Investigation on removal of NO and Hg0 with different Cu species in Cu-SAPO-34 zeolites
Investigation on removal of NO and Hg0 with different Cu species in Cu-SAPO-34 zeolites
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DOI：
10.1016/j.catcom.2018.10.019
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发表时间：
2019-01
影响因子：
3.7
通讯作者：
Y. Wang;Wenzhe Si;Yue Peng;Junhua Li
中科院分区：
文献类型：
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作者：
Y. Wang;Wenzhe Si;Yue Peng;Junhua Li
采用一锅法合成了一系列不同Cu含量的Cu-SAPO-34分子筛。分别测试了Cu-SAPO-34样品的NH3-SCR性能和元素汞（Hg 0）的氧化效率。随着Cu负载量的增加，催化剂中Cu 2+和CuO的量均增加，前者促进SCR反应，后者促进Hg 0的氧化。Cu ~（2+）/CuO比值也有所增加。在150-300 °C条件下，高Cu催化剂的NO转化率和Hg 0去除率均在80%以上。
A series of Cu-SAPO-34 zeolites with different Cu contents were prepared by one-pot synthesis method. The NH3-SCR performance and the oxidation of elemental mercury (Hg0) efficiency over the Cu-SAPO-34 samples were tested respectively. With the increase of Cu loadings, the amount of Cu2+and CuO were both increased, wherein the former promoted SCR reaction and the latter accelerated the Hg0oxidation. What's more, the ratio of Cu2+/CuO was also increased. The NO conversion rate and Hg0removal efficiency could be over 80% on the high Cu catalyst at 150–300 °C.