Catalytic activity of niobium oxide supported bimetallic nanocatalysts (IrxPt1-x/Nb2O5) for oxidation of formaldehyde at moderate temperature

被引：3
作者：
Ammar, Saad H. [1 ]
Salman, Mohammed D. [2 ]
Shafi, Ruaa Fadhil [1 ]
机构：
[1] Al Nahrain Univ, Chem Engn Dept, Baghdad, Iraq
[2] Univ ThiQar, Coll Engn, Thiqar 64001, Iraq
来源：
COLLOID AND INTERFACE SCIENCE COMMUNICATIONS | 2020年 / 38卷
关键词：
Formaldehyde oxidation; Ir-Pt bimetallic; Nb2O5; nanoparticles; Catalytic activity; DEACTIVATION; NB2O5;
D O I：
10.1016/j.colcom.2020.100305
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：
Niobium oxide (Nb2O5) nanoparticles supported bimetallic nanocatalysts (IrxPt1-x/Nb2O5) for low temperature formaldehyde oxidation were obtained. The as-synthesized IrxPt1-x/Nb2O5 nanocatalysts exhibited higher ac-tivities and stability than bare Nb2O5 for catalytic formaldehyde oxidation. The Ir:Pt ratio have considerable effects on the activity of the nanocatalyst, and the Ir0.5Pt0.5/Nb2O5 has the highest catalytic activity among all the Nb2O5 supported bimetallic nanocatalysts, and the temperature for 100% formaldehyde oxidation reached as low as 30 degrees C. The catalytic stability of Ir0.5Pt0.5/Nb2O5 nanocatalyst exhibited that after four reaction cycles and no catalyst deactivation was detected after 36 h operation.
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页数：9
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共 31 条
[1]   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
[2]   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
[3]   Enhancing formaldehyde oxidation on iridium catalysts using hydrogenated TiO2 supports [J].
Chan, Hang Cheong ;
Chen, Ting ;
Xie, Lifang ;
Shu, Yijin ;
Gao, Qingsheng .
NEW JOURNAL OF CHEMISTRY, 2018, 42 (22) :18381-18387
[4]   Complete oxidation of formaldehyde at ambient temperature over γ-Al2O3 supported Au catalyst [J].
Chen, Bing-bing ;
Zhu, Xiao-bing ;
Crocker, Mark ;
Wang, Yu ;
Shi, Chuan .
CATALYSIS COMMUNICATIONS, 2013, 42 :93-97
[5]   High-dispersed catalysts of core-shell structured Au@SiO2 for formaldehyde catalytic oxidation [J].
Chen, Dan ;
Shi, Jing ;
Shen, Huayao .
CHEMICAL ENGINEERING JOURNAL, 2020, 385
[6]   A Facile and Robust Method for Synthesis of Hierarchically Multibranched PtIrCo Alloyed Nanowires: Growth Mechanism and Efficient Electrocatalysis for Hydrogen Evolution Reaction [J].
Chen, Hong-Yan ;
Wang, Ai-Jun ;
Zhang, Lu ;
Feng, Jiu-Ju .
ACS APPLIED ENERGY MATERIALS, 2019, 2 (11) :7886-7892
[7]   Black nanostructured Nb2O5 with improved solar absorption and enhanced photoelectrochemical water splitting [J].
Cui, Houlei ;
Zhu, Guilian ;
Xie, Yian ;
Zhao, Wei ;
Yang, Chongyin ;
Lin, Tianquan ;
Gu, Hui ;
Huang, Fuqiang .
JOURNAL OF MATERIALS CHEMISTRY A, 2015, 3 (22) :11830-11837
[8]   Catalytic properties of γ-Al2O3 supported Pt-FeOx catalysts for complete oxidation of formaldehyde at ambient temperature [J].
Cui, Weiyi ;
Yuan, Xiaoling ;
Wu, Ping ;
Zheng, Bin ;
Zhang, Wenxiang ;
Jia, Mingjun .
RSC ADVANCES, 2015, 5 (126) :104330-104336
[9]   Carbon monoxide hydrogenation on Co-Rh/Nb2O5 catalysts [J].
Frydman, A ;
Castner, DG ;
Campbell, CT ;
Schmal, M .
JOURNAL OF CATALYSIS, 1999, 188 (01) :1-13
[10]   Nb2O5 nanosize powders prepared by sol-gel - Structure, morphology and dielectric properties [J].
Graca, M. P. F. ;
Meireles, A. ;
Nico, C. ;
Valente, M. A. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2013, 553 :177-182
1234