Catalytic NO–H2–CO–O2 reactions over Pt-supported mesoporous yttrium oxide |
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| Authors: | Ahmed Jalal Samed Takayuki Tanaka Shin Hamada Keita Ikeue Masato Machida |
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| Affiliation: | aDepartment of Nano Science and Technology, Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Kumamoto 860-8555, Japan |
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| Abstract: | Catalytic light-off of a stream of NO, H2, CO in an excess O2 has been studied over various metal oxides loading 1 wt% Pt. Because a low-surface area Y2O3 (<5 m2 g−1) was found to exhibit the highest de-NOx activity, a mesoporous Y2O3 was then synthesized from an yttrium-based surfactant mesophase templated by dodecyl sulfate  , which was anion-exchanged by acetate (AcO = CH3COO−). The product showed a 3-D mesoporosity with a large surface area (396 m2 g−1) and the Pt-supported catalyst achieved much improved light-off characteristics suitable for the low-temperature de-NOx in the presence of CO and excess O2. |
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| Keywords: | Yttrium oxide Mesoporous Template synthesis Platinum NOx |
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