Homogenous Nucleation Rates of n-Propanol Measured in the Laminar Flow Diffusion Chamber at Different Total Pressures.

0485698 - ÚCHP 2018 RIV US eng J - Článek v odborném periodiku
Neitola, K. - Hyvärinen, A.-P. - Lihavainen, H. - Wölk, J. - Strey, R. - Brus, David
Homogenous Nucleation Rates of n-Propanol Measured in the Laminar Flow Diffusion Chamber at Different Total Pressures.
Journal of Chemical Physics. Roč. 140, č. 17 (2014), č. článku 174301. ISSN 0021-9606. E-ISSN 1089-7690
Grant ostatní: AFCE(FI) 1118615
Institucionální podpora: RVO:67985858
Klíčová slova: carbon-chain length * equilibrium vapor * homogenous nucleation
Obor OECD: Physical chemistry
Impakt faktor: 2.952, rok: 2014

Nucleation rates of n-propanol were investigated in the Laminar Flow Diffusion Chamber. Nucleation temperatures between 270 and 300 K and rates between 100 and 106 cm(-3) s(-1) were achieved. Since earlier measurements of n-butanol and n-pentanol suggest a dependence of nucleation rates on carrier gas pressure, similar conditions were adjusted for these measurements. The obtained data fit well to results available from literature. A small positive pressure effect was found which strengthen the assumption that this effect is attributed to the carbon chain length of the n-alcohol [D. Brus, A. P. Hyv rinen, J. Wedekind, Y. Viisanen, M. Kulmala, V. Zd mal, J. Smolik, and H. Lihavainen, J. Chem. Phys. 128, 134312 (2008)] and might be less intensive for substances in the homologous series with higher equilibrium vapor pressure. A comparison with the theoretical approach by Wedekind et al. [Phys. Rev. Lett. 101, 12 (2008)] shows that the effect goes in the same direction but that the intensity is much stronger in experiments than in theory.
Trvalý link: http://hdl.handle.net/11104/0280658