(1. 中南大學(xué) 冶金與環(huán)境學(xué)院，長沙 410083；
2. 武漢科技大學(xué) 國家環(huán)境保護(hù)礦冶資源利用與污染控制重點(diǎn)實(shí)驗(yàn)室，武漢 430081；
3. 永清環(huán)保股份有限公司，長沙 410001)
摘 要: 通過溶劑熱法在不同調(diào)節(jié)劑種類、濃度條件下制備UiO-66改性催化劑，并利用X射線衍射儀(XRD)、掃描電子顯微鏡(SEM)、熱重分析儀(TGA)等對(duì)催化劑進(jìn)行表征。考察不同調(diào)節(jié)劑種類、濃度對(duì) UiO-66形貌、結(jié)構(gòu)組成以及選擇性催化還原(CO-SCR)性能的影響。結(jié)果表明：UiO-66-HCl催化劑具有良好的脫硝性能和分散性以及更多的路易斯酸性位點(diǎn)和CUS(不飽和金屬位點(diǎn))。CO-SCR催化性能測試結(jié)果顯示，在對(duì)苯二甲酸(H2BDC)與調(diào)節(jié)劑的摩爾比為1:4，脫硝溫度為170 ℃時(shí)，UiO-66-HCl脫硝率達(dá)到95%。
關(guān)鍵字: UiO-66催化劑；催化脫硝；CO-SCR；配體缺陷
（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
