CN106140172A - A kind of catalyst pressing liquid-phase hydrogenatin fatty alcohol be applicable to fatty acid methyl ester - Google Patents
A kind of catalyst pressing liquid-phase hydrogenatin fatty alcohol be applicable to fatty acid methyl ester Download PDFInfo
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- CN106140172A CN106140172A CN201510131972.9A CN201510131972A CN106140172A CN 106140172 A CN106140172 A CN 106140172A CN 201510131972 A CN201510131972 A CN 201510131972A CN 106140172 A CN106140172 A CN 106140172A
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- acid methyl
- methyl ester
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Abstract
The invention discloses a kind of catalyst pressing liquid-phase hydrogenatin fatty alcohol be applicable to fatty acid methyl ester, described catalyst is made up of following components (percentage by weight): copper oxide 10%～60%, zinc oxide 5%～40%, aluminium oxide 0%～80%.Present invention copper oxide in the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol is main catalytic active component, and zinc oxide is cocatalyst component, and aluminium oxide is cocatalyst component and carrier.Synergism between each component, shows and is well catalyzed activity, fine selectivity and good stability.And the present invention is less for the Components of Catalysts kind of fatty acid methyl ester catalytic hydrogenation fatty alcohol, each component effect on environment, pollution are the least, have good environmental benefit.The present invention is highly suitable for fatty acid methyl ester catalytic hydrogenation fatty alcohol technique for the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol, it is easy to industrialization promotion uses, and prospects for commercial application is fine.
Description
Technical field
The present invention relates to catalyst in chemical make and application, be specifically related to one hydraulic fluid be applicable to fatty acid methyl ester and be added
Hydrogen prepares making and the application of the catalyst of fatty alcohol.
Background technology
Fatty alcohol is to produce surfactant, the important foundation raw material of lubricant, utilizes the hydroxy functional group in its molecular structure,
Reaction can be carried out with multiple compounds to be applied fatty alcohol derivative widely.
Owing to petroleum product price remains high, the synthetic fatty alcohol industry development with alkene as raw material is absorbed in stagnation, adds Asia
With the increase in demand to fatty alcohol of the area, America, the natural fatty alcohol industry development impetus is the most powerful, and production scale constantly expands,
Natural alcohol will rise to 5.5:4.5 from the 4.9:5.1 in 20 end of the centurys with the ratio of synthol production capacity, even up to 6:4.Close
The product price becoming fatty alcohol is higher, and difficult degradation, and natural fatty alcohol to possess using effect good, can the advantage such as biodegradation and
Had a preference for by consumers in general.
Fatty acid methyl ester hydrogenation is typically all carried out under the conditions of high pressure (20.0MPa), and Dai Wei company takes the lead in fatty acid methyl ester hydrogenation
Pressure falls below 4.0MPa, but owing to being affected by catalyst activity, it is necessary to improve dividing potential drop with bigger hydrogen-oil ratio, react several
Entirely carrying out in the gas phase, make recycle compressor power be greatly improved, hydrogenation energy consumption is higher.Therefore medium pressure hydrogenation catalyst is improved
Activity is to reduce the key of hydrogen-oil ratio, is also the key measure of this energy saving technology.
Industrial, fatty acid methyl ester hydrogenation relatively early uses Cu/Cr catalyst, though this kind of catalyst possesses higher catalysis and lives
Property and good selectivity, but in its preparation process, have substantial amounts of Cr6+ filtering and flow into mother solution during washing, produce serious
Environmental pollution.At present, Cu/Zn catalyst, as excellent not one of chromium-containing catalyst, has substituted Cu/Cr catalyst extensive
It is applied to the commercial production of domestic and international natural fatty alcohol.
