Catalytic oxidation of nitrobenzene in a fixed bed reactor
Makaleler > Tam Makale · 2015
Yazarlar: Canan URAZ
The Journal of Engineering and Fundamentals, Uluslararası, 2015, cilt 2, ss 1-8
Özet
Nitrobenzene (NB) removing is very difficult in the industrial waste gas streams.The recommended method is the gas phase catalytic oxidation to decrease the emission of the nitrobenzene amount before it releases to the atmosphere.In this study, the performances of the catalysts were investigated for the total oxidation of nitrobenzene by using a fixed bed reactor.In this experimental study, two different types of catalysts were used.One of them was prepared by recommended knowledge in the literature on the silica gel supported catalyst (catalyst 1: V 2 O 5 /MoO 3 /Ni 2 O 3 ).The other one was a commercial type catalyst (catalyst 2: Cu 0203 T 1/8, Engelhard).The effects of flow rates of nitrobenzene and air, temperature and type of catalyst were examined.Temperature range, space-time range and the air/nitrobenzene mole ratio range were 250-350C, 0.615*10 6 -2.96*10 6 g.sec/mole, 27.62-163.39,respectively.And the experiments were applied at atmospheric pressure and at constant nitrogen flow rate for 2 hours.According to the experimental results of catalyst 1, the maximum conversion of nitrobenzene was obtained as 75.79 %; and the maximum conversion of nitrobenzene was obtained as 87.85 % by using catalyst 2. Both catalysts are proper catalysts for total oxidation of nitrobenzene in a fixed bed reactor.Finally it can be said that, the experienced two catalysts are found successful for the total oxidation of waste gas streams that contain organic matter such as nitrobenzene in a fixed bed reactor.