用激光衍射法研究电解气泡的大小及其分布

Study on Electrolytic Bubble Size and Its Distribution by Means of Laser Diffraction Method

应用激光衍射法研究了电化学反应中析出的氢和氧气泡的大小及其分布.发现在一定电解条件下气泡的大小在较宽的范围内变化,并给出了其统计规律. 电流密度和电极材料对于较少发生聚并的氢气泡的大小及分布影响较小,对发生聚并的氧气泡影响较大.当电解液由碱性变为酸性时,氢气泡显著增大,而氧气泡急剧减小,二者的分布规律也发生根本变化.

The laser diffraction method is used to investigate bubble size and ist distribution for electrolytic evolving hydrogen and oxygen. The results show that electrolytic bubble size may change over a wide range, and a statistical law is given. The effects of current density and electrode material on the coalescing oxygen bubble are more obvious than hydrogen bubble which are almost noncoalesed, When electrolye change from alkali to acid solution, not only hydrogen bubble increase and oxygen bubble reduce greatly, but also the distributions both alter.