CN108912164A - The preparation method and application of solid binary alcohol titanium catalyst for polyester synthesis - Google Patents
The preparation method and application of solid binary alcohol titanium catalyst for polyester synthesis Download PDFInfo
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- CN108912164A CN108912164A CN201810698536.3A CN201810698536A CN108912164A CN 108912164 A CN108912164 A CN 108912164A CN 201810698536 A CN201810698536 A CN 201810698536A CN 108912164 A CN108912164 A CN 108912164A
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- titanium catalyst
- polyester synthesis
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- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 title claims abstract description 98
- 239000003054 catalyst Substances 0.000 title claims abstract description 38
- 239000010936 titanium Substances 0.000 title claims abstract description 29
- 229910052719 titanium Inorganic materials 0.000 title claims abstract description 28
- 229920000728 polyester Polymers 0.000 title claims abstract description 24
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 21
- 239000007787 solid Substances 0.000 title claims abstract description 21
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 19
- 238000003786 synthesis reaction Methods 0.000 title claims abstract description 18
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 claims abstract description 9
- 239000002904 solvent Substances 0.000 claims abstract description 8
- 238000004821 distillation Methods 0.000 claims abstract description 7
- 238000005292 vacuum distillation Methods 0.000 claims abstract description 6
- 239000000758 substrate Substances 0.000 claims abstract description 4
- 239000012429 reaction media Substances 0.000 claims abstract 2
- 235000019441 ethanol Nutrition 0.000 claims description 80
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 34
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 21
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 18
- -1 titanium alkoxide Chemical class 0.000 claims description 14
- 229910003074 TiCl4 Inorganic materials 0.000 claims description 9
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 claims description 8
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 claims description 6
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 claims description 3
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 238000004064 recycling Methods 0.000 claims description 2
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 21
- 239000000243 solution Substances 0.000 description 17
- 239000000706 filtrate Substances 0.000 description 15
- XVBXJBGOQQLLAO-UHFFFAOYSA-J [Ti+4].C=C.OCC([O-])=O.OCC([O-])=O.OCC([O-])=O.OCC([O-])=O Chemical compound [Ti+4].C=C.OCC([O-])=O.OCC([O-])=O.OCC([O-])=O.OCC([O-])=O XVBXJBGOQQLLAO-UHFFFAOYSA-J 0.000 description 14
- 229920000139 polyethylene terephthalate Polymers 0.000 description 12
- 239000005020 polyethylene terephthalate Substances 0.000 description 12
- 239000011949 solid catalyst Substances 0.000 description 9
- 229910052787 antimony Inorganic materials 0.000 description 7
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- 238000003756 stirring Methods 0.000 description 7
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 6
- 150000001875 compounds Chemical class 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 3
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 description 3
- 235000013361 beverage Nutrition 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- 239000004753 textile Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000001476 alcoholic effect Effects 0.000 description 2
- FAWGZAFXDJGWBB-UHFFFAOYSA-N antimony(3+) Chemical compound [Sb+3] FAWGZAFXDJGWBB-UHFFFAOYSA-N 0.000 description 2
- ZTNIBBZMDWOVCJ-UHFFFAOYSA-N butane-1,4-diol;titanium Chemical compound [Ti].OCCCCO ZTNIBBZMDWOVCJ-UHFFFAOYSA-N 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000032050 esterification Effects 0.000 description 2
- 238000005886 esterification reaction Methods 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- YPFDHNVEDLHUCE-UHFFFAOYSA-N propane-1,3-diol Chemical compound OCCCO YPFDHNVEDLHUCE-UHFFFAOYSA-N 0.000 description 2
- 150000003608 titanium Chemical class 0.000 description 2
- 150000003609 titanium compounds Chemical class 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 150000004703 alkoxides Chemical class 0.000 description 1
- 229910000410 antimony oxide Inorganic materials 0.000 description 1
- FPCJKVGGYOAWIZ-UHFFFAOYSA-N butan-1-ol;titanium Chemical compound [Ti].CCCCO.CCCCO.CCCCO.CCCCO FPCJKVGGYOAWIZ-UHFFFAOYSA-N 0.000 description 1
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229920006351 engineering plastic Polymers 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- VTRUBDSFZJNXHI-UHFFFAOYSA-N oxoantimony Chemical compound [Sb]=O VTRUBDSFZJNXHI-UHFFFAOYSA-N 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000010025 steaming Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000001308 synthesis method Methods 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- WVLBCYQITXONBZ-UHFFFAOYSA-N trimethyl phosphate Chemical compound COP(=O)(OC)OC WVLBCYQITXONBZ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic Table
- C07F7/28—Titanium compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/82—Preparation processes characterised by the catalyst used
- C08G63/85—Germanium, tin, lead, arsenic, antimony, bismuth, titanium, zirconium, hafnium, vanadium, niobium, tantalum, or compounds thereof
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The solid binary alcohol titanium catalyst and its preparation method and application that the present invention relates to a kind of for polyester synthesis.It is reacted under conditions of neutrality, room temperature using titanium tetrachloride and dihydric alcohol as reaction medium, using monohydric alcohol as solvent, reaction is evaporated under reduced pressure after terminating；Distilling substrate is the solid binary alcohol titanium catalyst for being used for polyester synthesis, distills and is re-used as solvent after monohydric alcohol vacuum distillation collection out and is recycled.The features such as distillation link required temperature in preparation method of the present invention is low, and distillation time is short, and having reduces energy consumption, save the cost, improves preparation efficiency.
