高活性N_2O分解催化剂BaCo_6Al_(2.3)研究  

An investigation on highly active BaCo_6Al_(2.3) catalyst for N_2O decomposition

作　　者：吴星星[1] 马木提江.吐尔逊 孙兴涛[1] 王新平[1] 

机构地区：[1]大连理工大学精细化工国家重点实验室,辽宁大连116024 [2]喀什大学化学与环境科学学院,新疆喀什844006

出　　处：《大连理工大学学报》2016年第5期447-453,共7页Journal of Dalian University of Technology

基　　金："八六三"国家高技术研究发展计划资助项目(2013AA030705);国家自然科学基金资助项目(21177016;21277019)

摘　　要：用共沉淀法制备了BaCO3修饰的NiO和Co3O4,用于N2O分解反应的催化剂.研究发现,有最佳组成的BaCo6催化剂比BaxNi6（x=0-2）催化剂活性更高.对于BaCo6催化剂,加入了适量作为黏结剂的勃姆石以增加催化剂的力学强度.所得BaCo6Al2.3催化剂,既有很好的力学强度又有较高的催化活性.在450℃,该BaCo6Al2.3催化剂在含0.2%N2O、5%O2、2%H2O、0.01%NO的Ar气氛中,表现出非常稳定的催化活性.NiO,Co3O4 doped by BaCO3 are prepared by coprecipitation to be used as catalysts for N2 O decomposition.It is found that the BaCo6 catalyst with the optimum composition is much more active than the series of BaxNi6（x=0-2）catalysts.For the BaCo6 catalyst,to increase its mechanical strength,boehmite as binder is added in appropriate amount,which leads to the BaCo6Al2.3catalyst with both better mechanical strength and desired activity for application.At 450 ℃,the BaCo6Al2.3catalyst exhibits a stable catalytic activity with time on stream for the feed gas 0.2% N2 O,5% O2,2% H2 O,0.01% NO in Ar.

关 键 词：N2O分解 催化稳定性 力学强度 杂质气体 

分 类 号：TQ032.41[化学工程]