陕西科技大学学报2017，Vol.35Issue(5)：111-116,6.
K负载的Co基水滑石基氧化物用于碳烟和氮氧化物同时催化消除的研究
Performance of K supported Co-based hydrotalcite-derived mixed oxide catalysts used for simultaneous NOx-soot removal
摘要
Abstract
Co2.5Mg0.5Al0.92Ce0.08 hydrotalcite-like compounds (HTlc) were prepared by a con-stant-pH co-precipitation .After calcination ,CMACe8 catalyst was obtained as well as K-im-pregnated ones .Their structure and physico-chemical properties were examined by charac-teristic techniques .The samples were applied to soot combustion ,lean-burn NOx storage and simultaneous NOx-soot removal .The results of XRD and EXAFS suggest that the main Co-containing phase in the catalyst is Co3 O4 .According to BET data ,the specific surface area of catalysts ,which were derived from hydrotalcite-like compounds ,is large enough to absorb more reactant gas .The results of H2-TPR indicate the addition of K promote the amount of active oxygen ,leading to the high soot oxidation activity and large NOx storage capacity . However ,too much stored NOx and constant amount of soot result in low NOx reduction percentage .This demonstrates that high K-impregnation amount restrain the simultaneous NOx-soot removal reaction .The optimal value is 2% .关键词
水滑石/钾/碳烟燃烧/同时消除Key words
hydrotalcite/potassium/soot combustion/simultaneous removal分类
化学化工引用本文复制引用
代方方,郭睿,刘思玲,闫钰佳,伍洋,唐娇..K负载的Co基水滑石基氧化物用于碳烟和氮氧化物同时催化消除的研究[J].陕西科技大学学报,2017,35(5):111-116,6.基金项目
陕西省科技厅科技统筹创新工程计划项目(2014KTCL01-11) （2014KTCL01-11）
陕西科技大学博士科研启动基金项目(2016QNBJ-18) （2016QNBJ-18）
