CN105085187B - The method of preparing ethyl glycol by hydrolysis of ethylene carbonate - Google Patents
The method of preparing ethyl glycol by hydrolysis of ethylene carbonate Download PDFInfo
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Abstract
The present invention relates to a kind of method of preparing ethyl glycol by hydrolysis of ethylene carbonate, mainly solve prior art and there is resin to be easily swelled, the problem of activity decrease is fast.The present invention is by using using ethylene carbonate and water as reaction raw materials, it it is 60~180 DEG C in reaction temperature, the mol ratio of water and ethylene carbonate is 1~10, and the weight ratio of catalyst and ethylene carbonate is that under conditions of 0.005~1, raw material obtains ethylene glycol in 1~8 hour with catalyst haptoreaction；Wherein, the catalyst preferably solves the problem for the technical scheme of the nano combined quaternary ammonium resin of strong base, available in the industrial production of preparing ethyl glycol by hydrolysis of ethylene carbonate.
Description
Technical field
The present invention relates to a kind of method of preparing ethyl glycol by hydrolysis of ethylene carbonate.
Background technology
The hydrolysis of esters is a kind of important chemical reaction, is widely used in the every field of petrochemical iy produced, its middle ring
Shape carbonic ester, such as ethylene carbonate (EC), the hydrolysis of propene carbonate are even more to have very important fundamental position.
EC hydrolysis is the important step that ethylene glycol (EG) is produced by oxirane (EO) catalysis hydration two-step method.EG is one
Important Organic Chemicals is planted, is mainly used to production polyester fiber, antifreezing agent, unsaturated polyester resin, non-ionic surface and lives
Property agent, monoethanolamine and explosive etc..EG production technology is broadly divided into petrochemical industry route and non-petrochemical industry route.Have in petrochemical industry route
EO direct hydration methods and EO catalytic hydrations, direct hydration method need higher water ratio (being more than 20) just to can guarantee that higher EG
Yield, and it is higher to be consumed energy during purifying EG.EO catalytic hydrations include direct catalytic hydration and EC routes again.Directly urge
Change hydration method water than relatively low (about 5 or so), but still need evaporation and remove substantial amounts of water, and EC routes are then first with second
Alkene aoxidizes the CO2 discharged during EO processed and EC is generated in the presence of catalyst with EO for raw material, is then catalyzed by intermediate product of EC
Hydrolysis generation EG, the process water ratio, close to stoichiometric proportion 1, is the industrialization direction of EO EG from now on.
Having been used for the catalyst of annular carbonic acid esters hydrolysis at present mainly has：Alkali (soil) metal carbonate (hydrogen) salt
(US4524224,1985), Mo and W compound (JP822106631,1982；WO2009071651,2009), quaternary ammonium salt, season
Ammonium salt and ion exchange resin (EP0133763,1989；US6080897,2000；US20090156867,2009) etc..But these
More or less there is difficult, the active low, stability of catalyst separation not in catalyst system and catalyzing.
Activity and selectivity is all preferable when strong base ion exchange resin is for annular carbonic acid esters hydrolysis, but is due to that its is resistance to
Gentle swelling resistance poor performance, activity decrease very fast (Yu FP, Cai H, the He WJ, et in catalytic reaction process
al.J.Appl.Polym.Sci.,2010,115:2946~2954), this is to cause the catalyst to fail industrialized main original
Cause.
The content of the invention
The technical problems to be solved by the invention are that prior art has resin catalyst and is easily swelled, activity decrease asking soon
There is provided a kind of method of new preparing ethyl glycol by hydrolysis of ethylene carbonate for topic.This method has heatproof, swelling resistance, activity decrease
Slow the characteristics of.
In order to solve the above technical problems, the technical solution adopted by the present invention is as follows：A kind of ethylene carbonate ester hydrolysis prepares second
The method of glycol, is 60~180 DEG C in reaction temperature using ethylene carbonate and water as reaction raw materials, water and ethylene carbonate
Mol ratio is 1~10, and the weight ratio of catalyst and ethylene carbonate is that under conditions of 0.005~1, raw material is contacted instead with catalyst
Answer 1~8 hour and obtain ethylene glycol；Wherein, the catalyst is the nano combined quaternary ammonium resin of strong base.
