负载型Pt-Fe/Al2O3催化剂用于室温催化氧化甲醛

doi:10.16085/j.issn.1000-6613.2018-0610

化工进展 ›› 2019, Vol. 38 ›› Issue (03): 1427-1433.DOI: 10.16085/j.issn.1000-6613.2018-0610

负载型Pt-Fe/Al₂O₃催化剂用于室温催化氧化甲醛

崔维怡¹(),王圣公²,王琳琳²,戴俊琦²,谭乃迪²()

1. 吉林化工学院化工清洁生产技术吉林省高校重点实验室，吉林吉林 132022
2. 吉林化工学院化学与制药工程学院，吉林吉林 132022

收稿日期:2018-03-26 修回日期:2018-06-26 出版日期:2019-03-05 发布日期:2019-03-05
通讯作者: 谭乃迪
作者简介:崔维怡（1977—），女，博士，副教授，主要从事环境多相催化材料制备及催化反应研究。E-mail:cuiweiyi0119@163.com。|谭乃迪，博士，教授，硕士研究生导师。E- mail:tannaidi@ hotmail.com。
基金资助:
吉林市科技创新发展计划(201750211);吉林省教育厅‘十三五’科学技术研究规划项目(JJKA20180559KJ)

Pt-Fe/ Al₂O₃ catalysts for removal of formaldehyde at ambient temperature

Weiyi CUI¹(),Shenggong WANG²,Linlin WANG²,Junqi DAI²,Naidi TAN²()

1. The Key Laboratory of Chemical Cleaner Production Technology of Jilin Province，Jilin Institute of Chemical Technology，Jilin 132022，Jilin，China
2. College of Chemical and Pharmaceutical Engineering，Jilin Institute of Chemical and Technology，Jilin 132022，Jilin，China

Received:2018-03-26 Revised:2018-06-26 Online:2019-03-05 Published:2019-03-05
Contact: Naidi TAN

摘要/Abstract

摘要：

采用胶体沉积法制备不同载体（Ni₂O₃、Co₃O₄、TiO₂、Al₂O₃）的Pt-Fe/MeO_x催化剂用于甲醛室温催化氧化。活性测试表明，以γ-Al₂O₃为载体的Pt-Fe/Al₂O₃催化剂具有较高的催化活性，在25℃时甲醛的转化率可达到100%，而且Pt-Fe/ Al₂O₃催化剂还表现出良好的稳定性。采用各种表征技术对Pt-Fe/Al₂O₃的形貌、价态及氧化还原性等物理化学性质进行了研究，结果表明：Pt-Fe/Al₂O₃催化剂中Pt物种和Fe物种在Al₂O₃载体的表面上均匀分散；二者之间存在着较强的相互作用，在Al₂O₃载体的表面上形成一些类似Pt-O-Fe活性物种，有效促进了Pt-Fe/Al₂O₃催化性能，从而显示出较高的氧化活性。

关键词: 甲醛, 催化, 氧化, 活性

Abstract:

Various supported platinum-iron catalysts Pt-Fe/MeO _x (MeO _x =Ni₂O₃, Co₃O₄, TiO₂, Al₂O₃) were prepared by colloid-deposition method, and their catalytic properties were investigated through oxidation of formaldehyde at ambient temperature. Activity result shows that the γ-Al₂O₃ supported Pt-Fe catalyst exhibits the highest activity and long-term stability, which had achieved complete oxidation of HCHO at 25℃. Characterizations were performed to investigate the physicochemical properties of the Pt-Fe/Al₂O₃ catalyst including its morphology, chemical states and redox ability. The results indicated that the adopted preparation process could lead to an uniform distribution of the Pt species and the Fe species on the surface of the γ-Al₂O₃ support. And the enhanced catalytic activity of the Pt-Fe/Al₂O₃ catalyst might be mainly attributed to the presence of the strong interactions between the Pt and the Fe species, which resulted in the formation of the Pt-O-Fe active sites.

