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heterogeneous uptake and oxidation of so2 on iron oxides

  • Enhanced heterogeneous uptake of sulfur dioxide on …

    2020-7-31 · Abstract. Iron-containing mineral aerosols play a key role in the oxidation of sulfur species in the atmosphere. Sim-ulated cloud processing (CP) of typical mineral particles, such as illite (IMt-2), nontronite (NAu-2), smectite (SWy-2) and Arizona Test Dust (ATD) is shown here to modify sulfur dioxide (SO2) uptake onto mineral surfaces. Hetero-

  • (Xu Haomiao)

    2021-12-17 · Enhancement of Heterogeneous oxidation and Adsorption of Hg0 in a wide temperature window using SnO2 supported LaMnO3 perovskite oxide. Chemical Engineering Journal, 2016, Volume 292, Pages 123–129. Haomiao Xu, Hongbo Zhang, Songjian Zhao

  • Kinetics and mechanism of heterogeneous oxidation of ...

    2021-11-27 · Kinetics and mechanism of heterogeneous oxidation of sulfur dioxide by ozone on surface of calcium carbonate. Atmospheric Chemistry and ... uptake coefficient for SO2 oxidation by O3 was determined to be (1.4 ... some metal oxides (Goodman et al., 2001; Usher et al., 2002), and China loess (Usher et al., 2002) were used to study the kinetics of ...

  • The effects of nitrate on the heterogeneous uptake of ...

    2020-7-31 · 9452 L. D. Kong et al.: The effects of nitrate on the heterogeneous uptake of sulfur dioxide sulfate on aerosols has been receiving increasing attention in recent years. To date there have been a lot of studies regard-ing heterogeneous reactions of SO2 on various model oxides and mineral dust particles (Dentener et al., 1996; Goodman

  • A laboratory study of the heterogeneous uptake and ...

    2017-8-21 · S(IV) oxidation by molecular oxygen can be catalyzed by iron-containing species [Faust et al., 1989; Martin and Good, 1991; Siefert et al., 1996]. [5] In this laboratory study, we have investigated the heterogeneous uptake and oxidation of SO 2 on particles representative of mineral dust found in the troposphere.

  • Reaction between sulfur dioxide and iron oxide cationic ...

    2009-11-25 · Fu H, Wang X, Wu H, et al. Heterogeneous uptake and oxidation of SO 2 on iron oxides. J Phys Chem C, 2007, 111: 6077–6085. Article Google Scholar 16. Baltrusaitis J, Cwiertny D M, Grassian V H. Adsorption of sulfur dioxide on hematite and goethite particle surfaces. Phys Chem Chem Phys, 2007, 9: 5542–5554

  • The Irony of Iron – Biogenic Iron Oxides as an Iron Source ...

    2016-1-6 · Keywords: iron-oxidation, iron-oxidizing bacteria, iron cycle, biogenic iron, hydrothermal vents, hydrothermal diffuse flow, sediment transport, marine iron limitation Introduction An oceanographer on the deck of a research vessel in the center of a mid-ocean gyre adds a milliliter of a dilute solution of iron chloride to a tank of seawater ...

  • Absorption of SO2 from a Gas-Air Mixture by Solutions ...

    The chemisorption of sulfur(IV) oxide (SO 2) from air by natural aqueous media containing iron (Fe) ions is a current area of research interest.At the same time, studies of SO 2 absorption from gases with higher concentrations of SO 2 and at high temperature by solutions containing Fe compounds are not enough to predict the purification process of industrial waste sulfur …

  • ACS Publications: Chemistry journals, books, and ...

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  • (PDF) Heterogeneous Reaction of SO2 on Manganese …

    Manganese oxides from anthropogenic sources can promote the formation of sulfate through catalytic oxidation of SO2. In this study, the kinetics of SO2 reactions on MnO2 with different ...

  • "The Role Of Ferric Oxide Particles As Sources And Sinks ...

    The oxic portion of the biosphere is a metastable mixture of different oxidation states of carbon, sulfur and oxygen energetically poised from equilibrium by the net rate differentials between photosynthetic carbon fixation and its metabolic or abiotic oxidation. The direct reaction of dioxygen with reduced carbon or sulfur is spin forbidden and therefore kinetically slow, but …

  • Oxidation-Reduction Reactions of Sulfate and Sulfide in ...