In above-mentioned technical proposal, it is preferable that the preparation method of the nano combined quaternary ammonium resin of strong base includes following
Step：
A) auxiliary agent one is made into the water solution A that weight percent concentration is 0.5~2%, by monomer, comonomer, nanometer
Material, initiator and the wiring solution-forming B of auxiliary agent two；
Wherein, the monomer is selected from methyl methacrylate, butyl acrylate, styrene, α-methylstyrene, 4- butyl
At least one of styrene or acrylonitrile；
The comonomer is selected from ethyleneglycol dimethyacrylate, diallyl benzene, divinyl phenylmethane or two
At least one of vinyl benzene；
The nano material is selected from least one of multi-walled carbon nanotube, single-walled carbon nanotube, C60 or C70 fullerenes；
The initiator is selected from benzoyl peroxide, azodiisobutyronitrile, lauroyl peroxide or isopropyl benzene hydroperoxide
At least one of；
The auxiliary agent one in polyvinyl alcohol, gelatin, starch, methylcellulose, bentonite or calcium carbonate at least one
Kind；
The auxiliary agent two is selected from least one of aliphatic hydrocarbon, polystyrene, gasoline, aliphatic acid or paraffin；
By weight percentage, the consumption of monomer is 85~95%, and the consumption of comonomer is 2~5%, nano material
Consumption is 0.1~3%, and the consumption of initiator is 0.1~10%；The consumption of auxiliary agent one is the 150~400% of monomer consumption, is helped
The consumption of agent two is the 50~100% of monomer consumption；
B) then solution B is mixed in 60~75 DEG C of prepolymerizations 0.5~2.5 hour, is warming up to 70 by solution B with solution A
~90 DEG C react 5~15 hours, then be warming up to 90~100 DEG C react 5~15 hours；After reaction terminates, through extracting, washing, mistake
Filter, dry, sieving, obtain the complex microsphere of 0.35~0.60 millimeter of particle size range；
C) chloromethylation reagents equivalent to complex microsphere weight 200~500% are added into complex microsphere, and quite
In the zinc chloride catalyst of complex microsphere weight 20~70%, reacted 8~30 hours at 30~60 DEG C, through filtering, washing
To compound chlorine ball, drying to constant weight；The chloromethylation reagents in chloromethyl ether or 1,4- dichloro methyl butyl ethers at least
It is a kind of；
D) organic solvent equivalent to complex microsphere weight 200~700%, 200~500% are added into compound chlorine ball
Tertiary amine NR1R2R3, react 4~30 hours under reflux state, the nano combined quaternary ammonium salt tree of the chlorine type obtained after scrubbed, drying
Fat；Wherein, the organic solvent in cyanophenyl, toluene, tetrahydrofuran, dimethylformamide, chloroform or dichloroethanes extremely
Few one kind；PR1R2R3In, R1、R2、R3For methyl, ethyl, propyl group, normal-butyl, phenyl or aryl；
E) the nano combined quaternary ammonium salt tree of the strong base is obtained after the nano combined quaternary ammonium resin of chlorine type is exchanged with highly basic
Fat.
In above-mentioned technical proposal, it is preferable that the monomer is selected from styrene.
In above-mentioned technical proposal, it is preferable that the comonomer is selected from divinylbenzene.
In above-mentioned technical proposal, it is preferable that the nano material is selected from multi-walled carbon nanotube.
In above-mentioned technical proposal, it is preferable that the initiator is selected from benzoyl peroxide.
In above-mentioned technical proposal, it is preferable that the auxiliary agent one is selected from polyvinyl alcohol.
In above-mentioned technical proposal, it is preferable that the auxiliary agent two is selected from polystyrene.
In above-mentioned technical proposal, it is preferable that the highly basic is selected from NaOH, KOH, LiOH, Ca (OH)2、Sr(OH)2Or Ba
(OH)2At least one of.
In above-mentioned technical proposal, it is preferable that reaction temperature is 80~160 DEG C, the mol ratio of water and ethylene carbonate for 1~
8, the weight ratio of catalyst and ethylene carbonate is 0.01~0.5, and the reaction time is 1~6 hour.
In the inventive method, the method that the nano combined quaternary ammonium resin of chlorine type is exchanged with highly basic is for those skilled in the art
Known.Usually, it can be added into the nano combined quaternary ammonium resin of chlorine type equivalent to the nano combined quaternary ammonium salt tree of chlorine type
The highly basic of fat weight 20~200%, 200~2000% deionized water, are stirred at room temperature 1~20 hour, through filtering, washing
Afterwards, repeat said process 2 times, then through filtering, washing and dry.
