Heterogeneous Nucleation of Naphthalene Vapor on Water Surface

Heterogeneous Nucleation of n-Butanol Vapor on Submicrometer Particles of SiO2 and TiO2

“…Air tight fittings are mounted on both sides of the quartz tube. During aerosol generation, an argon stream of 0.03 to 0.1 1pm flows through a flask containing Si(OC 2 H 5 ) 4 , silicon tetraethoxide (STE), kept in an ice bath at ice temperature, to carry STE vapor out to the quartz tube, jointing with a diluting argon stream to make up 0.5 lpm as a reaction gas stream. As the reaction gas stream flows through the heating zone at 800°C, STE vapor thermally decomposes to form SiO 2 aerosol via the reaction (Si(OC 2 H 5 ) 4(g) 3 SiO 2(g) ϩ 4 C 2 H 4(g) ϩ 2 H 2 O (g) ).…”

“…(8)) and then the removal efficiency (using Eqs. [3], [4], [10], and [11], Ref. (8)); the bottom plate temperature is kept at 20°C and the top plate temperature is progressively increased until the calculated removal efficiency approaches 100%.…”

“…However, the dependency is not well known, and both consistent and inconsistent observations are reported (2)(3)(4)(5)(6)(7)(8). Juisto and Kocmond (2) have measured the heterogeneous nucleation of water vapor on submicrometer AgI and wax particles, and Liu et al (3) have made measurements on DOP particles.…”