燃料化学学报2018，Vol.46Issue(3)：319-327,9.
蜂窝状Ho改性Fe-Mn/TiO2催化剂的制备及其低温选择催化还原(SCR)脱硝性能
Preparation of honeycombed holmium-modified Fe-Mn/TiO2catalyst and its performance in the low temperature selective catalytic reduction of NOx
摘要
Abstract
A series of honeycombed holmium-modified Fe-Mn/TiO2 catalysts were prepared by moulding method and their performance in the low temperature selective catalytic reduction (SCR) of NOx was investigated. The forming process was optimized as:the mass content of water in the forming additives is 40%, in which 10% structure strengthening agent (glass fiber), 5% binder (carboxymethyl cellulose), 10% squeezing agent (glycerin),5% pore-forming agent (activated carbon) and a little lubricants (liquid paraffin) are added. The honeycombed Fe-Ho-Mn/TiO2 catalyst prepared under these conditions exhibits excellent performance in the low-temperature SCR of NOx; the conversion of NOx exceeds 90% at 120 ℃ and a good resistance to SO2and H2O is observed when the content of SO2in the stream is lower than 0. 02%. The characterization results indicated that in comparison with the parent powder holmium-modified Fe-Ho-Mn/TiO2 catalyst,the honeycombed catalyst exhibits lower surface area,more particle aggregation,and less acid sites and Mn4+species on the surface,which has a certain negative influence on the catalytic performance of Fe-Ho-Mn/TiO2.关键词
钬/选择催化还原/脱硝/低温/蜂窝/成型Key words
holmium/selective catalytic reduction/de-NOx/low temperature/honeycombed/forming分类
资源环境引用本文复制引用
黄天娇,张亚平,庄柯,陆斌,朱一闻,沈凯..蜂窝状Ho改性Fe-Mn/TiO2催化剂的制备及其低温选择催化还原(SCR)脱硝性能[J].燃料化学学报,2018,46(3):319-327,9.基金项目
The project was Supported by the Key Research Program of Jiangsu Province(BE2015677),Environmental Nonprofit Industry Research Subject(2016YFC0208102)and National Key R&D Plan(2017YFB0603201).江苏省重点研发计划项目(BE2015677),环保公益性行业科研项目(2016YFC0208102)和国家重点研发计划(2017YFB0603201)资助 （BE2015677）
