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Hydrogen diffusion in Zr35Ni55V10 amorphous alloy CHENG Xiao-ying(程晓英), WAHG Fang(王 芳) Institute of Materials Science, Shanghai University, Shanghai 200072, China Received 20 October 2006...; Abstract: Hydrogen diffusion in Zr35Ni55V10 amorphous alloy was measured by chronopotentiometry. The results show that at lower molar ratio of hydrogen (x＜0.06, x=n(H)/n(M)), the diffusivity......
Towards designing efficient catalyst for hydrogen oxidation reactionRui-Jie Gao1,2,Ji-Jun Zou1,21. Key Laboratory for Green Chemical Technology of the Ministry of Education,School of Chemical... of US$30 kW-1[1].On the aspect of cathodic oxygen reduction reaction (ORR),several Pt-free catalysts (such as关键词:......
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reduction mechanism of selenious acid solution[J]. Journal of Henan University (Natural Science), 1999, 29(1): 33-38. Hydrogen peroxide catalytic reduction of selenate by sulfur dioxide and formation..., the hydrogen peroxide catalytic reduction of selenate by sulfur dioxide was reported for the first time, by which the reduction rates of selenate reached 99.8%, proving a new way to recycle Se6+. A series......
, the effective diffusion coefficient and reaction rate constant increase with the rise in temperature or hydrogen content. Reduction of iron oxide pellets using an H2–CO mixture is a compound control system; the reaction rate is dominated by chemical reaction at the very beginning, competition during the reduction process subsequently, and internal gas diffusion at the end. At low hydrogen content......
reduction of oxygen and raise the rate of electrochemical step of the cathodic reduction of oxygen. Addition of a certain amount of hydrogen peroxide is confirmed to be an effective way for intensification... concentration. 3.2 Cathode processes of oxygen With respect to the mechanism of gold cyanidation, it was considered that the final product of the oxygen reduction is hydrogen peroxide[15]: ......
Hydrogen Absorption and Release Behavior in Hydrogen Decrepitation Process of Nd-Fe-B Alloys 陈晓东1,杨昌平1,陈秀云1,石大立1,朱静1,姜忠良1 (1.School of Materials Science & Engineering, Tsinghua University, Beijing 100084, China) Abstract:The behavior of hydrogen absorption and release in hydrogen decrepitation (HD) process of Nd-Fe-B alloys were investigated. The results reveal that the reactivity......
, China Received 2 December 2015; accepted 30 August 2016 Abstract: The hydrogen reduction of Panzhihua ilmenite concentrate in the temperature range of 900-1050 °C was systematically investigated... process. The apparent activation energy of the hydrogen reduction of Panzhihua ilmenite was calculated to be 117.56 kJ/mol, which was larger than that of synthetic ilmenite under the same reduction......
Phase transformation rate in hydrogen absorption of magnesium-based materialsZHANG Wen-cong(张文从)1, FANG Wen-bin(房文斌)1, YU Zhen-xing(于振兴)2, ZHAO Guo-liang(赵国亮)1, WANG Er-de(王尔德)1, SUN Zhi-jie(孙志杰)(1...:The hydrogen storage material Mg-Ni-MnO2 was prepared by mechanical alloying under the hydrogen atmosphere and its phase transformation rate in hydrogen absorption was studied using the self-designed......
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