Mild Preoxidation Treatment of Pt/TiO2 Catalyst and Its Enhanced Low Temperature Formaldehyde Decomposition

被引：19
作者：
Shi, Kangzhong [1 ,2 ]
Wang, Lei [1 ,3 ]
Li, Long [1 ]
Zhao, Xuejuan [4 ]
Chen, Yuanyuan [1 ]
Hua, Zelin [1 ]
Li, Xiaobao [1 ]
Gu, Xiaoli [1 ]
Li, Licheng [1 ,5 ]
机构：
[1] Nanjing Forestry Univ, Coll Chem Engn, Innovat Res Ctr Lignocellulos Funct Mat, Nanjing 210037, Jiangsu, Peoples R China
[2] Eastman Shuangwei Fibers Co Ltd, Hefei 230601, Anhui, Peoples R China
[3] Wison China Holding Co, Res Inst Wison Adv, Shanghai 201210, Peoples R China
[4] Nanjing Inst Technol, Sch Mat Sci & Engn, Nanjing 211167, Jiangsu, Peoples R China
[5] Nanjing Tech Univ, State Key Lab Mat Oriented Chem Engn, Nanjing 210009, Jiangsu, Peoples R China
来源：
CATALYSTS | 2019年 / 9卷 / 08期
基金：
中国国家自然科学基金;
关键词：
formaldehyde; platinum; mild peroxidation; TiO2; catalytic decomposition; PLATINUM NANOPARTICLES; OXIDATION; CO; PERFORMANCE; SURFACE; TIO2; REDUCTION; STABILITY; COMPOSITE; SUPPORT;
D O I：
10.3390/catal9080694
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The typical platinum nanoparticles loaded on titania (Pt/TiO2) were pretreated with mild oxidation (<300 degrees C) in pure oxygen to enhance the low-temperature formaldehyde (HCHO) decomposition performance. The structural properties of support and platinum nanoparticles were characterized by X-ray diffraction (XRD), physical adsorption/desorption, high-resolution transmission electron microscopy (HRTEM), in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFITS), and temperature-programmed reduction and oxidation (TPR and TPO). The catalytic results showed that the low temperature HCHO decomposition activity of mild pre-oxidized Pt/TiO2 was around three times that of the pristine one. According to the characterization results, the structure of the Pt/TiO2 support and their Pt particle sizes had negligible change after pre-oxidation treatment. The cationic Pt content of Pt/TiO2 and surface roughness of Pt nanoparticles gradually increased with the increasing temperature of the pre-oxidation treatment. Mild pre-oxidation treatment was beneficial to the oxygen activation and water dissociation of Pt/TiO2. In situ HCHO-DFIRTS results showed that the mild pre-oxidation treatment could enhance the dehydrogenation of formate.
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页数：15
相关论文
共 47 条
[1]   Critical Review of Low-Temperature CO Oxidation and Hysteresis Phenomenon on Heterogeneous Catalysts [J].
Al Soubaihi, Rola Mohammad ;
Saoud, Khaled Mohammad ;
Dutta, Joydeep .
CATALYSTS, 2018, 8 (12)
[2]   On highly active partially oxidized platinum in carbon monoxide oxidation over supported platinum catalysts [J].
Alayon, E. M. C. ;
Singh, J. ;
Nachtegaal, M. ;
Harfouche, M. ;
van Bokhoven, J. A. .
JOURNAL OF CATALYSIS, 2009, 263 (02) :228-238
[3]   Catalytic oxidation of formaldehyde over different silica supported platinum catalysts [J].
An, Nihong ;
Zhang, Wenlong ;
Yuan, Xiaoling ;
Pan, Bo ;
Liu, Gang ;
Jia, Mingjun ;
Yan, Wenfu ;
Zhang, Wenxiang .
CHEMICAL ENGINEERING JOURNAL, 2013, 215 :1-6
[4]   Complete oxidation of formaldehyde at ambient temperature over supported Pt/Fe2O3 catalysts prepared by colloid-deposition method [J].
An, Nihong ;
Yu, Qiushi ;
Liu, Gang ;
Li, Suying ;
Jia, Mingjun ;
Zhang, Wenxiang .
JOURNAL OF HAZARDOUS MATERIALS, 2011, 186 (2-3) :1392-1397
[5]   Progress in research on catalysts for catalytic oxidation of formaldehyde [J].
Bai, Bingyang ;
Qiao, Qi ;
Li, Junhua ;
Hao, Jiming .
CHINESE JOURNAL OF CATALYSIS, 2016, 37 (01) :102-122
[6]   Fish and food safety: Determination of formaldehyde in 12 fish species by SPME extraction and GC-MS analysis [J].
Bianchi, F. ;
Careri, M. ;
Musci, M. ;
Mangia, A. .
FOOD CHEMISTRY, 2007, 100 (03) :1049-1053
[7]   Reaction and surface characterization studies of titania-supported Co, Pt and Co/Pt catalysts for the selective oxidation of CO in H2-containing streams [J].
Epling, WS ;
Cheekatamarla, PK ;
Lane, AM .
CHEMICAL ENGINEERING JOURNAL, 2003, 93 (01) :61-68
[8]   Review on noble metal-based catalysts for formaldehyde oxidation at room temperature [J].
Guo, Jiahong ;
Lin, Chuxia ;
Jiang, Chuanjia ;
Zhang, Pengyi .
APPLIED SURFACE SCIENCE, 2019, 475 :237-255
[9]   AN INFRARED STUDY OF THE ADSORPTION OF CO ON A STEPPED PLATINUM SURFACE [J].
HAYDEN, BE ;
KRETZSCHMAR, K ;
BRADSHAW, AM ;
GREENLER, RG .
SURFACE SCIENCE, 1985, 149 (2-3) :394-406
[10]   Highly dispersed and active supported Pt nanoparticles for gaseous formaldehyde oxidation: Influence of particle size [J].
Huang, Haibao ;
Hu, Peng ;
Huang, Huiling ;
Chen, Jiandong ;
Ye, Xinguo ;
Leung, Dennis Y. C. .
CHEMICAL ENGINEERING JOURNAL, 2014, 252 :320-326
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