CN110615738A - Epoxy fatty acid methyl ester hydrogenation modification process and hydroxyl-containing saturated fatty acid methyl ester - Google Patents

Epoxy fatty acid methyl ester hydrogenation modification process and hydroxyl-containing saturated fatty acid methyl ester Download PDF

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Publication number
CN110615738A
CN110615738A CN201810629212.4A CN201810629212A CN110615738A CN 110615738 A CN110615738 A CN 110615738A CN 201810629212 A CN201810629212 A CN 201810629212A CN 110615738 A CN110615738 A CN 110615738A
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China
Prior art keywords
methyl ester
fatty acid
acid methyl
epoxy
hydrogenation
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CN201810629212.4A
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Chinese (zh)
Inventor
潘鹤潮
陈文�
蔡熙扬
陈武渊
侯君辉
卢志敏
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Guangzhou Daily Chemical Industry Research Institute Co ltd
Guangzhou Lonkey Industrial Co ltd
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Guangzhou Daily Chemical Industry Research Institute Co ltd
Guangzhou Lonkey Industrial Co ltd
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Priority to CN201810629212.4A priority Critical patent/CN110615738A/en
Publication of CN110615738A publication Critical patent/CN110615738A/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01JCHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J23/00Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
    • B01J23/70Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
    • B01J23/74Iron group metals
    • B01J23/755Nickel
    • B01J35/31
    • B01J35/615
    • B01J35/633
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00Preparation of carboxylic acid esters
    • C07C67/30Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/317Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by splitting-off hydrogen or functional groups; by hydrogenolysis of functional groups

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Fats And Perfumes (AREA)

Abstract

The invention discloses a hydrogenation modification process of epoxy fatty acid methyl ester. Carrying out hydrogenation process treatment on epoxy fatty acid methyl ester to obtain saturated fatty acid methyl ester containing hydroxyl; wherein the reaction temperature of the hydrogenation process is 100-150 ℃, the reaction pressure is less than or equal to 4MPa, and the reaction time is 1-4 hours; the catalyst in the hydrogenation process comprises the effective component of metallic nickel, and the carrier component of the catalyst is alumina. The invention also discloses the saturated fatty acid methyl ester containing hydroxyl obtained by the process. Compared with the prior art, the method has the advantages that although saturated fatty acid methyl ester can be obtained only by one more epoxy fatty acid methyl ester synthesis process, the finally obtained saturated fatty acid methyl ester containing hydroxyl has special efficacy, so that higher economic benefit exists in the whole surfactant production process.

