Condensation of a supersaturated vapor of n-butanol on monodisperse submicrometer particles is investigated in a flow cloud chamber (FCC). The size dependence of critical supersaturation in the range of 20 to 90 nm is experimentally determined. Two types of aerosol, SiO 2 and TiO 2 , are tested. The
Heterogeneous Nucleation of Water Vapor on Particles of SiO2, Al2O3, TiO2, and Carbon Black
โ Scribed by Chin-Cheng Chen; Li-Chin Hung; Han-Kuan Hsu
- Publisher
- Elsevier Science
- Year
- 1993
- Tongue
- English
- Weight
- 688 KB
- Volume
- 157
- Category
- Article
- ISSN
- 0021-9797
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๐ SIMILAR VOLUMES
## 4). The Volmer theory of heterogeneous nucleation on Heterogeneous nucleation of water vapor on monodisperse subplane insoluble surfaces was confirmed by Twomey (5) but micrometer particles is investigated in a flow cloud chamber. The disagreeing results have also been reported (6). According s
E-28049 Madrid (Spain) [\*\*I This work has been carried out under the European contract No. CIl\*-CT94-003Y and Spanish CICYT project TIC96-0668. One of us (M.A.) gratefully acknowlcdges a F.P.U. fellowship from the Spanish Ministerio de Educacion y Ciencia.
Laser Raman spectroscopy (LRS), X-ray di4raction (XRD), X-ray photoelectron spectroscopy (XPS), ultraviolet and di4use re6ectance spectroscopy (UV-DRS), and temperature-programmed reduction (TPR) are used to characterize a series of TiO 2 / -Al 2 O 3 , NiO/ -Al 2 O 3 , and NiO/TiO 2 / -Al 2 O 3 samp