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研究论文

Research on catalytic reduction of SO₂ on Pr O/γ-Al₂O₃ and other rare earth oxides

摘要：进行了负载于氧化铝上的镨、钕、锌、镧、钐等稀土氧化物上,CO、CH₄及H₂催化还原SO₂反应的研究。实验着重考察了PrO/γ-Al₂O₃上CO催化还原SO₂的反应,测定了不同反应温度、不同反应物配比及不同空速下的活性,同时对Pro/γ-Al₂O₃催化剂进行了TPD、TG、XRD、XPS表征。结果表明,稀土氧化物具有非常高的CO催化还

Abstract：The rare earth oxides supported by γ Al₂O₃ were prepared by the method of impregnation. Several methods(TPD, TG, XR Dand XPS)have been used to characterizethe adsorption and desorption charactersof Pr O/γ Al₂O₃ catalyst.There sults demonstrated that the rareearth oxidessupported by γ Al₂O₃ are excellent catalysts for there duction ofSO₂ with CO, buthaveno muchactivityforthereduction of SO₂ with H₂, and CH₄. Itis mostlikelythatthereaction mechanism is L H, in which, the COadsorbed on Pr Oand SO₂ adsorbedon Al₂O₃ .