Description

Epoxy fatty acid methyl ester hydrogenation modification process and hydroxyl-containing saturated fatty acid methyl ester
Technical Field
The invention belongs to the technical field of oil industrial production, and particularly relates to a hydrogenation modification process of epoxy fatty acid methyl ester and saturated fatty acid methyl ester containing hydroxyl.
Background
At present, anionic surfactant fatty acid methyl ester sulfonate MES and nonionic surfactant fatty acid methyl ester ethoxylate FMEE commonly used in the daily chemical industry are mainly synthesized by adopting saturated fatty acid methyl ester. The saturated fatty acid methyl ester is synthesized by using unsaturated fatty acid methyl ester containing carbon-carbon double bonds as a raw material through hydrogenation reaction, and the oxidation resistance stability of the fatty acid methyl ester is improved while the carbon-carbon double bonds are eliminated.
Epoxy fatty acid methyl esters are generally prepared by reacting unsaturated double bonds in fatty acid methyl esters with peroxy organic acids in the presence of catalysts, and because they contain epoxy groups, they are often used as intermediates for the production of chemicals having a variety of industrial uses. Although the iodine value in the product index of the epoxy methyl ester is reduced and the degree of unsaturation of a carbon chain is also reduced, the ring opening of the epoxy fatty acid methyl ester influences the synthesis of a target product, so that no published research data reports an industrial process for preparing a surfactant product by using the epoxy fatty acid methyl ester as a production raw material.
Disclosure of Invention
The first purpose of the invention is to provide a hydrogenation modification process of epoxidized fatty acid methyl ester, aiming at the defects of the prior art, so that the epoxidized fatty acid methyl ester can be suitable for preparing a surfactant product.
The second purpose of the invention is to provide the saturated fatty acid methyl ester containing hydroxyl prepared by the process.
In order to achieve the first purpose, the invention adopts the following technical scheme:
the hydrogenation modification process of the epoxy fatty acid methyl ester comprises the steps of carrying out hydrogenation process treatment on the epoxy fatty acid methyl ester to obtain saturated fatty acid methyl ester containing hydroxyl; wherein the reaction temperature of the hydrogenation process is 100-150 ℃, the reaction pressure is less than or equal to 4MPa, and the reaction time is 1-4 hours; the catalyst in the hydrogenation process comprises the effective component of metallic nickel, and the carrier component of the catalyst is alumina.
Further, the epoxy fatty acid methyl ester is a fatty acid methyl ester containing an epoxy group having at least one three-membered ring,
preferably, the epoxidized fatty acid methyl ester is any one of epoxidized soybean oil methyl ester, epoxidized palm oil methyl ester, epoxidized cottonseed oil methyl ester, epoxidized rapeseed oil methyl ester, epoxidized oleic acid methyl ester, epoxidized castor oil methyl ester and epoxidized hogwash oil methyl ester, or a combination of at least two of them.
Preferably, the epoxy value of the epoxidized fatty acid methyl ester is 3 to 8%.
Preferably, the BET specific surface area of the catalyst used in the hydrogenation process is 100-200m2The pore volume is 0.4-0.5mL/g, the compaction density is 700-3The average grain diameter is 2.0-3.0 mm; the mass content of the metallic nickel in the catalyst is 15-25%; the average size of the alumina is 1.0-2.0 mm.
In order to achieve the second purpose, the invention adopts the following technical scheme:
saturated fatty acid methyl ester containing hydroxyl is prepared by the hydrogenation modification process of the epoxy fatty acid methyl ester.
Compared with the prior art, the method has the advantages that although saturated fatty acid methyl ester can be obtained only by one more epoxy fatty acid methyl ester synthesis process, the finally obtained saturated fatty acid methyl ester containing hydroxyl has special efficacy, so that higher economic benefit exists in the whole surfactant production process.
Detailed Description
The invention relates to a hydrogenation modification process of epoxy fatty acid methyl ester, which is to carry out hydrogenation process treatment on the epoxy fatty acid methyl ester to obtain saturated fatty acid methyl ester containing hydroxyl.
The epoxy fatty acid methyl ester is a general commercial industrial product, and the product indexes are as follows:
item Standard requirements
Epoxy value (%) ≥3.0,≤8.0
Moisture Moisture (%) ≤0.5
Acid Value (mgKOH/g) ≤1
Color number color (APHA) ≤30
Iodine Value Iodine Value (g/150g) ≤5
Density (e20 ℃/cm3) 0.92-0.95
The epoxy fatty acid methyl ester meeting the product index requirements can be any one of epoxy soybean oil methyl ester, epoxy palm oil methyl ester, epoxy cottonseed oil methyl ester, epoxy rapeseed oil methyl ester, epoxy oleic acid methyl ester, epoxy castor oil methyl ester and epoxy hogwash oil methyl ester, or the combination of at least two of the epoxy soybean oil methyl ester, the epoxy palm oil methyl ester, the epoxy cottonseed oil methyl ester, the epoxy rapeseed oil methyl ester, the epoxy oleic acid methyl ester, the epoxy castor.
The hydrogenation modification process has the following process key points:
1. hydrogenation catalyst:
the catalyst has effective component of metal nickel and carrier component of alumina. Wherein, the metallic nickel is granular, and the mass content in the catalyst is 15-25%, preferably 20%. The alumina is solid particles with an average size of 1.0-2.0 mm.
The BET specific surface area of the catalyst is 100-2The pore volume is 0.4-0.5mL/g, the compaction density is 700-3The average particle diameter is 2.0-3.0 mm.
2. A hydrogenation reactor:
a batch kettle type reactor or a tower type continuous reactor can be adopted.
