CN107915601A - The method of synthesizing polyoxymethylene dimethyl ethers - Google Patents
The method of synthesizing polyoxymethylene dimethyl ethers Download PDFInfo
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- CN107915601A CN107915601A CN201610880559.7A CN201610880559A CN107915601A CN 107915601 A CN107915601 A CN 107915601A CN 201610880559 A CN201610880559 A CN 201610880559A CN 107915601 A CN107915601 A CN 107915601A
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- catalyst
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C41/00—Preparation of ethers; Preparation of compounds having groups, groups or groups
- C07C41/48—Preparation of compounds having groups
- C07C41/50—Preparation of compounds having groups by reactions producing groups
- C07C41/56—Preparation of compounds having groups by reactions producing groups by condensation of aldehydes, paraformaldehyde, or ketones
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/06—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing polymers
- B01J31/08—Ion-exchange resins
- B01J31/10—Ion-exchange resins sulfonated
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/40—Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
- B01J2231/42—Catalytic cross-coupling, i.e. connection of previously not connected C-atoms or C- and X-atoms without rearrangement
- B01J2231/4277—C-X Cross-coupling, e.g. nucleophilic aromatic amination, alkoxylation or analogues
- B01J2231/4288—C-X Cross-coupling, e.g. nucleophilic aromatic amination, alkoxylation or analogues using O nucleophiles, e.g. alcohols, carboxylates, esters
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Abstract
The present invention relates to the method for synthesizing polyoxymethylene dimethyl ethers, mainly solve the problems, such as the prior art using dimethoxym ethane and paraformaldehyde as reaction raw materials synthesizing polyoxymethylene dimethyl ether technique in there are catalyst activity it is low, selectivity it is low, by using the method for synthesizing polyoxymethylene dimethyl ethers, using dimethoxym ethane and paraformaldehyde as raw material, raw material is contacted with polyoxymethylene dimethyl ethers catalyst, reaction generation polyoxymethylene dimethyl ether；The catalyst is the sulfonic acid polystyrene cation exchange resin of modified metal ion modification, and the sulfonic acid polystyrene cation exchange resin includes crosslinked polystyrene skeleton and sulfonic acid group；The modified metal includes the technical solution selected from least one of IIA metals, available in the industrial production of polyoxymethylene dimethyl ether.
Description
Technical field
The present invention relates to the method for synthesizing polyoxymethylene dimethyl ethers.
Background technology
In recent years, with the resource grid that the industrial revolution influences to go deep into increasingly and China is distinctive " more coals, less oil, have gas "
Office, China's oil resource growing tension, oil supply pressure unprecedentedly increase.It is expected that 10~20 years following, China's oil supply rate
Only~50%.The energy crisis that China how is solved using the coal resources of China's abundant is become as researcher urgent need solution
Certainly the problem of.Therefore the attention that new oil product substitute is increasingly subject to people is developed by coal-based methanol.
Dimethyl ether is proposed as a kind of procetane earliest, yet with its own cold starting performance is poor, room temperature
Lower vapour pressure is high, easily produces vapour lock make it that dimethyl ether is significantly raised as the cost of vehicle alternative fuel.Polyoxymethylene dimethyl ether,
That is Polyoxymethylene dimethyl ethers (PODE), are the common names of a kind of material, its skeleton symbol can be expressed as
CH3O(CH2O)nCH3, have higher octane number (>And oxygen content (42~51%) 30).When the value of n is 2~10, its thing
Rationality matter, combustibility and diesel oil are very close, preferably resolve dimethyl ether and are lacked as existing for derv fuel blend component
Fall into.Therefore polyoxymethylene dimethyl ether can be as new cleaning diesel component, and the additive amount in diesel oil, can up to 30% (v/v)
To improve the combustion position of diesel oil within the engine, the thermal efficiency is improved, reduces particulate matter and CO in tail gasxAnd NOxRow
Put.It is reported that the CH of addition 5~30%3OCH2OCH3NO can be reducedxDischarging 7~10%, PM reduces by 5~35%.By coal Ji Jia
Alcohol synthesis PODE can not only substitute part diesel oil, moreover it is possible to improve the efficiency of combustion of diesel oil, reduce danger of the diesel combustion to environment
Evil, has important strategic importance and good economic value.
