MULTI-NOZZLE FLAME AEROSOL SYNTHESIS OF NANOPARTICLE-POWDERS

摘要

Disclosed is a flame spray method for the production of nanopowders with controlled mixedness at the submicro-level of individual nanoparticles as well as their use, in particular in heterogeneous catalysis. Said method comprises the steps of i) providing at least two spray nozzles suitable for performing flame spray pyrolysis, each spray nozzle being connected to at least one reservoir, each reservoir comprising a liquid precursor composition, each precursor composition comprising at least one dissolved or finely divided precursor compound, ii) positioning said at least two spray nozzles at an angle and in a distance suitable for getting the desired non-segregated submicron mixture of individual nanoparticles, iii) feeding said at least two liquid precursor compositions to their respective spray nozzle, iv) dispersing, igniting, combusting and mixing said at least two liquid precursor compositions, and v) collecting the nanopowder.