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 journalArticlepeer-review

6 Citations (Scopus)

Abstract

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/γ-Al2O3, Pt/ZrO2 and Pt/CeO2 catalyst were studied using a developed 3D sintering simulator. Experimental results were well reproduced. While Pt on γ-Al2O3 sintered significantly, Pt on ZrO2 sintered slightly and Pt on CeO2 demonstrated the highest stability against sintering.

Original languageEnglish
Pages (from-to)337-345
Number of pages9
JournalSAE International Journal of Fuels and Lubricants
Volume2
Issue number2
DOIs
Publication statusPublished - 2010 Jun 9

ASJC Scopus subject areas

  • Fuel Technology
  • Pollution

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