文献类型：期刊文献

英文题名：Di-metal-doped sulfur resisting perovskite catalysts for highly efficient H2-SCR of NO

作者：Li, Tingting[1]; Sun, Wei[1]; Zhou, Zhenhua[1]; Xie, Tianying[1]; Cao, Limei[1]; Yang, Ji[1]

机构：[1] School of Resources and Environmental Engineering, State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process, East China University of Science and Technology, Shanghai, 200237, China

年份：2018

卷号：25

期号：25

起止页码：25504

外文期刊名：Environmental Science and Pollution Research

收录：EI(收录号：20242616462563)

语种：英文

外文关键词：Catalysts - Hydrogen - Lanthanum compounds - Perovskite - Rare earth elements - Reduction - Selective catalytic reduction - Sols - Sulfur - Temperature programmed desorption

摘要：Lanthanide perovskite catalysts doped with limited palladium (to improve activity) and cerium (to improve sulfur resistance) were prepared using sol–gel method. In different B sites, lanthanide perovskites were studied at harsh conditions for H2 selective catalytic reduction of NO. The activity sequence was as follows: LaCeMnPd > LaCeCoPd > LaCeFePd. LaCeMnPd had a high NO conversion of 96.6% at only 150°C. And it also had a surprising SO2 resistance in different SO2 concentrations. After cutting out SO2, NO conversion recovered rapidly to its original level, indicating that the slight deactivation was reversible. In addition, the effect of gas hourly space velocity, H2/NO ratio, O2, and SO2 concentration was studied. And XRD, energy-dispersive X-ray, SEM, XPS, H2-temperature programmed reduction, and NH3-temperature programmed desorption were performed to characterize the catalysts. [Figure not available: see fulltext.]. ? 2018, Springer-Verlag GmbH Germany, part of Springer Nature.