CN105646165A - Dimethoxymethane preparation process - Google Patents
Dimethoxymethane preparation process Download PDFInfo
- Publication number
- CN105646165A CN105646165A CN201410636405.4A CN201410636405A CN105646165A CN 105646165 A CN105646165 A CN 105646165A CN 201410636405 A CN201410636405 A CN 201410636405A CN 105646165 A CN105646165 A CN 105646165A
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- CN
- China
- Prior art keywords
- dimethoxymethane
- methanol
- preparation process
- catalyst
- product
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- NKDDWNXOKDWJAK-UHFFFAOYSA-N dimethoxymethane Chemical compound COCOC NKDDWNXOKDWJAK-UHFFFAOYSA-N 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 7
- 229930040373 Paraformaldehyde Natural products 0.000 claims abstract description 4
- 229920002866 paraformaldehyde Polymers 0.000 claims abstract description 4
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- 239000002904 solvent Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 3
- ULSIYEODSMZIPX-UHFFFAOYSA-N phenylethanolamine Chemical compound NCC(O)C1=CC=CC=C1 ULSIYEODSMZIPX-UHFFFAOYSA-N 0.000 claims description 3
- 239000002253 acid Substances 0.000 abstract 1
- 239000003960 organic solvent Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000001891 dimethoxy group Chemical group [H]C([H])([H])O* 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000007867 post-reaction treatment Methods 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
Landscapes
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The present invention discloses a dimethoxymethane preparation process, wherein methanol and paraformaldehyde are adopted as raw materials, an acid is adopted as a catalyst, a reaction is performed in an organic solvent in an intermittent reaction manner under stirring to generate dimethoxymethane, and separation is performed to obtain the azeotrope of methanol and dimethoxymethane or the high-purity dimethoxymethane. According to the present invention, the preparation process has characteristics of rapid reaction and high conversion rate, and is suitable for the organic chemical industry field.
Description
Technical field
The invention belongs to technical field of chemical synthesis, be specifically related to the preparation technology of a kind of dimethoxymethane.
Background technology
The basic processes such as the preparation technology of dimethoxymethane at least includes filtering, separates, dry. In the building-up process method of current dimethoxy, technological process is not easy to implement, and the dimethoxymethane finished product purity of generation is too low, reaction residual cannot be recycled, manufacturing process is complicated, and production efficiency is low and cost high, is not suitable for large-scale production.
Summary of the invention
For the above-mentioned technical problem overcoming prior art to exist, it is an object of the invention to, it is provided that the preparation technology of a kind of dimethoxymethane, the present invention not only manufacturing process is simple, improve work efficiency, and the dimethoxymethane product that generates is degradable, it is suitable for industrialized production.
The preparation technology of dimethoxymethane provided by the invention, comprises the following steps:
(1) being added in described solvent by described material benzenemethanol, methanol quality share in the mixture of methanol solubilizer is 70%��100%, and described raw material paraformaldehyde adds stirring in described solvent;
(2) in above-mentioned reaction system, described catalyst is added, in mass ratio, catalyst: methanol=0.005��0.15: 1, at reaction temperature 30 DEG C��110 DEG C, reacts 0.5 hour��5 hours;
(3) product is easily separated, obtains product dimethoxymethane.
The preparation technology of dimethoxymethane provided by the invention, it has the beneficial effects that, overcoming prior art, to prepare operation in dimethoxymethane technical process more, and the problem that workload is big improves work efficiency; Improve the conversion per pass of reactant and the productivity of product.
Detailed description of the invention
Below in conjunction with an embodiment, the preparation technology of dimethoxymethane provided by the invention is described in detail.
Embodiment
The preparation technology of the dimethoxymethane of the present embodiment, comprises the following steps:
(1) being added in described solvent by described material benzenemethanol, methanol quality share in the mixture of methanol solubilizer is 100%, and described raw material paraformaldehyde adds stirring in described solvent;
(2) in above-mentioned reaction system, described catalyst is added, in mass ratio, catalyst: methanol=0.15: 1, at reaction temperature 50 DEG C, reacts 5 hours;
(3) product is easily separated, obtains product dimethoxymethane.
The preparation technology of dimethoxymethane, it is not necessary to loaded down with trivial details post-reaction treatment, substantially increases properties of product, and environmentally friendly pollution-free, and technological process is easy to implement, and production cost is low, synthesis yield is high, better achieves the industrialized production of product.
Claims (1)
1. the preparation technology of a dimethoxymethane, it is characterised in that: said method comprising the steps of:
(1) being added in described solvent by described material benzenemethanol, methanol quality share in the mixture of methanol solubilizer is 70%��100%, and described raw material paraformaldehyde adds stirring in described solvent;
(2) in above-mentioned reaction system, described catalyst is added, in mass ratio, catalyst: methanol=0.005��0.15: 1, at reaction temperature 30 DEG C��110 DEG C, reacts 0.5 hour��5 hours;
(3) product is easily separated, obtains product dimethoxymethane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636405.4A CN105646165A (en) | 2014-11-13 | 2014-11-13 | Dimethoxymethane preparation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410636405.4A CN105646165A (en) | 2014-11-13 | 2014-11-13 | Dimethoxymethane preparation process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105646165A true CN105646165A (en) | 2016-06-08 |
Family
ID=56478576
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410636405.4A Pending CN105646165A (en) | 2014-11-13 | 2014-11-13 | Dimethoxymethane preparation process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105646165A (en) |
-
2014
- 2014-11-13 CN CN201410636405.4A patent/CN105646165A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160608 |