Low-Pressure Catalytic Wet Air Oxidation of Aniline Over Co3O4/CeO2
Makaleler > Tam Makale · 2010
Yazarlar: Gülin ERSÖZ, SÜHEYDA ATALAY
Industrial & Engineering Chemistry Research, SCI Expanded İndekslerine Giren Dergi, Uluslararası, Wos, 2010, cilt 49, ss 1625-1630
DOI: 10.1021/ie901383e
Özet
Low -pressure catalytic wet air oxidation of aniline was investigated in a bubble reactor over Co 3 O 4 (10% wt)/CeO 2 . The catalyst was prepared by sol−gel technology and characterized by using scanning electron microscope, X-ray diffraction, nitrogen adsorption, and thermogravimetric analysis techniques. The aim was to search for the conditions to destroy the aniline content by avoiding production of byproducts such as ammonium, nitrate, and nitrite ions. The reaction was optimized at 0.5 g/L catalyst loading at 150 °C with a pressure of 4 atm, in 2 h with an air flow rate of 1.36 L/min. A 35.15% amount of aniline was removed, and 14% of the input nitrogen was converted into N 2 gas. To evaluate the stability of the catalyst, two consecutive runs were performed by reusing the catalyst recovered. The highest removal with the reused catalyst was found as 34.94%, showing that Co 3 O 4 /CeO 2 is a stable catalyst.