【摘 要】
：
The dispersion of CuO supported on γ-Al2O3 support was studied using X-ray diffraction.Highly dispersed or crystalline CeO2 would appear on the γ-Al2O3 support when CuO loading is below or more than i
【机 构】
：
National Engineering Laboratory of Vacuum Metallurgy,Key Laboratory of Vacuum Metallurgy for Nonferr
【出 处】
：
第四届国际表面与界面科学与工程学术会议(The Fourth International Conference on S
论文部分内容阅读
The dispersion of CuO supported on γ-Al2O3 support was studied using X-ray diffraction.Highly dispersed or crystalline CeO2 would appear on the γ-Al2O3 support when CuO loading is below or more than its monolayer coverage,and the monolayer coverage is 0.275g CuO/g (γ-Al2O3) determined by internal-standard method.Reduction peak temperature range of 0.10g CuO/g (γ-Al2O3),0.50g CuO/g (γ-Al2O3),and pure CuO samples were 420-690℃; 210-300℃,and 410-730℃; 290-380℃ respectively.Compared with 0.50g CuO/g (γ-Al2O3) and pure CeO2 samples,reduction temperature of 0.10g CuO/g (γ-Al2O3) decrease due to the interaction between the CuO and the γ-Al2O3 support.Study on the dispersion and redox properties of CuO supported on γ-Al2O3 is helpful in understanding the interaction between copper oxide and γ-Al2O3 support and designing new catalyst.
其他文献
ZrB2/W muitilayers have been synthesized with different modulation periods in an magnetron sputtering system at room temperature.The extensive measurements that include x-ray diffraction,profiler,nano
Amorphous carbon film is one of the most important anti-reflection protective films coated on infrared optics opponents.In this paper,hydrogen-free amorphous carbon films were deposited by new type su
Fe3Al intermetallic compounds coating has many merits.But its bad plasticity at room temperature limits the industrial applications.Alloying is one of the best ways which can improve the plasticity.In
The aim of present study was to address signal responses of acoustic emission (AE),vibration and torque sensors in rolling contact fatigue (RCF) tests of plasma-sprayed coating.Fe-Cr alloy coating was
The FeCrBSi coating was prepared on the surface of AISI 1045 steel by supersonic velocity plasma spraying method,and then treated by low temperature ion sulfuration to obtain the solid lubrication com
Diamond-like carbon (DLC) films were prepared by pulsed arc discharge on NiTi alloy substrate,the Biocompatibility of DLC film was evaluated.The release rate of Ni ion is reduced because DLC films blo
In this paper,a CMOS fabrication technology-based humidity sensor has been designed,manufactured and tested.The sensors use parallel plate capacitor structure,the dielectric materials absorption/desor