The inventive method is mixed due to using the nano combined quaternary ammonium resin of strong base for catalyst in resin base material
The nano material of high intensity is entered, so as to enhance the resistance to gentle resistance to swelling energy of resin.Using the inventive method, in reaction temperature
100 DEG C of degree, the mol ratio of water and ethylene carbonate is 1.5, and the weight ratio of catalyst and ethylene carbonate is under the conditions of 0.05, instead
Answer 2 hours, the conversion ratio of ethylene carbonate is up to 99.4%, and the selectivity of ethylene glycol is up to 99.6%, and catalyst reuses 5
After secondary, activity decrease is less than 5%, achieves preferable technique effect.
Below by embodiment, the invention will be further elaborated.It is necessarily pointed out that following examples are only used
Further illustrated in the present invention, it is impossible to be interpreted as limiting the scope of the invention.
Embodiment
【Embodiment 1】
58.0 grams of styrene, 0.6 gram of divinylbenzene, 30 grams of polystyrene and 0.6 are added in 500 milliliters of three-necked flasks
Gram benzoyl peroxide initiator, in being stirred 2.0 hours at 60 DEG C；Then 2.8 grams of multi-walled carbon nanotubes are added, continue to stir 1
Hour carries out prepolymerization.Add the 260 ml deionized water solution for being dissolved with 2.5 grams of polyvinyl alcohol.Mixing speed is adjusted, together
When be progressively warming up to 80 DEG C, react 5 hours；90 DEG C are warming up to again, is reacted 5 hours, 98 DEG C are finally warming up to, and are reacted 6 hours.Instead
After should terminating, supernatant liquid is poured out, washs, then filters with 85 DEG C of hot washes, then with cold water, 80 DEG C of bakings in baking oven are put into
It is dry, sieving, complex microsphere A of the collection cut size in the range of 0.35~0.60 millimeter.
The chloromethylation of complex microsphere：In 500 milliliters of three-necked flask, 50 grams of complex microsphere A and 250 milliliters of chlorine are added
Methyl ether, is stored at room temperature 4 hours, starts stirring, and it is catalyst to add 15 grams of zinc chloride, is warming up to 50 DEG C and reacts 8 hours, chlorination knot
Room temperature is cooled to after beam, chlorination mother solution is filtered out, methanol cyclic washing is used, dried 8 hours at 100 DEG C, compound chlorine ball A is obtained.
The quaternization of compound chlorine ball：In 500 milliliters of there-necked flasks, 20 grams of compound chlorine ball A, 100 milliliters of tetrahydrochysene furans are added
Mutter, 20.0 grams of Trimethylamines, stirring reaction 12 hours, react and mother liquor are filtered to remove after terminating, respectively successively at reflux
With dichloromethane, acetone and water washing, the nano combined quaternary ammonium resin A1 of chlorine type is dried to obtain under vacuo.
The transition of the nano combined quaternary ammonium resin of chlorine type：In 200 milliliters of beakers, 10 grams of nano combined quaternary ammoniums of chlorine type are added
Salt resin A1,3 grams of NaOH and 180 gram of deionized waters, were stirred at room temperature after 2 hours, filtering, after being washed with deionized, in repetition
State process 2 times, filter, be washed with deionized, drying under vacuo obtains the nano combined quaternary ammonium resin A2 of strong base.
【Embodiment 2】
In 500 milliliters of there-necked flasks, 20 grams are added【Embodiment 1】The compound chlorine ball A of gained, 150 milliliters of tetrahydrofurans,
35.0 grams of tri-butylamines, stirring reaction 30 hours, react and mother liquor are filtered to remove after terminating, respectively successively with two at reflux
Chloromethanes, acetone and water washing, dry to obtain the nano combined quaternary ammonium resin A3 of chlorine type under vacuo.
The transition of the nano combined quaternary ammonium resin of chlorine type：In 200 milliliters of beakers, 10 grams of nano combined quaternary ammoniums of chlorine type are added
Salt resin A3,20 grams of Ba (OH)2With 40 grams of deionized waters, it is stirred at room temperature after 18 hours, filters, after being washed with deionized, weight
Said process 2 times, filtering, are washed with deionized again, and drying under vacuo obtains the nano combined quaternary ammonium resin A4 of strong base.
