文献类型：期刊文献

英文题名：In Situ Hydrogen Uptake and NOx Adsorption on Bifunctional Heterogeneous Pd/Mn/Ni for a Low Energy Path toward Selective Catalytic Reduction

作者：Xie, Tianying[1];Luo, Wenjun[3];Zhou, Zhenhua[1];Sun, Wei[1,4];Wang, Qian[1];Cao, Limei[1];Yang, Ji[1,2,3]

机构：[1]East China Univ Sci & Technol, Sch Resources & Environm Engn, State Environm Protect Key Lab Environm Risk Asse, Shanghai 200237, Peoples R China;[2]Shanghai Inst Pollut Control & Ecol Secur, Shanghai 200092, Peoples R China;[3]China Ship Dev & Design Ctr, Shanghai 201108, Peoples R China;[4]Hainan Univ, Coll Ecol & Environm, 58 Renmin Rd, Haikou 570228, Hainan, Peoples R China

年份：2019

卷号：4

期号：25

起止页码：21340

外文期刊名：ACS OMEGA

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000503370500053)】；

基金：This research is based on the work supported by the National Natural Science Foundation of China (51778229).

语种：英文

摘要：Facilitating catalyst accessibility of H-2 and NOx at the catalyst surface remains a great challenge in catalytic selective catalytic reduction (SCR). The efficient conversion of NOx into N-2 under mild conditions is an attractive pathway as SCR usually requires high operating temperature which consumes extra operating energy and restricts the possible locations of an SCR device. The H-2 supply concentration of conventional H-2-SCR is relatively sparse (0.5-2%), which leads to a relatively high operating temperature to activate H. We developed a H-2-SCR process with the monolithic catalyst which combined with localized rarefied hydrogen enrichment enhanced by porous nickel and adsorption of NOx on Mn oxide with only 0.08, 0.25, and 0.42% palladium can achieve over 80% NO removal efficiency at 120, 100, and 90 degrees C. Maximizing the role of nickel foam-fixed hydrogen and Mn oxide in combination with NO can provide enriched NOx and H-2 atmosphere for adjustable valence state Pd to yield positive catalytic behavior.