The Chinese patent application of Publication No. CN 102476056A discloses urging of a kind of fatty acid methyl ester catalytic hydrogenation fatty alcohol
The preparation method of agent and application, by (percentage by weight) 18-66% copper oxide or copper oxide and zinc oxide mix, 0-40% manganese oxide,
One or two kinds of in nickel oxide, 5-17% aluminium oxide and 0-45% carrier composition, carrier is kieselguhr or calcium carbonate, its system
Preparation Method includes: be dissolved in the water by least two soluble-salt in copper, zinc, manganese, nickel, aluminum, configures mixed solution；Will
Water or water and carrier, as base fluid, add aqueous sodium carbonate and mixed solution to base fluid drip, after dripping off, are precipitated product,
Through aging, filter, wash, dry, suppress after obtain finished product.Although this catalyst has good catalysis activity, it is Cu/Cr
The succedaneum of catalyst, but preparing of this catalyst is cumbersome, and required adding ingredient is complicated, and industrial applications is more difficult.
Summary of the invention
The invention reside in employing sol-gel technique and prepare high dispersing copper zinc-aluminium high activity fatty acid methyl ester medium pressure hydrogenation fatty alcohol
Catalyst, catalyst activity height, good stability, environmentally friendly, make catalyst can in pressure, the condition of less hydrogen-oil ratio enter
Row liquid-phase hydrogenatin.
Catalyst in the present invention, is made up of following components (percentage by weight):
Copper oxide 10%～60%
Zinc oxide 5%～40%
Aluminium oxide 0%～80%
As preferably, the catalyst for fatty acid methyl ester catalytic hydrogenation fatty alcohol in the present invention, by following components (weight hundred
Proportion by subtraction) composition:
Copper oxide 10%～60%
Zinc oxide 5%～40%
Aluminium oxide 20%～60%
Aluminium oxide in component had both played carrier function, improves the specific surface area of catalyst, also provides active acidic for catalyst
Center, makes catalyst activity and stability be obtained for raising.
Further preferably, the catalyst of the fatty acid methyl ester catalytic hydrogenation fatty alcohol in the present invention, by following components (percentage by weight)
Composition:
Copper oxide 30%～60%
Zinc oxide 10%～30%
Aluminium oxide 20%～60%
When said components (percentage by weight), particularly when copper oxide and zinc oxide simultaneously in the presence of, this is used for fatty acid methyl ester
The catalysis activity of the catalyst of catalytic hydrogenation fatty alcohol is the most excellent.
The invention reside in the preparation method that a kind of catalyst for fatty acid methyl ester catalytic hydrogenation fatty alcohol is provided, the party's legal system
It is standby that flow process is simple, workable, reproducibility is high.
The method for preparing catalyst of present invention design is as follows:
Preparation (total weight percent) Han solute is the soluble copper salt of 5%-30%, soluble zinc salt, soluble aluminum saline solution,
Obtain base fluid.
After the base fluid obtained in step (1) stirring is warmed up to 50 DEG C～100 DEG C, drip precipitant to base fluid, by the PH of base fluid
Regulate to 7～10, aging 2～3 hours, be precipitated product.
After the precipitated product obtained in step (2) is filtered, washing, dry, pulverize, with quantitative aluminium oxide, a small amount of graphite
Uniformly after mixing, carry out playing sheet molding, roasting 2～4 hours at 400 DEG C～600 DEG C, obtain invented catalyst.
The optional weak ammonia of precipitant of step (2), sodium carbonate liquor, sodium bicarbonate solution, dilute potassium hydroxide solution etc., preferably
Weak ammonia, sodium carbonate liquor.In step (3) aluminium oxide consumption is total catalyst weight 10～40%, preferably 20%～30%.
