Coal fly ash decomposes diethyl phthalate

Authors: Nishikiori H.; Tanaka N.; Shindoh J.; Sakurai K.; Fujimatsu H.; Suzuki E.; Tsuchida T.; Mitani M.; Fujii T.

Source: Research on Chemical Intermediates, Volume 29, Number 4, 2003 , pp. 441-448(8)

Publisher: VSP, an imprint of Brill

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Abstract:

Decomposition of diethyl phthalate (DEP) exposed to a coal fly ash has been investigated in water by measuring UV-VIS spectra and GC-MS. Alkaline constituents eluted from the fly ash in the liquid phase gradually hydrolyzed DEP to produce monoethyl phthalate and/or phthalic acid. These products were adsorbed on the fly ash and decarboxylated into ethyl benzoate and benzoic acid, respectively, followed by decomposition into benzenes and/or the other compounds of lower molecular weight. The fly ash acts as not only an adsorbent but also a decomposer.

Keywords: Coal fly ash; diethyl phthalate; GC-MS; decomposition.

Document Type: Research article

DOI: http://dx.doi.org/10.1163/156856703765694372

Publication date: 2003-06-01