燃料化学学报（中英文）2026，Vol.54Issue(1)：78-88,11.DOI:10.1016/S1872-5813(25)60598-6
煤中方解石调控的活性炭结构对Mn-Ce/AC催化剂NH3-SCR性能的强化机制
Mechanism of enhancing NH3-SCR performance of Mn-Ce/AC catalyst by the structure regulation of activated carbon with calcite in coal
摘要
Abstract
To elucidate the effect of calcite-regulated activated carbon(AC)structure on low-temperature denitrification performance of SCR catalysts,this work prepared a series of Mn-Ce/De-AC-xCaCO3(x is the calcite content in coal)catalysts were prepared by the incipient wetness impregnation method,followed by acid washing to remove calcium-containing minerals.Comprehensive characterization and low-temperature denitrification tests revealed that calcite-induced structural modulation of coal-derived AC significantly enhances catalytic activity.Specifically,NO conversion increased from 88.3％of Mn-Ce/De-AC to 91.7％of Mn-Ce/De-AC-1CaCO3(210 ℃).The improved SCR denitrification activity results from the enhancement of physicochemical properties including higher Mn4+content and Ce4+/Ce3+ratio,an abundance of chemisorbed oxygen and acidic sites,which could strengthen the SCR reaction pathways(richer NH3 activated species and bidentate nitrate active species).Therefore,NO removal is enhanced.关键词
方解石/活性炭/结构/Mn-Ce/AC催化剂/NH3-SCR性能Key words
calcite/activated carbon/structure/Mn-Ce/AC catalyst/NH3-SCR performance分类
化学化工引用本文复制引用
牛健,李宇航,白宝峰,文朝璐,李林波,张慧荣,郭少青..煤中方解石调控的活性炭结构对Mn-Ce/AC催化剂NH3-SCR性能的强化机制[J].燃料化学学报（中英文）,2026,54(1):78-88,11.基金项目
Supported by the Science and Technology Cooperation and Exchange special project of Cooperation of Shanxi Province(202404041101014),the Fundamental Research Program of Shanxi Province(202403021212333),the Joint Funds of the National Natural Science Foundation of China(U24A20555),the Lvliang Key R&D of University-Local Cooperation(2023XDHZ10),the Initiation Fund for Doctoral Research of Taiyuan University of Science and Technology(20242026),and the Outstanding Doctor Funding Award of Shanxi Province(20242080). （202404041101014）