After catalyst in the present invention reduces in reducing gas (such as H2, CO etc.) atmosphere, may be used on fatty acid methyl ester and urge
Change in the reaction of Hydrogenation fatty alcohol.This catalyst activity in the reaction of fatty acid methyl ester catalytic hydrogenation fatty alcohol is the most excellent
Different, specifically comprise the following steps that
The described catalyst being used for fatty acid methyl ester catalytic hydrogenation fatty alcohol is contained in fixed reactor, before catalytic reaction also
Former, reduction pressure is 4MPa～8MPa, and reaction temperature is 200 DEG C～280 DEG C, and the flow of reducing gas is this catalyst volume
500～1000 times, the recovery time is 10～36 hours.After reduction completely just can hydrogenation reaction, reaction pressure is 4MPa～8MPa,
Temperature is 200 DEG C～250 DEG C, and mass space velocity is 0.2～0.4h-1, and hydrogen to oil volume ratio is 300-500.
As preferably, described fatty acid methyl ester is the fatty acid methyl ester of C8～C24, and the fatty alcohol of preparation is that corresponding carbon number is
The fatty alcohol of C8～C24.Under above-mentioned reaction condition, this is used for the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol at fat
Fatty acid methyl esters catalytic hydrogenation produces in the reaction of fatty alcohol, shows catalysis activity and the stability of excellence, anti-through the long period
Ying Hou, still has good activity.
Compared with the prior art, advantage of the present invention is as follows:
Present invention copper oxide in the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol is main catalytic active component, oxidation
Zinc is cocatalyst component, and aluminium oxide is cocatalyst component and carrier.Synergism between each component, shows very well
Catalysis selectivity active, fine and good stability.And the present invention is for fatty acid methyl ester catalytic hydrogenation fatty alcohol
Components of Catalysts kind is less, each component effect on environment, pollute the least, there is good environmental benefit.The present invention uses
Catalyst in fatty acid methyl ester catalytic hydrogenation fatty alcohol is highly suitable for fatty acid methyl ester catalytic hydrogenation fatty alcohol technique, easily
Using in industrialization promotion, prospects for commercial application is fine.
Owing to there being partial oxidation aluminum to play in the preparation method of the catalyst that the present invention is used for fatty acid methyl ester catalytic hydrogenation fatty alcohol
Carrier function, the specific surface area of catalyst of preparation is relatively big, and intensity is good, and activity is high, is not only suitable for middle pressure gas phase hydrogenation the most also
It is applicable to liquid-phase hydrogenatin.The invention reside in preparation and the application of the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol, preparation stream
Journey is simple, workable, controllability is good, it is easy to industrialized production, and economic outlook is wide.
Accompanying drawing explanation
Fig. 1 is the process chart of the embodiment of the present invention.
Detailed description of the invention
Example 1
(1) 90g copper nitrate, 35g zinc nitrate, 76 grams of aluminum nitrates are dissolved in the water, are configured to containing solute (gross weight percentage
Than) be 12% solution.
(2) after the solution stirring obtained in step (1) being warmed up to 50 DEG C, to solution dropping containing sodium carbonate (percentage by weight) 11%
Sodium carbonate liquor, the PH of solution is regulated after 8, aging 4 hours, obtains collosol and gel thing, negative-pressure vacuum extraction unit
Gel precipitate is obtained after dividing water.
(3), after the product obtained in step (2) being filtered, washing, dry, pulverize, add 10.7g aluminium oxide and
After a small amount of graphite uniformly mixes, carry out playing sheet molding.Roasting 3 hours at 500 DEG C, obtain adding for fatty acid methyl ester catalysis
The catalyst of hydrogen fatty alcohol.
The catalyst being used for fatty acid methyl ester catalytic hydrogenation fatty alcohol obtained in example 3 is taken 10g and loads fixed bed reactors
On, pressure be 5MPa, temperature be 240 DEG C, hydrogen flowing quantity be 500 times of catalyst volume under conditions of reduction reaction 24
Hour.The mixture reaction adding caprylic acid methyl ester and n-capric acid methyl ester after reduction completely prepares C8-10 mixed fatty alcohol, reaction
Condition is: pressure 5MPa, and temperature is 240 DEG C, and mass space velocity is 0.2-0.5h-1, hydrogen to oil volume ratio be 500.
