Abstract

The effect of temperature conditions on the formation of copper active sites obtained by solid state ion exchange between copper chloride and H-mordenite zeolite using X-ray absorption spectroscopy in near-threshold (XANES) and extended (EXAFS) spectral regions behind the copper K-edge measured in in-situ conditions of the reaction at temperatures varying from room temperature to 400°C. The analysis of the spectra performed using direct calculations of CuK-XANES and taking into account anharmonic corrections for CuK-EXAFS fitting enables us to establish that there is no ion exchange up to 200°C and copper remains in the CuCl state. An increase in the temperature higher 200°C leads to the incorporation of copper atoms to the zeolite framework.

中文翻译：

---

热处理对氯化铜与H-丝光沸石相互作用获得的铜活性中心形成的影响

摘要

温度条件对X射线吸收光谱法和X射线吸收光谱法在铜K后面的X射线吸收光谱法中氯化铜与H-丝光沸石之间的固态离子交换获得的铜活性位形成的影响在室温至400℃变化的温度下在反应的原位条件下测得的-边缘。使用Cu K -XANES的直接计算并考虑到Cu K -EXAFS拟合的非谐波校正进行的光谱分析，使我们能够确定在200°C以下没有离子交换，并且铜仍处于CuCl状态。温度升高到200℃以上，导致铜原子结合到沸石骨架中。