使用镁铝氧化物从气流中去除氯化氢。
Removal of hydrogen chloride from gaseous streams using magnesium-aluminum oxide.
作者信息
Kameda Tomohito, Uchiyama Naoya, Park Kye-Sung, Grause Guido, Yoshioka Toshiaki
机构信息
Graduate School of Environmental Studies, Tohoku University, Aoba, Aramaki, Sendai, Japan.
出版信息
Chemosphere. 2008 Oct;73(5):844-7. doi: 10.1016/j.chemosphere.2008.06.022.
Magnesium-aluminum oxide (Mg-Al oxide) obtained by thermal decomposition of Mg-Al layered double hydroxide (Mg-Al LDH) effectively removed HCl from gaseous streams. HCl removal was greater in the presence of added water vapor at all temperatures examined and increased with decreasing temperature in both the presence and absence of added water vapor. Wet and dry removal of gaseous HCl were attributed to the production of MgCl2 . 6H2O and MgCl2 . 4H2O, respectively. For the wet scrubbing process, the reconstruction reaction of Mg-Al LDH from Mg-Al oxide was the primary mechanism for increased HCl removal.
通过热分解镁铝层状双氢氧化物（Mg-Al LDH）获得的镁铝氧化物（Mg-Al oxide）能有效去除气流中的HCl。在所有测试温度下，添加水蒸气时HCl的去除量更大，且在有无添加水蒸气的情况下，HCl去除量均随温度降低而增加。气态HCl的湿式和干式去除分别归因于生成了MgCl₂·6H₂O和MgCl₂·4H₂O。对于湿式洗涤过程，Mg-Al氧化物重构为Mg-Al LDH的反应是HCl去除量增加的主要机制。
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