 orders, obtains target product---for the catalyst of ethyl acetate hydrogenation ethanol production.
Optionally, the slaine described in step (1) is nitrate, and described nitrate is Cu(NO
3)
23H
-2o; Zn(NO
3)
26H
2o; Al(NO
3)
39H
2o; Mg(NO
3)
26H2O; Ni(NO
3)
26H2O; Co(NO
3)
2one or more in 6H2O.
Further, in described step (1), be that 0.5 ~ 2:5 takes nitrate by the mol ratio of cupric oxide and all auxiliary agent sums.
Optionally, the precipitating reagent described in step (2) is sodium carbonate (Na
2cO
3), NaOH (NaOH), ammoniacal liquor (NH
3h
2o) the mixture of one or more.
Further, in described step (2), by sodium carbonate (Na
2cO
3) or NaOH (NaOH) or ammoniacal liquor (NH
3h
2o) or the molar concentration of their mixture in solution B be that 1mol/L prepares.
Further, the filtration described in step (4) adopts suction filtration mode.
The application of described catalyst in ethyl acetate hydrogenation ethanol production, is characterized in that, before using, catalyst is carried out reduction treatment, reduction temperature is 200 ~ 400 DEG C, and pressure is 0.1 ~ 2MPa, and the recovery time is 1 ~ 6h.
The application of described catalyst in ethyl acetate hydrogenation ethanol production, is characterized in that, adopt tubular fixed-bed reactor to react, reaction temperature is 200 ~ 300 DEG C, and reaction pressure is 0.1 ~ 4MPa, and ethyl acetate liquid air speed is 0.5 ~ 2h
-1, H
2/ ethyl acetate=2 ~ 50mol.
Good effect of the present invention is:
(1) catalyst of the present invention is active component with cupric oxide, with ZnO, CoO, NiO and/or MnO
2as auxiliary agent, have and promote active component dispersion, reduce active component particle diameter, and then improve the effect of catalytic perfomance.
(2) preparation method of the present invention adopts coprecipitation, utilizes auxiliary agent to carry out modification, by controlling the formation of catalyst specific precursors structure, contributing to the decentralization improving active component cupric oxide, reducing the particle diameter of copper, improve stability and the activity of catalyst.
(3) catalyst that prepared by the present invention has higher feed stock conversion and better ethanol selectivity compared with existing catalyst, is conducive to more improving and increasing the benefit of acetic acid esterified hydrogenation ethanol production technology.
Detailed description of the invention
Below introduce the specific embodiment of the present invention, 4 embodiments and 4 Application Examples are provided.But it is noted that enforcement of the present invention is not limited to following embodiment.
Embodiment 1
For a preparation method for the catalyst of ethyl acetate hydrogenation ethanol production, comprise following preparation process:
(1) 24.15gCu(NO is taken
3)
23H
-2o, 6.525gZn(NO
3)
26H
2o and 18.75gAl(NO
3)
39H
2o is dissolved in deionized water, after adding thermal agitation, is mixed with the mixing salt solution (ie in solution A) of concentration 1mol/L.
(2) Na is taken
2cO
3be dissolved in deionized water, after adding thermal agitation, be mixed with the solution B of concentration 1mol/L.
(3) solution B of the solution A of step (1) and step (2) is placed in two pear shape separatory funnels respectively, then mixes: can first solution A be added in there-necked flask, and then add solution B in described there-necked flask; Or first solution B is added in there-necked flask, and then add solution A in described there-necked flask; Or solution A and solution B are added in there-necked flask simultaneously.
Water-bath is carried out at the temperature of 60 DEG C; By regulating solution flow rate to keep the pH value of solution to be 10, be uniformly mixed 1 hour; Precipitation; Then ultrasonic process 0.5 hour, finally leaves standstill aging 12 hours, obtains slurry.
(4) slurry that step (3) obtains is filtered, then use deionized water rinsing, until not containing Na in filtrate
+ion; Put into baking oven after being collected by filter cake, 110 DEG C of dried overnight, obtain dried material.
(5) dried material that step (4) obtains is placed in Muffle furnace, roasting 4 hours in 450 DEG C of temperature, after compressing tablet is pulverized, is sized to 40 ~ 60 orders, obtains catalyst A.
Application Example 1
Catalyst A prepared by embodiment 1 is used for the production process of ethyl acetate hydrogenation ethanol production.
Before using, catalyst A is carried out reduction treatment: use pure H
2under normal pressure, 350 DEG C reduction 4 hours.
During use, catalyst A is placed in tubular fixed-bed reactor, tubular fixed-bed reactor is cooled to 260 DEG C, boosts to 2.0MPa.
Reaction temperature be 260 DEG C, reaction pressure is 2.0MPa, ethyl acetate liquid phase air speed 2h
-1, hydrogen and ethyl acetate mol ratio=5mol condition under, the conversion ratio obtaining ethyl acetate is 99%, and the selective of ethanol is 98.36%.