    2020-10-13 · Oxidation-Reduction Reactions of Sulfate and Sulfide in Flooded and Nonflooded Soil. ... Effect of the Oxides of Iron.....21 C. Effect of Sulfide on the Heavy Metals in ... uptake of 35s by the rice plant, and percent uptake of the added 35s by the rice

  • Heterogeneous Uptake and Oxidation of SO 2 on Iron …

    2021-11-9 · Abstract. Heterogeneous oxidation of gas-phase SO 2 on different iron oxides was investigated in situ using a White cell coupled with Fourier transform infrared spectroscopy (FTIR) and …

  • Acidithiobacillus ferrooxidans metabolism: from genome ...

    2008-12-11 · Acidithiobacillus ferrooxidans is a major participant in consortia of microorganisms used for the industrial recovery of copper (bioleaching or biomining). It is a chemolithoautrophic, γ-proteobacterium using energy from the oxidation of iron- and sulfur-containing minerals for growth. It thrives at extremely low pH (pH 1–2) and fixes both carbon and nitrogen from the …

  • Sulfur isotope composition during heterogeneous …

    2021-6-1 · Heterogeneous Uptake and Oxidation of SO 2 on Iron Oxides J. Phys. Chem. C, 111 ( 16 ) ( 2007 ), pp. 6077 - 6085, 10.1021/jp070087b CrossRef View Record in …

  • Aerosols and Heterogeneous Chemistry

    2003-8-28 · SO2 oxidation. Halogen oxidation. HONO production. O3 loss on dust. HO2 uptake. Major References. Chapter 4 ("Aerosols and Clouds") in Atmospheric Chemistry and Global Change, Edited by Brasseur, Orlando and Tyndall, 1999. Heterogeneous and Multiphase Chemistry in the Troposphere, A.R. Ravishankara, Science, 276, pp. 1058-1065, 1997.

  • --UCAS

    (7) Enhanced heterogeneous uptake of sulfur dioxide on mineral particles through modification of iron speciation during simulated cloud processing, Atmos. Chem. Phys., 2019, 5 (8) A review of experimental techniques for aerosol hygroscopicity studies, Atmos. Chem. Phys., 2019, 1

  • The oxidation of iron around 200 °C | Proceedings of the ...

    Since oxidation now proceeds at an oxide-metal interface the optical homogeneity of the oxidized layer is very sensitive to the initial condition of the surface. Abraded surfaces carry initially a heterogeneous layer (abrasion-produced oxide in a matrix of iron) in which oxidation can proceed without contributing to the overlying (strippable ...

  • Heterogeneous Reactions of Sulfur Dioxide on Typical ...

    The heterogeneous reaction of SO2 on Al2O3, CaO, TiO2, MgO, FeOOH, Fe2O3, MnO2, and SiO2, as well as authentic aerosol sample, was investigated by using a White Cell coupled with in situ-FTIR and Diffuse Reflectance Infrared Fourier Transform Spectroscopy (DRIFTS). Simultaneous observations of reactants and products were performed to obtain full information …

  • Capacity of ferric oxide particles to oxidize sulfur ...

    The capacity of ferric oxide particles to oxidize sulfur dioxide in air was 313 micrograms/5 mg Fe/sub 2/O/sub 3/, and the reaction rate constant for the heterogeneous reaction was an estimated 0.0094/ppM min, with these parameters being insensitive to either relative humidity or sulfur dioxide concentration.

  • Chemistry and Mineralogy of Arsenic

    2010-1-11 · iron oxides on detrital minerals are thought to be important sorbents of arsenic in groundwa-ter aquifers and have been exploited as remedi-ation technologies for arsenic removal (Stollen-werk 2003). Other mineral sorbents, such as clays, aluminum oxyhydroxides, and man-ganese oxides, may also take up arsenic, partic-ularly in low-iron settings.

  • Laboratory simulation of SO2 heterogeneous reactions on ...

    2009-1-1 · Heterogeneous reactions on the surface of fine particles in the atmosphere. Chinese Science Bulletin, 48(21): 2267276. Fu H B, Wang X, Wu H B, Yin Y, Chen J M, 2007. Heterogeneous uptake and oxidation of SO2 on iron oxides. Journal of Physical Chemistry C, 111: 6077085. Gao Y C, Chen D, 2006. Heterogeneous reactions of sulfur dioxide on dust.

