JPS5476539A - Preparation of terephthalic acid - Google Patents
Preparation of terephthalic acidInfo
- Publication number
- JPS5476539A JPS5476539A JP14316877A JP14316877A JPS5476539A JP S5476539 A JPS5476539 A JP S5476539A JP 14316877 A JP14316877 A JP 14316877A JP 14316877 A JP14316877 A JP 14316877A JP S5476539 A JPS5476539 A JP S5476539A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- air
- accelerator
- reaction accelerator
- terephthalic acid
- 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.)
- Pending
Links
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title abstract 4
- 238000006243 chemical reaction Methods 0.000 abstract 6
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical compound CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 abstract 4
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract 3
- 230000003647 oxidation Effects 0.000 abstract 3
- 238000007254 oxidation reaction Methods 0.000 abstract 3
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 abstract 2
- 150000001875 compounds Chemical class 0.000 abstract 2
- 239000007791 liquid phase Substances 0.000 abstract 2
- SQYNKIJPMDEDEG-UHFFFAOYSA-N paraldehyde Chemical compound CC1OC(C)OC(C)O1 SQYNKIJPMDEDEG-UHFFFAOYSA-N 0.000 abstract 2
- 229960003868 paraldehyde Drugs 0.000 abstract 2
- 238000010405 reoxidation reaction Methods 0.000 abstract 2
- IKHGUXGNUITLKF-XPULMUKRSA-N acetaldehyde Chemical compound [14CH]([14CH3])=O IKHGUXGNUITLKF-XPULMUKRSA-N 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract 1
- 239000007789 gas Substances 0.000 abstract 1
- 239000001301 oxygen Substances 0.000 abstract 1
- 229910052760 oxygen Inorganic materials 0.000 abstract 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)
Abstract
PURPOSE: To obtain the title compound of high grade, by reoxidizing the oxidation product, obtained according to the liquid-phase oxidation of p-xylen with air using paraldehyde or acetaldehyde as a reaction accelerator, with air, etc., using the reaction accelerator in a specific temperature range.
CONSTITUTION: P-xylene is oxidized in the liquid phase with air in the presence of a Co compound in acetic acid using paraldehyde or acetaldehyde, which will not contaminate the reaction system, as a reaction accelerator at 110W140°C, and the oxidation product thus obtained is reoxidized with a gas containing oxygen and the reaction accelerator described above at the reaction temperature or above but lower than 160°C to give terephthalic acid. Preferably, the amount of the accelerator is 0.2W1 part by wt. per part by wt. of p-xylene, and that used in the reoxidation is 0.01W0.2 part by wt. per part by wt. of tenephthalic acid in the reoxidation stage.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14316877A JPS5476539A (en) | 1977-11-29 | 1977-11-29 | Preparation of terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14316877A JPS5476539A (en) | 1977-11-29 | 1977-11-29 | Preparation of terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5476539A true JPS5476539A (en) | 1979-06-19 |
Family
ID=15332490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14316877A Pending JPS5476539A (en) | 1977-11-29 | 1977-11-29 | Preparation of terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5476539A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59104345A (en) * | 1982-12-03 | 1984-06-16 | Kuraray Yuka Kk | Production of terephthalic acid suitable for direct polymerization |
-
1977
- 1977-11-29 JP JP14316877A patent/JPS5476539A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59104345A (en) * | 1982-12-03 | 1984-06-16 | Kuraray Yuka Kk | Production of terephthalic acid suitable for direct polymerization |
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