Patent ID: 6719821
Filing Date: 2004-04-13
Classification: B01J,B82Y,C01B,C01F,C01P,C09D

Abstract:
A method for making narrow size distribution nanoscale powders comprising:selecting a precursor mixture wherein the mixture comprises at least one metal containing precursor; the metal containing precursor has an average molecular weight of less than 2000 grams per unit mol of the metal; the metal containing precursor has a normal boiling point greater than 350K; a viscosity of the precursor mixture is between 0.1 to 250 cP; processing the precursor mixture under conditions that produce nanoscale powder from the precursor mixture; wherein the processing is conducted in a flow reactor system such that the axial velocity, axial length and axial dispersion coefficient in the flow reactor system yield a plug flow index of more than 50; and quenching the nanoscale powder using Joule Thompson quench.