Comment on vapor phase homogeneous nucleation of CH3CN and the scaling law for onset supersaturation ratios

✍ Scribed by Barbara N. Hale; Brendan Kelly

• Publisher: Elsevier Science
• Year: 1992
• Tongue: English
• Weight: 202 KB
• Volume: 189
• Category: Article
• ISSN: 0009-2614
• DOI: 10.1016/0009-2614(92)85160-c

✦ Synopsis

We point out that the scaling law for onset vapor phase nucleation, In&,.,-0.53[Q( TJT-1) I)'*, with B= 1.77 (from CH,CN surface tension data) predicts the temperature dependence and approximate magnitude of CHpCN supersaturation ratio data, S. This is contrary to the conclusions of Wright, Caldwell and El-Shall who estimate too large a value (2.14) for Q. We note that P, the excess molecular surface entropy/k, is more reliably extracted from the temperature derivative of the surface tension data.