3. The technological parameters are as follows:
internal pressure of the reactor: 2-4 Mpa.
The temperature of the reaction mass is 100-150 ℃.
The residence time of the reaction mass is 1-4 hours.
In the process, the reaction temperature of the hydrogenation process is low, so that the chain scission of methyl ester in epoxy fatty acid methyl ester can be avoided to generate fatty acid and methanol; the catalyst carrier alumina is an acidic carrier, which is beneficial to ring opening of an epoxy group and improvement of the reaction rate; the obtained saturated fatty acid methyl ester containing hydroxyl has higher saturation, the iodine value of the product is lower than 0.5, and the epoxy value is lower than 0.1%.
The following illustrates an example of the synthesis of a hydroxyl-containing saturated fatty acid methyl ester by the process of hydrogenating and modifying an epoxy fatty acid methyl ester:
example 1
Adding 200 g of epoxy palm oil methyl ester (epoxy value is 3.5%) and 10 g of catalyst into 500ml of high-pressure reaction kettle with an electric stirring device, a measuring thermometer and a measuring kettle in sequence, stirring and heating to 90 ℃, introducing high-purity hydrogen, maintaining the pressure of 3MPa, continuously heating to 145 ℃, reacting for 1.5 hours, stopping, and filtering the catalyst to obtain the refined saturated palm methyl ester containing hydroxyl.
Example 2
200 g of epoxidized soybean oil methyl ester (epoxy value is 3.5%) and 30 g of catalyst are sequentially added into a 500ml high-pressure reaction kettle with an electric stirring device, a measuring thermometer and a measuring kettle, the temperature is raised to 90 ℃ by stirring, high-purity hydrogen is introduced, the pressure is maintained at 3MPa, the temperature is continuously raised to 130 ℃, the reaction is stopped after 2.5 hours, and the catalyst is filtered to obtain the refined saturated soybean oil methyl ester containing hydroxyl.
Example 3
200 g of rapeseed oil methyl ester and epoxy hogwash oil methyl ester 1 are sequentially added into a 500ml reaction kettle with an electric stirring device, a measuring thermometer and a high-pressure reaction kettle: 1 (epoxy value is 5.5 percent) and 30 g of catalyst are stirred and heated to 90 ℃, high-purity hydrogen is introduced, the pressure of 3MPa is maintained, the temperature is continuously raised to 125 ℃, the reaction is stopped after 3.5 hours, and the catalyst is filtered to obtain the refined saturated fatty acid methyl ester containing hydroxyl.
Example 4
Adding 200 g of epoxy methyl oleate raw material (the epoxy value is 7.5%) and 25 g of catalyst into a 500ml high-pressure reaction kettle with an electric stirring device, a measuring thermometer and a measuring thermometer in sequence, stirring and heating to 90 ℃, introducing high-purity hydrogen, maintaining the pressure of 3MPa, continuously heating to 120 ℃, reacting for 4.0 hours, stopping, and filtering the catalyst to obtain the refined saturated fatty acid methyl ester containing hydroxyl.
Example 5
200 g of epoxy castor oil methyl ester (the epoxy value is 5.0%) and 10 g of catalyst are sequentially added into a 500ml high-pressure reaction kettle with an electric stirring device, a measuring thermometer and a measuring device, the temperature is raised to 90 ℃ by stirring, high-purity hydrogen is introduced, the pressure is maintained at 4.0MPa, the temperature is continuously raised to 120 ℃, the reaction is stopped after 2.0 hours, and the catalyst is filtered to obtain the refined saturated castor oil methyl ester containing hydroxyl.
Example 6
200 g of epoxy cottonseed oil methyl ester and epoxy soybean oil 4 are sequentially added into a 500ml autoclave with an electric stirring device, a measuring thermometer and a high-pressure reaction kettle: 1 (epoxy value is 4.5 percent) and 15 g of catalyst are stirred and heated to 90 ℃, high-purity hydrogen is introduced, the pressure of 2.0MPa is maintained, the temperature is continuously raised to 150 ℃, the reaction is stopped after 2.5 hours, and the catalyst is filtered to obtain the refined saturated fatty acid methyl ester containing hydroxyl.
Example 7
200 g of epoxy hogwash oil methyl ester and epoxy methyl oleate 3 are sequentially added into a 500ml reaction kettle with an electric stirring device, a measuring thermometer and a high pressure reaction kettle: 2 (epoxy value is 6.5 percent) and 15 g of catalyst are stirred and heated to 90 ℃, high-purity hydrogen is introduced, the pressure of 4.0MPa is maintained, the temperature is continuously raised to 150 ℃, the reaction is stopped after 2.5 hours, and the catalyst is filtered, thus obtaining the refined saturated fatty acid methyl ester containing hydroxyl.
The saturated fatty acid methyl ester containing hydroxyl obtained by the hydrogenation modification process of the epoxy fatty acid methyl ester has special effect and can promote the reaction rate of synthesizing the surfactant. The following table illustrates:
remarking: sulfonation process: the method refers to a general sulfonation reaction process containing hydroxyl, which is different from a sulfonation process for synthesizing a-sulfo saturated fatty acid methyl ester salt, wherein the saturated fatty acid methyl ester needs a complex sulfonation process such as sulfonation-aging-reesterification-bleaching-neutralization and the like.
Ethoxylation process: the method refers to a general ethoxylation process containing hydroxyl, and is different from a fatty acid methyl ester insertion or mosaic type fatty acid methyl ester ethoxylation compound process, a special catalyst is needed, and only a general ethoxylation catalyst is needed, such as sodium hydroxide, potassium hydroxide, sodium methoxide and the like.
The saturated fatty acid methyl ester containing hydroxyl obtained by the epoxy fatty acid methyl ester hydrogenation modification process can obtain the surfactant with a structure different from the conventional structure by a relatively simple process for synthesizing the surfactant.

