Oxygen Isotope (18O2) Evidence on the Role of Oxygen in the Plasma-Driven Catalysis of VOC Oxidation

被引:35
作者
Kim, Hyun-Ha [1 ]
Ogata, Atsushi [1 ]
Schiorlin, Milko [2 ]
Marotta, Ester [2 ]
Paradisi, Christina [2 ]
机构
[1] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058569, Japan
[2] Univ Padua, Dept Chem Sci, Padua, Italy
关键词
Plasma-driven catalysis; Heterogeneous catalyst; Isotope oxygen; VOC oxidation; TEMPERATURE-PROGRAMMED DESORPTION; VOLATILE ORGANIC-COMPOUNDS; ELECTRON-BEAM IRRADIATION; NONTHERMAL PLASMA; SUPPORTED SILVER; EXCHANGE-REACTION; RATE COEFFICIENTS; FLUE-GAS; DECOMPOSITION; ADSORPTION;
D O I
10.1007/s10562-010-0491-0
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
This paper reports isotopic evidence on non-thermal plasma-induced fixation of gas-phase oxygen on the surface of several catalysts such as TiO2, Ag/TiO2, Ag/gamma-Al2O3 and Ag/MS-13X at atmospheric-pressure. On-line mass spectrometric analysis and stoichiometric comparison of reactants and products revealed that the fixed surface oxygen can be activated by nonthermal plasma. The fixed O-18 by nonthermal plasma survived for a certain period of time (about 30 min), and involved in the formation of isotope-exchanged oxygen ((OO)-O-18-O-16) and isotope containing COx (CO and CO2).
引用
收藏
页码:277 / 282
页数:6
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