A_2BO_4型催化活性材料结构与性能的研究──ⅡLa_2Li_xCu_（1－x

Studies on the Structure and Properties of A_2BO_4Type Materials in Catalysis ─━Ⅱ Catalytic Peroperties of La_2Li_xCu_(1-x)O_4 System

Ａ２ＢＯ４型复合氧化物具有非完整结构，Ａ，Ｂ及Ｏ位均有空位，本文以硝酸盐为原料，用柠檬酸络合法使Ｂ位中掺入了Ｌｉ离子，制得的活性组分Ｌａ２ＬｉｘＣｕ１－ｘＯ４（ｘ≤０．１）在６５０℃活化２小时，对于ＣＯ氧化反应和ＮＯｘ还原反应同时有较高的他化活性，ＣＯ和ＮＯｘ的转化率分别高于９０％和８０％．

The compounds of A2BO4type complex Oxite have imperfect structures,there are vacancies at all of A. B and O sites, In this paper, with the nitrates as rawmeterial, Li is doped in B sites by the method of 'Citric acid comples'. The prepared active components of La2LixCu1-xO4 (x≤0.1) is actived at 650℃ for 2h, a catalyst withhigh activity for CO oxidation and NOxreduction rections simultaneously thus isobtained, the conversion (%) of Co and NOx are more then 90% and 80% respectively.