【Embodiment 3】
Monomer mixture solution (60.0 grams of styrene, 1.7 grams containing initiator are added in 500 milliliters of three-necked flasks
Divinylbenzene, 60 grams of polystyrene, 1.6 grams of multi-walled carbon nanotubes and 1.0 grams of benzoyl peroxides, the solution are stirred prior to 70 DEG C
Mix reaction 0.5 hour), agitator is started, the mixed solution of 200 ml deionized waters and 5 grams of gelatin is added, is warming up to 85 DEG C,
Reaction 3 hours, then it is warming up to 90 DEG C, react 9 hours, be finally warming up to 100 DEG C, react 10 hours.After reaction terminates, pour out
Supernatant liquid, is washed with 85 DEG C of hot washes, then with cold water, then filters, and is put into 80 DEG C of drying in baking oven, and grain is collected in sieving
Complex microsphere B of the footpath in the range of 0.35~0.60 millimeter.
The chloromethylation of complex microsphere：In 500 milliliters of three-necked flask, 50 grams of complex microsphere B and 150 milliliters of chlorine are added
Methyl ether, is stored at room temperature 6 hours, starts stirring, and it is catalyst to add 30 grams of zinc chloride, is warming up to 50 DEG C and reacts 24 hours, chlorination
Room temperature is cooled to after end, chlorination mother solution is filtered out, methanol cyclic washing is used, dried 8 hours at 100 DEG C, compound chlorine ball is obtained
B。
The quaternization of compound chlorine ball：In 500 milliliters of there-necked flasks, 20 grams of compound chlorine ball B, 150 milliliters of tetrahydrochysene furans are added
Mutter, 30.0 grams of tri-butylamines, stirring reaction 24 hours, react and mother liquor are filtered to remove after terminating, respectively successively at reflux
With dichloromethane, acetone and water washing, the nano combined quaternary ammonium resin B1 of chlorine type is dried to obtain under vacuo.
The nano combined quaternary ammonium resin B1 of chlorine type is used【Embodiment 2】Described method is made the transition, and is obtained strong base and is received
Rice compound quaternary ammonium salt resin B 2.
【Embodiment 4】
In 500 milliliters of there-necked flasks, 15 grams are added【Embodiment 3】The compound chlorine ball B of gained, 150 milliliters of tetrahydrofurans,
35.0 grams of triethylamines, stirring reaction 10 hours, react and mother liquor are filtered to remove after terminating, respectively successively with two at reflux
Chloromethanes, acetone and water washing, dry to obtain the nano combined quaternary ammonium resin B3 of chlorine type under vacuo.
The nano combined quaternary ammonium resin B3 of chlorine type will be used【Embodiment 2】Described method is made the transition, and obtains strong base
Nano combined quaternary ammonium resin B4.
【Embodiment 5】
Change【Embodiment 3】In monomer mixture solution (76.0 grams of α-methylstyrenes, 3.5 grams of divinylbenzenes, 75
Gram gasoline, 2.4 grams of multi-walled carbon nanotubes and 1.4 grams of benzoyl peroxides), remaining preparation condition with【Embodiment 3】It is identical, obtain
Complex microsphere C.
The chloromethylation of complex microsphere：In 500 milliliters of three-necked flask, 40 grams of complex microsphere C and 150 milliliter 1 are added,
4- dichloro methyl butyl ethers, are stored at room temperature 6 hours, start stirring, and it is catalyst to add 25 grams of zinc chloride, is warming up to 50 DEG C of reactions
24 hours, chlorination was cooled to room temperature after terminating, and filters out chlorination mother solution, used methanol cyclic washing, dries 8 hours, obtains at 100 DEG C
To compound chlorine ball C.
The quaternization of compound chlorine ball：In 500 milliliters of there-necked flasks, 30 grams of compound chlorine ball A, 150 milliliters of tetrahydrochysene furans are added
Mutter, 20.0 grams of triethylamines, stirring reaction 12 hours, react and mother liquor are filtered to remove after terminating, respectively successively at reflux
With dichloromethane, acetone and water washing, the nano combined quaternary ammonium resin C1 of chlorine type is dried to obtain under vacuo.
The nano combined quaternary ammonium resin C1 of chlorine type is used【Embodiment 2】Described method is made the transition, and is obtained strong base and is received
Rice compound quaternary ammonium salt resin C2.
【Embodiment 6】
According to【Embodiment 4】The step of quaternization reaction is carried out to compound chlorine ball C, obtain nano combined quaternary ammonium resin
C3。
The nano combined quaternary ammonium resin C3 of chlorine type is used【Embodiment 2】Described method is made the transition, and is obtained strong base and is received
Rice compound quaternary ammonium salt resin C4.
