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Low temperature removal of toluene over Ag/CeO 2 /Al 2 O 3 nanocatalyst in an atmospheric plasma catalytic system
Author(s) -
Zhu Bin,
Yan Yan,
Li Meng,
Li XiaoSong,
Liu JingLin,
Zhu YiMin
Publication year - 2018
Publication title -
plasma processes and polymers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.644
H-Index - 74
eISSN - 1612-8869
pISSN - 1612-8850
DOI - 10.1002/ppap.201700215
Subject(s) - toluene , catalysis , selectivity , ozone , nonthermal plasma , nitrogen , chemistry , oxygen , plasma , inorganic chemistry , chemical engineering , materials science , organic chemistry , physics , quantum mechanics , engineering
The efficient removal of toluene by plasma catalytic system (PCS) requires catalysts that can generate strong synergetic effect with discharge to oxidize toluene while promoting CO 2 selectivity and suppressing the formation of harmful byproducts. We report that application of an Ag/CeO 2 /Al 2 O 3 catalyst into PCS enables high conversion of toluene to CO 2 and H 2 O with the low concentration of ozone and nitrogen oxides. The Ag nanoparticles dispersed on CeO 2 surface transforms the filamentary discharge to a relatively uniform discharge with high‐efficiency, facilitates surface oxygen activation and organic intermediates oxidation, thus, enhances toluene removal efficiency. At 1800 J L −1 , toluene conversion and CO 2 selectivity reached maximum at 93% and 71%, respectively, whereas the removal process exhibited a good stability during a 5‐h test.
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