| 查看: 858 | 回复: 2 | |||
| 本帖产生 1 个 翻译EPI ，点击这里进行查看 | |||
[交流]
化学里关于一极化曲线实验的翻译
|
|||
|
溶液A(溶液组成：柠檬酸钠：0．6 mol·L～)的稳态极化曲线如图l中曲线a所示．从 溶液的组成来看该曲线应为析氢稳态极化曲线，氢气的析出电势为一1．3 V 左右．在溶液A 中加入2．8×10 mol·L 的Na2SeO3，简称溶液B，溶液B的稳态极化曲线如图l中曲线b所示．曲线b形状和曲线a相似，都为一光滑的曲线，中间看不出有其它还原峰存在，说明曲线b仍为析氢稳态极化曲线；和曲线a有所不同的是：曲线b中氢气的析出电 势负移到一1．5 V左右，比未加Na2SeO3时，负移了0．2 V左右，证明Na2SeO3的加入使析氢的过电势增大了．为考察Na2SeO3是如何使析氢过电势增大的，本文首先用铁电极在锌锰共沉积电势处(一1．5V)恒电势电解溶液B 60 S，取出铁电极用二次蒸馏 水冲洗干净并以此电极为研究电极，在溶液A 中作稳态极化曲线如图l中曲线c所示．从图中可以看出：曲线C几乎和曲线b重合；而溶液A中并无Na2SeO3，说明铁电极在一1．5 V对溶液B恒电势电解时，Na2SeO。在电极上发生了电化学吸附，造成析氢过电势增加． |
回复此楼» 猜你喜欢
不自信的我
已经有11人回复
-
北核录用
已经有3人回复
-
要不要辞职读博？
已经有6人回复
-
实验室接单子
已经有3人回复
-
磺酰氟产物，毕不了业了！
已经有8人回复
-
求助:我三月中下旬出站，青基依托单位怎么办？
已经有10人回复
-
26申博（荧光探针方向，有机合成）
已经有4人回复
-
论文终于录用啦！满足毕业条件了
已经有26人回复
-
2026年机械制造与材料应用国际会议 （ICMMMA 2026）
已经有4人回复
-
Cas 72-43-5需要30g，定制合成，能接单的留言
已经有8人回复
zerohead
禁虫 (职业作家)
- 翻译EPI: 466
- 应助: 1 (幼儿园)
- 贵宾: 0.301
- 金币: 8727.8
- 散金: 850
- 红花: 15
- 沙发: 10
- 帖子: 3768
- 在线: 471.7小时
- 虫号: 1041741
- 注册: 2010-06-14
- 性别: GG
- 专业: 逻辑学
|
溶液A(溶液组成：柠檬酸钠：0．6 mol•L～)的稳态极化曲线如图l中曲线a所示．从 溶液的组成来看该曲线应为析氢稳态极化曲线，氢气的析出电势为一1．3 V 左右． The steady-state polarization curve of the solution A (0.6 mol/l sodium citrate) is shown in Figure 1 (curve a). By considering the compositions of the solution, the curve a shown in the figure is a steady-state polarization (curve) of the hydrogen evolution with a evolution potential of about 1.3V. |
2楼2010-07-24 17:33:36
lunshixiii
金虫 (初入文坛)
- 翻译EPI: 1
- 应助: 0 (幼儿园)
- 金币: 930.8
- 帖子: 2
- 在线: 2.4小时
- 虫号: 842930
- 注册: 2009-09-07
- 性别: GG
- 专业: 机械设计及理论
xuyuan27(金币+30, 翻译EPI+1):非常感谢！ 2010-07-26 09:54:59
|
Fig.4 shows the steady polarization curves of iron electrodes in Solution A, Solution B and special work electrode in Solution A (Curve A，Curve B and Curve C respectively). Solution A was composed of 100g/ L-1 (NH4)2SO4, and Solution B was added 0.1g/ L SeO2 in Solution A. To investigate whether SeO2 was adsorbed, the iron electrode was constant-potential electrolyzed 3 min in Solution B at -1.6V, removed and washed by double-distilled water. After the above series of processing, the electrode was used to make steady polarization curve in solution A which was Curve C. From the composition of the solutions, it can be concluded the curves are the steady polarization curve of hydrogen evolution. Comparing Curve B to Curve A, it is seen that with the adding of SeO2 the potential of hydrogen evolution moves from -1.3 V to -1.5V. Curve C is similar to curve B although the electrolytes are different. Therefore, SeO2 is able to take place adsorption on the cathode surface and facilitate further the hydrogen overvoltage. |
3楼2010-07-26 09:40:19