At the operation average result of 60 days continuously, methyl laurate conversion ratio is 99.4%, and selectivity is 99.5%.Meanwhile, this is used for
The activity of the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol does not the most decline, and indicates this catalyst stability preferable.
Example 2
(1) 100g copper nitrate, 40g zinc nitrate, 80 grams of aluminum nitrates are dissolved in the water, are configured to containing solute (gross weight hundred
Proportion by subtraction) be 15% solution.
(2) after the solution stirring obtained in step (1) being warmed up to 50 DEG C, to solution dropping containing sodium carbonate (percentage by weight) 10%
Sodium carbonate liquor, the PH of solution is regulated after 10, aging 4 hours, obtains collosol and gel thing, negative-pressure vacuum extraction unit
Gel precipitate is obtained after dividing water.
(3) after the product obtained in step (2) being filtered, washing, dry, pulverize, add 11g aluminium oxide, few
After amount graphite uniformly mixes, carry out playing sheet molding.Roasting 4 hours at 400 DEG C, obtain for fatty acid methyl ester catalytic hydrogenation
The catalyst of fatty alcohol processed.
The catalyst being used for fatty acid methyl ester catalytic hydrogenation fatty alcohol obtained in example 1 is taken 10g and loads fixed bed reactors,
Pressure be 6MPa, temperature be 250 DEG C, hydrogen flowing quantity be 500 times of catalyst volume under conditions of reduction reaction 24 hours.
Adding methyl laurate reaction after reduction completely and prepare fatty alcohol, reaction condition is: pressure 6MPa, and temperature is 220 DEG C, quality
Air speed is 0.2-0.5h-1, hydrogen to oil volume ratio be 500.
At the operation average result of 60 days continuously, methyl laurate conversion ratio is 99.7%, and selectivity is 99.8%.Meanwhile, this is used for
The activity of the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol does not the most decline, and indicates this catalyst stability preferable.
Example 3
(1) 120g copper nitrate, 50g zinc nitrate, 90 grams of aluminum nitrates are dissolved in the water, are configured to containing solute (gross weight hundred
Proportion by subtraction) be 20% solution.
(2) after the solution stirring obtained in step (1) being warmed up to 55 DEG C, to solution dropping containing sodium carbonate (percentage by weight) 12%
Sodium carbonate liquor, the PH of solution is regulated after 9, aging 5 hours, obtains collosol and gel thing, negative-pressure vacuum extraction unit
Gel precipitate is obtained after dividing water.
(3), after the product obtained in step (2) being filtered, washing, dry, pulverize, add 11.6g aluminium oxide and
After a small amount of graphite uniformly mixes, carry out playing sheet molding.Roasting 4 hours at 450 DEG C, obtain adding for fatty acid methyl ester catalysis
The catalyst of hydrogen fatty alcohol.
The catalyst being used for fatty acid methyl ester catalytic hydrogenation fatty alcohol obtained in example 2 is taken 10g and loads fixed bed reactors,
Pressure be 6MPa, temperature be 260 DEG C, hydrogen flowing quantity be 500 times of catalyst volume under conditions of reduction reaction 24 hours.
The mixture reaction adding methyl laurate and 14 carbon fatty acid methyl ester after reduction completely prepares C12-14 mixed fatty alcohol, reaction
Condition is: pressure 6MPa, and temperature is 260 DEG C, and mass space velocity is 0.2-0.5h-1, hydrogen to oil volume ratio be 500.
At the operation average result of 60 days continuously, methyl laurate conversion ratio is 99.2%, and selectivity is 99.5%.Meanwhile, this is used for
The activity of the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol does not the most decline, and indicates this catalyst stability preferable.
Example 4
(1) 130g copper nitrate, 50g zinc nitrate, 90 grams of aluminum nitrates are dissolved in the water, are configured to containing solute (gross weight hundred
Proportion by subtraction) be 20% solution.