【Embodiment 7】
Will【Embodiment 1】The nano combined quaternary ammonium resin A2 of prepared strong base prepares carbon for ethylene carbonate ester hydrolysis
In the reaction of vinyl acetate.By 44.0 grams of ethylene carbonates, 13.5 grams of deionized waters and 2.2 grams【Embodiment 1~9】What is prepared urges
Agent is placed in 100 milliliters of autoclaves that (mol ratio of water and ethylene carbonate is 1.5, the quality of catalyst and ethylene carbonate
Than for 0.05), 100 DEG C are reacted 2 hours.After reaction terminates, autoclave is cooled to room temperature, is vented.Liquid product is taken to enter promoting the circulation of qi
Analysis of hplc, the conversion ratio for measuring ethylene carbonate is 99.4%, and the selectivity of ethylene glycol is 99.6%, resin catalyst
Swellbility is SSWELLFor 3.9%.
【Embodiment 8~12】
Strong base nano combined quaternary ammonium resin species used in changing, remaining condition with【Embodiment 7】Described phase
Together, the result obtained is as shown in table 1.
Table 1
【Embodiment 13】
Together【Embodiment 7】, simply reaction temperature is 120 DEG C.The conversion ratio for obtaining ethylene carbonate is 99.8%, ethylene glycol
Selectivity be 99.1%, the selectivity of many ethylene glycol is 0.9%.
【Embodiment 14】
Together【Embodiment 7】, simply reaction temperature is 140 DEG C.The conversion ratio for obtaining ethylene carbonate is 99.5%, ethylene glycol
Selectivity be 98.8%, the selectivity of many ethylene glycol is 1.2%.
【Embodiment 15】
Together【Embodiment 7】, simply reaction temperature is 80 DEG C.The conversion ratio for obtaining ethylene carbonate is 67.8%, ethylene glycol
Selectivity be 99.1%, the selectivity of many ethylene glycol is 0.9%.
【Embodiment 16】
Together【Embodiment 7】, simply the consumption of deionized water is 27.0 grams (mol ratio of water and ethylene carbonate is 3).
It is 99.5% to ethylene carbonate ester conversion rate, the selectivity of ethylene glycol is 99.3%, the selectivity of many ethylene glycol is 0.7%.
【Embodiment 17】
Together【Embodiment 7】, simply the consumption of deionized water is 72.0 grams (mol ratio of water and ethylene carbonate is 8).
It is 99.4% to ethylene carbonate ester conversion rate, the selectivity of ethylene glycol is 99.5%, the selectivity of many ethylene glycol is 0.5%.
【Embodiment 18】
Together【Embodiment 7】, simply the consumption of catalyst is 1.1 grams (ratio of catalyst and ethylene carbonate is 0.025).
It is 66.8% to obtain ethylene carbonate ester conversion rate, and the selectivity of ethylene glycol is 99.3%, and the selectivity of many ethylene glycol is 0.7%.
【Embodiment 19】
Together【Embodiment 7】, simply catalyst amount is 8.8 grams (ratio of catalyst and ethylene carbonate is 0.2).Obtain
Ethylene carbonate ester conversion rate is 99.3%, and the selectivity of ethylene glycol is 98.0%, and the selectivity of many ethylene glycol is 2.0%.
【Embodiment 20】
Together【Embodiment 7】, simply the consumption of catalyst be 17.6 grams (the weight ratio of catalyst and ethylene carbonate be
0.4).It is 99.4% to obtain ethylene carbonate ester conversion rate, and the selectivity of ethylene glycol is 96.1%, and the selectivity of many ethylene glycol is
3.9%.
【Embodiment 21】
Will【Embodiment 7】Catalyst after reaction terminates is applied mechanically 5 times by same reaction conditions, and activity is not decreased obviously.
Reaction result is shown in Table 3.
Table 2
【Comparative example 1】
Together【Embodiment 1】, be simply added without multi-walled carbon nanotube, obtain microballoon D, chlorine ball D, chlorine type quaternary ammonium resin D1 and
Strong base quaternary ammonium resin D2.D2 is used into ethylene carbonate and water hydrolysis to prepare in the reaction of ethylene glycol, reaction condition with【It is real
Apply example 7】Identical, the conversion ratio for obtaining ethylene carbonate is 98.9%, and the selectivity of ethylene glycol is 99.1%, the swelling ratio of resin
SSWELLFor 16.7%.The catalyst reacted after terminating is applied mechanically 5 times by same reaction conditions, activity is decreased obviously.Reaction result
It is shown in Table 3.
