CN105498835B - The synthetic method of fatty acid methyl ester alkoxylating catalyst - Google Patents
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Abstract
The present invention relates to the synthetic method of fatty acid methyl ester alkoxylating catalyst, solves the problems, such as that EO profile exponents are low in catalyst reaction product present in prior art.Using comprising the following steps：(1) it is 1 by mol ratio:(1~10) ionic liquid and C1~C4Alcohol be mixed to get mixture i；(2) alkali salt and II B races metal salt are added in mixture i and are mixed to get mixture ii, wherein alkali salt, II B races metal salt and mixture i mass ratios are (0.1~0.3):(0.01~0.10):1；(3) pH to 5~8 for adjusting mixture ii obtains mixture iii；(4) mixture iii is dried in vacuo below 100 DEG C and obtains the catalyst；Described ionic liquid is the technical scheme of imidazole salt ionic liquid, preferably solves the technical problem, available for fatty acid methyl ester oxyalkylation reaction.
Description
Technical field
The present invention relates to a kind of synthetic method for fatty acid methyl ester alkoxylating catalyst.
Background technology
Fatty acid methyl ester ethoxy compound (ethoxylated fatty acid methyl esters), referred to as
FMEE, it is a kind of ester-ether type nonionic surfactant of double end-blockings.Because fatty acid methyl ester ethoxy compound one end has
- the OCH similar to grease3, according to the principle of similar compatibility, compared with traditional fatty acid polyether, aliphatic alcohol polyether etc., have
Stronger dirt-removing power, there is good water solubility, the advantages that fusing point is low, and emulsion dispersion ability is strong, and foam is few；The other product easily drops
Solution, it is a kind of really environment-friendly type surfactant.Fatty acid methyl ester compound is widely applied to leather, weaving, cosmetic
In conduct industry.FMEE, close to TX, NP and OP series containing APEO, is strict with to environmental protection abroad in various performances
Under background, using FMEE instead of the toy of TX or NP processing, floor, textile garment etc., it is possible to reduce caused by exit procedure
Trade dispute.
Due to fatty acid methyl ester unlike aliphatic acid, fatty alcohol or fatty amine etc. contain active hydrogen, therefore urged with traditional soda acid
Agent is difficult ethoxylation (ethyleneoxide addition, i.e. EO addition), i.e., enabled, conversion ratio is also low, and product impurity content is high, at present
Mostly using bimetallic or poly-metal deoxide or salt as catalyst.Reaction temperature is 160~180 DEG C, and reaction pressure exists
0.3MPa or so, catalyst amount 0.1~1.0%
United States Patent (USP) US6008392 (Process for Preparing Alkoxylated Fatty Acid Alkyl
Esters a kind of fatty acid methyl ester ethoxylation catalyst) is disclosed, catalyst mainly based on Al/Mg hydrotalcites, adds simultaneously
Add a small amount of LiOH or SnO2Form.For methyl laurate ethoxylation, LiOH or SnO is not added in discovery2When, unreacted EO
Content more than 1.5%, EO profile exponents [EO adductions number account in total component in the component of the scopes of n ± 2 (not including raw alcohol and
PEG content (wherein n is the EO adductions number of major constituent))], less than 70%；Add LiOH or SnO2Preferably, but catalyst is used
For amount all more than 1.0%, reaction speed is slow.
United States Patent (USP) US5220246 (Process for Alkoxylation of Esters and Products
Produced Therefrom) disclose a kind of active alkoxide calcium aluminium composite catalyst and be used for coconut acid methylester ethoxylation,
The average adduct numbers of EO are 8, and polyethylene glycol is higher than 2.0% in product, and unreacted fatty acid methyl ester is more than 0.5%, and catalyst is used
Measure as 1.0%.
The weak point of the catalyst of above-mentioned prior art is：EO profile exponents are low in product, accessory substance is more.
The content of the invention
One of technical problems to be solved by the invention are second present in prior art after catalyst ethoxylation
A kind of the problem of EO profile exponents are low in epoxide product, accessory substance is more, there is provided new fatty acid methyl ester ethoxylation catalyst
Synthetic method, there is this method obtained catalyst to be used for during fatty acid methyl ester ethoxylation EO in ethoxylated products
The characteristics of narrowly distributing, accessory substance are few.