Embodiment 2
For a preparation method for the catalyst of ethyl acetate hydrogenation ethanol production, comprise following preparation process:
(1) 24.15gCu (NO is taken
3)
23H-
2o, 2.5641gMg (NO
3)
26H
2o and 18.75gAl (NO
3)
39H
2o is dissolved in deionized water, is mixed with the mixing salt solution (ie in solution A) of concentration 1mol/L.
(2) take NaOH and be dissolved in deionized water, be mixed with the solution B of concentration 1mol/L.
(3) (substantially with embodiment 1).
Precipitate at the temperature of 40 DEG C, control ph is 6, is constantly uniformly mixed 1h; Precipitation terminates latter ultrasonic 1 hour, then leaves standstill aging 8h, obtains slurry.
(4) (with embodiment 1).
(5) dried material that step (4) obtains is placed in Muffle furnace 200 DEG C of temperature roastings 6 hours, after compressing tablet is pulverized, is sized to 40 ~ 60 orders, obtains catalyst B.
Application Example 2
Catalyst B prepared by embodiment 2 is used for the production process of ethyl acetate hydrogenation ethanol production.
Before using, catalyst B is carried out reduction treatment: use pure H
2under 0.1MPa, 400 DEG C reduction 1h.
During use, 1g catalyst A is placed in tubular fixed-bed reactor, and hydrogen enters reactor with ethyl acetate after preheating mixes, and tubular fixed-bed reactor is cooled to 260 DEG C, boost to 2.0MPa, reaction temperature be 260 DEG C, reaction pressure is 2.0MPa, ethyl acetate liquid phase air speed 0.5h
-1, hydrogen and ethyl acetate mol ratio=2mol condition under, the conversion ratio obtaining ethyl acetate is 99%, and the selective of ethanol is 98.7%.
Embodiment 3
For a preparation method for the catalyst of ethyl acetate hydrogenation ethanol production, comprise following preparation process:
(1) 24.15gCu (NO is taken
3)
23H-
2o, 2.9081gNi (NO
3)
26H
2o and 18.75gAl (NO
3)
39H
2o is dissolved in deionized water, is mixed with the mixing salt solution (ie in solution A) of concentration 1mol/L.
(2) NH is taken
3h
2o is dissolved in deionized water, is mixed with the solution B of concentration 1mol/L.
(3) (substantially with embodiment 1).
Precipitate at the temperature of 80 DEG C, control ph is 9, is constantly uniformly mixed 1h; Precipitation terminates latter ultrasonic 2 hours, then leaves standstill aging 16h, obtains slurry.
(4) (with embodiment 1).
(5) dried material that step (4) obtains is placed in Muffle furnace 600 DEG C of temperature roastings 2 hours, after compressing tablet is pulverized, is sized to 40 ~ 60 orders, obtains catalyst C.
Application Example 3
Catalyst C embodiment 3 prepared is used for the production process of ethyl acetate hydrogenation ethanol production.
Before using, catalyst C is carried out reduction treatment: use pure H
2under 2MPa, 200 DEG C reduction 6h.
Be 240 DEG C in reaction temperature, reaction pressure is 2.0MPa, ethyl acetate liquid phase air speed 2h
-1, hydrogen and ethyl acetate mol ratio=50mol condition under, the conversion ratio obtaining ethyl acetate is 99%, and the selective of ethanol is 95.61%.
Embodiment 4
For a preparation method for the catalyst of ethyl acetate hydrogenation ethanol production, comprise following preparation process:
(1) 24.15gCu (NO is taken
3)
23H-
2o, 2.9105gCo (NO
3)
26H
2o and 18.75gAl (NO
3)
39H
2o is dissolved in deionized water, is mixed with the mixing salt solution (ie in solution A) of concentration 1mol/L.
(2) Na is taken
2cO
3, NaOH, NH
3h
2o is dissolved in deionized water, is mixed with the solution B of concentration 1mol/L.
(3) (substantially with embodiment 1).
Precipitate at the temperature of 60 DEG C, control ph is 7, is constantly uniformly mixed 1h; Precipitation terminates latter ultrasonic 0.5 hour, then leaves standstill aging 12h, obtains slurry.
(4) (with embodiment 1).
(5) dried material that step (4) obtains is placed in Muffle furnace 450 DEG C of temperature roastings 5 hours, after compressing tablet is pulverized, is sized to 40 ~ 60 orders, obtains catalyst D.
Application Example 4
Catalyst D embodiment 4 prepared is used for the production process of ethyl acetate hydrogenation ethanol production.
Before using, catalyst D is carried out reduction treatment: use pure H
2under normal pressure, 300 DEG C reduction 4h.
During use, 1g catalyst D is placed in tubular fixed-bed reactor, tubular fixed-bed reactor is cooled to 260 DEG C, boosts to 2.0MPa.
Be 260 DEG C in reaction temperature, reaction pressure is 2.0MPa, ethyl acetate liquid phase air speed 2h
-1, hydrogen and ethyl acetate mol ratio=10mol condition under, the conversion ratio obtaining ethyl acetate is 99%, and the selective of ethanol is 96.58%.