Description
Technical field
The solid binary alcohol titanium catalyst and its preparation method and application that the present invention relates to a kind of for polyester synthesis.
Background technique
Polyethylene terephthalate (PET), polypropylene terephthalate (PTT), poly terephthalic acid fourth two
The polyesters compounds such as alcohol ester (PBT) are widely used in the fields such as fiber, bottle piece, film and engineering plastics, are highly important
Large chemical products.
An important use of PET is production fiber and then machining textile, and PET fiber can replace cotton or and cotton
It spends blended.Another important use of PET polyester is machined to bottle piece or film, is widely used in beverage packaging and electronics row
The fields such as industry.In polyester production process, catalyst plays very crucial effect.
Currently, main polyester catalyst to be used is antimony containing compounds, such as antimony oxide, acetic acid in industrial production
Antimony, antimony glycol etc..Antimony containing compounds activity is moderate, cheap, the PET function admirable produced, and has preferable comprehensive
Performance.But since antimony element is a kind of toxic heavy metal, pollution is generated in PET production and last handling process, and remain in
Antimony element in polyester product such as textile, beverage packaging bottle is extremely harmful for human health and environment.With people's environmental protection
Continuous improvement of the enhancing and society of consciousness to environmental protection requirement, requires day to the antimony content in textile and beverage packaging bottle
Become stringent, is catalyst this requires PET lacks with or without antimony containing compounds in process of production.
Titanium series catalyst is a kind of polyester catalyst of great prospect, such as TiO2, titanate esters etc. react in polyester synthesis
In application furtherd investigate.Environmental-friendly since titanium elements are nontoxic, Titanium series catalyst pet reaction activity is high,
It is expected to that antimony-based catalyst is replaced to be used widely in PET industry.
Titanium ethylene glycolate is Titanium series catalyst because having better stability than the unitary alcohol ester compounds such as butyl titanate
A kind of more titanium compound of middle research.Chinese invention patent CN1327985A is disclosed using titanium ethylene glycolate as catalyst
（C4H9O5Ti）For pet reaction, and it is added to other metallic salts, organic acid or phosphorus-containing compound.Chinese invention patent
CN1403464A discloses a kind of preparation method of dibasic alkoxide solid, and titanium tetrachloride is added in dihydric alcohol, and triethylamine is added
It is filtered after neutralization, filtrate is distilled to obtain dibasic alkoxide compound.Chinese invention patent CN1958641A is with the conjunction of facile hydrolysis titanizing
Object is reacted with water-containing organic solvent prepares solid titanium compound.
But the preparation process energy consumption of the above titanium ethylene glycolate solid catalyst is higher, required time is longer.
Summary of the invention
The object of the present invention is to provide a kind of solid binary alcohol titanium catalyst for polyester synthesis and preparation method thereof and
Using to overcome defect of the existing technology.
The technical solution adopted by the present invention is that：
The preparation method of solid binary alcohol titanium catalyst for polyester synthesis is situated between using titanium tetrachloride and dihydric alcohol as reaction
Matter is reacted using monohydric alcohol as solvent, reaction terminate after under conditions of 3 ~ 5 kPa of pressure, 40 ~ 50 DEG C of temperature into
Row vacuum distillation；Distillation substrate is the solid binary alcohol titanium catalyst for being used for polyester synthesis, is evaporated under reduced pressure the monohydric alcohol of collection
Solvent is re-used as after recycling to be recycled.
Reaction is carried out under conditions of neutrality by inputting ammonia.
The volume ratio of the dihydric alcohol and monohydric alcohol is dihydric alcohol: monohydric alcohol=1: 4 ~ 20, it is preferred that dihydric alcohol and unitary
The volume ratio of alcohol is dihydric alcohol: monohydric alcohol=1: 4 ~ 10.
The dihydric alcohol is selected from one of ethylene glycol, 1,4- butanediol or 1,3- propylene glycol or a variety of.