(2) after the solution stirring obtained in step (1) being warmed up to 55 DEG C, to solution dropping containing sodium carbonate (percentage by weight) 13%
Sodium carbonate liquor, the PH of solution is regulated after 10, aging 5 hours, obtains collosol and gel thing, negative-pressure vacuum extraction unit
Gel precipitate is obtained after dividing water.
(3) after the product obtained in step (2) being filtered, washing, dry, pulverize, add 12g aluminium oxide and few
After amount graphite uniformly mixes, carry out playing sheet molding.Roasting 4 hours at 500 DEG C, obtain for fatty acid methyl ester catalytic hydrogenation
The catalyst of fatty alcohol processed.
The catalyst being used for fatty acid methyl ester catalytic hydrogenation fatty alcohol obtained in example 4 is taken 10g and loads fixed bed reactors
On, pressure be 7MPa, temperature be 270 DEG C, hydrogen flowing quantity be 500 times of catalyst volume under conditions of reduction reaction 24
Hour.The mixture reaction adding C16 fatty acid methyl ester and C18 fatty acid methyl ester after reduction completely prepares the mixing of C16-18
Fatty alcohol, reaction condition is: pressure 7MPa, and temperature is 270 DEG C, and mass space velocity is 0.2-0.5h-1, and hydrogen to oil volume ratio is
500。
At the operation average result of 60 days continuously, methyl laurate conversion ratio is 99.7%, and selectivity is 99.6%.Meanwhile, should
Activity for the catalyst of fatty acid methyl ester catalytic hydrogenation fatty alcohol does not the most decline, and indicates this catalyst stability relatively
Good.
Claims (9)
1. the catalyst pressing liquid-phase hydrogenatin fatty alcohol be applicable to fatty acid methyl ester, it is characterised in that: described catalyst is by following
Component (percentage by weight) forms:
Copper oxide 10%～60%；
Zinc oxide 5%～40%；
Aluminium oxide 0%～80%.
2. catalyst as claimed in claim 1, it is characterised in that: described catalyst is made up of following components (percentage by weight):
Copper oxide 10%～60%；
Zinc oxide 5%～40%；
Aluminium oxide 20%～60%.
3. catalyst as claimed in claim 1, it is characterised in that: described catalyst is made up of following components (percentage by weight):
Copper oxide 30%～60%；
Zinc oxide 10%～30%；
Aluminium oxide 20%～60%.
4. a preparation method for catalyst, comprises the following steps:
(1) preparation (total weight percent) Han solute is the soluble copper salt of 5%-30%, soluble zinc salt, soluble aluminum saline solution,
Obtain base fluid；
(2), after the base fluid obtained in step (1) stirring being warmed up to 50 DEG C～100 DEG C, precipitant is dripped to base fluid, by base fluid
PH regulates to 7～10, aging 2～3 hours, is precipitated product；Described precipitant be selected from weak ammonia, sodium carbonate liquor,
At least one in sodium bicarbonate solution, dilute potassium hydroxide solution；
(3), after the precipitated product obtained in step (2) being filtered, washing, dry, pulverize, with quantitative aluminium oxide,
After a small amount of graphite uniformly mixes, aluminium oxide consumption is the 10～40% of total catalyst weight, carries out playing sheet molding, at 400 DEG C～600 DEG C
Lower roasting 2～4 hours, obtain catalyst prod.
5. method for preparing catalyst as claimed in claim 4, it is characterised in that: the optional weak ammonia of precipitant of described step (2) and
At least one in sodium carbonate liquor.
6. method for preparing catalyst as claimed in claim 4, it is characterised in that: the aluminium oxide consumption in described step (3) is catalysis
The 20%～30% of agent gross weight.
