Issue 6, 2024

A new synthetic method: pyromellitic dianhydride preparation by Ni–Mo/ZrO2 catalytic oxidation

Abstract

A new method was designed and optimized for the synthesis of pyromellitic dianhydride (PMDA). PMDA was oxidatively synthesized in a fixed bed with 1,2,4-trimethylbenzene and dichloroethane as feedstock and aluminum chloride as alkylation reagent, supported by a Ni–Mo/ZrO2 catalyst. The catalyst achieved a final yield of approximately 73.7% and demonstrated good cycling performance. Density functional theory (DFT) calculations of the first reaction mechanism were carried out to demonstrate the reaction trend of the intermediate.

Graphical abstract: A new synthetic method: pyromellitic dianhydride preparation by Ni–Mo/ZrO2 catalytic oxidation

Supplementary files

Article information

Article type
Paper
Submitted
16 Nov 2023
Accepted
23 Jan 2024
First published
26 Feb 2024

React. Chem. Eng., 2024,9, 1474-1480

A new synthetic method: pyromellitic dianhydride preparation by Ni–Mo/ZrO2 catalytic oxidation

S. Pang, B. Feng, H. Xin, F. Song, Z. Lv, Y. Jin and Z. Zhang, React. Chem. Eng., 2024, 9, 1474 DOI: 10.1039/D3RE00607G

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