Abstract The objective of this study is to investigate the catalytic performance of Cu-zeolite catalysts supported on various types of zeolites (chabazite, MFI, and BEA) for selective catalytic reduction with C3H6. 2Cu/ZSM-5 exhibited a nearly 70% de-NOx performance at 360 °C, Cu/SSZ-13 and Cu/BETA exhibited less than 60%. The loading of Cu also exhibited different de-NOx performances, which were related to the chemical states of Cu. The isolated Cu2+ ion was favorable to the NOx reduction compared to the bulk CuOx species. The effects of O2, CO2 concentrations and hydrothermal aging were investigated for the 2Cu/ZSM-5 catalyst.

中文翻译：

---

Cu负载量和沸石拓扑结构对C3H6在Cu/沸石催化剂上选择性催化还原的影响

摘要 本研究的目的是研究负载在各种类型沸石（菱沸石、MFI 和 BEA）上的 Cu-沸石催化剂对 C3H6 选择性催化还原的催化性能。2Cu/ZSM-5 在 360 °C 下表现出近 70% 的脱硝性能，Cu/SSZ-13 和 Cu/BETA 表现出不到 60%。Cu的负载也表现出不同的脱硝性能，这与Cu的化学状态有关。与本体 CuOx 物质相比，分离的 Cu2+ 离子有利于 NOx 的还原。研究了 O2、CO2 浓度和水热老化对 2Cu/ZSM-5 催化剂的影响。