Research on NO Removal by CO-SCR on In-Ag/CeO_2-γ-Al_2O_3 Catalyst AITranslate

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1朱海洋,沈明敏,刘田东,韦书婷,胡玉海,董林,陈懿.氧化铜与CeO_2-γ-Al_2O_3混合氧化物载体之间的表面相互作用[J].催化学报（英文）,2002,23(4):325-328. 被引量：9

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Chinese Library Classification Number:O643.3[理学—物理化学]

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Denitration experiment was conducted with CO reducing agent and CeO_2-γ-Al_2O_3 catalyst loaded with In and Ag active components of different proportion.The results show that the catalyst with 8%In-8% Ag has the highest catalytic activity,and the conversion rate of NO is over 80% at 300～450 ℃.The effects were studied of the concentration of CO,CO_2 and H_2O on 8% In-8%Ag/CeO_2-γ-A_l2O_3 catalytic activity.The results show that when volume ratio of CO to NO is equal to 1.5,NO removal rate is the highest,and the catalyst also has strong H_2O and CO_2 resistance with strong denitration activity in an environment containing H_2O and CO_2.BET experiment shows that 8%In-8%Ag/CeO_2-γ-Al_2O_3 catalyst has large specific surface area and pore volume.Data from XRD and XPS show that In and Ag exist mainly in the forms of In_2O_3 and Ag_2O in the catalyst,and they strongly interact to promote the formation of AgInO_2,resulting in the high catalytic activity of 8%In-8%Ag/CeO_2-γ-Al_2O_3.