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Cu-Mn-O catalysts were prepared by co-precipitation and hydrothermal method at the different calcination temperature. These catalysts were characterized by BET, XRD, SEM and the catalytic activity for the reduction of NO by propane was evaluated. XRD results showed that Cu1.5Mn1.5O4 was the main phase in all these samples. The NO conversion over the catalysts prepared by hydrothermal method was markedly...
Cu-Mn mixed oxide catalysts have been prepared by citric acid complex method and evaluated in the catalytic combustion of methyl acetate. The catalysts are characterized by X-ray diffraction (XRD) and Temperature-programmed reduction (TPR). Doping an appropriate amount of Cu in Mn3O4 is favorable for the formation of a stable solid solution. Thus, the redox property of the catalyst can be enhanced...
Ag/γ-Al2O3 catalyst was prepared by wet impregnation method with different Ag loadings and calcination temperature, which were characterized by Brunauer-Emmett-Teller (BET), X-ray diffractometer (XRD), scanning electron microscope-energy dispersive X-ray (SEM-EDX) and their catalytic activity in NH3+NO reaction were investigated on in a quartz tubular fixed-bed microreactor to compare preparation...
The main purpose of this work is to investigate the CoOx/AC catalyst in methane chemical vapour decomposition (m-CVD) for synthesizing CNTs. The effects of catalyst preparation conditions such as metal loading, calcination and reduction temperatures on the morphology and the quality of CNTs formed is investigated. CoOx/AC catalyst samples are prepared with 5, 10, 15 and 20 wt% of cobalt oxide loadings...
Titanium dioxide nanotubes were prepared and used as catalyzers for titanium dioxide nanotubes/UV/O3 to degrade humic acid. And the optimal parameters of titanium dioxide nanotubes/UV/O3 were investigated. The combined treatment showed the synergetic effect of photocatalysis and ozonation. When calcined at 400degC, titanium dioxide nanotubes had the best catalysis for photocatalytic ozonation. With...
To control contamination of flue gas emission NOx, the auther mixed method of preparing new magnesia base catalyst and researched on denitrificating flue gas by directness catalytic decomposition. Usually removal rate of NO is regarded on the main evaluation criteria. The author analysed calcination temperature of catalyzer manufacturing process, the temperature of flue gas desorption tower, bed height...
This paper investigated the catalytic ozonation of aqueous nitrobenzene (NB) in the presence of nano-TiO2/zeolite. The removal efficiency of NB was increased from ozone alone at 12.57% to in the present of catalyst at 33.76%, significantly. The optimum calcination temperature of nano-TiO2/zeolite was found out at 600degC. Catalytic ozonation of nitrobenzene was first order reaction with respect to...
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