Hollow ZSM-5 encapsulating Ag particles (Ag/ZSM-5-OH) have been successfully synthesized, characterized and tested in NH-SCO reaction. In comparison with Ag/AlO and Ag/ZSM-5-OH, Ag/ZSM-5 catalyst displayed the lowest (110 °C), much higher TOF and the lowest . Although fresh Ag/ZSM-5-OH catalyst showed the relatively low NH conversion, its reaction cycles stability was significant higher than that of Ag/AlO and Ag/ZSM-5 catalysts. The hollow structure of ZSM-5 zeolite could prevent sintering and/or leaching of Ag particles during NH oxidation process. Zeolite membrane formed during dissolution-recrystallization process in the surface of hollow ZSM-5 could offer good separation properties for SO. So SO did not diffuse into the hollow structure to be poisoned Ag catalyst, finally induced the outstanding SO/HO resistance.

中文翻译：

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空心 ZSM-5 沸石封装银纳米粒子用于抗 SO2 选择性催化氨氧化成氮

空心 ZSM-5 封装银颗粒 (Ag/ZSM-5-OH) 已成功合成、表征并在 NH-SCO 反应中进行测试。与Ag/Al2O和Ag/ZSM-5-OH相比，Ag/ZSM-5催化剂表现出最低的（110℃）、更高的TOF和最低的。尽管新鲜的Ag/ZSM-5-OH催化剂的NH转化率相对较低，但其反应循环稳定性显着高于Ag/Al2O和Ag/ZSM-5催化剂。 ZSM-5沸石的中空结构可以防止NH氧化过程中Ag颗粒的烧结和/或浸出。中空ZSM-5表面溶解-重结晶过程中形成的沸石膜可以为SO提供良好的分离性能。因此 SO 不会扩散到空心结构中而毒害 Ag 催化剂，最终诱导出出色的 SO/H2O 耐受性。