The delamination of MCM-22 using shear forces in a vibratory ball mill, rather than chemical surfactants and sonication, is illustrated. The resulting material has comparable or improved physical properties compared to chemically delaminated MCM-22 without a significant loss of acid sites. The mechanical treatment affected the initial rate of 4-propylphenol cracking to phenol and propylene, a model reaction for lignin-derived aromatics, much less than chemical delamination. It also shows improved deactivation resistance for this reaction known to experience fast deactivation by pore blockage.

中文翻译：

---

减少 4-丙基苯酚裂解过程中机械化学分层分层沸石 MCM-22 催化剂的失活

说明了在振动球磨机中使用剪切力而不是化学表面活性剂和超声处理 MCM-22 的分层。与化学分层的 MCM-22 相比，所得材料具有相当或改进的物理性能，而酸位点没有显着损失。机械处理对 4-丙基苯酚裂解生成苯酚和丙烯的初始速率（木质素衍生芳烃的模型反应）的影响远小于化学分层。它还显示出改进的这种反应的抗失活性，这种反应已知会因孔堵塞而快速失活。