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

被引：2
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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