Cluster supported catalyst and production method therefor
A method for producing a cluster-supporting catalyst, the cluster-supporting catalyst including porous carrier particles that has acid sites, and catalyst metal clusters supported within the pores of the porous carrier particles, includes the following steps: providing a dispersion liquid containing a dispersion medium and the porous carrier particles dispersed in the dispersion medium; and in the dispersion liquid, forming catalyst metal clusters having a positive charge, and supporting the catalyst metal clusters on the acid sites within the pores of the porous carrier particles through an electrostatic interaction.
1. A method for producing a cluster-supporting catalyst,
wherein the cluster-supporting catalyst comprises porous carrier particles having acid sites, and catalyst metal clusters supported within the pores of the porous carrier particles; and
wherein the method comprises the followings steps:
providing a dispersion liquid containing a dispersion medium and the porous carrier particles dispersed in the dispersion medium, and
forming, in the dispersion liquid, catalyst metal clusters having a positive charge, and supporting the catalyst metal clusters on the acid sites within the pores of the porous carrier particles through an electrostatic interaction.
2. The method according to claim 1 , wherein the dispersion liquid is provided by pulverizing the porous carrier particles, and dispersing the pulverized porous carrier particles in the dispersion medium.
3. The method according to claim 1 , wherein the step of forming the catalyst metal clusters in the dispersion liquid comprises at least one of:
performing laser ablation in liquid,
performing microwave ablation in liquid,
performing plasma ablation in liquid, and
performing a positive-negative inversion.
4. The method according to claim 1 , wherein the step of forming the catalyst metal clusters in the dispersion liquid comprises performing a reduction reaction in liquid.
5. A method for producing a cluster-supporting catalyst,
wherein the cluster-supporting catalyst comprises porous carrier particles having acid sites, and catalyst metal clusters supported within the pores of the porous carrier particles; and
wherein the method comprises the followings steps:
providing a dispersion liquid containing a dispersion medium and the porous carrier particles dispersed in the dispersion medium,
forming, in the dispersion liquid, catalyst metal clusters having a positive charge via a reduction reaction during which the dispersion liquid is irradiated with plasma and/or microwave to promote the reduction of an ion of the catalyst metal by a reducing agent, and
supporting the catalyst metal clusters on the acid sites within the pores of the porous carrier particles through an electrostatic interaction.
6. The method according to claim 1 , wherein the dispersion medium of the dispersion liquid is an organic solvent.