The Cu K-edge XAFS suggest that the Cu(II) surface complexes are Jahn-Teller distorted with an equatorial plane of oxygens at approximately 1.95 Angstrom. At pH 5, no 2nd coordination shell is observed. However, at pH 8 there is a well-defined 2nd shell which is best modeled with two ...
According to the Pt-marker test of TiAl-5wt%Nb, oxides were formed mainly by inward diffusion of oxygen. Upon thermal cyclic oxidation at 900 °C, it was shown that the addition of Cr or Nb improved the adherence of oxide scale to the substrate. 展开 ...
Preparation of Co-Fe electrodeposits and their performance in relation to oxygen evolution in 40wt% KOH at 70°Cdoi:10.1016/0360-3199(93)90135-WCo/Fe deposits were obtained on nickel substrate in a bath containing dissolved cobalt sulphate, iron nitrate and ammonium citrate at pH 9.8. The ...
a, A schematic representation of how chemical heterogeneity at molecular length scales is probed using the reaction of metal compounds to the surface OH groups. The reaction will be sterically hindered if the incoming metal reactant is larger than the accessible space to reach the oxide surface co...
求翻译:cured at 1501–2001C for 410 h, and at least 8 wt% oxygen是什么意思?待解决 悬赏分:1 - 离问题结束还有 cured at 1501–2001C for 410 h, and at least 8 wt% oxygen问题补充:匿名 2013-05-23 12:21:38 在1501-2001C治愈410 H,和至少8%的氧气 匿名 2013-05-23 12:23:18 ...
Development of Fuel Cell System Control for Sub-Zero Ambient Conditions To enable start-up in sub-zero temperatures under high water content conditions, oxygen diffusion through the cell was enhanced and a 3D fine mesh ... T Maruo,M Toida,T Ogawa,... 被引量: 0发表: 2017年 Titanium sub...
The isotopic compositions of the skarn calcites range from -1.7 to -7.3 per mil (PDB; mean -4.5°) for carbon and 3.4 to 14.0 per mil (SMOW; mean 11°) for oxygen. The isotopic compositions of the skarn calcites are also lower than that of the protolith marble. The depletion of 18...
AO2 OXYGEN SENSORAVL DiGas 4000 LightDISPEED 492BV2338EZ0147EZ7001BV2182 BO2341 MM0336 MM0338 MF0478Five gas analyzer , model : AVL digas 4000 light and AVL digas 2200TM0442A.00B05668SPTM0442A.00B05668SPB02341B02341IT3455-2069IT3455-2070IT3455-2068IT3455-2071IT3455-207808405.02705.150A...
For Ohmic contacts, gold was evaporated onto the SrRuO3, and the whole structure was Ar-ion etched to form the junction area of 0.091 mm2. Post-annealing was performed in 760 Torr O2 at 300∼350 °C for 6 h to fill oxygen vacancies introduced by Ar-ion etching as well as...
The attrition behaviour of several promising oxygen carriers tested in Chemical Looping Combustion (CLC) units has been evaluated using an air-jet apparatus based on ASTM D5757 at 20 and 800 °C. Results were evaluated to determine a general testing procedure that allows estimating the adequacy at...