The catalytic wet air oxidation of aniline over Ru catalysts supported on modified Ti O_(2)(Ti O_(2),Ti_(0.9)Ce_(0.1)O_(2),Ti_(0.9)Zr_(0.1)O_(2))is investigated.A series of characterization techniques are conducted to...The catalytic wet air oxidation of aniline over Ru catalysts supported on modified Ti O_(2)(Ti O_(2),Ti_(0.9)Ce_(0.1)O_(2),Ti_(0.9)Zr_(0.1)O_(2))is investigated.A series of characterization techniques are conducted to determine the relationship between the physico-chemical properties and the catalytic performance.As a result of the good metal dispersion and large number of surface oxygen species,the Ru/Ti_(0.9)Zr_(0.1)O_(2)catalyst presents the best catalytic activity among the tested samples.The effects of the operating conditions on the reaction are investigated and the optimal reaction conditions are determined.Based on the relationship between the by-products concentration and the reaction time,the reaction path for the catalytic oxidation of aniline is established.Carbonaceous deposits on the surface of the support are known to be the main reason for catalyst deactivation.The catalysts maintain a constant activity even after three consecutive cycles.展开更多
文摘The catalytic wet air oxidation of aniline over Ru catalysts supported on modified Ti O_(2)(Ti O_(2),Ti_(0.9)Ce_(0.1)O_(2),Ti_(0.9)Zr_(0.1)O_(2))is investigated.A series of characterization techniques are conducted to determine the relationship between the physico-chemical properties and the catalytic performance.As a result of the good metal dispersion and large number of surface oxygen species,the Ru/Ti_(0.9)Zr_(0.1)O_(2)catalyst presents the best catalytic activity among the tested samples.The effects of the operating conditions on the reaction are investigated and the optimal reaction conditions are determined.Based on the relationship between the by-products concentration and the reaction time,the reaction path for the catalytic oxidation of aniline is established.Carbonaceous deposits on the surface of the support are known to be the main reason for catalyst deactivation.The catalysts maintain a constant activity even after three consecutive cycles.
