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Aerosol Generation of Nonspherical Particles by Desublimation of Copper Phthalocyanine
Author(s) -
Dillenburger Tim,
Hellmann Albert,
Hillemann Lars,
Stintz Michael,
Ripperger Siegfried,
Antonyuk Sergiy
Publication year - 2019
Publication title -
chemical engineering and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.403
H-Index - 81
eISSN - 1521-4125
pISSN - 0930-7516
DOI - 10.1002/ceat.201800208
Subject(s) - scanning mobility particle sizer , aerosol , scanning electron microscope , copper , nozzle , particle (ecology) , adiabatic process , differential mobility analyzer , analytical chemistry (journal) , materials science , particle size , particle size distribution , chemistry , composite material , metallurgy , chromatography , thermodynamics , physics , oceanography , organic chemistry , geology
A novel generator for a defined test aerosol consisting of nonspherical particles was developed based on the desublimation of copper phthalocyanine during adiabatic cooling. Employing a brush disperser, copper phthalocyanine powder is dosed and dispersed in a nitrogen flow and sublimated in a tube furnace. Downstream the furnace new particles are formed due to the adiabatic expansion and the desublimation of the material in a laval nozzle. The generated particles were characterized employing a scanning mobility particle sizer and an aerosol particle mass analyzer to determine the size distribution and the dynamic shape factor. For the operating parameters of the generator examined here, particles with a mobility diameter between 30 and 600 nm were generated. The measured values for the dynamic shape factor of the particles were confirmed by scanning electron microscopy analysis.