摘要
用共沉淀法制得ＭｇＡｌ 水滑石和二氧化铈的混合物，经７５０ ℃热活化，得到铈镁铝混合氧化物催化剂． 考察了催化剂的组成、反应温度、反应体系中氧含量、水蒸气及二氧化硫的存在对ＮＯ 和ＣＯ 反应活性的影响． 结果表明，铈镁铝混合氧化物催化剂具有较高的脱ＮＯｘ 活性，并具有优异的水热稳定性和一定的抗氧性及抗二氧化硫毒化的能力．
The mixture of Mg Al hydrotalcite and ceria was prepared by coprecipitation, and the Ce containing catalyst was obtained after heat activation. The effects of composition of the catalyst, reaction temperature, O 2, H 2O and SO 2 on the NO+CO reaction were examined. The results showed that, for NO+CO reaction, Ce containing mixed oxides have high activity and excellent hydrothermal stability and can maintain the activity to some extent in the presence of O 2, H 2O and SO 2.
出处
《催化学报》
SCIE
CAS
CSCD
北大核心
2000年第1期31-34,共4页
关键词
氮氧化物
铈
镁
铝
三金属催化剂
大气污染
ceria, magnesia, alumina, mixed oxide, nitrogen oxide, removal, sulfur dioxide poisoning
