The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
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...
A series of CuO-CeO2 catalysts doped with transition metal oxides were prepared by co-precipitation method for selective CO oxidation and the effects of the additives on the catalytic performance were examined by H2-TPR, in-situ DRIFTS techniques. The results showed that the main CO adsorption site on CuO-CeO2 series catalysts was Cu+ species. The catalytic activity at lower temperatures was related...
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...
The influences of CeO2 and La2O3 on catalytic wet air oxidation of PH3 was investigated. CuO catalysts, CuO-CeO2 catalysts and CuO-La2O3 catalysts were prepared using the co-precipitation method. Results revealed that the purification efficiency of PH3 removed by the combination of Ce and Cu oxide was good. The catalystic activity of CuO-CeO2 catalysts influenced by the ratio of Cu to Ce was studied,...
Degradation of polyacrylamide(PAM) in aqueous solution was studied by using Fe2O3/Al2O3 or Fe2O3/carbon as heterogeneous catalyst in the presence of H2O2. In order to improve the catalytic activity, Effects of catalyst preparation conditions as impregnated materials, acid dipping and adding trace elements to catalyst activity were studied in the experiment. It was observed that Compared with Fe2(SO4)3,...
Catalytic ozonation of p-chlorobenzoic acid (p-CBA) in aqueous solution has been carried out where transitional metal (Ni, Cu, Mn, Co, Fe) supported activated carbon was used as catalysts. Ni supported activated carbon ( Ni/AC) catalyst, which is prepared by the dipping method with an aqueous solution of Ni(NO3)2, shows higher catalytic activity. Activated carbon and Ni/AC catalyst were characterized...
The nanocrystalline Cu2O has been successfully prepared by the solvent-thermal method using CuSO4·5H2O and NaOH as the raw materials and glucose as the reducing agent. The Cu2O prepared was characterized by X-ray diffraction(XRD) and transmission electron microscopy(TEM). The degradation of methylene blue using Cu2O as catalyst without lights and stirring was investigated, and the best catalytic condition...
The obsolete polychlorobiphenyls (PCBs)-containing capacitors could cause serious hazard to environment and human health. Microwave irradiation was adopted to decompose 2,2',5,6'-tetrachlorobiphenyl (PCB53) dissolved in cetane (to simulate capacitor oil) in alkaline environment, where cetane acted as both reaction medium and hydrogen donor. The effect of another hydrogen donor, sodium hypophosphite...
The performance of electrochemical hydrodechlorination of 2, 4-dichlorophenol (2, 4-DCP) in water using Pd-modified Cu electrode (Pd/Cu) was evaluated in a batch experiment. The results showed that, at an applied current density of 1.5 mA/cm2, 2, 4-DCP concentration decayed rapidly from 49.99 mg/L to 0.40 mg/L after 120 min with consecutive change of intermediate 2-CP. Phenol was formed as the main...
A full literature account is given on work describing the transition-metal catalyzed vinyl or addition polymerization to polynorbornene covering the years of 2001 to the beginning of 2008. The interest in vinyl polynorbornene is driven by its dielectric and mechanical properties for the technical application in microelectronics applications. Metal catalysts of Ti, Cr, Fe, Co, Ni, Pd and Cu with methylalumoxane...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.