Nickel aluminides, Ni3Al, NiAl: The intermetallic phase Ni3Al is the well known Y phase which is as coherent fcc precipitate responsible for the good creep properties of nickel base superalloys. Ni3Al and NiAl were also considered for high temperature structural applications mainly in the 1990-ies...
免费查询更多raneyni催化剂价格详细参数、实时报价、行情走势、优质商品批发/供应信息等,您还可以发布询价信息。
我见到多文献报道,raney-ni 还原缩硫酮成亚甲基时,没有要氢气,我想问一下大家,需不需要氢气啊 0 评论0 举报 青灯古酒白衣,设备维修 2018-05-23回答 回复7# icd化学 我做这个反应时,没有用氢气直接回流反应,发现双键还原了,你研究得怎么样了啊?谢谢交流 0 评论0 举报 别遇.,化工研发 2018-05-23...
RANEY NICKEL appears as a grayish-black powder with no distinct odor. Its basic structure consists of small particles of nickel metal. The molecular formula of RANEY NICKEL is Ni. It is insoluble in water and organic solvents. Safety information regarding RANEY NICKEL suggests that it may be ...
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the trace of some Al and O also can be detected on this spot. P4 mostly presented the distorted Ni. It can be seen that the oxygen spots (dark pink) is higher in the electrode No. 5 compared with two other electrodes. This can be seen from the EPMA of electrode No. 5, where more...
The apparent electrode activity of nickel boride pressed powder electrodes (Ni2B electrodes) is less than that of codeposited Raney nickel (RaNi) electrodes and pressed powder fractal nickel/Raney nickel (Ni/RaNi = 50/50 to 0/100) electrodes. The apparent activity of Ni2B electrodes is ...