CN 101048357A (method for preparing polyoxymethylene dimethyl ether) are described using inorganic acid, sulfonic acid, heteropoly acid, acid
Property ion exchange resin, zeolite, aluminium oxide etc. are used as catalyst, are reactant synthesizing polyoxymethylene by dimethoxym ethane and metaformaldehyde
The method of dimethyl ether.But using the conversion ratio and selectivity of existing catalyst all up for improving.
Cation exchange resin is shown good as solid acid catalyst in the esterification, etherification reaction in Aquo System
Catalytic perfomance, but its acid strength is relatively low.Generally use prepares support type resin, makes activity by increasing acidity of catalyst
It is improved.Metal-modified resin can be used, new acid site is formed on a catalyst, can't be handed over by other metal ions
Change, which solves in polyoxymethylene dimethyl ether synthesis, catalyst keeps high activity in commercial Application in the case of and it is acid not
The problem of being substituted by metal ion contained in raw material and inactivating.
The content of the invention
The technical problems to be solved by the invention are that the prior art is poly- as reaction raw materials synthesis using dimethoxym ethane and paraformaldehyde
In formaldehyde dimethyl ether technique there are n=2-10 selectivity of product it is low the problem of, there is provided a kind of new synthesizing polyoxymethylene dimethyl ethers
Method.The catalyst has the advantages that the selectivity of product of n=2-10 is high.
In order to solve the above-mentioned technical problem, technical scheme is as follows：
The method of synthesizing polyoxymethylene dimethyl ethers, using dimethoxym ethane and paraformaldehyde as raw material, raw material and polyformaldehyde dimethyl
Ether catalyst contacts, reaction generation polyoxymethylene dimethyl ether；The catalyst is the sulfonic acid type polyphenyl second of modified metal ion modification
Alkene cation exchange resin, the sulfonic acid polystyrene cation exchange resin include crosslinked polystyrene skeleton and sulfonic group
Group；The modified metal is included selected from least one of IIA metals.
By the metal-modified sulfonic acid polystyrene cation exchange resins of IIA, significantly improve to n=2~10
The selectivity of PODE.
In above-mentioned technical proposal, the IIA metals preferably are selected from least one of Ra, Be, Mg, Ca, Sr and Ba.
In above-mentioned technical proposal, the modified metal further comprises copper, and Cu is being improved to n=2~10 with IIA metals
There is synergistic effect in terms of the selectivity of PODE.Ratio between Cu and IIA metals is not particularly limited, as long as Cu and IIA gold
Belong to being present in catalyst at the same time and can obtain comparable synergy.
As non-restrictive, the mass ratio of Cu and IIA metals is 0.01~100, within this range further non-limit
Qualitative citing such as 0.1,0.5,0.8,1,1.5,2,3,4,5,6,7,8,9,10 etc..
In above-mentioned technical proposal, the modified metal includes at least two in IIA metals, such as, but not limited to Ra
With Be, Mg and Ca, Sr and Ba, the selectivity to the PODE of n=2~10 is being improved between the element two-by-two in the IIA metals
Aspect has synergistic effect.At this time, the ratio between Ra and Be, Mg and Ca, Sr and Ba is not particularly limited, if it is above-mentioned two-by-two
IIA metallic elements are present in catalyst at the same time can obtain comparable synergy.
As non-restrictive, the mass ratio between the above-mentioned metallic elements of IIA two-by-two is 0.01~100, in this scope
Interior further non-restrictive such as 0.1,0.5,0.8,1,1.5,2,3,4,5,6,7,8,9,10 etc..
In above-mentioned technical proposal, the content of modified metal is not particularly limited in catalyst, such as, but not limited to catalyst
The content of middle modified metal is more than 0 and is less than or equal to 10w%.
In above-mentioned technical proposal, the full exchange capacity of the resin is 3.0~6.0mmol/g.
In above-mentioned technical proposal, the resin can be gel-type or macroporous type.
The polyoxymethylene dimethyl ethers catalyst that the present invention uses can use the preparation method that includes the following steps can be,
It is included in the presence of the acid of catalytic amount, by the sulfonic acid polystyrene cation exchange resin and contains the modified metal oxygen
The contact of the suspension of compound and/or hydroxide carries out ion exchange.
