摘要
采用超声法,将经400℃煅烧、锰摩尔分数为40%的MnOx-CeO2负载到经硝酸处理后的聚苯硫醚(PPSN)滤料上,制备了MnOx-CeO2/PPSN滤料。以氨气为还原剂,测试了MnOx-CeO2/PPSN滤料低温SCR过程中的催化活性,同时研究了催化温度、NH3体积分数、O2体积分数、催化剂负载量等因素对其NO脱除效率的影响。研究发现,当MnOx-CeO2负载量为296 g/m2时,在催化温度130～160℃、NH3/NO略大于1、O2体积分数约5%时,MnOx-CeO2/PPSN滤料具有较高的NO脱除效率。在催化温度、NH3体积分数、O2体积分数一定时,MnOx-CeO2/PPSN滤料的NO脱除效率随负载量的增大而增大。
Polyphenylene sulfide（PPS） filter was treated by nitric acid to form PPSN filter.By the ultrasonic method,PPSN filter was loaded on 40% manganese molar fraction of MnOx-CeO2 which was calcined at 400 ℃ to form MnOx-CeO2/PPSN.The activity of MnOx-CeO2/PPSN was tested in the presence of NH3 as reducing agent for selective catalytic reduction of NO.The influences of catalyst temperature,volume fraction of NH3 and O2,and catalyst loadings on the de-NO efficiency were studied too.It was found that MnOx-CeO2/PPSN filter with the catalyst loadings of 296 g/m2 showed higher de-NO efficiency under the conditions of temperature 130~160 ℃,NH3/NO1,and O2 5%.When the catalyst temperature,the volume fraction of NH3 and O2 are constant,de-NO efficiency of MnOx-CeO2/PPSN is higher with the catalyst loading increasing.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2012年第4期452-455,共4页
Journal of Fuel Chemistry and Technology
基金
福建省科技创新平台建设计划项目(2010H2005)
尼龙6/Kevlar纤维复合材料及关键技术研发项目(JK2011004)
福州市科技计划项目(2010-PT-123)
