负载金属的沸石吸附剂去除氰化氢。
Metal loaded zeolite adsorbents for hydrogen cyanide removal.
机构信息
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China.
出版信息
J Environ Sci (China). 2013 Apr 1;25(4):808-14. doi: 10.1016/s1001-0742(12)60138-7.
Metal (Cu, Co, or Zn) loaded ZSM-5 and Y zeolite adsorbents were prepared for the adsorption of hydrogen cyanide (HCN) toxic gas. The results showed that the HCN breakthrough capacity was enhanced significantly when zeolites were loaded with Cu. The physical and chemical properties of the adsorbents that influence the HCN adsorption capacity were analyzed. The maximal HCN breakthrough capacities were about the same for both zeolites at 2.2 mol of HCN/mol of Cu. The Cu2p XPS spectra showed that the possible species present were Cu2O and CuO. The N1s XPS data and FT-IR spectra indicated that CN(-) would be formed in the presence of Cu+/Cu2+ and oxygen gas, and the reaction product could be adsorbed onto Cu/ZSM-5 zeolite more easily than HCN.
负载金属（铜、钴或锌）的 ZSM-5 和 Y 沸石吸附剂被制备用于吸附氢氰酸（HCN）有毒气体。结果表明，当沸石负载铜时，HCN 的穿透容量显著增强。分析了影响吸附剂 HCN 吸附容量的物理和化学性质。在 2.2 摩尔 HCN/摩尔 Cu 的条件下，两种沸石的最大 HCN 穿透容量大致相同。Cu2p XPS 光谱表明，可能存在的物种为 Cu2O 和 CuO。N1s XPS 数据和 FT-IR 谱图表明，在 Cu+/Cu2+和氧气存在的情况下会形成 CN-，并且反应产物比 HCN更容易被吸附到 Cu/ZSM-5 沸石上。
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