In above-mentioned technical proposal, the acid is not particularly limited, if can with containing the modified metal-oxide and/or
The salt that hydroxide reacts can be dissolved in solvent used in the suspension can, under this principle such as, but not limited to
At least one of carboxylic acid of hydrochloric acid, nitric acid or C2~C10.
In above-mentioned technical proposal, the carboxylic acid can be hydroxyl substituted carboxylic acid, such as, but not limited to hydroxyacetic acid, lactic acid,
Tartaric acid, citric acid etc..
In above-mentioned technical proposal, the carboxylic acid can be the monoacid of C2~C10, such as, but not limited to acetic acid etc..
In above-mentioned technical proposal, dimethoxym ethane: the mass ratio of paraformaldehyde is preferably (0.01~100): 1, more preferably 0.1~
10, more more preferably 0.2~5.
In above-mentioned technical proposal, catalyst amount is preferably the 0.05~10% of raw material weight, more preferably raw material weight
0.1~5%.
In above-mentioned technical proposal, reaction temperature is preferably 70~200 DEG C.
In above-mentioned technical proposal, reaction pressure is preferably 0.2~6MPa.
In above-mentioned technical proposal, when the reaction time is preferably 1 to 20 small, more 4 to 12 it is small when.
In the case where the composition of catalyst of the present invention is clear, the preparation of catalyst is not particularly limited, Ke Yican
Ion-exchange process commonly used in the prior art is examined to be prepared.Such as it may include following steps：By sulfonic acid sodium form polystyrene
Cation exchange resin is washed with deionized water to outflow clear water, soaks 1 with 0.5~20% strong acid (such as hydrochloric acid or sulfuric acid)
~12h, soaks 1~12h with deionized water or alcohol solution dipping, is washed with deionized afterwards to pH=6, that is, obtains this hair
The bright sulfonic acid polystyrene cation exchange resin.When sulfonic acid type of the present invention can also be directly obtained from commercially available channel
Polystyrol cation exchange resin, rather than sulfonic acid sodium form, may be used to the preparation of catalyst of the present invention.
Catalyst using the present invention, the PODE yields of n=2~10 are good, and the selectivity of product of n=2~10 is up to 89.6%,
Achieve preferable technique effect.
Heretofore described full exchange capacity is in terms of butt resin.
Below by embodiment, the present invention is further elaborated, the raw material paraformaldehyde used in embodiment and comparative example
The degree of polymerization be 5, selectivity of product be by 2~10 polyoxymethylene dimethyl ether of the degree of polymerization on the basis of paraformaldehyde target production
Thing calculates.
Embodiment
【Embodiment 1】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin is with 300ml containing the Cu (OH) that Cu is 2 grams2Aqueous suspension mixes, and adds 1 drop ice vinegar
Acid, mixing, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, is made the catalyst that Cu contents are 2w%.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 2】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, with 300ml containing the Ra (OH) that Ra is 2 grams under nitrogen protection2Aqueous suspension mixes, and adds
Enter 1 drop glacial acetic acid, mix, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is 2w%'s that Ra contents, which are made,
Catalyst.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 3】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, with 300ml containing the Be (OH) that Be is 2 grams under nitrogen protection2Aqueous suspension mixes, and adds
Enter 1 drop glacial acetic acid, mix, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is 2w%'s that Be contents, which are made,
Catalyst.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 4】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, with 300ml containing the Mg (OH) that Mg is 2 grams under nitrogen protection2Aqueous suspension mixes, and adds
Enter 1 drop glacial acetic acid, mix, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is 2w%'s that Mg contents, which are made,
Catalyst.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 5】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, with 300ml containing the Ca (OH) that Ca is 2 grams under nitrogen protection2Aqueous suspension mixes, and adds
Enter 1 drop glacial acetic acid, mix, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is 2w%'s that Ca contents, which are made,
Catalyst.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 6】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, with 300ml containing the Sr (OH) that Sr is 2 grams under nitrogen protection2Aqueous suspension mixes, and adds
Enter 1 drop glacial acetic acid, mix, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is 2w%'s that Sr contents, which are made,
