Department of Physics and Atmospheric Science, Dalhousie University, Halifax, Nova Scotia, Canada B3H 3J5.
ACS Comb Sci. 2013 Feb 11;15(2):101-10. doi: 10.1021/co3001132. Epub 2013 Jan 15.
Impregnated activated carbons (IAC) are widely used materials for the removal of toxic gases in personal respiratory protection applications. The combinatorial method has been employed to prepare IACs containing different types of metal oxides in various proportions and evaluate their adsorption performance for low molecular weight gases, such as SO(2) and NH(3), under dry conditions. Among the metal oxides used for the study, Mn(3)O(4) was found to have the highest capacity for retaining SO(2) gas under dry conditions. NiO and ZnO were found to have similar NH(3) adsorption capacities which are higher than the NH(3) capacities observed for the other metal oxide impregnants used in the study. Although Cu- or Zn-based impregnants and their combinations have been extensively studied and used as gas adsorbents, neither Mn(3)O(4) nor NiO have been incorporated in the formulations used. In this study, ternary libraries of IACs with various combinations of CuO/ZnO/Mn(3)O(4) and CuO/ZnO/NiO were studied and evaluated for their adsorption of SO(2) and NH(3) gases. Combinations of CuO, ZnO, and Mn(3)O(4) were found to have the potential to be multigas adsorbents compared to formulations that contain NiO.
浸渍活性炭（IAC）是广泛用于个人呼吸保护应用中去除有毒气体的材料。已经采用组合方法制备了含有不同类型金属氧化物的 IAC，其比例不同，并在干燥条件下评估了它们对低分子量气体（如 SO(2)和 NH(3)）的吸附性能。在所研究的金属氧化物中，发现 Mn(3)O(4)在干燥条件下对 SO(2)气体的保留能力最高。发现 NiO 和 ZnO 具有相似的 NH(3)吸附能力，高于研究中使用的其他金属氧化物浸渍剂观察到的 NH(3)容量。尽管 Cu 或 Zn 基浸渍剂及其组合已被广泛研究并用作气体吸附剂，但 Mn(3)O(4)或 NiO 均未包含在所用配方中。在这项研究中，研究了具有各种组合的 CuO/ZnO/Mn(3)O(4)和 CuO/ZnO/NiO 的 IAC 三元库，并评估了它们对 SO(2)和 NH(3)气体的吸附。与包含 NiO 的配方相比，发现 CuO、ZnO 和 Mn(3)O(4)的组合具有成为多气体吸附剂的潜力。
