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haiwenwang

至尊木虫 (著名写手)

[交流] 怎样用 CHI660A Electrochemical workstation 软件来控制恒电流

最近要做一个电化学合成的反应,其具体实验条件如下:

A solution 3a or 3b (14 mmoles), aldehyde (7 mmoles) and NaBr (8 mmoles)
in 20 ml of alcohol was electrolyzed in the undivided cell equipped with Fe-cathode, Pt- or C-anode at 0 degree under constant current density 100 mA/cm2 until 1.5 F of electricity per mole of 3 was passed. Cyclopropanes Sa, SC + 6c, 6f and 5i are partially crystallized from reaction mixture after the end of electrolysis. The solvent was removed, residue was extracted with acetone, than acetone was evaporated and residue was crystallizedfrom mixture acetone-heptane or distilled. Pure isomers 5 and 6 were isolated by column chromatography on silicagel with eluant ether-heptane mixture .
找到了一个电化学的仪器(电化学工作站),据说可以控制恒电流,但不知道怎样用 CHI660A Electrochemical workstation 软件来控制恒电流。
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ajiao1984

银虫 (小有名气)

恒电流技术的试验方法有很多,如控制电位电解库仑法(BE)、多电流阶跃法(ISTEP)、计时电位法(CP)、电流扫描计时电位法(CPCR)等,每种方法具体的参数设定依据试验研究对象不同而有所差异,多调试就可以了。
8楼2008-03-04 08:49:35
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0158701587

金虫 (小有名气)

用计时电位法就可以CP
2楼2008-03-02 15:13:09
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0158701587

金虫 (小有名气)

Chronopotentiometry
3楼2008-03-02 15:13:52
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haiwenwang

至尊木虫 (著名写手)

楼上的这位兄弟,咱们能详细谈谈么?
4楼2008-03-02 15:29:58
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