Toluene removal by sequential adsorption-plasma catalytic process: Effects of Ag and Mn impregnation sequence on Ag-Mn/γ-Al2O3.
作者： Caihong Qin , Xuemin Huang , Xiaoqing Dang , Jiayu Huang , Jingjing Teng
DOI: 10.1016/J.CHEMOSPHERE.2016.07.085
关键词: Toluene 、 Adsorption 、 Inorganic chemistry 、 Carbon 、 Manganese 、 Selectivity 、 BET theory 、 Catalysis 、 X-ray photoelectron spectroscopy 、 Chemistry
摘要: Abstract A series of Ag-Mn/γ-Al 2 O 3 were prepared under different Ag/Mn impregnation sequence and tested in the sequential adsorption-plasma catalytic removal toluene. When Mn was impregnated first, resulting catalyst, Ag-Mn(F)/γ-Al , had longer breakthrough time, gave less emission toluene, higher CO selectivity, better carbon balance x yield compared to catalysts via other sequences. After 120 min NTP treatment, 91%, with 87% as contributions. Brunauer–Emmett–Teller (BET) analysis X-ray photoelectron spectroscopy (XPS) results show that, impacts BET surface area ratio existing state Ag on catalysts. The time when using catalyst is attributed large amount + surface. a new active site for toluene adsorption. first (Ag(F)-Mn/γ-Al ) or co-impregnated (Ag-Mn-C/γ-Al ), predominant specie . Both 0 species detected cooperation MnO may promote migration oxygen. This would facilitate oxidation adsorbed C bond already weakened by result selectivity seen system.
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