A new synthetic method: pyromellitic dianhydride preparation by Ni–Mo/ZrO 2 catalytic oxidation

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/ZrO 2 catalyst. The catalyst ach...

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Bibliographic Details
Published in:Reaction chemistry & engineering 2024-05, Vol.9 (6), p.1474-1480
Main Authors: Pang, Shibo, Feng, Baicheng, Xin, Huifen, Song, Fei, Lv, Zhiguo, Jin, Yan, Zhang, Zhida
Format: Article
Language:English
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Summary: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/ZrO 2 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.
ISSN:2058-9883
2058-9883
DOI:10.1039/D3RE00607G