7. the method during the catalyst described in claim 1 is applied to the reaction of fatty acid methyl ester catalytic hydrogenation fatty alcohol, including following
Step:
(1) step that described catalyst is reduced in reducing gas atmosphere；
(2) being contained on fixed reactor by described catalyst, the pre reduction of catalytic reaction, reduction pressure is 4MPa～8MPa, instead
Answering temperature is 200 DEG C～280 DEG C, and the flow of reducing gas is 500～1000 times of this catalyst volume, and the recovery time is 10～36
Hour.After reduction completely just can hydrogenation reaction, reaction pressure is 4MPa～8MPa, and temperature is 200 DEG C～250 DEG C, mass space velocity
Being 0.2～0.4h-1, hydrogen to oil volume ratio is 300-500.
8. method as claimed in claim 7, it is characterised in that: described reducing gas is at least one in H2 and CO.
9. method as claimed in claim 7, it is characterised in that: described fatty acid methyl ester is the fatty acid methyl ester of C8～C24, preparation
Fatty alcohol be corresponding carbon number be the fatty alcohol of C8～C24.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510131972.9A CN106140172A (en) | 2015-03-24 | 2015-03-24 | A kind of catalyst pressing liquid-phase hydrogenatin fatty alcohol be applicable to fatty acid methyl ester |
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| CN201510131972.9A CN106140172A (en) | 2015-03-24 | 2015-03-24 | A kind of catalyst pressing liquid-phase hydrogenatin fatty alcohol be applicable to fatty acid methyl ester |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404919A (en) * | 2018-03-20 | 2018-08-17 | 天津大学 | Copper C catalyst and preparation method thereof for esters liquid-phase hydrogenatin synthetic fatty alcohol |
| CN111318314A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Pretreatment method of fatty acid non-hydroconversion catalyst |
| GB2622667A (en) * | 2022-09-23 | 2024-03-27 | Johnson Matthey Plc | Copper-containing hydrogenation catalysts for the hydrogenolysis of esters |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0241760A2 (en) * | 1986-03-29 | 1987-10-21 | Henkel Kommanditgesellschaft auf Aktien | Catalyst and process for the catalytic hydrogenation of fatty acid methyl esters in a fixed bed |
| CN101633602A (en) * | 2008-07-24 | 2010-01-27 | 上海中远化工有限公司 | Method for preparing fatty alcohol through fixed bed hydrogenation by using fatty acid methyl ester |
| CN102476056A (en) * | 2012-02-28 | 2012-05-30 | 浙江嘉化能源化工股份有限公司 | Catalyst used in fatty alcohol production with fatty acid methyl ester catalyzed hydrogenation technology, preparation method thereof, and application thereof |
-
2015
- 2015-03-24 CN CN201510131972.9A patent/CN106140172A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0241760A2 (en) * | 1986-03-29 | 1987-10-21 | Henkel Kommanditgesellschaft auf Aktien | Catalyst and process for the catalytic hydrogenation of fatty acid methyl esters in a fixed bed |
| CN101633602A (en) * | 2008-07-24 | 2010-01-27 | 上海中远化工有限公司 | Method for preparing fatty alcohol through fixed bed hydrogenation by using fatty acid methyl ester |
| CN102476056A (en) * | 2012-02-28 | 2012-05-30 | 浙江嘉化能源化工股份有限公司 | Catalyst used in fatty alcohol production with fatty acid methyl ester catalyzed hydrogenation technology, preparation method thereof, and application thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108404919A (en) * | 2018-03-20 | 2018-08-17 | 天津大学 | Copper C catalyst and preparation method thereof for esters liquid-phase hydrogenatin synthetic fatty alcohol |
| CN111318314A (en) * | 2018-12-13 | 2020-06-23 | 中国石油化工股份有限公司 | Pretreatment method of fatty acid non-hydroconversion catalyst |
| CN111318314B (en) * | 2018-12-13 | 2023-01-10 | 中国石油化工股份有限公司 | Pretreatment method of fatty acid non-hydroconversion catalyst |
| GB2622667A (en) * | 2022-09-23 | 2024-03-27 | Johnson Matthey Plc | Copper-containing hydrogenation catalysts for the hydrogenolysis of esters |
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