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Heterogeneous Uptake of Hydrogen Peroxide on Mineral Oxides
Wei-gang Wang,Mao-fa Ge*,Qiao Sun
Author NameAffiliationE-mail
Wei-gang Wang Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China  
Mao-fa Ge* Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China gemaofa@iccas.ac.cn 
Qiao Sun Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China  
Abstract:
The interaction of mineral oxides (α-Al2O3, MgO, Fe2O3, and SiO2) with hydrogen peroxide was investigated using the Knudsen cell reactor. The initial reactive uptake coefficients for the commercially available powders are measured as (1.00±0.11)×10-4 for α-Al2O3, (1.66±0.23)×10-4 for MgO, (9.70±1.95)×10-5 for Fe2O3, and (5.22±0.9)×10-5 for SiO2. These metal oxide powders exhibit some catalytic behavior toward the decomposition of hydrogen peroxide excluding SiO2. H2O2 can be destroyed on Fe2O3 surface and O2 is formed. The experimental results suggest that the heterogeneous loss on mineral surface can represent an important sink of hydrogen peroxide.
Key words:  Kinetics, Hydrogen peroxide, Heterogeneous uptake, Atmospheric lifetime
FundProject:
矿质氧化物表面过氧化氢的非均相过程研究
王炜罡,葛茂发*,孙巧
摘要:
利用努森池反应器研究了过氧化氢与大气矿质氧化物的非均相过程,其初始摄取系数分别为(1.00±0.11)×10-4 (σ-Al2O3)、(1.66±0.23)×10-4 (MgO)、(5.22±0.9)×10-5 (SiO2)、(9.70±1.95)×1010-5 (Fe2O3). 除SiO2
关键词:  动力学,非均相过程,光氧化氢,大气寿命
DOI:10.1088/1674-0068/24/05/515-520
分类号: