Interaction of water vapor with clean and oxygen-covered uranium surfaces

Winer, K.; Colmenares, C.A.; Smith, Rachael L.; Wooten, F.

doi:10.1016/s0039-6028(87)80336-9

Cited by 78 publications

(39 citation statements)

References 44 publications

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“…The low-energy contribution of the XPS band corresponds mainly to the metal phase on silica Fe/SiO 2 (Paparazzo 1987). The high-energy contribution is typical for oxygen in hydroxide (Winer et al 1987).…”

Section: Mechanism Discussionmentioning

confidence: 94%

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Mesoporous SBA-15 Supported Iron Oxide: A Potent Catalyst for Hydrogen Sulfide Removal

Wang

Jia

Zhao

et al. 2008

Water Air Soil Pollut

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A novel silicate mesoporous material, SBA-15 supported Fe 2 O 3 , was synthesized by post-synthesis method via ultrasonic-assisted route. The desulfurization test from a gas mixture containing 0.1 vol% H 2 S was carried out over SBA-15 supported Fe 2 O 3 in a fixed-bed system at atmospheric pressure and room temperature. The effects of the chemical nature of Fe 2 O 3 and the textural properties of the material on desulfurization capacity were studied. Materials before and after the desulfurization test were characterized using nitrogen adsorption, XRD, TEM, FTIR, XPS, ICP and other standard methods. The characterization results suggest that modification process does not change the two-dimensional hexagonal mesostructure of SBA-15. Iron species disperses inside channels and the outside surface in the crystalline phase of iron oxide. The material with iron content of 31.3 wt% presented highest H 2 S uptake capacity. Structural properties of the material also play important roles in desulfurization performance besides the catalytic effects of iron oxide. The basic feature of material and enough oxygen supply are benefit for the reaction. SBA-15 supported Fe 2 O 3 can be an effective alternative to capture H 2 S from gas streams.

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Section: Mechanism Discussionmentioning

confidence: 94%

“…6a) shows that, apart from carbon, the surface of SF consists mainly of Fe, Si and O. The O 1s binding energy for SF shows a main peak at 534 eV, which is assigned to oxygen in hydroxide (Winer et al 1987) (Fig. 6b).…”

Section: Mechanism Discussionmentioning

confidence: 96%

Mesoporous SBA-15 Supported Iron Oxide: A Potent Catalyst for Hydrogen Sulfide Removal

Wang

Jia

Zhao

et al. 2008

Water Air Soil Pollut

View full text Add to dashboard Cite

show abstract

“…McD. Baker et al [29] account for results of isotopic-exchange studies in which labeled oxygen (OZ*) was transformed into HZO*during corrosion of U by moist oxygen.…”

Section: Evaluation Of Proposed Mechanismsmentioning

confidence: 99%

“…Time dependence of~mtifuents in the gas phase during reaction of uranium metal with a 3:2 OZ:HZOmixture at 100"C. The data are from the report by McD. Baker, Ness, and Orman [29].…”

Section: U(h) (S) + 21-40 (Ads)+ U02(pu02) (S) + 4h (Ads)mentioning

confidence: 99%

Reactions of plutonium dioxide with water and oxygen-hydrogen mixtures: Mechanisms for corrosion of uranium and plutonium

Haschke¹,

Allen²,

Morales³

1999

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“…It is generally found that less dian the stoichiometric amount of hydrogen gas is formed in this reaction; most researchers report the presence of UH3 to account for die remainder of the hydrogen. The reported values of the percentages of UH3 in the nominally oxide reaction product vary from 2% to 30% [4][5][6]; the exact mechanism of hydride formation is still under debate. Instances of higher percentages formed in corrosion products have been limited to crevice-type corrosion where diere is limited access of die ambient environment to the reaction product.…”

Section: Part 1 the Zppr Fuel Experience: A Case History Of Uranium Cmentioning

confidence: 99%

Metallic uranium ZPPR fuel : corrosion characteristics and corrosion product oxidation kinetics.

Totemeier¹,

Pahl²,

Hayes³

et al. 1998

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Interaction of water vapor with clean and oxygen-covered uranium surfaces

Cited by 78 publications

References 44 publications

Mesoporous SBA-15 Supported Iron Oxide: A Potent Catalyst for Hydrogen Sulfide Removal

Mesoporous SBA-15 Supported Iron Oxide: A Potent Catalyst for Hydrogen Sulfide Removal

Reactions of plutonium dioxide with water and oxygen-hydrogen mixtures: Mechanisms for corrosion of uranium and plutonium

Metallic uranium ZPPR fuel : corrosion characteristics and corrosion product oxidation kinetics.

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