Abstract Ordered mesoporous SBA-15 and COK-12 supports with similar mesopore diameter were loaded with 15 wt% of CuO and evaluated as adsorbents in a desulfurization process involving SOx adsorption and regeneration. Both SBA-15 and COK-12 have a hexagonal arrangement of parallel tubular mesopores. The impact of relatively small differences of the structural and textural properties of the two supports on SOx adsorption and regenerability is investigated. After impregnation with copper nitrate solution and calcination at 500 °C, the samples do not show any characteristic XRD pattern of copper-based phases, confirming the highly dispersed state of CuO, which is also checked by Transmission Electron Microscopy (TEM). The COK-CuO15 sample has slightly higher porosity than the SBA-CuO15 sample. The pore volume of both supports is slightly reduced after impregnation-calcination and shaping (Pelletized, Crushed and Sieved – PCS) steps. As for its SOx adsorptive properties, after fifteen adsorption-regeneration cycles at 400 °C, the COK-CuO15_PCS sample exhibits dynamic and total adsorption capacities higher than those of the SBA-CuO15_PCS adsorbent. In addition, both adsorbents preserve their adsorption capacities over the 15 cycles. The COK-12 support for the CuO active phase provides very promising results in comparison with the literature data for SBA-CuO15 adsorbent.

中文翻译：

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负载在 COK-12 和 SBA-15 有序介孔材料上的 CuO 用于变温 SOx 吸附

摘要 具有相似介孔直径的有序介孔 SBA-15 和 COK-12 载体负载有 15 wt% 的 CuO，并在涉及 SOx 吸附和再生的脱硫过程中作为吸附剂进行评估。SBA-15 和 COK-12 都具有平行管状介孔的六边形排列。研究了两种载体的结构和质地特性的相对较小差异对 SOx 吸附和可再生性的影响。在用硝酸铜溶液浸渍并在 500°C 下煅烧后，样品没有显示出任何铜基相的特征 XRD 图案，证实了 CuO 的高度分散状态，这也可以通过透射电子显微镜 (TEM) 进行检查。COK-CuO15 样品的孔隙率略高于 SBA-CuO15 样品。在浸渍-煅烧和成型（造粒、粉碎和筛分 - PCS）步骤后，两种载体的孔体积略有减少。至于其 SOx 吸附性能，在 400 °C 下经过 15 次吸附-再生循环后，COK-CuO15_PCS 样品的动态和总吸附容量高于 SBA-CuO15_PCS 吸附剂。此外，两种吸附剂在 15 次循环后仍保持其吸附容量。与 SBA-CuO15 吸附剂的文献数据相比，CuO 活性相的 COK-12 载体提供了非常有希望的结果。COK-CuO15_PCS 样品的动态和总吸附容量高于 SBA-CuO15_PCS 吸附剂。此外，两种吸附剂在 15 次循环后仍保持其吸附容量。与 SBA-CuO15 吸附剂的文献数据相比，CuO 活性相的 COK-12 载体提供了非常有希望的结果。COK-CuO15_PCS 样品的动态和总吸附容量高于 SBA-CuO15_PCS 吸附剂。此外，两种吸附剂在 15 次循环后仍保持其吸附容量。与 SBA-CuO15 吸附剂的文献数据相比，CuO 活性相的 COK-12 载体提供了非常有希望的结果。