Table 3
Claims (8)
1. a kind of method of preparing ethyl glycol by hydrolysis of ethylene carbonate, using ethylene carbonate and water as reaction raw materials, in reaction temperature
Spend for 60~180 DEG C, the mol ratio of water and ethylene carbonate is 1~10, the weight ratio of catalyst and ethylene carbonate is 0.005
Under conditions of~1, raw material obtains ethylene glycol in 1~8 hour with catalyst haptoreaction；Wherein, the catalyst is received for strong base
Rice compound quaternary ammonium salt resin；
The preparation method of the nano combined quaternary ammonium resin of strong base comprises the following steps：
A) by auxiliary agent one be made into weight percent concentration be 0.5~2% water solution A, by monomer, comonomer, nano material,
Initiator and the wiring solution-forming B of auxiliary agent two；
Wherein, the monomer is selected from methyl methacrylate, butyl acrylate, styrene, α-methylstyrene, 4- butyl benzene second
At least one of alkene or acrylonitrile；
The comonomer is selected from ethyleneglycol dimethyacrylate, diallyl benzene, divinyl phenylmethane or divinyl
At least one of base benzene；
The nano material is selected from multi-walled carbon nanotube；
The initiator is in benzoyl peroxide, azodiisobutyronitrile, lauroyl peroxide or isopropyl benzene hydroperoxide
It is at least one；
The auxiliary agent one is selected from least one of polyvinyl alcohol, gelatin, starch, methylcellulose, bentonite or calcium carbonate；
The auxiliary agent two is selected from least one of aliphatic hydrocarbon, polystyrene, gasoline, aliphatic acid or paraffin；
By weight percentage, the consumption of monomer is 85~95%, and the consumption of comonomer is 2~5%, the consumption of nano material
For 0.1~3%, the consumption of initiator is 0.1~10%；The consumption of auxiliary agent one is the 150~400% of monomer consumption, auxiliary agent two
Consumption be monomer consumption 50~100%；
B) then solution B is mixed in 60~75 DEG C of prepolymerizations 0.5~2.5 hour, is warming up to 70~90 by solution B with solution A
DEG C reaction 5~15 hours, then be warming up to 90~100 DEG C react 5~15 hours；After reaction terminates, through extracting, washing, filter, do
Dry, sieving, obtains the complex microsphere of 0.35~0.60 millimeter of particle size range；
C) chloromethylation reagents equivalent to complex microsphere weight 200~500% are added into complex microsphere, and equivalent to multiple
The zinc chloride catalyst of microspheres weight 20~70% is closed, is reacted 8~30 hours at 30~60 DEG C, is answered through filtering, washing
Close chlorine ball, drying to constant weight；The chloromethylation reagents are selected from least one of chloromethyl ether or 1,4- dichloro methyl butyl ethers；
D) organic solvent, 200~500% tertiary amine equivalent to complex microsphere weight 200~700% are added into compound chlorine ball
NR1R2R3, react 4~30 hours under reflux state, the nano combined quaternary ammonium resin of the chlorine type obtained after scrubbed, drying；Its
In, the organic solvent in cyanophenyl, toluene, tetrahydrofuran, dimethylformamide, chloroform or dichloroethanes at least one
Kind；NR1R2R3In, R1、R2、R3For methyl, ethyl, propyl group, normal-butyl or phenyl；
E) the nano combined quaternary ammonium resin of the strong base is obtained after the nano combined quaternary ammonium resin of chlorine type is exchanged with highly basic.
2. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that monomer is selected from benzene second
Alkene.
3. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that comonomer is selected from
Divinylbenzene.
4. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that initiator was selected from
BP.
5. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that auxiliary agent one is selected from poly-
Vinyl alcohol.
6. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that auxiliary agent two is selected from poly-
Styrene.
7. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that the highly basic is selected from
NaOH、KOH、LiOH、Ca(OH)2、Sr(OH)2Or Ba (OH)2At least one of.
8. the method for preparing ethyl glycol by hydrolysis of ethylene carbonate according to claim 1, it is characterised in that reaction temperature is 80
~160 DEG C, the mol ratio of water and ethylene carbonate is 1~8, and the weight ratio of catalyst and ethylene carbonate is 0.01~0.5, instead
It is 1~6 hour between seasonable.
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