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Keyword: Pyromellitic dianhydride; Tetraoctyl Pyromellitate; selectively decarboxylation; esterifica- tion Abstract: Pyromellitic dianhydride (PMDA) was prepared by an alkali oxygen oxidation of anthra- cite and selectively decarboxylation of pyromellitic acid (PA). Tetraoctyl Pyromellitate (TOPM) was synthesized by the esterification of PMDA with isooctyl alcohol. The influence of temperature and time on the yield of PMDA was discussed. The effect of the amount of catalyst, weight ratio of PMDA and isooctyl alcohol on the percent conversion of TOPM was also investigated. The re- sults indicate that worthy chemicals such as PMDA and TOPM can be prepared from coal.

advances in engineering research/advances in engineering research

Synthesis of Pyromellitic Dianhydride (PMDA) and Tetraoctyl Pyromellitate (TOPM) by Alkali Oxygen Oxidation of Anthraeite and Esterification of PMDA with Isooctyl Alcohol