Theory of anomalous critical-cluster content in high-pressure binary nucleation |
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Authors: | Kalikmanov V I Labetski D G |
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Institution: | Twister Supersonic Gas Solutions, Einsteinlaan 10, 2289 CC Rijswijk, The Netherlands. Vitaly.Kalikmanov@twisterbv.com |
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Abstract: | Nucleation experiments in binary (a-b) mixtures, when component a is supersaturated and b (carrier gas) is undersaturated, reveal that for some mixtures at high pressures the a content of the critical cluster dramatically decreases with pressure contrary to expectations based on classical nucleation theory. We show that this phenomenon is a manifestation of the dominant role of the unlike interactions at high pressures resulting in the negative partial molar volume of component a in the vapor phase beyond the compensation pressure. The analysis is based on the pressure nucleation theorem for multicomponent systems which is invariant to a nucleation model. |
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