• 关键词：CuO /ZSM-5  浸渍法  脱硫  脱硝

• 基金项目：国家自然科学基金重点项目(No.21076025)

• 任晓光
• 北京石油化工学院化学工程学院, 北京 102617

• 李富霞
• 北京化工大学化学工程学院, 北京 100029

• 李鹏
• 北京化工大学化学工程学院, 北京 100029

• 摘要：采用浸渍法制备了不同质量分数的催化剂x%CuO/ZSM-5(x=2、4、6、8、10、12、50),并考察了其在CH₄为还原剂条件下的脱硫脱硝性能.同时,采用X射线衍射(XRD)、H₂-程序升温还原(H₂-TPR)、NH₃-程序升温脱附(NH₃-TPD)、比表面积(BET)、扫描电子显微镜与能谱分析(SEM-EDS)等测试手段对催化剂进行表征.实验结果表明:10%CuO/ZSM-5催化剂的活性组分具有较好的晶型结构,且高度分散在ZSM-5骨架中.在CH₄+NO+SO₂反应中,10%CuO/ZSM-5催化剂具有最好的脱硫脱硝活性,最高脱硫率和脱硝率分别为97.4%和94.6%.

• Abstract：2%, 4%, 6%, 8%, 10%, 12%, and 50% CuO/ZSM-5 catalysts were prepared by impregnation and the desulfurization and denitrification properties were investigated with CH₄ as the reducer. The catalysts were characterized by XRD, H₂-TPR, NH₃-TPD, BET and SEM-EDS. The experimental results showed that the active components of 10% CuO/ZSM-5 catalysts were highly dispersed in the skeleton of ZSM-5 with better crystal type structure. In the reaction of CH₄+NO+SO₂, 10% CuO/ZSM-5 catalysts had the best desulfurization and denitrafication activities. The highest desulfurization and denitrification rates were 97.4% and 94.6%, respectively.

• Key words：CuO/ZSM-5  impregnation  desulfurization  denitrification

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