Mn-FeO_(x)/PPS复合滤料的制备及低温脱硝性能  

Preparation and Low Temperature Denitration Property ofMn-FeO_(x)/PPS Composite Filter Materials

作　　者：张延兵 张五交 李伟峰 崔怡潇 梅皓云 陈英赞 宋成建 程相龙 李晓燕 刘丽华 李刚 任海波 汪谢 ZHANG Yanbing;ZHANG Wujiao;LI Weifeng;CUI Yixiao;MEI Haoyun;CHEN Yingzan;SONG Chengjian;CHENG Xianglong;LI Xiaoyan;LIU Lihua;LI Gang;REN Haibo;WANG Xie(College of Material and Chemical Engineer,Henan University of Urban Construction,Pingdingshan 467000,China;Zhongping Energy Chemical Group(Xuchang)Shoushan Coking Co.,Ltd.,Pingdingshan 467000,China;College of Chemistry and Chemical Engineering,Anqing Normal University,Anqing 246011,China)

机构地区：[1]河南城建学院材料与化工学院,河南平顶山467000 [2]中平能化集团(许昌)首山焦化有限公司,河南平顶山467000 [3]安庆师范大学化学化工学院,安徽安庆246011

出　　处：《材料科学与工程学报》2023年第3期467-472,488,共7页Journal of Materials Science and Engineering

基　　金：河南省科技攻关资助项目(202102310275);河南省高校重点科研资助项目(20A430005);首山化工焦炉废气脱硫装置脱硫影响因素研究资助项目;河南城建学院青年骨干教师基金资助项目(YCJQNGGJS202110);安徽省教育厅自然科学重点研究资助项目(KJ2019A0558)。

摘　　要：通过十二烷基苯磺酸钠表面改性,结合高锰酸钾与氯化铁之间的氧化还原反应,实现Mn-FeO_(x)活性组分于聚苯硫醚(PPS)滤料表面的原位负载,制备了Mn-FeO_(x)/PPS复合滤料。研究了Mn-FeO_(x)/PPS复合滤料的低温脱硝活性,并通过多种测试方法分析了复合滤料微观结构及性能。研究表明,80~180℃之间Mn-FeO_(x)/PPS的脱硝率达到17.9%~99.2%,其中最佳1.0Mn-FeO_(x)/PPS复合滤料在该温度范围下的脱硝率达到35.7%~99.2%。这归因于活性组分主要以无定形或纳米晶存在负载于PPS滤料表面,且为高价态的MnO_(2)和Fe_(2)O_(3)氧化物。同时,1.0Mn-FeO_(x)/PPS复合滤料在6h的稳定性测试(180℃)和循环性测试(反复升降温)中,脱硝活性均在99.2%左右,表面复合滤料具有良好的工业应用前景。Combining the redox reaction between KMnO4 and FeCl_(3),Mn-FeO_(x)active components were in-situ decorated on the surface of PPS,and the Mn-FeO_(x)/PPS composite filter materials were prepared successfully.The low temperature denitration activity of the Mn-FeO_(x)/PPS composite filter materials was studied,and the micro-structure and properties of the composites were researched.The results indicated that the composites of Mn-FeO_(x)/PPS showed 17.9%-99.2%NO conversion at 80-180℃.The denitration activity of the optimal 1.0 Mn-FeO_(x)/PPS could reach 35.7%-99.2%at 80-180℃,which was due to the formation of amorphous or nanocrystals on the surface of Mn-FeO_(x)/PPS composite,as well as the generation of the high valence states of MnO_(2) and Fe_(2)O_(3).In the long period stability test(6 h,at 180℃)and repeated heating test,1.0 Mn-FeO_(x)/PPS was possessed of excellent long term and cyclic stability performances.

关 键 词：脱硝率 脱硝复合滤料 聚苯硫醚 MnO_(2) Fe_(2)O_(3) 

分 类 号：TB34[一般工业技术—材料科学与工程]