Catalyst.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 7】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, with 300ml containing the Ba (OH) that Ba is 2 grams under nitrogen protection2Aqueous suspension mixes, and adds
Enter 1 drop glacial acetic acid, mix, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is 2w%'s that Ba contents, which are made,
Catalyst.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 8】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, the Cu (OH) that it is 1 gram containing Cu with 300ml that nitrogen protection is lower and Ra is 1 gram2And Ra
(OH)2Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, at room temperature stand 24 it is small when, vacuum drying chamber dry to
Constant weight, that is, it is the catalyst that 1w% and Ra contents are 1w% that Cu contents, which are made,.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 9】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, the Cu (OH) that it is 1 gram containing Cu with 300ml that nitrogen protection is lower and Be is 1 gram2And Be
(OH)2Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, at room temperature stand 24 it is small when, vacuum drying chamber dry to
Constant weight, that is, it is the catalyst that 1w% and Be contents are 1w% that Cu contents, which are made,.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 10】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, the Cu (OH) that it is 1 gram containing Cu with 300ml that nitrogen protection is lower and Mg is 1 gram2And Mg
(OH)2Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, at room temperature stand 24 it is small when, vacuum drying chamber dry to
Constant weight, that is, it is the catalyst that 1w% and Mg contents are 1w% that Cu contents, which are made,.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 11】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, the Cu (OH) that it is 1 gram containing Cu with 300ml that nitrogen protection is lower and Ca is 1 gram2And Ca
(OH)2Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, at room temperature stand 24 it is small when, vacuum drying chamber dry to
Constant weight, that is, it is the catalyst that 1w% and Ca contents are 1w% that Cu contents, which are made,.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 12】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, the Cu (OH) that it is 1 gram containing Cu with 300ml that nitrogen protection is lower and Sr is 1 gram2And Sr
(OH)2Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, at room temperature stand 24 it is small when, vacuum drying chamber dry to
Constant weight, that is, it is the catalyst that 1w% and Sr contents are 1w% that Cu contents, which are made,.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 13】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, the Cu (OH) that it is 1 gram containing Cu with 300ml that nitrogen protection is lower and Ba is 1 gram2And Ba
(OH)2Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, at room temperature stand 24 it is small when, vacuum drying chamber dry to
Constant weight, that is, it is the catalyst that 1w% and Ba contents are 1w% that Cu contents, which are made,.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 14】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is down 1 gram containing Cu with 300ml, Ra is 0.5 gram and Be is 0.5 gram
Cu(OH)2、Ra(OH)2With Be (OH)2Mixing aqueous suspension mixing, adds 1 drop glacial acetic acid, mixes, when standing 24 is small at room temperature,
In vacuum drying chamber drying to constant weight, that is, it is that 1w%, Ra content are that 0.5w% and Be contents are urging for 0.5w% that Cu contents, which are made,
Agent.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 15】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is down 1 gram containing Cu with 300ml, Mg is 0.5 gram and Ca is 0.5 gram
Cu(OH)2、Mg(OH)2With Ca (OH)2Mixing aqueous suspension mixing, adds 1 drop glacial acetic acid, mixes, when standing 24 is small at room temperature,
In vacuum drying chamber drying to constant weight, that is, it is that 1w%, Mg content are that 0.5w% and Ca contents are urging for 0.5w% that Cu contents, which are made,
Agent.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 16】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is down 1 gram containing Cu with 300ml, Sr is 0.5 gram and Ba is 0.5 gram
Cu(OH)2、Sr(OH)2With Ba (OH)2Mixing aqueous suspension mixing, adds 1 drop glacial acetic acid, mixes, when standing 24 is small at room temperature,
In vacuum drying chamber drying to constant weight, that is, it is that 1w%, Sr content are that 0.5w% and Ba contents are urging for 0.5w% that Cu contents, which are made,
Agent.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 17】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ra is 0.4 gram, Be is 0.3 gram and Mg
For 0.3 gram of Cu (OH)2、Ra(OH)2、Be(OH)2With Mg (OH)2Aqueous suspension mixing is mixed, 1 drop glacial acetic acid is added, mixes,
When standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is that 1w%, Ra content are 0.4w%, Be that Cu contents, which are made,
Content is the catalyst that 0.3w% and Mg contents are 0.3w%.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 18】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ca is 0.4 gram, Sr is 0.3 gram and Ba
For 0.3 gram of Cu (OH)2、Ca(OH)2、Sr(OH)2With Ba (OH)2Aqueous suspension mixing is mixed, 1 drop glacial acetic acid is added, mixes,
When standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, it is that 1w%, Ca content are 0.4w%, Sr that Cu contents, which are made,
Content is the catalyst that 0.3w% and Ba contents are 0.3w%.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 19】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ra is 0.25 gram, Be is 0.25 gram,
The Cu (OH) that Mg is 0.25 gram and Ca is 0.25 gram2、Ra(OH)2、Be(OH)2、Mg(OH)2With Ca (OH)2Mixing aqueous suspension mixes
Close, add 1 drop glacial acetic acid, mixing, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, Cu contents, which are made, is
1w%, Ra content are that 0.25w%, Be content are that 0.25w%, Mg content are the catalysis that 0.25w% and Ca contents are 0.25w%
Agent.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 20】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ra is 0.25 gram, Be is 0.25 gram,
The Cu (OH) that Sr is 0.25 gram and Ba is 0.25 gram2、Ra(OH)2、Be(OH)2、Sr(OH)2With Ba (OH)2Mixing aqueous suspension mixes
Close, add 1 drop glacial acetic acid, mixing, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, Cu contents, which are made, is
1w%, Ra content are that 0.25w%, Be content are that 0.25w%, Sr content are the catalysis that 0.25w% and Ba contents are 0.25w%
Agent.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 21】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Mg is 0.25 gram, Ca is 0.25 gram,
The Cu (OH) that Sr is 0.25 gram and Ba is 0.25 gram2、Mg(OH)2、Ca(OH)2、Sr(OH)2With Ba (OH)2Mixing aqueous suspension mixes
Close, add 1 drop glacial acetic acid, mixing, when standing 24 is small at room temperature, in vacuum drying chamber drying to constant weight, that is, Cu contents, which are made, is
1w%, Mg content are that 0.25w%, Ca content are that 0.25w%, Sr content are the catalysis that 0.25w% and Ba contents are 0.25w%
Agent.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 22】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ra is 0.2 gram, Be is 0.2 gram, Mg
The Cu (OH) that for 0.2 gram, Ca be 0.2 gram and Sr is 0.2 gram2、Ra(OH)2、Be(OH)2、Mg(OH)2、Ca(OH)2With Sr (OH)2
Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, stand at room temperature 24 it is small when, in vacuum drying chamber drying to constant weight,
It is that 1w%, Ra content are that 0.2w%, Be content are that 0.2w%, Mg content are that 0.2w%, Ca content are that Cu contents, which are made,
0.2w% and Sr contents are the catalyst of 0.2w%.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 23】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ra is 0.2 gram, Be is 0.2 gram, Mg
The Cu (OH) that for 0.2 gram, Ca be 0.2 gram and Ba is 0.2 gram2、Ra(OH)2、Be(OH)2、Mg(OH)2、Ca(OH)2With Ba (OH)2
Mix aqueous suspension mixing, add 1 drop glacial acetic acid, mixing, stand at room temperature 24 it is small when, in vacuum drying chamber drying to constant weight,
It is that 1w%, Ra content are that 0.2w%, Be content are that 0.2w%, Mg content are that 0.2w%, Ca content are that Cu contents, which are made,
0.2w% and Ba contents are the catalyst of 0.2w%.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Embodiment 24】
1st, the preparation of catalyst
Sulfonic acid sodium form polystyrol cation exchange resin 7320 is washed with deionized water to outflow clear water, with 4w%'s
Salt acid soak four times, the 4w%'s of each 10 times equivalent to 7320 dry weight of sulfonic acid sodium form polystyrol cation exchange resin of use
Hydrochloric acid, soaks 4h every time, is washed with deionized to eluate and exists without chlorion afterwards, after 60 DEG C dry, that is, obtains sulphur
Acid type polystyrene cation exchange resin, its full exchange capacity are 4.10mmol/g.Take sulphur of 98 grams equivalent to butt resin
Acid type polystyrene cation exchange resin, nitrogen protection is lower and 300ml containing Cu is 1 gram, Ra is 0.2 gram, Be is 0.2 gram, Mg
For the Cu (OH) that 0.15 gram, Ca are 0.15 gram, Sr is 0.15 gram and Ba is 0.15 gram2、Ra(OH)2、Be(OH)2、Mg(OH)2、Ca
(OH)2、Sr(OH)2With Ba (OH)2Mixing aqueous suspension mixing, adds 1 drop glacial acetic acid, mixes, when standing 24 is small at room temperature,
To constant weight, that is, it is that 1w%, Ra content are that 0.2w%, Be content are 0.2w%, Mg content that Cu contents, which are made, for vacuum drying chamber drying
It is that 0.15w%, Sr content are the catalyst that 0.15w% and Ba contents are 0.15w% for 0.15w%, Ca content.
