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Georgia Tech

1. Wyrwas, Richard Ben, Jr. Vanadium Oxide Anions Clusters: Their Abundances, Structures and Reactions with SO₂.

Degree: PhD, Chemistry and Biochemistry, 2004, Georgia Tech

Early transition metal oxide clusters have been a focus of study for several years. The production of vanadium oxide cluster anions in a pulsed helium flow reactor provides a relatively precise way of introducing defect sites and controlling the oxidation state of the vanadium atoms. The composition of the clusters can be changed from the V2O5 stoichiometry, where the vanadium atom is in a +5 oxidation state, to more reduced stoichiometries yielding a mixture of oxidation states containing atoms in the +2 oxidation state. The subsequent addition of reactant gases such as H2O and SO2 yields very intense adsorption reactions as well as a demonstration of the robustness of particular defect free clusters. For example, the cluster has been identified as a defect free cluster where all vanadium atoms are in the +5 oxidation state and all oxygen atoms are predicted to be in the 2- state. The cluster has been shown to not adsorb SO2- while clusters in a reduced oxidation state, such as and readily adsorb one or more SO2 molecules. The adsorption process has been shown to be size dependent, with the smallest monovanadium oxide anions being the most reactive. Advisors/Committee Members: Whetten, Robert L. (Committee Chair), El-Sayed, Mostafa A (Committee Member), First, Phillip N (Committee Member), Sherrill, C. David (Committee Member), Wine, Paul H. (Committee Member).

Subjects/Keywords: Time-of-flight mass spectrometry; Cluster reactivities; Carbon anion clusters; Gas phase cluster reactions; Sulfuric acid production; Vanadium oxide clusters; Metal oxide cluster anions; Vanadium oxide Synthesis Experiments; Vanadium oxide Experiments; Transition metal compounds Synthesis Experiments; Surface active agents Experiments

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Wyrwas, Richard Ben, J. (2004). Vanadium Oxide Anions Clusters: Their Abundances, Structures and Reactions with SO₂. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/4908

Chicago Manual of Style (16th Edition):

Wyrwas, Richard Ben, Jr. “Vanadium Oxide Anions Clusters: Their Abundances, Structures and Reactions with SO₂.” 2004. Doctoral Dissertation, Georgia Tech. Accessed October 21, 2019. http://hdl.handle.net/1853/4908.

MLA Handbook (7th Edition):

Wyrwas, Richard Ben, Jr. “Vanadium Oxide Anions Clusters: Their Abundances, Structures and Reactions with SO₂.” 2004. Web. 21 Oct 2019.

Vancouver:

Wyrwas, Richard Ben J. Vanadium Oxide Anions Clusters: Their Abundances, Structures and Reactions with SO₂. [Internet] [Doctoral dissertation]. Georgia Tech; 2004. [cited 2019 Oct 21]. Available from: http://hdl.handle.net/1853/4908.

Council of Science Editors:

Wyrwas, Richard Ben J. Vanadium Oxide Anions Clusters: Their Abundances, Structures and Reactions with SO₂. [Doctoral Dissertation]. Georgia Tech; 2004. Available from: http://hdl.handle.net/1853/4908

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