Catalytic Dechlorination of Aromatic Chlorides Using Fly Ash under Mild Conditions
Abdul Ghaffar, Masaaki Tabata
Keywords: dechlorination, fly ash, organic solvents, metals, temperautre
Pages: 7-14
Abstract
An efficient dechlorination method for p-nitrochlorobenzene, p-chloroanisole and 1-chloronaphthalene on municipal waste incinerator fly ash in presence of reducing agents with water/alcohol mixtures was developed. Dechlorination reactions showed higher activity in water/isopropanol mixture at temperature <100 oC. Metal contents of fly ash (copper and lead) played a vital role to enhance dechlorination at low temperature <100 oC. Moreover, the fly ash also provided the surface to accomplish reduction and substitution reactions by adsorbing the chlorinated aromatic compounds, hydrogen and hydroxyl ions. The mechanism of dechlorination was envisaged.
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