TY - JOUR
T1 - Multi-scale theoretical study of sintering dynamics of Pt for automotive catalyst
AU - Suzuki, Ai
AU - Sato, Ryo
AU - Nakamura, Katsuyoshi
AU - Okushi, Kotaro
AU - Tsuboi, Hideyuki
AU - Hatakeyama, Nozomu
AU - Endou, Akira
AU - Takaba, Hiromitsu
AU - Kubo, Momoji
AU - Williams, Mark C.
AU - Miyamoto, Akira
PY - 2009
Y1 - 2009
N2 - 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.
AB - 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.
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U2 - 10.4271/2009-01-2821
DO - 10.4271/2009-01-2821
M3 - Conference article
AN - SCOPUS:85072454390
SN - 0148-7191
JO - SAE Technical Papers
JF - SAE Technical Papers
T2 - SAE 2009 Powertrains Fuels and Lubricants Meeting, FFL 2009
Y2 - 2 November 2009 through 2 November 2009
ER -