Adsorption properties of oxygen and methane on Ga-ZSM-5; the origin of the selectivity of NOx reduction using methane |
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| Authors: | Takeshi Tabata Mikako Kokitsu Osamu Okada |
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| Affiliation: | (1) Fundamental Research Laboratories, Osaka Gas Co. Ltd., Torishima 6-19-9, Konohanaku, 554 Osaka, Japan |
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| Abstract: | The adsorption properties of oxygen and methane on Ga-ZSM-5 and Cu-ZSM-5 catalysts were examined by a TPD method to clarify the extraordinary selectivity of HC-SCR using methane on Ga-ZSM-5. It was observed that Ga-ZSM-5 did not adsorb oxygen but adsorbed methane dissociatively, while on Cu-ZSM-5 oxygen was dissociatively adsorbed and reacted with adsorbed ethylene. |
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| Keywords: | methane ethylene dissociative adsorption gallium copper NOx selective reduction zeolite ZSM-5 TPD |
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