2nd, the synthesis of polyoxymethylene dimethyl ether
2 grams of catalyst, 100 grams of dimethoxym ethanes and 100 grams of paraformaldehydes are added in 300 milliliters of tank reactors, at 130 DEG C
With react 4h under 0.5MPa self-generated pressures, extract after sample centrifuges by gas chromatographic analysis.Polyformaldehyde two is included in product
Methyl ether and unreacted raw material dimethoxym ethane and paraformaldehyde, it forms distribution such as table 1.
【Comparative example 1】
For embodiment 1 in proportion, the catalyst used is differed only in for the drying sulfonic acid type described in embodiment 1 to gather
2 grams of styrene cation exchange resin, other process conditions are same as Example 1, the results are shown in Table 1.
Table 1
N is the degree of polymerization, product CH3O(CH2O)nCH3。
Claims (10)
1. the method for synthesizing polyoxymethylene dimethyl ethers, using dimethoxym ethane and paraformaldehyde as raw material, raw material and polyoxymethylene dimethyl ethers
Catalyst contacts, reaction generation polyoxymethylene dimethyl ether；It is characterized in that the catalyst is the sulfonic acid type of modified metal ion modification
Polystyrol cation exchange resin, the sulfonic acid polystyrene cation exchange resin include crosslinked polystyrene skeleton and
Sulfonic acid group；The modified metal is included selected from least one of IIA metals.
2. according to the method described in claim 1, it is characterized in that IIA metals in Ra, Be, Mg, Ca, Sr and Ba at least one
Kind.
3. according to the method described in claim 1, it is characterized in that the content of modified metal is more than 0 and is less than or equal in catalyst
10w%.
4. according to the method described in claim 1, it is characterized in that the full exchange capacity of the resin is 3.0~6.0mmol/g.
5. according to the method described in claim 1, it is characterized in that the resin is gel-type or macroporous type.
6. according to the method described in claim 1, it is characterized in that dimethoxym ethane: the mass ratio of paraformaldehyde is (0.01~100): 1.
7. according to the method described in claim 1, it is characterized in that catalyst amount is the 0.05~10% of raw material weight.
8. according to the method described in claim 1, it is characterized in that reaction temperature is 70~200 DEG C.
9. according to the method described in claim 1, it is characterized in that reaction pressure is 0.2~6MPa.
10. according to the method described in claim 1, it is characterized in that when the reaction time is 1 to 20 small.
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| CN103880612A (en) * | 2012-12-19 | 2014-06-25 | 中国石油化工股份有限公司 | Method for synthesizing polyoxymethylene dimethyl ether from paraformaldehyde |
| CN104549502A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Catalyst for synthesis of polyoxymethylene dimethyl ether and application of catalyst |
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| CN103880612A (en) * | 2012-12-19 | 2014-06-25 | 中国石油化工股份有限公司 | Method for synthesizing polyoxymethylene dimethyl ether from paraformaldehyde |
| CN104549502A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Catalyst for synthesis of polyoxymethylene dimethyl ether and application of catalyst |
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| CN109651102A (en) * | 2017-10-10 | 2019-04-19 | 中国石油化工股份有限公司 | The preparation method of polyoxymethylene dimethyl ether |
| CN109651102B (en) * | 2017-10-10 | 2021-12-28 | 中国石油化工股份有限公司 | Preparation method of polyformaldehyde dimethyl ether |
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