Claims (6)

1. The hydrogenation modification process of the epoxy fatty acid methyl ester is characterized in that the epoxy fatty acid methyl ester is subjected to hydrogenation process treatment to obtain saturated fatty acid methyl ester containing hydroxyl; wherein the reaction temperature of the hydrogenation process is 100-150 ℃, the reaction pressure is less than or equal to 4MPa, and the reaction time is 1-4 hours; the catalyst in the hydrogenation process comprises the effective component of metallic nickel, and the carrier component of the catalyst is alumina.
2. The process for hydrogenating and modifying epoxy fatty acid methyl ester according to claim 1, wherein the epoxy fatty acid methyl ester is a fatty acid methyl ester having at least one epoxy group having a three-membered ring.
3. The process for hydrogenation modification of epoxy fatty acid methyl ester according to claim 2, wherein the epoxy fatty acid methyl ester is any one of epoxy soybean oil methyl ester, epoxy palm oil methyl ester, epoxy cottonseed oil methyl ester, epoxy rapeseed oil methyl ester, epoxy oleic acid methyl ester, epoxy castor oil methyl ester and epoxy hogwash oil methyl ester, or a combination of at least two of them.
4. The hydrogenated modification process of epoxidized fatty acid methyl ester according to claim 1, wherein the epoxidized fatty acid methyl ester has an epoxy value of 3-8%.
5. The hydrogenation modification process of epoxidized fatty acid methyl ester according to claim 1, wherein the BET specific surface area of the catalyst used in the hydrogenation process is 100-200m2The pore volume is 0.4-0.5mL/g, the compaction density is 700-3The average grain diameter is 2.0-3.0 mm; the mass content of the metallic nickel in the catalyst is 15-25%; the average size of the alumina is 1.0-2.0 mm.
6. Saturated fatty acid methyl esters containing hydroxyl groups, characterized in that they are prepared by the process for the hydrogenation modification of epoxidized fatty acid methyl esters according to any one of claims 1 to 5.
CN201810629212.4A 2018-06-19 2018-06-19 Epoxy fatty acid methyl ester hydrogenation modification process and hydroxyl-containing saturated fatty acid methyl ester Pending CN110615738A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112973697A (en) * 2021-03-01 2021-06-18 广东工业大学 Catalyst for hydrogenation reaction and synthesis method for catalyzing fatty acid methyl ester by using catalyst

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617839A1 (en) * 1987-07-06 1989-01-13 Cetiom Process for the catalytic manufacture of saturated fatty monohydroxy acids or of derivatives of the latter
DE4433958A1 (en) * 1994-09-21 1996-03-28 Henkel Kgaa Hydroxy gp.-protected ring-opening prods. of epoxidised fats
US20090118535A1 (en) * 2005-08-25 2009-05-07 Takaaki Araki Process for producing optically active ester
CN106467462A (en) * 2016-09-20 2017-03-01 江南大学 A kind of synthesis technique of branched chain fatty acid methyl ester

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2617839A1 (en) * 1987-07-06 1989-01-13 Cetiom Process for the catalytic manufacture of saturated fatty monohydroxy acids or of derivatives of the latter
DE4433958A1 (en) * 1994-09-21 1996-03-28 Henkel Kgaa Hydroxy gp.-protected ring-opening prods. of epoxidised fats
US20090118535A1 (en) * 2005-08-25 2009-05-07 Takaaki Araki Process for producing optically active ester
CN106467462A (en) * 2016-09-20 2017-03-01 江南大学 A kind of synthesis technique of branched chain fatty acid methyl ester

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112973697A (en) * 2021-03-01 2021-06-18 广东工业大学 Catalyst for hydrogenation reaction and synthesis method for catalyzing fatty acid methyl ester by using catalyst

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