Key words: formaldehyde, catalysis, oxidation, reactivity

中图分类号:

TQ426

崔维怡,王圣公,王琳琳,戴俊琦,谭乃迪. 负载型Pt-Fe/Al₂O₃催化剂用于室温催化氧化甲醛[J]. 化工进展, 2019, 38(03): 1427-1433.

Weiyi CUI,Shenggong WANG,Linlin WANG,Junqi DAI,Naidi TAN. Pt-Fe/ Al₂O₃ catalysts for removal of formaldehyde at ambient temperature[J]. Chemical Industry and Engineering Progress, 2019, 38(03): 1427-1433.

图/表 10

参考文献 38

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催化剂	Pt 质量分数/%		比表面积 /m²?g^-1	孔容 /m³?g^-1	孔直径 /nm
催化剂	理论	实际	比表面积 /m²?g^-1	孔容 /m³?g^-1	孔直径 /nm
γ-Al₂O₃			170	0.23	6.0
TiO₂			51	0.18	16.4
Co₃O₄			48	0.36	19.1
Ni₂O₃			37	0.26	16.9
Pt-Fe/Al₂O₃	2	1.48	103	0.17	6.6
Pt-Fe/TiO₂	2	1.51	40	0.13	17.2
Pt-Fe/Co₃O₄	2	1.42	43	0.23	18.9
Pt-Fe/Ni₂O₃	2	1.36	21	0.10	11.8

催化剂	Pt 质量分数/%		比表面积 /m²?g^-1	孔容 /m³?g^-1	孔直径 /nm
催化剂	理论	实际	比表面积 /m²?g^-1	孔容 /m³?g^-1	孔直径 /nm
γ-Al₂O₃			170	0.23	6.0
TiO₂			51	0.18	16.4
Co₃O₄			48	0.36	19.1
Ni₂O₃			37	0.26	16.9
Pt-Fe/Al₂O₃	2	1.48	103	0.17	6.6
Pt-Fe/TiO₂	2	1.51	40	0.13	17.2
Pt-Fe/Co₃O₄	2	1.42	43	0.23	18.9
Pt-Fe/Ni₂O₃	2	1.36	21	0.10	11.8

催化剂	负载量（质量分数）/%	甲醛浓度 /mg·m^–3	空速 /mL·h^?1·g^?1	甲醛转化效率^①/%	数据来源
Pt-Fe/Al₂O₃	2	375	60000	100	本工作
Pt/Fe₂O₃	1	375	60000	100	[14]
PtNi/ Al₂O₃	0.3	38	24000	100	[26]
Pt/TiO₂	1	375	50000	100	[11]
2%Na-Pt/TiO₂	1	750	120000	100	[12]
Pt/MnO _x -CeO₂	3	38	30000	100	[27]
Pt/MnO₂	2	575	20000	41	[16]
Pt/ZSM-5	0.4	65	30000	100	[28]
Pt/ZrO₂	1	125	60000	91	[29]

催化剂	负载量（质量分数）/%	甲醛浓度 /mg·m^–3	空速 /mL·h^?1·g^?1	甲醛转化效率^①/%	数据来源
Pt-Fe/Al₂O₃	2	375	60000	100	本工作
Pt/Fe₂O₃	1	375	60000	100	[14]
PtNi/ Al₂O₃	0.3	38	24000	100	[26]
Pt/TiO₂	1	375	50000	100	[11]
2%Na-Pt/TiO₂	1	750	120000	100	[12]
Pt/MnO _x -CeO₂	3	38	30000	100	[27]
Pt/MnO₂	2	575	20000	41	[16]
Pt/ZSM-5	0.4	65	30000	100	[28]
Pt/ZrO₂	1	125	60000	91	[29]

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负载型Pt-Fe/Al₂O₃催化剂用于室温催化氧化甲醛

Pt-Fe/ Al₂O₃ catalysts for removal of formaldehyde at ambient temperature

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