Patent ID: 9731263
Date: 2017-08-15
CPC Classifications: B01J,B22F,B82Y

Claim:
1. A process for the continuous preparation of stable suspensions of metal nanoparticles selected from the group consisting of Au, Ag, Cu, Pd, Pt and Fe, the process comprising: first, forming a combination reducing agent, chelating agent and catalyst in water; second, heating the combination in a microwave oven to a desired reaction temperature to obtain a heated combination; third, injecting, after the heated combination reaches the desired reaction temperature, a precursor salt of a metal selected from the group consisting of Au, Ag, Cu, Pd, Pt and Fe into the heated combination; and fourth, reacting the combination of precursor salt and heated combination for a time sufficient to obtain a stable suspension of metal nanoparticles, the nanoparticles having a diameter of from 1 to 250 nm, wherein the suspension is optically and dimensionally stable.