ES402298A3 - Procedure for the decoloration and purification of raw tereftal acid. (Machine-translation by Google Translate, not legally binding) - Google Patents
Procedure for the decoloration and purification of raw tereftal acid. (Machine-translation by Google Translate, not legally binding)Info
- Publication number
- ES402298A3 ES402298A3 ES402298A ES402298A ES402298A3 ES 402298 A3 ES402298 A3 ES 402298A3 ES 402298 A ES402298 A ES 402298A ES 402298 A ES402298 A ES 402298A ES 402298 A3 ES402298 A3 ES 402298A3
- Authority
- ES
- Spain
- Prior art keywords
- translation
- purification
- machine
- legally binding
- google translate
- 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.)
- Expired
Links
- 238000000034 method Methods 0.000 title abstract 2
- 238000000746 purification Methods 0.000 title abstract 2
- 239000002253 acid Substances 0.000 title 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 abstract 4
- 230000003647 oxidation Effects 0.000 abstract 3
- 238000007254 oxidation reaction Methods 0.000 abstract 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 abstract 2
- 229910001882 dioxygen Inorganic materials 0.000 abstract 2
- 150000001491 aromatic compounds Chemical class 0.000 abstract 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 abstract 1
- 239000003054 catalyst Substances 0.000 abstract 1
- 230000003197 catalytic effect Effects 0.000 abstract 1
- 238000004042 decolorization Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 229910001385 heavy metal Inorganic materials 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002904 solvent Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Process for decolorization and purification of crude terephthalic acid, obtained by oxidation of an aromatic compound for substituted, characterized in that said crude terephthalic acid is dissolved at a temperature of at least 230ºC in an organic carboxylic acid solvent containing 2-15 % by weight of water and the solution in the liquid state is subjected to catalytic oxidation with molecular oxygen or gas containing molecular oxygen in the presence of a heavy metal oxidation catalyst. (Machine-translation by Google Translate, not legally binding)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58714072 | 1972-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| ES402298A3 true ES402298A3 (en) | 1976-01-01 |
Family
ID=18527836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| ES402298A Expired ES402298A3 (en) | 1972-03-28 | 1972-05-02 | Procedure for the decoloration and purification of raw tereftal acid. (Machine-translation by Google Translate, not legally binding) |
Country Status (1)
| Country | Link |
|---|---|
| ES (1) | ES402298A3 (en) |
-
1972
- 1972-05-02 ES ES402298A patent/ES402298A3/en not_active Expired
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