Synthesis of Porous Structured Three-way Catalyst Particles and Their Catalytic Performance Evaluation

In this study, porous structured catalyst particles were synthesized using template particles of various size through a template-assisted spray process. In addition, the internal structure of the synthesized porous catalyst particles was analyzed by using TEM Tomography, and the interconnected pore structures were confirmed inside the particles. Thereafter, these macroporous particles were assessed for their carbon monoxide (CO) oxidation performance, revealing a substantial influence of the macropore size on the catalytic performance. Furthermore, the porous catalyst particles prepared using 61 nm or 381 nm template particles showed the highest CO oxidation performance.