| 摘要 |
A method for synthesizing catalyst beads of bulk transmission metal carbides, nitrides and phosphides is provided. The method includes providing an aqueous suspension of transition metal oxide particles in a gel forming base, dropping the suspension into an aqueous solution to form a gel bead matrix, heating the bead to remove the binder, and carburizing, nitriding or phosphiding the bead to form a transition metal carbide, nitride, or phosphide catalyst bead. The method can be tuned for control of porosity, mechanical strength, and dopant content of the beads. The produced catalyst beads are catalytically active, mechanically robust, and suitable for packed-bed reactor applications. The produced catalyst beads are suitable for biomass conversion, petrochemistry, petroleum refining, electrocatalysis, and other applications. |
| 主权项 |
1. A method of making a catalyst bead comprising:
providing an aqueous suspension of transition metal oxide particles in a gel-forming base having a binder; dropping the suspension into an aqueous salt solution to form a gel bead matrix having therein a dispersion of metal oxide particles; heat-treating the gel bead matrix to remove the binder and strengthen the gel bead matrix; and forming at least one of a transition metal carbide bead, a transition metal nitride bead, and a transition metal phosphide catalyst bead by carburizing, nitriding, or phosphiding the gel bead matrix, respectively. |