Embodiments of the invention 1 ~ 4 prove with Application Example 1 ~ 4: the catalyst for ethyl acetate hydrogenation ethanol production prepared by the present invention, compared with existing catalyst, has higher feed stock conversion and better ethanol selectivity.
Claims (10)
1. for the catalyst of ethyl acetate hydrogenation ethanol production, it is characterized in that, the mass percent sum of its each constituent is 100%, wherein:
Cupric oxide 40wt% ~ 70wt%;
Auxiliary agent 10wt% ~ 50wt%;
Surplus is aluminium oxide.
2. as claimed in claim 1 for a catalyst for ethyl acetate hydrogenation ethanol production, it is characterized in that, described auxiliary agent is one or more of zinc oxide, cobalt oxide, nickel oxide and/or manganese oxide.
3., as claimed in claim 1 for a preparation method for the catalyst of ethyl acetate hydrogenation ethanol production, it is characterized in that, comprise following preparation process:
(1) take a certain amount of slaine and be dissolved in deionized water, after adding thermal agitation, obtain solution A;
(2) take a certain amount of precipitating reagent and be dissolved in deionized water, after adding thermal agitation, obtain solution B;
(3) solution B of the solution A of step (1) and step (2) is placed in two pear shape separatory funnels respectively, first solution A is added in there-necked flask, and then add solution B in described there-necked flask; Or first solution B is added in there-necked flask, and then add solution A in described there-necked flask; Or solution A and solution B being added in there-necked flask simultaneously, at the temperature of 40 ~ 80 DEG C, carries out water-bath, by regulating solution flow rate to keep the pH value of solution to be 6 ~ 10, being uniformly mixed 1 hour; Precipitation; Then ultrasonic process 0.5 ~ 2 hour, finally leaves standstill aging 8 ~ 16 hours, obtains slurry;
(4) slurry that step (3) obtains is filtered, then use deionized water rinsing, until not containing Na in filtrate
+ion; Put into baking oven after being collected by filter cake, 110 DEG C of dried overnight, obtain dried material;
(5) dried material that step (4) obtains is placed in Muffle furnace, roasting 2 ~ 8 hours in 200 ~ 600 DEG C of temperature, after compressing tablet is pulverized, is sized to 40 ~ 60 orders, obtains target product---for the catalyst of ethyl acetate hydrogenation ethanol production.
4. a preparation method as claimed in claim 3, is characterized in that, the slaine described in step (1) is nitrate, and described nitrate is Cu (NO
3)
23H
-2o; Zn (NO
3)
26H
2o; Al (NO
3)
39H
2o; Mg (NO3) 26H2O; Ni (NO3) 26H2O; One or more in Co (NO3) 26H2O.
5. a preparation method as claimed in claim 4, is characterized in that, in described step (1), is that 0.5 ~ 2:5 takes nitrate by the mol ratio of cupric oxide and all auxiliary agent sums.
6. a preparation method as claimed in claim 3, is characterized in that, the precipitating reagent described in step (2) is the mixture of one or more of sodium carbonate, NaOH, ammoniacal liquor.
7. a preparation method as claimed in claim 6, is characterized in that, in described step (2), is that 1mol/L prepares by sodium carbonate or NaOH or ammoniacal liquor or the molar concentration of their mixture in solution B.
8. a preparation method as claimed in claim 3, is characterized in that, the filtration described in step (4) adopts suction filtration mode.
9. the application of catalyst described in ethyl acetate hydrogenation ethanol production, is characterized in that, before using, catalyst is carried out reduction treatment, reduction temperature is 200 ~ 400 DEG C, and pressure is 0.1 ~ 2MPa, and the recovery time is 1 ~ 6h.
10. the application of catalyst described in ethyl acetate hydrogenation ethanol production, is characterized in that, adopt tubular fixed-bed reactor to react, reaction temperature is 200 ~ 300 DEG C, and reaction pressure is 0.1 ~ 4MPa, and ethyl acetate liquid air speed is 0.5 ~ 2h
-1, H
2/ ethyl acetate=2 ~ 50mol.
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Cited By (5)
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| CN107999082A (en) * | 2017-12-19 | 2018-05-08 | 常州瑞华化工工程技术股份有限公司 | A kind of preparation method and applications of copper system hydrogenation of acetophenone catalyst |
| CN108014804A (en) * | 2016-11-04 | 2018-05-11 | 中国石油化工股份有限公司 | Prepare the catalyst and its application method of alcohol |
| CN108558700A (en) * | 2018-06-08 | 2018-09-21 | 潍坊伽玛化学有限公司 | A kind of synthetic method of 1,2- pentanediols |
| CN114392749A (en) * | 2021-12-29 | 2022-04-26 | 西南化工研究设计院有限公司 | Catalyst containing acetic acid for preparing ethanol by methyl acetate hydrogenation, preparation and application thereof |
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