  • --UCAS

    (15) Heterogeneous reaction of NO2 with soot at different relative humidity, Environ. Sci. Pollut. Res., 2017, (16) Heterogeneous reaction of SO2 on manganese oxides: the effect of crystal structure and relative humidity, Sci. Rep., 2017,

  • Heterogeneous Uptake and Oxidation of SO 2 on Iron …

    Heterogeneous oxidation of gas-phase SO2 on different iron oxides was investigated in situ using a White cell coupled with Fourier transform infrared spectroscopy (FTIR) and diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS).

  • Heterogeneous catalysis for green chemistry based on ...

    INTRODUCTION. Heterogeneous catalysts are vital to many industries including chemical manufacturing, energy-related applications and environmental remediation [].Nanocrystals (NCs) finely dispersed on high-surface-area oxides are the most widely used heterogeneous catalysts, with catalytic activity and selectivity of the supported NCs strongly dependent on their size and …

  • Heterogeneous Uptake and Oxidation of SO2 on Iron …

    2014-5-21 · : Heterogeneous Uptake and Oxidation of SO2on Iron OxidesHongbo Fu, Xiao Wang, Hongbo Wu, Yong Yin, and Jianmin Chen*Center for Atmospheric Chemistry Study, Department ofEnVironmental Science & Engineering,Fudan UniVersity, Shanghai 200433, ChinaReceiVed: January 5, 2007; In Final Form: February 14, 2007Heterogeneous oxidation …

  • Heterogeneous Catalytic Oxidation of Amides to Imides by ...

    2018-9-11 · Herein, we report a one-step peroxide mediated heterogeneous catalytic oxidation of amides to imides utilizing a series of manganese oxides. Among them, Cs/Mn2O3 was found to be the most active ...

  • CityU | Chak K. Chan

    Heterogeneous SO2 Oxidation in Sulfate Formation by Photolysis of Particulate Nitrate Masao Gen, Ruifeng Zhang, Dan Dan Huang, Yongjie Li, and Chak K. Chan We are very honored to receive this award and are grateful to the ESTL editors.

  • Heterogeneous reactions of SO2 on ZnO particle surfaces ...

    2011-1-8 · Heterogeneous reactions of SO 2 on ZnO particle surfaces were studied using in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The influences of relative humidity (RH) and UV radiation (λ ≈ 365 nm) were investigated. In the absence of UV radiation, sulfite was the prominent product on the particle surfaces, and a negative relationship between …

  • Effect of Metal Oxides and Smelting Dust on SO2 …

    2021-6-8 · The purpose of this study was to investigate the effects of metal oxides and smelting dust on the formation of sulfur trioxide during copper, lead, zinc smelting process and flue. Focusing on the effects of SO2 concentration, O2 concentration, and temperature on SO2 oxidation conversion rate under homogeneous test conditions, and under various metal oxide …

  • A laboratory study of the heterogeneous uptake and ...

    2002-12-12 · [1] The heterogeneous uptake and oxidation of SO 2 on particle surfaces representative of mineral dusts found in the atmosphere have been investigated. These particles include metal oxides (e.g., hematite, corundum), calcite, and China loess. FT-IR spectroscopy was used to characterize surface-bound species following exposure to gaseous SO 2 was …

  • Heterogeneous Reaction of SO 2 on Manganese Oxides: …

    2017-7-3 · For iron-containing dust, a number of studies are available investigating the influences of its morphology and existing water on the heterogeneous oxidation of SO 2 25, 29, 34 – 36. For instance, Fu et al . 34 reported that α-Fe 2 O 3 achieved the best performance in the catalytic oxidation of SO 2 among different crystal phases of iron oxides.

  • - . . Strengthen the Affinity of Element Mercury on the Carbon-Based Material by Adjusting the Coordination Environment of Single-Site Manganese. Jiaxing Li, Haomiao Xu, Zhijie Huang, Qinyuan Hong, Yixiang Qiu, Naiqiang Yan, Zan Qu*. Environmental Science & Technology.

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