Title of article :
Surface reduction processes of cerium oxide surfaces by H2 using ultra accelerated quantum chemical molecular dynamic study
Author/Authors :
Md. Korshed Alam، نويسنده , , Farouq Ahmed، نويسنده , , Ryuji Miura، نويسنده , , Ai Suzuki، نويسنده , , Hideyuki Tsuboi، نويسنده , , Nozomu Hatakeyama، نويسنده , , Akira Endou، نويسنده , , Hiromitsu Takaba، نويسنده , , Momoji Kubo ، نويسنده , , Akira Miyamoto ، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2011
Pages :
7
From page :
9
To page :
15
Abstract :
Ceria plays an important role in catalysis, due to its ability to store and release oxygen depending on the condition present in the catalyst environment. To analyze the role of ceria in catalytic reactions it is necessary to know the details of the interaction of ceria surface with environmentally sensitive molecules. This study was conducted using ultra accelerated quantum chemical molecular dynamics UA-QCMD to investigate the reduction processes of the (1 1 1) and (1 1 0) surfaces of ceria with molecular hydrogen as well as water desorption mechanisms from the surfaces. This simulation demonstrated that when high-energy colliding hydrogenʹs are adsorbed on the ceria, it pulls up an O atom from the ceria surfaces and results in the formation of a H2O molecule. This is the first time quantum chemical methods have been used for such reduction processes.
Keywords :
UA-QCMD , chemical reaction dynamics , Catalysts , Hydrogen , ceria
Journal title :
CATALYSIS TODAY
Serial Year :
2011
Journal title :
CATALYSIS TODAY
Record number :
1237792
Link To Document :
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