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allied
academies
February 18-19, 2019 | Paris, France
Joint Event
Green Chemistry and Technology
8
th
World Congress on
International Conference on
Organic and Inorganic Chemistry
Journal of Industrial and Environmental Chemistry| Volume: 3
AuPd/3DOM CeO
2
catalysts with good chlorine-resistant performance and catalytic stability in
trichloroethylene combustion
Zhang Xing
Beijing University of Technology, China
C
hlorinated volatile organic compounds (CVOCs) are harmful
to the atmosphere and human health. Catalytic oxidation
is a good promising method for the removal of CVOCs and
the development of high-performance catalysts is the key
issue. In this work, the high-efficiency three dimensionally
ordered macro-porous (3DOM) CeO
2
-supported AuPd alloys
(xAuPdy/3DOM CeO
2
; x = 0.46‒2.85 wt.%, y = 1.85‒1.89)
catalysts were prepared using the polymethyl methacrylate
templating and polyvinyl alcohol protected reduction methods.
Physicochemical properties of the samples were characterized
by means of various techniques, and their catalytic activities
for trichloroethylene (TCE) combustion (reaction condition:
750 ppm TCE + 20 vol% O
2
+ N
2
(balance) and space velocity
was 20,000 mL/(g h)) were evaluated. It is found that the
catalysts possessed a good-quality 3DOM structure and
the noble metal nanoparticles (NPs) with a size of 3‒4 nm
were uniformly dispersed on the surface of 3DOM CeO
2
.
The 2.85AuPd1.87/3DOM CeO
2
sample showed the highest
catalytic activity with a T90% (the temperature required for
achieving a conversion of 90%) of 415
o
C and this sample also
possessed excellent catalytic stability and moisture-resistant
ability. Based on the characterization results and activity
data, we conclude that the excellent catalytic performance
of 2.85AuPd1.87/3DOM CeO
2
was associated with its high
adsorbed oxygen species concentration, good low-temperature
reducibility, and strong interaction between AuPd nanoparticles
and 3DOM CeO
2
.
e:
hxdai@bjut.edu.cnJ Ind Environ Chem 2019, Volume 3
DOI: 10.4066/2591-7331-C1-009