The two of the technical problems to be solved by the invention are the catalysis that one of above-mentioned technical problem synthetic method obtains
Agent.
The three of the technical problems to be solved by the invention are two catalyst of above-mentioned technical problem in fatty acid methyl ester
Application in alkoxylate.
To solve one of above-mentioned technical problem, technical scheme is as follows：Fatty acid methyl ester alkoxylating catalyst
Synthetic method, including following preparation process：
(1) it is 1 by mol ratio:(1~10) ionic liquid and C1~C4Alcohol be mixed to get mixture i；For ease of mixing,
The viscosity of ionic liquid can be reduced by way of heating；
(2) alkali salt and II B races metal salt are added in mixture i and are mixed to get mixture ii, wherein alkaline earth
Metal salt, II B races metal salt and mixture i mass ratios are (0.1~0.3):(0.01~0.10):1；
(3) mixture iii is obtained with regulation mixture ii pH to 5~8；
(4) mixture iii is dried in vacuo below 100 DEG C and obtains the catalyst；
Described ionic liquid is imidazole salt ionic liquid.To accelerate the mixing of above-mentioned steps (1) and/or step (2)
Speed, preferably mixed under heating state.In above-mentioned technical proposal, when step (3) adjusts mixture ii pH, it is preferred to use dense
Sulfuric acid, it for the 98wt% concentrated sulfuric acid is pH adjusting agent most preferably to use concentration.
In above-mentioned technical proposal, the ionic liquid general structure (I) is as follows：
Wherein R1And R2Independently it preferably is selected from H or C1~C10Alkyl；X preferably is selected from F, Cl, Br, I, BF4、CF3SO3、 PF6Or
CH3COO.As an example, described ionic liquid can for example be but not limited to 1- ethyl-3-methylimidazoles bromide, the positive fourths of 1-
Base -3- methylimidazole bromides.
In above-mentioned technical proposal, described alcohol can be monohydric alcohol.As an example, described alcohol can be selected from methanol, second
Alcohol, normal propyl alcohol, isopropanol, n-butyl alcohol, 2- butanol, 2- methyl isophthalic acids-propyl alcohol or 2- methyl-2-propanols.
In above-mentioned technical proposal, described alcohol is C2~C4Dihydric alcohol.As an example, described alcohol can be selected from second two
Alcohol, 1,2- propane diols, 1,3-PD.
In above-mentioned technical proposal, the alkali salt and II B races metal salt preferably independently are selected from nitrate, acetate or salt
Hydrochlorate, more preferably acetate.
In above-mentioned technical proposal, described alkaline-earth metal preferably is selected from least one of magnesium, calcium, strontium and barium.Described alkali
Than individually including magnesium without good including barium effect earth metal includes magnesium and barium simultaneously when, also than individually including barium without being imitated including magnesium
Fruit is good.
In above-mentioned technical proposal, the II B races metal salt preferably is selected from least one of zinc, cadmium, mercury.The II B races gold
Than individually including zinc without good including cadmium effect category includes zinc and cadmium simultaneously when, also than individually including cadmium without including zinc effect
It is good.
As the most preferable technical scheme：Described alkaline-earth metal includes magnesium and barium simultaneously, and the II B races metal is same
When include zinc and cadmium.
In above-mentioned technical proposal, step (1) intermediate ion liquid and C1~C4Alcohol mol ratio be preferably 1:(2.5~5).Step
Suddenly the preferred pH of pH value in (3) is more than or equal to 5 and less than 7, and more preferably pH is 5.5~6.5.Institute in step (2) in step (1)
It is preferably 60~120 DEG C to state heating-up temperature；Heat time is preferably 10~60min.Vacuum drying temperature described in step (4)
Preferably 50 DEG C less than 100 DEG C, the dry time is preferably 10~60min.
The catalyst of the present invention is evaluated according to following process：By 100~300g fatty acid methyl esters and catalyst (for
0.1~0.8wt% of fatty acid methyl ester) add in 1 liter of stainless steel autoclave with stirring slurry, it is warming up to 80 under stirring
DEG C, 10min is vacuumized, removes moisture and low-boiling point material；Then with nitrogen displacement at least 3 times；In 150~180 DEG C of temperature and
Under 0.3~0.6MPa of pressure, oxirane (EO) is continuously added dropwise to required amount；After aging 30min, lead to cooling water and carry out
Cooling, release, product is removed, weighs, analyze.
