Title: Ozone initiated oxidation of 1,2-dichlorobenzene catalyzed by manganese loaded gamma alumina and silica
Abstract: The ozone-initiated oxidation of 1,2-dichlorobenzene catalysed by manganese supported on metal oxide (γ-Al2O3 and SiO2) at ambient temperature and pressure conditions is reported in this study. Wet impregnation method was used to synthesise various percentages of Mn loading on γ-Al2O3 and SiO2 supports. The catalysts were characterised by FT-IR, SEM, EDX, TEM, ICP-OES, BET and XRD techniques. All the reactions were conducted in an impinger glass reactor using 25 mL pure 1,2-dichlorobenzene and 0.25 g of the catalysts. The reaction products were characterised by GC–MS and FT-IR for quantitative and qualitative identification of the products. The 2.5, 5, 7.5 and 10 % of Mn impregnated on γ-Al2O3 and SiO2 were found to be more active than γ-Al2O3 and SiO2 supports. The 5 % Mn/SiO2 catalyst was found to be the most active catalyst in the ozonation reaction of 1,2-dichlorobenzene with a percentage conversion of 44 % and percentage selectivity of 88 % towards the main product mucochloric acid. Whereas, 5 % Mn/γ-Al2O3 catalyst resulted in the percentage conversion of 40 % and percentage selectivity of 86 % towards the main product mucochloric acid. The activity of the catalysts is attributed to manganese loaded on γ-Al2O3 and SiO2 supports.
Publication Year: 2020
Publication Date: 2020-06-11
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 12
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