The monohydric alcohol is selected from one or more of methanol, ethyl alcohol, normal propyl alcohol or isopropanol, preferably in methanol or ethyl alcohol
One or two.
The mass ratio of the material of the titanium tetrachloride and dihydric alcohol is TiCl4: dihydric alcohol=1: 2.
The application of binary titanium alkoxide catalyst, the binary titanium alkoxide catalyst are used for the synthesis of PET polyester.
The vacuum distillation condition is 3 ~ 5 kPa of pressure, 40 ~ 50 DEG C of temperature.
Binary titanium alkoxide solid is prepared using dihydric alcohol and titanium-containing compound as raw material in open source literature, dihydric alcohol had both been used as instead
It answers object to be also used as solvent, extra dihydric alcohol is removed by the method distilled after reaction.It is characteristic of the invention that using low boiling point
Monohydric alcohol and dihydric alcohol mixed solution, dihydric alcohol as reactant and titanium tetrachloride reaction, monohydric alcohol as solvent, due to
The stability of binary titanium alkoxide compound is higher than monohydric alcohol titanium compound, and finally obtained after preparation process is dihydric alcohol titanizing
Close object.It due to monohydric alcohol low boiling point in vacuum distillation process, is easy to steam in and the lower situation of temperature not high in vacuum degree, steam
Evaporating substrate is solid binary alcohol titanium catalyst.The vacuum distillation of the low boiling points monohydric alcohol such as methanol, ethyl alcohol, normal propyl alcohol, isopropanol is received
It is reused after collection, continues on for synthesis of solid binary titanium alkoxide catalyst.Prepared solid binary alcohol titanium catalyst resistant to hydrolysis.
Distillation link required temperature in the preparation method is low, and distillation time is short, and having reduces energy consumption, save the cost, improves preparation effect
The features such as rate.
Specific embodiment
The following examples are for being specifically described the present invention.Embodiment is not intended to usage range limit of the invention
System is in the condition that embodiment describes.
Embodiment 1：
Add 12 mL ethylene glycol and 108 ml ethyl alcohol in four-neck flask, at room temperature by 11.7 mL TiCl4It is molten to be added dropwise to mixed alcohol
In liquid, stir simultaneously.TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, is to pH value of solution
When 7.0, stop logical NH3, filtering, filtrate is the solution of the catalyst containing titanium ethylene glycolate.Filtrate is vacuumized and is decompressed to 5 kPa, 45
DEG C steam after ethyl alcohol to obtain 14.5 g of titanium ethylene glycolate solid catalyst.
Embodiment 2：
Add 24 mL ethylene glycol and 96 ml ethyl alcohol in four-neck flask, at room temperature by 23.4 mL TiCl4It is molten to be added dropwise to mixed alcohol
In liquid, stir simultaneously.TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, is to pH value of solution
When 7.0, stop logical NH3, filtering, filtrate is the solution of the catalyst containing titanium ethylene glycolate.Filtrate is vacuumized and is decompressed to 4 kPa, 40
DEG C steam after ethyl alcohol to obtain 30.4 g of titanium ethylene glycolate solid catalyst.
Embodiment 3：
Add 48 mL ethylene glycol and 192 ml ethyl alcohol in four-neck flask, at room temperature by 44.8 mL TiCl4It is molten to be added dropwise to mixed alcohol
In liquid, stir simultaneously.TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, is to pH value of solution
When 7.0, stop logical NH3, filtering, filtrate is the solution of the catalyst containing titanium ethylene glycolate.Filtrate is vacuumized and is decompressed to 3 kPa, 40
DEG C steam after ethyl alcohol to obtain 58.9 g of titanium ethylene glycolate solid catalyst.
Embodiment 4：
Add 12 mL1,4- butanediol and 108 ml ethyl alcohol in four-neck flask, at room temperature by 7.4 mL TiCl4It is added dropwise to mixing
In alcoholic solution, stir simultaneously.TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, to pH value of solution
When being 7.0, stop logical NH3, filtering, filtrate is the solution of the titanium catalyst containing 1,4-butanediol.Filtrate is vacuumized and is decompressed to 4
KPa, 40 DEG C steam after ethyl alcohol to obtain 10.7 g of 1,4-butanediol titanium solid catalyst.
Embodiment 5：
Add 48 mL1,4- butanediol and 192 ml ethyl alcohol in four-neck flask, at room temperature by 28.2 mL TiCl4It is added dropwise to mixing
In alcoholic solution, stir simultaneously.TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, to pH value of solution
When being 7.0, stop logical NH3, filtering, filtrate is the solution of the titanium catalyst containing 1,4-butanediol.Filtrate is vacuumized and is decompressed to 3
KPa, 40 DEG C steam after ethyl alcohol to obtain 40.2 g of 1,4-butanediol titanium solid catalyst.
