用激光衍射法研究电解气泡的大小及其分布

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.

Study on electrolytic bubble size and its distribution by means of laser diffraction method

The laser diffraction method was used to investigate bubble size and distribution for electrolytic-evolving H2 and O2. The electrolyte bubble size may change over a wide range, and a statistical law is given. The effects of c.d. and electrode material on the coalescing O2 bubble are more obvious than for the H2 bubble, which are almost noncoalesced. When the electrolyte changed from alkaline to acid as solution, not only the H2 bubble increases and O2 bubbles reduced greatly, but also the distributions of both are altered.