摘要
以Fe_(2)O_(3)、正硅酸乙酯(TEOS)和N-(三甲氧基硅丙基)乙二胺三乙酸钠盐(EDTA-TMS)为原料,采用物理浸渍法制备Fe_(2)O_(3)@SiO_(2)-EDTA催化剂,并考察了介质阻挡放电(DBD)协同Fe_(2)O_(3)@SiO_(2)-EDTA催化剂对NO的脱除效果。实验结果表明:TEOS加入量和烘干温度对Fe_(2)O_(3)@SiO_(2)-EDTA的NO脱除效果的影响较为明显,最适TEOS加入量为2 mL(此时制备的催化剂中Fe_(2)O_(3)与SiO_(2)的摩尔比为1∶4),最适烘干温度为50℃;DBD协同Fe_(2)O_(3)@SiO_(2)-EDTA催化剂的NO脱除率相较于空载DBD和催化剂复合组分物理堆叠的DBD具有明显优势,在能量输入密度为720 J/L时的NO脱除率已达81.14%;烘干温度为50℃时弱磁性Fe_(2)O_(3)@SiO_(2)-EDTA的NO脱除效果好于强磁性Fe_(2)O_(3)@SiO_(2)-EDTA;该催化剂使用9次后,NO脱除率仍能达到53.21%。
The Fe_(2)O_(3)@SiO_(2)-EDTA catalyst was prepared by physical impregnation method using Fe_(2)O_(3),ethyl orthosilicate(TEOS)and N-(trimethoxysilylpropyl)ethylenediamine triacetate sodium salt(EDTA-TMS)as raw materials,and the NO removal effect by dielectric barrier discharge combined with Fe_(2)O_(3)@SiO_(2)-EDTA catalyst was investigated.The experimental results show that The effects of TEOS amount and drying temperature of Fe_(2)O_(3)@SiO_(2)-EDTA are obvious on NO removal rate,and the optimal TEOS amount is 2 mL(the molar ratio of Fe_(2)O_(3) to SiO_(2) in the prepared catalyst at this time is 1∶4),and the optimal drying temperature is 50℃;the NO removal rate by DBD combined with Fe_(2)O_(3)@SiO_(2)-EDTA catalyst has obvious advantages compared with that by the no-load DBD and DBD with physical stacked catalyst composite components,and reaches 81.14%when the input density is 720 J/L;When the drying temperature is 50℃,the NO removal effect on weak magnetic Fe_(2)O_(3)@SiO_(2)-EDTA is better than that on strong magnetic Fe_(2)O_(3)@SiO_(2)-EDTA;After use for 9 times,the NO removal rate can still reach 53.21%.
作者
刘思哲
黄超
张宁
王瑶瑶
王美艳
LIU Sizhe;HUANG Chao;ZHANG Ning;WANG Yaoyao;WANG Meiyan(School of Energy and Environmental Engineering,Hebei University of Technology,Tianjin 300401,China)
出处
《化工环保》
CAS
CSCD
北大核心
2021年第5期601-605,共5页
Environmental Protection of Chemical Industry
基金
河北省基础研究计划项目(E2018202333)
河北省创新能力提升计划项目(19453713D)
河北工业大学教学科研项目(121031)
河北省自然科学基金青年科学基金项目(E2017202250)。
