摘要
通过柠檬酸凝胶-浸渍法制备了具有介孔结构的纳米La<sub>0.8</sub>K<sub>0.2</sub>FeO<sub>3</sub>和La<sub>0.8</sub>K<sub>0.2</sub>Fe<sub>0.97</sub>Pt<sub>0.03</sub>O<sub>3</sub>催化剂,并利用XRD、SEM和BET对其性能进行表征。基于台架试验,研究了温度对纳米La<sub>0.8</sub>K<sub>0.2</sub>FeO<sub>3</sub>和La<sub>0.8</sub>K<sub>0.2</sub>Fe<sub>0.97</sub>Pt<sub>0.03</sub>O<sub>3</sub>催化剂同时脱除柴油机NO<sub>x</sub>和碳烟排放的影响。结果表明,在温度150<sup>3</sup>50℃范围内,La<sub>0.8</sub>K<sub>0.2</sub>Fe<sub>0.97</sub>Pt<sub>0.03</sub>O<sub>3</sub>作用下NO<sub>x</sub>转化率较高;在温度350<sup>4</sup>00℃范围内,La<sub>0.8</sub>K<sub>0.2</sub>FeO<sub>3</sub>作用下NO<sub>x</sub>转化率较高,最高达27.5%。此外,在催化剂作用下副产物N<sub>2</sub>O排放也得以降低。
The nanocrystalline,porous,perovskite La_(0.8)K_(0.2)FeO_3 and La_(0.8)K_(0.2)Fe_(0.97)Pt_(0.03)O_3catalysts were prepared by a citrate-gel process assisted dip-coating method.And the structures of catalysts were characterized by XRD and SEM.Following up on the diesel bench test,simultaneous removal of NO_x and soot particulates at the temperature range of 150℃ to 400℃ was investigated with catalysts.Results showed that NO_x conversion was higher at the temperature range of150℃ to 350℃ with La_(0.8)K_(0.2)Fe_(0.97)Pt_(0.03)O_3 catalyst.NO_x conversion was higher at the temperature range of 350℃ to 400℃ with La_(0.8)K_(0.2)FeO_3 catalyst,and reaches its highest level of 27.5%at367℃.The by-product nitrous oxide(N_2O) emission was also reduced under the treatment of catalysts.
出处
《工程热物理学报》
EI
CAS
CSCD
北大核心
2014年第8期1656-1659,共4页
Journal of Engineering Thermophysics
基金
国家自然科学基金(No.51206068)
教育部博士点基金(No.20113227120016)
江苏高校优势学科建设工程项目(PAPD)
