Micro-channel distillation

The frictional pressure drop for liquid flows through micro-channels with diameter ranging from 15 to 150 pm was explored by Judy et al. (2002). Micro-channels fabricated from fused silica and stainless steel were used in these experiments. The measurements were performed with a wide variety of micro-channel diameters, lengths, and types of working fluid (distilled water, methanol, isopropanol), and showed that there were no deviations between the predictions of conventional theory and the experiment. Sharp and Adrian (2004) studied the fluid flow through micro-channels with the diameter ranging from 50 to 247 pm and Reynolds number from 20 to 2,300. Their measurements agree fairly well with theoretical data. 

Second, following a cleaning procedure with formalin, wet-chemical impregnation with palladium was performed [17]. The micro channels were exposed to a solution of 200 mg of PdCl2 in 40 ml of distilled water for 5 h. The PdCl2 was reduced to elemental Pd by formalin still present in the nanopores of the oxide layer which were generated one step before. This was followed by calcination. 

---