Multi-scale theoretical study of sintering dynamics of Pt for automotive catalyst

Ai Suzuki, Ryo Sato, Katsuyoshi Nakamura, Kotaro Okushi, Hideyuki Tsuboi, Nozomu Hatakeyama, Akira Endou, Hiromitsu Takaba, Momoji Kubo, Mark C. Williams, Akira Miyamoto

Research output: Contribution to journalConference articlepeer-review


The capability of theoretical durability studies to offer an efficient alternative methodology for predicting the potential performance of catalysts has improved in recent years. In this regard, multi-scale theoretical methods for predicting sintering behavior of Pt on various catalyst supports are being developed. Various types of Pt diffusions depending on support were confirmed by the micro-scale ultra accelerated quantum chemical molecular dynamics (UA-QCMD) method. Moreover, macro-scale sintering behavior of Pt/?-Al2O 3, Pt/ZrO2 and Pt/CeO2 catalyst were studied using a developed 3D sintering simulator. Experimental results were well reproduced. While Pt on ?-Al2O3 sintered significantly, Pt on ZrO2 sintered slightly and Pt on CeO2 demonstrated the highest stability against sintering.

Original languageEnglish
JournalSAE Technical Papers
Publication statusPublished - 2009
EventSAE 2009 Powertrains Fuels and Lubricants Meeting, FFL 2009 - San Antonio, TX, United States
Duration: 2009 Nov 22009 Nov 2


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