HuagongsheHuagongshe Chemistry Print Report · For research reference only
Acetic Acid → P-Toluic Acid
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | Oxygen | HCID 977 | — |
| Reactant | 4-Methylbenzaldehyde | HCID 7725 | — |
| Catalyst | Cobalt diacetate | HCID 6277 | — |
| Catalyst | Cobalt | HCID 104730 | — |
| Catalyst | HCID 131712030 | HCID 131712030 | — |
| Product | P-Toluic Acid | HCID 7470 | — |
| Product | Terephthalic Acid | HCID 7489 | — |
Reaction Steps
Into an autoclave were charged 100 g of glacial acetic acid, 20 g of p-tolualdehyde and 1 g of cobalt acetate (cobalt concentration 0.24% by weight based on the weight of the solution). The reaction was carried out at a temperature of 130° C. and an oxygen pressure of 3 kg/cm2 for 2 hours according to a batch process. The value of toluic acid/cobalt was about 20. As a result, the conversion of p-tolualdehyde was 99%, the yields of p-toluic acid and terephthalic acid were 55.4% by mole and 39.8% by mole, respectively, and the purity of terephthalic acid was 79.0%. Also, the acid value of terephthalic acid was 607.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US04245078 |
| Source dataset | uspto-grants-1981_01 |
| ORD ID | ord-b295877edd3142c3a0334d0721f94f6f |
| Source note | uspto-grants-1981_01 |