以锐钛矿TiO₂和TiO₂（P25）为载体，采用浸渍法制备V₂O₅-WO₃/TiO₂和V₂O₅-WO₃/TiO₂（P25）催化剂。利用FESEM、EDS、XRD、TGA和激光拉曼对催化剂进行表征。以NH₃为还原剂，考察载体晶型、钒质量分数、SO₂和活性测试时间对SCR催化还原NO的性能影响。结果表明，锐钛矿TiO₂载体制备的催化剂更利于选择性催化还原反应的发生，并且钒质量分数为3%时，锐钛矿TiO₂载体制备的催化剂脱硝性能较好且抗硫性能表现良好。在空速为10 000 h^-1，反应温度为300℃，存在0.08% SO₂的条件下，催化剂在48 h内也能保持94%的脱硝率。

The V₂O₅-WO₃/TiO₂ and V₂O₅-WO₃/TiO₂(P25) catalysts are prepared by impregnation method with anatase TiO₂ and TiO₂(P25) as carriers.The catalysts are characterized by FESEM,EDS,XRD,TGA and Laser Raman in order to obtain physicochemical properties of the prepared catalysts.The influences of carrier's crystal type,mass fraction of vanadium,SO₂ and activity test time on selective catalytic reduction of NO by NH₃ are investigated NH₃.The results indicate that the catalyst prepared by anatase TiO₂ carrier is more conducive to the selective catalytic reduction,and exhibits better performance in denitration and resisting sulfur when the mass fraction of vanadium is 3%.The results also show that the denitration rate by the catalyst can maintain at 94% within 48 h under the conditions of space velocity at 10 000 h^-1,the reaction temperature being 300℃ and the presence of 0.08% SO₂.

周惠(1991-),女,硕士,研究方向为大气环境与污染控制,735496053@qq.com