Abstract
Treating iron-doped ZSM-5 zeolite with NO2 produced a complete change in the parameters of its 57Fe Mössbauer spectrum. The intensity of the absorption showed a dramatic decrease at 40–70 K with smooth, but anharmonic, behavior above this temperature. The results can be interpreted in terms of the modification of the iron environment to form an approximately square-well potential. This results in an asymmetric potential in which the iron becomes frozen in one region at low temperatures.
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Li, W.Q., Cashion, J.D., Pollard, R.J. et al. A Square Well Atomic Potential: NO2 Treated Iron-Doped ZSM-5 Zeolite. Journal of Radioanalytical and Nuclear Chemistry 246, 153–156 (2000). https://doi.org/10.1023/A:1006726324330
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DOI: https://doi.org/10.1023/A:1006726324330