MnO2 Promoted TiO2 Nanotube Array Supported Pt Catalyst for Formaldehyde Oxidation with Enhanced Efficiency

被引：96
作者：
Chen, Huayao [1 ,2 ]
Tang, Minni [1 ,2 ,3 ]
Rui, Zebao [1 ,2 ,3 ]
Ji, Hongbing [1 ,2 ,3 ]
机构：
[1] Sun Yat Sen Univ, Dept Chem Engn, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China
[2] Sun Yat Sen Univ, Key Lab Low Carbon Chem & Energy Conservat Guangd, Guangzhou 510275, Guangdong, Peoples R China
[3] Sun Yat Sen Univ, Huizhou Res Inst, R&D Ctr Waste Gas Cleaning & Control, Huizhou 516081, Peoples R China
来源：
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH | 2015年 / 54卷 / 36期
关键词：
HCHO OXIDATION; METAL-CATALYSTS; PT/TIO2; REMOVAL; PT/GAMMA-AL2O3; DECOMPOSITION; TEMPERATURE; PERFORMANCE; COMBUSTION; ACTIVATION;
D O I：
10.1021/acs.iecr.5b01970
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
Highly ordered pore-through TiO2 nanotube arrays (TINT) prepared by an electrochemical anodization method were modified with MnO2 and used as the support for a Pt/MnO2/TiNT catalyst. The monolith-like Pt/MnO2/TiNT was then applied to low-concentration HCHO oxidation with enhanced efficiency. The effect of the MnO2 promotion on its performance for HCHO oxidation was studied with respect to the behavior of adsorbed species on the catalyst surface using in situ diffuse reflectance Fourier transform spectroscopy. In comparison with Pt/TiNT, Pt/MnO2/TiNT shows higher activity under parallel preparation and test conditions. A HCHO conversion of 95% with a more than 100 h stable performance is achieved over Pt/MnO2/TiNT at 30 degrees C with a low 0.20 wt % Pt loading amount. The superior performance is related to the specific monolith-like structure and its confinement effect, metal-support interaction, and superior HCHO adsorption and storage properties of Pt/MnO2/TiNT.
引用
收藏
页码：8900 / 8907
页数：8
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