The present work focuses on a harmless treatment of hazardous substances in spent commercial selective catalytic reduction (SCR) catalyst by using cement as a binder. The spent V₂O₅‐WO₃/TiO₂ SCR catalysts were ground and mixed with the cement to prepare the solidified products, according to a simple method in this study. The solidified products were subsequently submitted to a characterization process based on inductively coupled plasma mass spectrometry (ICP‐MS), X‐ray diffraction (XRD), X‐ray fluorescence (XRF), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and N₂ adsorption–desorption analysis. The leaching characteristics of hazardous substances, such as V, As, Cr and Pb, in solidified products were studied and the effects of mixed ratio between deactivated SCR catalyst and cement on leaching characteristics of hazardous substances were investigated.

中文翻译：

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用过的商用SCR催化剂进行水泥固化/稳定有毒物质

本工作着重于通过使用水泥作为粘合剂，对用过的商业选择性催化还原（SCR）催化剂中的有害物质进行无害处理。根据本研究中的一种简单方法，将用过的V ₂ O ₅ -WO ₃ / TiO ₂ SCR催化剂研磨并与水泥混合以制备固化产物。随后将固化产物进行基于电感耦合等离子体质谱（ICP-MS），X射线衍射（XRD），X射线荧光（XRF），傅里叶变换红外光谱（FTIR），扫描电子显微镜的表征过程（SEM）和N ₂吸附-解吸分析。研究了固化产物中V，As，Cr，Pb等有害物质的浸出特性，研究了失活SCR催化剂与水泥的混合比对有害物质浸出特性的影响。