摘要：在(zai)(zai)富(fu)氧條(tiao)件下,考察了C3H6和(he)C2H5OH在(zai)(zai)Ag/Al2O3、In/Al2O3、Sn/Al2O3、Co/Al2O3、Pt/Al2O3和(he)Ag/Al2O3+Pt/Al2O3組合催(cui)(cui)化(hua)(hua)劑(ji)(ji)上(shang)(shang)選(xuan)擇性(xing)(xing)(xing)還原NO的性(xing)(xing)(xing)能.結果表(biao)明,Ag/Al2O3具有最(zui)高的NO還原活性(xing)(xing)(xing).在(zai)(zai)負載型過渡金屬氧化(hua)(hua)物催(cui)(cui)化(hua)(hua)劑(ji)(ji)上(shang)(shang),會生(sheng)(sheng)成顯(xian)著(zhu)量的CO,其HC和(he)CO氧化(hua)(hua)轉(zhuan)化(hua)(hua)溫(wen)度也遠遠高于Pt/Al2O3催(cui)(cui)化(hua)(hua)劑(ji)(ji).串聯組合Ag/Al2O3+Pt/Al2O3催(cui)(cui)化(hua)(hua)劑(ji)(ji)可顯(xian)著(zhu)拓寬活性(xing)(xing)(xing)溫(wen)度范圍,促進HC和(he)CO氧化(hua)(hua),降低N2O和(he)CH3CHO生(sheng)(sheng)成量.

關鍵詞：貧燃  汽車尾氣  Al₂O₃  催(cui)化還(huan)原

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