Phthalic Anhydride → Naphthalene

HRID 1722486Notes

Reaction equation

HRID 1722486 reaction equation
C1(=O)OC(=O)C2=CC=CC=C12.[CH:12]1[C:21]2[C:16](=[CH:17][CH:18]=[CH:19][CH:20]=2)[CH:15]=[CH:14][CH:13]=1.C1(C)C(C)=CC=CC=1>C1(C)C(C)=CC=CC=1>[CH:20]1[C:21]2[C:16](=[CH:15][CH:14]=[CH:13][CH:12]=2)[CH:17]=[CH:18][CH:19]=1

Participants

4

Reactant 2

HCID 6811Phthalic AnhydrideHCID 86743290HCID 86743290, compound

Product 1

HCID 931Naphthalene

Reagents, catalysts & solvents 1

HCID 7237O-XyleneSolvent

Procedure

A process for the manufacture of phthalic anhydride by oxidation in the gas phase of an o-xylol naphthalene mixture. By producing a solution of 1 to 80 parts by mass naphthalene in 99 to 20 parts by mass o-xylol at a temperature of 0° to 80° C., storing the solution at that temperature, heating the solution only shortly prior to the reaction to 110° to 180° C., atomizing the heated solution into a hot airflow, passing the heated solution over metal oxide catalysts in the gas phase and collecting phthalic anhydride product, a problem-free manufacture of phthalic anhydride is attained.

Sources & evidence

ORD record
ord-4a6070c0a8054f6bba9e71237678bdf7
Source dataset
uspto-grants-1989_08
Patent number
US04855458

Reaction notes

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