Výsledky vyhledávání - "James R. Rustad"

Pathways for oxygen-isotope exchange in two model oxide clusters

Autor: James R. Rustad, William H. Casey

Publikováno v: New Journal of Chemistry, vol 40, iss 2

Studies of oxygen-isotope-exchanges in two classes of polyoxoions have uncovered some similarities in reaction steps that are also consistent with mineral-dissolution studies. The molecules were polyoxocations of Group 13 and polyoxoanions of Group 5

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4127d0a65812e4feb33a190ba9dcfbce
https://doi.org/10.1039/c5nj00985e

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Theoretical isotopic fractionation between structural boron in carbonates and aqueous boric acid and borate ion

Autor: Jacques Schott, Fabio Pietrucci, Etienne Balan, James R. Rustad, Giuseppe D. Saldi, Christel Gervais, Jérôme Gaillardet, Valérie Montouillout, Marc Blanchard, Vasileios Mavromatis, Johanna Noireaux

Publikováno v: Geochimica et Cosmochimica Acta
Geochimica et Cosmochimica Acta, 2018, 222, pp.117-129. ⟨10.1016/j.gca.2017.10.017⟩
Geochimica et Cosmochimica Acta, Elsevier, 2018, 222, pp.117-129. ⟨10.1016/j.gca.2017.10.017⟩
Geochimica et Cosmochimica Acta, Elsevier, 2017, 222, pp.117-129. ⟨10.1016/j.gca.2017.10.017⟩
Balan, Etienne; Noireaux, Johanna; Mavromatis, Vasileios; Saldi, Giuseppe D.; Montouillout, Valérie; Blanchard, Marc; Pietrucci, Fabio; Gervais, Christel; Rustad, James R.; Schott, Jacques; Gaillardet, Jérôme (2018). Theoretical isotopic fractionation between structural boron in carbonates and aqueous boric acid and borate ion. Geochimica et cosmochimica acta, 222, pp. 117-129. Elsevier Science 10.1016/j.gca.2017.10.017

International audience; The 11B/10B ratio in calcite and aragonite is an important proxy of oceanic water pH. However, the physico-chemical mechanisms underpinning this approach are still poorly known. In the present study, we theoretically determine

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::465a9a73e456703fa21ef322df45305e
https://hal.sorbonne-universite.fr/hal-01628373

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Structural convergence properties of amorphous InGaZnO

Autor: Jacob C, Buchanan, Dylan B, Fast, Benjamin E, Hanken, Thomas J L, Mustard, Geneva, Laurita, Tsung-Han, Chiang, Douglas A, Keszler, Mas A, Subramanian, John F, Wager, Michelle R, Dolgos, James R, Rustad, Paul Ha-Yeon, Cheong

Publikováno v: Dalton transactions (Cambridge, England : 2003). 46(44)

The study of structural properties of amorphous structures is complicated by the lack of long-range order and necessitates the use of both cutting-edge computer modeling and experimental techniques. With regards to the computer modeling, many questio

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=pmid________::55d2c51feb65410e084dd0f229042cc6
https://pubmed.ncbi.nlm.nih.gov/29068444

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Investigating the behaviour of Mg isotopes during the formation of clay minerals

Autor: William H. Casey, James R. Rustad, Christopher A. Colla, Qing-Zhu Yin, Joshua Wimpenny

Publikováno v: Geochimica et Cosmochimica Acta. 128:178-194

We present elemental and isotopic data detailing how the Mg isotope system behaves in natural and experimentally synthesized clay minerals. We show that the bulk Mg isotopic composition (δ 26 Mg) of a set of natural illite, montmorillonite and kaoli

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https://doi.org/10.1016/j.gca.2013.12.012

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Calcium-isotope fractionation between solution and solids with six, seven or eight oxygens bound to Ca(II)

Autor: William H. Casey, James R. Rustad, Christopher A. Colla, Qing-Zhu Yin, Joshua Wimpenny

Publikováno v: Geochimica et Cosmochimica Acta. 121:363-373

The aqueous-mineral Δ44/40Casolid–solution fractionation factors were measured for equilibrating solutions and a set of inorganic solids that trap solvated calcium in six, seven and eight coordination as an intact solvated ion in the lattice. The

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::42e516f31fad624948e1c4a8d429916b
https://doi.org/10.1016/j.gca.2013.07.041

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Ab initiocalculation of the deprotonation constants of an atomistically defined nanometer-sized, aluminium hydroxide oligomer

Autor: Kevin L. Shuford, William H. Casey, Matthew C. F. Wander, James R. Rustad

Publikováno v: Molecular Simulation. 39:220-227

Aluminium possesses significant and diverse chemistry. Numerous compounds have been defined, and the elucidation of their chemistry is of significant geochemical interest. In this paper, a brucite-like, eight-aluminium aqueous cluster is modelled wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a3f4e4adba63769047aca8ef5d9145e4
https://doi.org/10.1080/08927022.2012.717280

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Cooperation between bound waters and hydroxyls in controlling isotope-exchange rates

Autor: William H. Casey, C. André Ohlin, J. Gregory McAlpin, Shauna Christensen, Adele F. Panasci, R. David Britt, James R. Rustad, James C. Fettinger

Publikováno v: Geochimica et Cosmochimica Acta. 78:18-27

Mineral oxides differ from aqueous ions in that the bound water molecules are usually attached to different metal centers, or vicinal, and thus separated from one another. In contrast, for most mon ...

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2a085f942c7efbe23e38d3e49e6d7587
https://doi.org/10.1016/j.gca.2011.10.041

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Peak Nothing: Recent Trends in Mineral Resource Production

Autor: James R. Rustad

Publikováno v: Environmental Science & Technology. 46:1903-1906

The production histories of seventeen raw materials are analyzed with the logistic model. Although many of these resources have exhibited logistic behavior in the past, they now show exponential or super-exponential growth. In most cases, the transit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96e5272a2dbe16fa02a471a0dd779f63
https://doi.org/10.1021/es203065g

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Metastable structures and isotope exchange reactions in polyoxometalate ions provide a molecular view of oxide dissolution

Autor: William H. Casey, James R. Rustad

Publikováno v: Nature Materials. 11:223-226

Reactions involving minerals and glasses in water are slow and difficult to probe spectroscopically but are fundamental to the performance of oxide materials in green technologies such as automotive thermoelectric power generation, CO2 capture and st

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::046424981216093c4149b20fe037e937
https://doi.org/10.1038/nmat3203

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