In the process of adsorption phase reaction, the adsorption layer is the reaction field. The distribution of the adsorbate in the adsorption and ethanol bulk has great effect on the reaction happened in the adsorption layer and the formation and growth of the particles. After defining the notion of distribution, the research studied the change law of different kinds of adsorbates' distribution under different temperature and water volume. With methods such as XRD and TEM, the sizes and appearances of the sample particles that were prepared under different conditions were investigated. And after compared with corresponding changing trend in distribution, the regulation rules of distribution's effect on particle size was got. The study also showed that different adsorption's distribution had lead to the change of particle size. Because the distribution of Cu(OAc)₂ is bigger than that of NaOH, the particle size of the CuO which made from the preparation of Cu(OAc)₂ is smaller. The study also found that the distribution of the absorbate was a key factor for the particle size when the experiment is undertaken under normal temperature (0～40 ℃) or the water volume is low. Either increasing of temperature or raising of water volume will lead to a bigger distribution, which will result in decreasing of particle size.

Key words: adsorption phase reaction technology, distribution, particle size