Co对NiO-BaCO3催化剂催化N2O分解的促进影响

催化学报 , 2015, (3): 344-347. doi: 10.1016/S1872-2067(14)60250-3

Co对NiO-BaCO3催化剂催化N2O分解的促进影响

张峰峰 ^1, , 王新平 ^2, , 张肖肖 ^3, , 马木提江·吐尔逊 ^4, , 于海彪 ^5,

1.大连理工大学环境科学与技术学院工业生态环境工程重点实验室和精细化工重点实验室,辽宁大连,116024

2.大连理工大学环境科学与技术学院工业生态环境工程重点实验室和精细化工重点实验室,辽宁大连,116024

3.大连理工大学环境科学与技术学院工业生态环境工程重点实验室和精细化工重点实验室,辽宁大连,116024

4.大连理工大学环境科学与技术学院工业生态环境工程重点实验室和精细化工重点实验室,辽宁大连,116024

5.大连理工大学环境科学与技术学院工业生态环境工程重点实验室和精细化工重点实验室,辽宁大连,116024

基金项目: 国家自然科学基金(21177016,21277019).This work was supported by the National Natural Science Foundation of China (21177016,21277019)

关键词：四氧化三钴 , 氧化二氮分解 , 碳酸钡 , 氧化镍

Promotion by Co of a NiO-BaCO3 catalyst for N2O decomposition

Keywords： Cobalt oxide , Nitrous oxide decomposition , Barium carbonate , Nickel oxide

采用共沉淀法制备了一系列CoxBa1.5Ni9催化剂，用于N2O催化分解反应.研究发现，尽管Co加入纯NiO对反应不利，但在有BaCO3存在的情况下， Co则能够显著提高NiO的活性.这是由于Co增强了Ni–O键而对反应不利，但在BaCO3存在下则大大增加了Ni基催化剂的比表面积及活性位数目.

A series of CoxBa1.5Ni9 catalysts prepared by a co‐precipitation method were investigated for N2O decomposition. Co improved the activity of NiO when BaCO3 was present but had the opposite role when it was absent. This was because Co strengthened the Ni-O bond and decreased the surface area when added into pure NiO without BaCO3, while in the presence of BaCO3, it dramatically in‐creased the surface area and amount of active sites of NiO.

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