Method for producing methacrylic acid
A methacrylic acid, regional technology, applied in the directions of organic chemistry methods, chemical instruments and methods, carboxylate preparation, etc., can solve the problems such as the inability to improve the yield of methacrylic acid and the limitation of reaction conditions.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Examples
Embodiment 1
[0034] 100 parts of ammonium paramolybdate, 2.8 parts of ammonium metavanadate and 9.2 parts of cesium nitrate were dissolved in 300 parts of water. In addition, a solution obtained by dissolving 8.2 parts of 85% by mass phosphoric acid in 10 parts of water and a solution obtained by dissolving 1.1 parts of telluric acid in 10 parts of water were added to the above solution while stirring, and the temperature was raised to 95° C. under stirring. Then, a solution obtained by dissolving 3.4 parts of copper nitrate, 7.6 parts of iron nitrate, 1.4 parts of zinc nitrate and 1.8 parts of magnesium nitrate in 80 parts of pure water was added thereto. The mixture was further stirred at 100°C for 15 minutes, and the resulting slurry was dried with a spray drier.
[0035] Add 2 parts graphite to the above 100 parts dried and mix well. The mixture is then compressed into ring-shaped tablets with an outer diameter of 5 mm, an inner diameter of 2 mm, and a length of 3 mm with a tablet pre...
Embodiment 2
[0052] 100 parts of molybdenum trioxide, 3.2 parts of vanadium pentoxide and 6.7 parts of 85% by mass phosphoric acid were mixed with 800 parts of pure water. After stirring the mixture under reflux for 3 hours, 0.5 parts of copper oxide, 0.7 parts of boric acid and 1.2 parts of germanium dioxide were added thereto, and the mixture was stirred under reflux for 2 hours. The obtained slurry was cooled to 50° C., a solution obtained by dissolving 11.2 parts of cesium bicarbonate in 30 parts of pure water was added thereto, and stirred for 15 minutes. Then, a solution obtained by dissolving 10 parts of ammonium nitrate in 30 parts of pure water was added to the slurry, and stirred for another 15 minutes. The obtained slurry containing the catalyst component was dried with a spray drier.
[0053] Add 2 parts graphite to the above 100 parts dried and mix well. The mixture is then compressed into ring-shaped tablets with an outer diameter of 5 mm, an inner diameter of 2 mm, and a l...
PUM
| Property | Measurement | Unit |
|---|---|---|
| length | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More