Ultrasonic spray pyrolysis technique

Thermal treatment synthesis technique of mists formed from ultrasonic atomizer (Ultrasonic spray pyrolysis technique) Y203-Zr02, NiO, ZnS, BaTi03-SrTi03, MoS2, BiV04 [11-14]... 

J.H. Kim, et al, Preparation of Ni powders through ultrasonic spray pyrolysis technique . Journal of Materials Research, 18(7), (2003), 1614-1622. 

Howell, F.S. and Kisbioka, A. (1999) Characterization of hydroxyapatite powders prepared by ultrasonic spray-pyrolysis technique. Journal of Materials Science Materials in Medicine, 34,... 

E. Zaleta-Alejandre, M. Zapata-Torres, M. Garcia-Hipolito, M. Agmlar-Fmti, G. Alarcon-Flore, J. Guzman-Mendoza, and C. Falcony, Structural and Luminescent Properties of Europium Doped Ti02 Thick Filtrts Synthesized by the Ultrasonic Spray Pyrolysis Technique,... 

The concept or the basis of spray pyrolysis method assumes that one droplet forms one product particle. To date, submicrometer- to micrometer-sized particles are typically formed in a spray pyrolysis process. A variety of atomization techniques have been used ftn- solution aerosol formation, such as ultrasonic spray pyrolysis, electrospray pyrolysis, low pressure spray pyrolysis using a filter expansion aerosol generator (FEAG), salt-assisted spray pyrolysis, two-fluid pyrolysis method, etc. [15-18]. These atomization methods differ in droplet size, rate of atomization, and... 

The recent technique of nebulized spray pyrolysis (NSP) has been used to prepare aligned MWNTs bundles [62]. This technique consists in a spray generated by an ultrasonic atomizer. MWNTs with fairly uniform diameters, as well as ahgned MWNT bundles, have been obtained by using solutions of organometallic compounds, such as ferrocine, in benzene, toluene, and other hydrocarbon solvents. The advantage of NSP is the ease of scahng up to an industrial process where the reactants are fed into the furnace continuously. 

In this chapter, a summary of different techniques of spray pyrolysis with its advantages and disadvantages is presented. The process of spray pyrolysis with ultrasonic excitation is treated separately for which, a theoretical model of structuring and substructuring of aerosol particles, Si02, Ti02, carbonate calciumhydroxyapatite, and phosphor-doped wolfram bronze is developed. 

Liu, T.Q., Sakurai, O., Mizutani, N., Kato, M. Preparation of spherical zirconia fine ZnO particles by spray pyrolysis method using ultrasonic atomization techniques. J. Mater. Sci. 21, 3698-3702 (1986)... 

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