Evaluation result shows that the fatty acid methyl ester ethoxylated products EO profile exponents of catalyst of the present invention are more than 80%,
Total byproduct (polyethylene glycol or polypropylene glycol, unreacted fatty acid methyl ester) is less than 1.0wt%, and catalyst amount is less than
1.0wt% (accounts for total yield quality).Therefore catalyst provided by the invention has ethoxylated products EO profile exponents height, by-product
The characteristics of product are few.
Below by embodiment, the invention will be further elaborated.
Embodiment
【Embodiment 1】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 2g acetic anhydrides magnesium, 0.5g acetic anhydrides zinc and 100g mixtures i
In the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C, mixture ii is obtained after cooling；It is with concentration
98wt% sulfuric acid is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, and mixture iii is obtained after cooling；
By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 2】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 2g acetic anhydrides magnesium, 0.5g acetic anhydrides cadmium and 100g mixtures i
In the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C, mixture ii is obtained after cooling；It is with concentration
98wt% sulfuric acid is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, and mixture iii is obtained after cooling；
By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 3】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 2g acetic anhydrides barium, 0.5g acetic anhydrides zinc and 100g mixtures i
In the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C, mixture ii is obtained after cooling；It is with concentration
98wt% sulfuric acid is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, and mixture iii is obtained after cooling；
By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 4】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 2g acetic anhydrides magnesium, 0.5g acetic anhydrides cadmium and 100g mixtures i
In the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C, mixture ii is obtained after cooling；It is with concentration
98wt% sulfuric acid is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, and mixture iii is obtained after cooling；
By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 5】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 1g acetic anhydrides magnesium, 1g acetic anhydrides barium, 0.5g acetic anhydride zinc
With 100g mixtures i in the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C, mixture is obtained after cooling
ii；The sulfuric acid for being 98wt% with concentration is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, after cooling
To mixture iii；By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 6】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 1g acetic anhydrides magnesium, 1g acetic anhydrides barium and 0.5g acetic anhydrides
Cadmium and 100g mixtures i agitating and heating 30min at 80 DEG C, mixture are obtained after cooling in the three-necked flask with reflux condensation mode
ii；The sulfuric acid for being 98wt% with concentration is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, after cooling
To mixture iii；By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 7】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 2g acetic anhydrides magnesium and 0.3g acetic anhydrides zinc, the anhydrous vinegar of 0.2g
Sour cadmium and 100g mixture i agitating and heating 30min at 80 DEG C, is mixed in the three-necked flask with reflux condensation mode after cooling
Thing ii；The sulfuric acid for being 98wt% with concentration is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, after cooling
Obtain mixture iii；By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 8】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 2g acetic anhydrides barium and 0.3g acetic anhydrides zinc, the anhydrous vinegar of 0.2g
Sour cadmium and 100g mixture i agitating and heating 30min at 80 DEG C, is mixed in the three-necked flask with reflux condensation mode after cooling
Thing ii；The sulfuric acid for being 98wt% with concentration is added drop-wise in mixture ii under vigorous stirring, and it is 6.0 to make mixture pH, after cooling
Obtain mixture iii；By mixture iii at 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Embodiment 9】
By 2mol1- ethyl-3-methylimidazoles bromide and 6mol isopropanols in the three-necked flask with reflux condensation mode, 80 DEG C
Lower agitating and heating 30min, obtains mixture i after cooling；By 1g acetic anhydrides magnesium, 1g acetic anhydrides barium and 0.3g acetic anhydrides
Zinc, 0.2g acetic anhydrides cadmium and 100g mixtures i are in the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C,
