TY - JOUR
T1 - Excellent catalytic performance, thermal stability, and water resistance of 3DOM Mn2O3-supported Au-Pd alloy nanoparticles for the complete oxidation of toluene
AU - Xie, Shaohua
AU - Deng, Jiguang
AU - Liu, Yuxi
AU - Zhang, Zhenhua
AU - Yang, Huanggen
AU - Jiang, Yang
AU - Arandiyan, Hamidreza
AU - Dai, Hongxing
AU - AU, Chak Tong
N1 - Funding Information:
This work was supported by the NSF of China ( 21377008 ), National High Technology Research and Development Program (“863” Program) of China ( 2015AA034603 ), oundation on the Creative Research Team Construction Promotion Project of Beijing Municipal Institutions , and Scientific Research Base Construction—Science and Technology Creation Platform—National Materials Research Base Construction .
PY - 2015/10/25
Y1 - 2015/10/25
N2 - Three-dimensionally ordered macroporous (3DOM) Mn2O3-supported AuPdy alloy (xAuPdy/3DOM Mn2O3; x = 1.0-3.8 wt%; Pd/Au molar ratio: y = 1.85, 1.92) catalysts were prepared using the polymethyl methacrylate-templating and polyvinyl alcohol-protected reduction methods, respectively. Physicochemical properties of the samples were characterized by means of numerous techniques, and their catalytic activities were evaluated for toluene oxidation. It is found that the AuPdy alloy nanoparticles (NPs) with an particle size of 2-4 nm were uniformly dispersed on the surface of 3DOM Mn2O3, and the 3.8AuPd1.92/3DOM Mn2O3 sample performed the best: the temperature at 90% toluene conversion was 162 °C at 40,000 mL/(g h). Furthermore, the 3.8AuPd1.92/3DOM Mn2O3 sample was highly active even after calcination at 700 °C. The introduction of water vapor to the feedstock induced a positive effect on toluene oxidation over 3.8AuPd1.92/3DOM Mn2O3, but a negative effect over 1.9Au/3DOM Mn2O3 or 1.9Pd/3DOM Mn2O3. The excellent catalytic activity, thermal stability, and water resistance of 3.8AuPd1.92/3DOM Mn2O3 were associated with its good activation adsorption of oxygen on AuPd1.92 NPs and strong interaction between noble metal NPs and 3DOM Mn2O3. The 3DOM Mn2O3-supported AuPdy alloy NPs are promising industrial catalysts for efficient removal of volatile organic compounds.
AB - Three-dimensionally ordered macroporous (3DOM) Mn2O3-supported AuPdy alloy (xAuPdy/3DOM Mn2O3; x = 1.0-3.8 wt%; Pd/Au molar ratio: y = 1.85, 1.92) catalysts were prepared using the polymethyl methacrylate-templating and polyvinyl alcohol-protected reduction methods, respectively. Physicochemical properties of the samples were characterized by means of numerous techniques, and their catalytic activities were evaluated for toluene oxidation. It is found that the AuPdy alloy nanoparticles (NPs) with an particle size of 2-4 nm were uniformly dispersed on the surface of 3DOM Mn2O3, and the 3.8AuPd1.92/3DOM Mn2O3 sample performed the best: the temperature at 90% toluene conversion was 162 °C at 40,000 mL/(g h). Furthermore, the 3.8AuPd1.92/3DOM Mn2O3 sample was highly active even after calcination at 700 °C. The introduction of water vapor to the feedstock induced a positive effect on toluene oxidation over 3.8AuPd1.92/3DOM Mn2O3, but a negative effect over 1.9Au/3DOM Mn2O3 or 1.9Pd/3DOM Mn2O3. The excellent catalytic activity, thermal stability, and water resistance of 3.8AuPd1.92/3DOM Mn2O3 were associated with its good activation adsorption of oxygen on AuPd1.92 NPs and strong interaction between noble metal NPs and 3DOM Mn2O3. The 3DOM Mn2O3-supported AuPdy alloy NPs are promising industrial catalysts for efficient removal of volatile organic compounds.
KW - Au-Pd alloy nanoparticle
KW - Thermal stability
KW - Three-dimensionally ordered macroporous manganese oxide
KW - Toluene oxidation
KW - Water resistance
UR - http://www.scopus.com/inward/record.url?scp=84943258892&partnerID=8YFLogxK
U2 - 10.1016/j.apcata.2015.09.026
DO - 10.1016/j.apcata.2015.09.026
M3 - Journal article
AN - SCOPUS:84943258892
SN - 0926-860X
VL - 507
SP - 82
EP - 90
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
ER -