作者:Joo-Youp Lee、Yong Jin Kim
DOI:10.5012/bkcs.2013.34.12.3767
日期:2013.12.20
Potassium methylselenite ($KSeO_2(OCH_3)$) was reduced to elemental selenium, Se(0), and then doped onto montmorillonite K 10 (MK10) clay to examine the interaction between elemental mercury (Hg(0)) vapor and Se(0) in an effort to understand the possible heterogeneous reaction of Hg(0) vapor and Se(0) solid. The clay was used as a cost-effective support material for uniform dispersion of Se(0). The Se(0)-doped MK10 showed an excellent reaction performance with Hg(0) under an inert nitrogen gas at 70 and $140^\circ}C$ in our lab-scale fixed-bed system. However, the precursor, $KSeO_2(OCH_3)$-doped MK10 showed a negligible reaction performance with Hg(0), suggesting that the oxidation state of selenium plays a key role in the reaction of Hg(0) vapor and selenium compounds.
甲基硒酸钾 ($KSeO_2(OCH_3)$) 被还原为元素硒 Se(0),然后掺杂到膨润土 K 10 (MK10) 粘土中,以研究元素汞 (Hg(0)) 蒸气与 Se(0) 之间的相互作用,旨在理解 Hg(0) 蒸气与 Se(0) 固体之间可能的非均相反应。该粘土被用作一种成本效益高的支撑材料,以保证 Se(0) 的均匀分散。在我们的实验室规模固定床系统中,掺有 Se(0) 的 MK10 在惰性氮气氛围下,70 和 $140^\circ}C$ 时与 Hg(0) 的反应性能出色。然而,掺有前驱体 $KSeO_2(OCH_3)$ 的 MK10 在与 Hg(0) 的反应中表现出微乎其微的反应性能,这表明硒的氧化态在 Hg(0) 蒸气与硒化合物的反应中起着关键作用。