title: Heterogeneous reaction of NO2 on the surface of montmorillonite particles.
abstract: The studies on heterogeneous reactions over montmorillonite, which is a typical 2:1 layered aluminosilicate, will benefit to the understanding of heterogeneous reactions on clay minerals. Montmorillonite can be classified as sodium montmorillonite or calcium montmorillonite depending on the cation presented between the different layers. Using diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS), the heterogeneous reaction mechanism of NO2 on the surface of montmorillonite was firstly investigated. Results showed that the reaction of NO2 on the surface of sodium and calcium montmorillonite fit a first-order kinetics, and the reaction duration of calcium montmorillonite was longer than that of sodium montmorillonite under the dry condition. For either sodium or calcium montmorillonite, the uptake coefficient decreased as humidify increased.
authors.affiliation: College of Environmental Sciences and Engineering, Peking University, Beijing 100871, China. zhangzf01@vip.163.com
authors.forename: Zefeng
authors.initials: Z
authors.lastname: Zhang
authors.forename: Jing
authors.initials: J
authors.lastname: Shang
authors.forename: Tong
authors.initials: T
authors.lastname: Zhu
authors.forename: Hongjun
authors.initials: H
authors.lastname: Li
authors.forename: Defeng
authors.initials: D
authors.lastname: Zhao
authors.forename: Yingju
authors.initials: Y
authors.lastname: Liu
authors.forename: Chunxiang
authors.initials: C
authors.lastname: Ye
mesh_terms: D001546:Bentonite / Q000737:chemistry*; D006813:Humidity; D009585:Nitrogen Dioxide / Q000737:chemistry*; D013997:Time Factors; D014865:Waste Disposal, Fluid / Q000379:methods
chemical_list: D001546:Bentonite; D009585:Nitrogen Dioxide