Collision-coalescence mechanism primary particle formation

Industrial flame reactors are operated at high particle concentrations and high gas temperatures. As a result, particle collision rates are high primary particle size is determined by the relative rales of particle collision and coalescence (Ulrich, 1971). The collision/coalescence mechanism for particle formation is based on a series of steps assumed to proceed as follows ... 

The collision-coalescence mechanism of particle growth discussed in this chapter is thought to control primary particle size in Hame reactors. The emphasis is on the synthesis of transition metal oxide particles, which are important in the manufacture of pigments, addili ve.s, and ceramic powders. Also discussed are the factors that determine the formation of necks between particles and particle crystallinity. As demands on product quality become more stringent, more research will be needed on particle size, unifonnity. crystallinity, and aggregate formation. 

THE COLLISION-COALESCENCE MECHANISM OF PRIMARY PARTICLE FORMATION... 

Aerosol Reactors Commercial and Pilot Scale 332 Flame Reactors 332 Pyrolysis Reactors 334 Electron-Beam Dry Scrithhirif 335 Evaporation-Condensation Generators 336 The Collision-Coalescence Mechanism of Primary Particle Formation 338... 

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