Mixture ii is obtained after cooling；The sulfuric acid for being 98wt% with concentration is added drop-wise in mixture ii under vigorous stirring, makes mixture
PH is 6.0, and mixture iii is obtained after cooling；By mixture iii at 80 DEG C, 30min is dried in vacuo, is obtained after cooling required
Catalyst.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Comparative example 1】
By 8mol isopropanols in the three-necked flask with reflux condensation mode, agitating and heating 30min at 80 DEG C, mixed after cooling
Compound i；By 2g acetic anhydrides magnesium, 0.5g acetic anhydrides zinc and 100g mixtures i in the three-necked flask with reflux condensation mode, 80
Agitating and heating 30min at DEG C, mixture ii is obtained after cooling；The sulfuric acid for being 98wt% with concentration is added drop-wise to mixed under vigorous stirring
In compound ii, it is 6.0 to make mixture pH, and mixture iii is obtained after cooling；By mixture iii at 80 DEG C, vacuum drying
30min, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
【Comparative example 2】
By 8mol1- ethyl-3-methylimidazole bromides in the three-necked flask with reflux condensation mode, agitating and heating at 80 DEG C
30min, mixture i is obtained after cooling；By 2g acetic anhydrides magnesium, 0.5g acetic anhydrides zinc and 100g mixtures i in band returned cold
In solidifying three-necked flask, agitating and heating 30min at 80 DEG C, mixture ii is obtained after cooling；The sulfuric acid for being 98wt% with concentration exists
It is added drop-wise under strong agitation in mixture ii, it is 6.0 to make mixture pH, and mixture iii is obtained after cooling；Mixture iii is existed
At 80 DEG C, 30min is dried in vacuo, required catalyst is obtained after cooling.
Above-mentioned 1.0g catalyst is added in 100g methyl laurates, put into while stirring in 1L autoclave；It is high
Pressure kettle is warming up to 80 DEG C, is dried in vacuo 10min, is then replaced 3 times with High Purity Nitrogen, is warming up to 150 DEG C, imports EO, keeping temperature
At 150 DEG C, pressure is 144g, aging 30min to EO additions in 0.4MPa, reaction 30min, is cooled to room temperature and releases material,
244g is weighed as, obtains the lauric acid methyl ester ethoxylate that average EO adduct numbers are 7.Various materials contain in ethoxylated products
Amount is analyzed using GC-MS.
Compare for convenience, catalyst formulation is shown in Table 1, and analysis result is shown in Table 2.
The composition of 1 catalyst of the present invention of table
The ethoxylated products analyze data of table 2
Claims (9)
1. the synthetic method of fatty acid methyl ester alkoxylating catalyst, comprises the following steps：
(1) it is 1 by mol ratio:(1~10) ionic liquid and C1~C4Alcohol be mixed to get mixture i；
(2) alkali salt and II B races metal salt are added in mixture i and are mixed to get mixture ii, wherein alkaline earth gold
It is (0.1~0.3) to belong to salt, II B races metal salt and mixture i mass ratios:(0.01~0.10):1；
(3) pH to 5~8 for adjusting mixture ii obtains mixture iii；
(4) mixture iii is dried in vacuo below 100 DEG C and obtains the catalyst；
Described ionic liquid is imidazole salt ionic liquid；
The alkoxylate is ethoxylation.
2. synthetic method as claimed in claim 1, it is characterized in that the ionic liquid general structure (I) is as follows：
Wherein R1And R2It is independently selected from H or C1~C10Alkyl；X is selected from F, Cl, Br, I, BF4、CF3SO3、PF6Or CH3COO。
3. synthetic method as claimed in claim 1, it is characterized in that described alcohol is monohydric alcohol.
4. synthetic method as claimed in claim 1, it is characterized in that described alcohol is C2~C4Dihydric alcohol.
5. synthetic method as claimed in claim 1, it is characterized in that the alkali salt and II B races metal salt are independently selected from nitre
Hydrochlorate, acetate or hydrochloride.
6. synthetic method as claimed in claim 1, it is characterized in that described alkaline-earth metal in magnesium, calcium, strontium and barium extremely
Few one kind.
7. synthetic method as claimed in claim 1, it is characterized in that the II B races metal in zinc, cadmium, mercury at least one
Kind.
8. the catalyst that the synthetic method in claim 1 to 7 described in any one obtains.
9. application of the catalyst in fatty acid methyl ester ethoxylation in claim 8.
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| CN103124764A (en) * | 2010-09-30 | 2013-05-29 | 亨斯迈石油化学有限责任公司 | Surface active agents derived from biodiesel-based alkylated aromatic compounds |
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