Embodiment 6：
Add 12 mL ethylene glycol and 108 ml methanol in four-neck flask, at room temperature by 11.7 mL TiCl4It is molten to be added dropwise to mixed alcohol
In liquid, stir simultaneously.TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, is to pH value of solution
When 7.0, stop logical NH3, filtering, filtrate is the solution of the catalyst containing titanium ethylene glycolate.Filtrate is vacuumized and is decompressed to 5 kPa, 50
DEG C steam after methanol to obtain 13.2 g of titanium ethylene glycolate solid catalyst.
Embodiment 7（Reference examples）：
Add 120 mL ethylene glycol in four-neck flask, at room temperature by 11.7 mL TiCl4It is added dropwise in ethylene glycol, stirs simultaneously.
TiCl is added dropwise4After, it is passed through dry NH3, lead to NH3Speed is 100 ml/min, when pH value of solution is 7.0, stops logical NH3,
Filtering, filtrate are the solution of the catalyst containing titanium ethylene glycolate.Filtrate is vacuumized and is decompressed to 0.5 kPa, 100 DEG C steam extra second
11.7 g of titanium ethylene glycolate solid catalyst is obtained after glycol.
Embodiment 8：
In pet reaction kettle plus 1.5 kg of terephthalic acid (TPA), 692 ml of ethylene glycol, 0.2 ml of trimethyl phosphate, in embodiment 1
0.16 g of titanium ethylene glycolate catalyst, carry out esterification at 260 DEG C, it is to be distilled go out water be greater than the 97% of theoretical water yield
When, it is considered as esterification completion, after steaming extra ethylene glycol, starts pumping decompression, and increase temperature and contract to 280 DEG C
Poly- reaction, when PET PET conglutination reaches 0.68 dl/g, reaction was completed, discharges and is sliced, and is sliced content of carboxyl end group 24.9
mol/t。
When above embodiments show to prepare binary titanium alkoxide solid catalyst as raw material using dihydric alcohol and monohydric alcohol mixed alcohol,
Required temperature and pressure is far below using dihydric alcohol as raw material when distillation, therefore using dihydric alcohol and monohydric alcohol mixed alcohol as raw material
Preparation method have reduce energy consumption, save the cost, improve preparation efficiency the features such as.
Claims (7)
1. the preparation method of the solid binary alcohol titanium catalyst for polyester synthesis, which is characterized in that with titanium tetrachloride and binary
Alcohol is reacted as reaction medium, using monohydric alcohol as solvent, is reacted after terminating in 3 ~ 5 kPa of pressure, temperature 40 ~ 50
It is evaporated under reduced pressure under conditions of DEG C；Distillation substrate is the solid binary alcohol titanium catalyst for being used for polyester synthesis, vacuum distillation
Solvent is re-used as after the monohydric alcohol recycling of collection to be recycled.
2. the preparation method of the solid binary alcohol titanium catalyst according to claim 1 for polyester synthesis, feature exist
In carrying out reaction under conditions of neutrality by inputting ammonia.
3. the preparation method of the solid binary alcohol titanium catalyst according to claim 1 for polyester synthesis, feature exist
In the volume ratio of the dihydric alcohol and monohydric alcohol is dihydric alcohol: monohydric alcohol=1: 4 ~ 20.
4. the preparation method of the solid binary alcohol titanium catalyst according to claim 1 for polyester synthesis, feature exist
In the dihydric alcohol is selected from one of ethylene glycol, 1,4-butanediol or 1,3-PD or a variety of.
5. the preparation method of the solid binary alcohol titanium catalyst according to claim 1 for polyester synthesis, feature exist
In the monohydric alcohol is selected from one or more of methanol, ethyl alcohol, normal propyl alcohol or isopropanol, preferably one in methanol or ethyl alcohol
Kind or two kinds.
6. the preparation method of the solid binary alcohol titanium catalyst according to claim 1 for polyester synthesis, feature exist
In the mass ratio of the material of the titanium tetrachloride and dihydric alcohol is TiCl4: dihydric alcohol=1: 2.
7. the application of the binary titanium alkoxide catalyst of any of the above-described claim, which is characterized in that the synthesis for PET polyester.
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| CN114075237A (en) * | 2020-08-19 | 2022-02-22 | 中国石油化工股份有限公司 | Preparation method of titanium dialkoxide |
| CN114075237B (en) * | 2020-08-19 | 2024-01-19 | 中国石油化工股份有限公司 | Preparation method of titanium diol |
| CN114874423A (en) * | 2021-02-05 | 2022-08-09 | 中国石油化工股份有限公司 | Titanium catalyst and preparation method thereof, and titanium catalyst composition and preparation method thereof |
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