Reactions of Neutral and Charged Molybdenum Oxide Clusters with Low-Molecular-Weight Alcohols in a Gas Phase Studied by Ion Cyclotron Resonance |
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Authors: | Goncharov V. B. |
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Affiliation: | (1) Boreskov Institute of Catalysis, Siberian Division, Russian Academy of Sciences, Novosibirsk, 630090, Russia |
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Abstract: | A set of oxygen-containing molybdenum oxide clusters MoxOy (x = 1–3; y = 1–9) was obtained with the use of a combination of a Knudsen cell and an ion trap cell. The reactions of positively charged clusters with C1–C4 alcohols were studied using ion cyclotron resonance. The formation of a number of organometallic ions, the products of initial insertion of molybdenum oxide ions into the C–O and C–H bonds of alcohols, and polycondensation products of methanol and ethanol were found. The reactions of neutral molybdenum oxide clusters MoxOy (x = 1–3; y = 1–9) with protonated C1–C4 alcohols and an ammonium ion were studied. The following limits of proton affinity (PA) were found for neutral oxygen-containing molybdenum clusters: (MoO) < 180, (Mo2O4, Mo2O5, and Mo3O8) = 188 ± 8, PA(MoO2) = 202 ± 5, PA(MoO3, Mo2O6, and Mo3O9) > 207 kcal/mol. |
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