B位离子对Ce0.8Mg0.2BO3催化甲烷燃烧性能的影响

摘要以NH₄HCO₃为沉淀剂，采用共沉淀法制备Ce_0.8Mg_0.2BO₃（B=Cr，Mn，Fe，Co，Ni，Cu）系列催化剂，用XRD、BET、H₂-TPR、TG-DSC、FT-IR和SEM等手段对其进行物理性能表征，并对其进行催化甲烷燃烧性能测试，考察不同B位离子对钙钛矿催化剂性能的影响。结果表明：以共沉淀法制备不同B位离子的Ce_0.8Mg_0.2BO₃（B=Cr，Mn，Fe，Co，Ni，Cu）系列催化剂，经过800℃高温焙烧后，可形成完整的钙钛矿晶型。其中Ce_0.8Mg_0.2NiO₃催化甲烷燃烧活性最好，起燃温度T_l0%为410℃，完全转化温度T_90%为547℃。

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	徐壮
	解亚琼
	金丽瑛
	郑建东

关键词：共沉淀；钙钛矿；甲烷催化燃烧

Abstract： The Ce_0.8Mg_0.2BO₃(B=Cr, Mn, Fe, Co, Ni, Cu)series catalysts were prepared by co-precipitation method using NH₄HCO₃ as precipitant. The structures were characterized by XRD, BET, H₂-TPR, TG-DSC, FT-IR and SEM, and its performance catalytic on methane combustion was tested. The results show that the preparation of Ce_0.8Mg_0.2BO₃ (B=Cr, Mn, Fe, Co, Ni, Cu) catalysts with different ions by co-precipitation method can form a complete perovskite after calcination at 800℃. The catalyst Ce_0.8Mg_0.2NiO₃ shows an excellent activity for methane combustion (the conversion of 10% and 90% are obtained at 410℃ and 547℃, respectively).

Keywords： co-precipitation method； perovskite； catalytic combustion of methane

Received 2018-05-22;

Fund:安徽省教育厅自然科学研究重点项目（KJ2017A412）；安徽省教育厅质量工程项目（2015sjjd024；2017jyxm0486；2017sxzx33）；大学生创新项目（2018CXXL057）。

Corresponding Authors: 郑建东,E-mail:zjd071@126.com。 Email: zjd071@126.com

About author: 徐壮(1995-),男,学士,现从事工业催化研究。

引用本文:

徐壮, 解亚琼, 金丽瑛, 郑建东.B位离子对Ce_0.8Mg_0.2BO₃催化甲烷燃烧性能的影响[J]. 化学工业与工程, 2019,36(2): 15-20

Xu Zhuang, Xie Yaqiong, Jin Liying, Zheng Jiandong.Effect of B Elements on the Catalytic Combustion of Methane for Ce_0.8Mg_0.2BO₃[J]. Chemcial Industry and Engineering, 2019,36(2): 15-20

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