Sinter resistant catalytic material and process of producing the same

摘要

A catalytic material including particles formed of a catalytic core material having a thermally resistant porous shell coated over the catalytic core material. An oxygen storage material is dispersed within the thermally resistant porous shell. In an example, the oxygen storage material is ceria. The catalytic material can further include a catalytic support, wherein the particles are deposited on the catalytic support. The catalytic support can be a powdered oxide including a material selected from the group consisting of alumina, silica, zirconia, niobia, ceria, titania, and combinations thereof. The catalytic core can include an element selected from the group consisting of Pt, Pd, Rh, Co, Ni, Mn, Cu, Fe, Au, Ag, and combinations thereof. The porous shell can be selected from materials consisting of alumina, baria, ceria, magnesia, niobia, silica, titania, yttria, and combinations thereof.

主权项

1. A catalytic material comprising:
(a). particles formed of a catalytic core material wherein the catalytic core includes Pt; (b). a thermally resistant porous shell different from the catalytic core material and coated over the catalytic core material; and (c). a separate oxygen storage material relative to the porous shell, the oxygen storage material dispersed within the thermally resistant porous shell.