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(H_(2)BDC)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%。
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 H_(2)BDC to modifier is 1:4,the denitration rate reaches 95%at 170℃.
作者
李韧
何汉兵
张丽
曾婧
郑雅杰
马英
LI Ren;HE Han-bing;ZHANG Li;ZENG Jing;ZHENG Ya-jie;MA Ying(School of Metallurgy and Environment,Central South University,Changsha 410083,China;National Key Laboratory of Environmental Protection Mining and Metallurgy Resources Utilization and Pollution Control,Wuhan University of Science and Technology,Wuhan 430081,China;Yongqing Environmental Protection Co.,Ltd.,Changsha 410001,China)
出处
《中国有色金属学报》
EI
CAS
CSCD
北大核心
2021年第4期968-976,共9页
The Chinese Journal of Nonferrous Metals
基金
湖南省战略性新兴产业科技攻关与重大科技成果转化项目(2017GK4010)
湖南省自然科学基金资助项目(2019JJ40378,2020JJ4685)
国家环境保护矿冶资源利用与污染控制重点实验室开放基金课题资助项目(HB201908)
冶金减排与资源综合利用教育部重点实验室开放基金资助项目(JKF20-02)。
