| Mn-Ce/分子筛的脱汞特性研究 |
| 摘要点击 2087 全文点击 1611 投稿时间：2014-11-23 修订日期：2015-01-13 |
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| 中文关键词 汞 催化剂 锰 铈 氧化 |
| 英文关键词 mercury catalyst Mn Ce oxidation |
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| 中文摘要 |
| 采用浸渍法在分子筛载体上负载活性锰、铈组分得到一种复合催化剂,在小型实验台架上考察了催化剂的脱汞性能,并对改性前后的样品进行XPS表征以研究制备的催化剂的活性组分的变化. 结果表明负载锰、铈组分的催化剂在300~450℃内有较高的氧化单质汞的能力,特别是在450℃时单质汞的氧化效率仍保持在80%以上. 催化剂具有较多的利于单质汞氧化的官能团,其主要靠化学吸附脱汞. 烟气中的SO2与NO对单质汞的氧化有一定的抑制作用. |
| 英文摘要 |
| The impregnation method was used to support molecular sieve with active manganese and cerium components to obtain a composite molecular sieve catalyst. The mercury removal performance of the catalyst was studied with a bench-scale setup. XPS analysis was used to characterize the sample before and after the modification in order to study the changes in the active components of the catalyst prepared. The results showed that the catalyst carrying manganese and cerium components had higher oxidation ability of elemental mercury in the temperature range of 300℃-450℃, especially at 450℃, the oxidation efficiency of elemental mercury was kept above 80%. The catalyst had more functional groups that were conducive to the oxidation of elemental mercury, and the mercury removal mainly depended on the chemical adsorption. The SO2 and NO in flue gas could inhibit the oxidation of elemental mercury to certain extent. |
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