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Steam effects over Pd/Ce0.67Zr0.33O2-Al2O3 three-way catalyst王建强1,2,沈美庆1,王军1,高继东2,马杰2,刘双喜21. Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering& Technology, Tianjin University2. China Automotive Technology & Research Center摘 要:Ceria-zirconia-alumina (CZA) solid solution was prepared by sol-gel method......
Steam effects over Pd/Ce0.67Zr0.33O2-Al2O3 three-way catalyst王建强1,2,沈美庆1,王军1,高继东2,马杰2,刘双喜21. Key Laboratory for Green Chemical Technology of State Education Ministry, School of Chemical Engineering& Technology, Tianjin University2. China Automotive Technology & Research Center摘 要:Ceria-zirconia-alumina (CZA) solid solution was prepared by sol-gel method......
the group of Ⅳ–Ⅶ of the periodic table(where Me = Ti, V, Cr, Zr, Nb, Mo, Ta, W, Re). Carbon nanotubes were found to grow efficiently on the alloy surface with its composition containing Ti, V, Cr, Zr, Hf, Nb or Ta. The growth of CNTs was not observed when the alloy contained W or Re. Additions of oxygen and nitrogen in the alloy facilitated the formation of oxynitrides and catalyst extrusion......
decreases to 0.101 eV due to the strong interaction between the s orbital of H and the d orbital of Fe. Key words: magnesium alloy; hydrogenation mechanism; catalyst effect; density functional theory...] with an energy barrier of 0.103 eV and 0.06 eV, respectively. This suggests that in the transition elements group, Ni should be an even better catalyst than Fe and Ti for the hydrogenation of Mg, which agrees......
) Abstract:Important effects exist between precious metals and rare earths oxides in three-way catalyst, especially the coordinated effects. These effects were studied by using H2PtCl6, Pt(NH3)2(NO2)2 and Pt..., and every catalyst prepared by different precursors had an optimal pH values. It indicates that the active metals precursors and their solutions acidities have outstanding influences on the catalysts......
Effect of high-intensity ultrasonic field on process of semi-continuous casting for AZ80 magnesium alloy billets ZHANG Zhi-qiang(张志强), LE Qi-chi(乐启炽), CUI Jian-zhong(崔建忠) Key Laboratory...-intensity ultrasonic field, AZ80 magnesium alloy was semi-continuously cast. The effects of ultrasonic intensity on the as-cast microstructures and mechanical properties were investigated. The results show......
Thermostability of Al-Cu-Mg-Fe-Ni Alloy with Trace Scandium and Zirconium Yu Kun1,Li Songrui1,Li Wenxian1 (1.Department of Materials Science and Engineering, Central South University of Technology,Changsha 410083, P. R. China) 摘要:Three Al-Cu-Mg-Fe-Ni-Sc-Zr ingot metallurgy alloys with different compositions had been prepared. The hardness variations of cold-rolled alloy plates during annealing......
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Synthesis of n-Butyl Acetate by Silica Loaded Cerous Sulfate Catalyst蒋柏泉,叶志强,刘贤相,王敏炜,余晓英,张文龙摘 要:Silica was used, as a catalyst carrier, to load cerous sulfate for catalyzing the synthesis of n-butyl acetate. The main purpose of this research was to explore the feasibility of silica in improving the decentrality and activity of the catalyst. The effects......
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