K-Ce改性类水滑石前驱体Co-M—Al复合氧化物催化分解N2O

采用共沉淀法制备不同组分类水滑石前驱体Co-M—Al和Co—M—Ce—Al（M=Zn，Ni，Cu）复合氧化物催化剂催化分解N2O．结果表明，Co—M—Al系列氧化物催化剂的催化活性Co—Ni-Al系列〉Co—Zn-Al系列〉Co—Cu-Al系列；CeO2添加使得催化剂催化活性进一步提高，N20分解温度T50和马0均下降80℃；继续负载碱金属K也使氧化物催化剂催化活性提高，N2O分解温度T50和T90下降约50℃....

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Bibliographic Details
Published in化学物理学报 no. 2; pp. 233 - 239
Main Author 张锦丽 吴双 胡辉 吴高明 曾召伟
Format Journal Article
LanguageChinese
Published 2014
Subjects
CeO2
N2O
催化分解
碱金属
类水滑石
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ISSN1674-0068
2327-2244

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Summary:采用共沉淀法制备不同组分类水滑石前驱体Co-M—Al和Co—M—Ce—Al（M=Zn，Ni，Cu）复合氧化物催化剂催化分解N2O．结果表明，Co—M—Al系列氧化物催化剂的催化活性Co—Ni-Al系列〉Co—Zn-Al系列〉Co—Cu-Al系列；CeO2添加使得催化剂催化活性进一步提高，N20分解温度T50和马0均下降80℃；继续负载碱金属K也使氧化物催化剂催化活性提高，N2O分解温度T50和T90下降约50℃.
Bibliography:34-1295/O6
N2O, Catalytic decomposition, Hydrotalcite-like compound, CeO2, Alkalimetal
A series of mixed oxide catalysts with different composition of Co-M-Al and Co-M-Ce- Al （M=Zn, Ni, Cu） were prepared by co-precipitation method from hydrotalcite-like compounds. The experimental results revealed the catalytic activity of Co-Ni-Al is slightly higher than that of Co-Zn-Al and much higher than that of Co-Cu-Al for direct decomposition of N2O. Moreover, addition of small amounts of Ce02 improved the catalytic activity signif- icantly and made the decomposition temperatures at which the N2O conversion was 50% and 90% （T50 and Tgo） both decreased 80 ℃ than those of Co-M-Al catalysts without CeO2 added. Further, potassium-load also promoted the catalytic activity, and the decomposi- tion temperatures of T50 and T90 both decreased approximately 50 ℃. It is significant for decomposing N2O from industries and reducing carbon emission from atmosphere.
Jin-li Zhang, Shuang Wu, Hui Hua, Gao-ming Wu, Zhao-wei Zeng（a. School
ISSN:1674-0068
2327-2244