(1. 中南大学 冶金与环境学院，长沙 410083；
2. 武汉科技大学 国家环境保护矿冶资源利用与污染控制重点实验室，武汉 430081；
3. 永清环保股份有限公司，长沙 410001)
摘 要: 通过溶剂热法在不同调节剂种类、浓度条件下制备UiO-66改性催化剂，并利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、热重分析仪(TGA)等对催化剂进行表征。考察不同调节剂种类、浓度对 UiO-66形貌、结构组成以及选择性催化还原(CO-SCR)性能的影响。结果表明：UiO-66-HCl催化剂具有良好的脱硝性能和分散性以及更多的路易斯酸性位点和CUS(不饱和金属位点)。CO-SCR催化性能测试结果显示，在对苯二甲酸(H2BDC)与调节剂的摩尔比为1:4，脱硝温度为170 ℃时，UiO-66-HCl脱硝率达到95%。
关键字: UiO-66催化剂；催化脱硝；CO-SCR；配体缺陷
（1. School of Metallurgy and Environment, Central South University, Changsha 410083, China;
2. National Key Laboratory of Environmental Protection Mining and Metallurgy Resources Utilization and Pollution Control, Wuhan University of Science and Technology, Wuhan 430081, China;
3. Yongqing Environmental Protection Co., Ltd., Changsha 410001, China）
Abstract:UiO-66 modified catalysts were prepared by solvothermal method under different types and concentrations of regulators, and the characterization of the catalyst were detected by X-ray diffractometer (XRD), scanning electron microscope (SEM), thermogravimetric analyzer (TGA). The effects of different regulator types and concentrations on UiO-66 were investigated，including the morphology, structure and CO-SCR performance. The results show that UiO-66-HCl catalyst has better denitration performance and dispersibility, more Lewis acid sites and CUS (Coordinatively unsaturated sites).The CO-SCR performance of UiO-66-HCl shows that when the molar ratio of H2BDC to modifier is 1:4, the denitration rate reaches 95% at 170 ℃.
Key words: UiO-66 catalyst; catalytic denitration; CO-SCR; ligand defect
