Understanding the Synthesis of Supported Vanadium Oxide Catalysts Using Chemical Grafting

Love, Alyssa M.; Cendejas, Melissa C.; Hanrahan, Michael P.; Carnahan, Scott L.; Uchupalanun, Pajean; Rossini, Aaron J.; Hermans, Ive

doi:10.1002/chem.201904260

Title: Understanding the Synthesis of Supported Vanadium Oxide Catalysts Using Chemical Grafting

Journal Article · Fri Dec 06 00:00:00 EST 2019 · Chemistry - A European Journal

DOI:https://doi.org/10.1002/chem.201904260· OSTI ID:1577412

Love, Alyssa M. ^[1]; Cendejas, Melissa C. ^[1]; Hanrahan, Michael P. ^[2]; Carnahan, Scott L. ^[2]; Uchupalanun, Pajean ^[1]; Rossini, Aaron J. ^[3];

^[4]

Department of Chemistry University of Wisconsin–Madison 1101 University Avenue Madison WI 53706 USA
Department of Chemistry Iowa State University 1605 Gilman Hall Ames IA 50011 USA
Department of Chemical and Biological Engineering University of Wisconsin–Madison 1415 Engineering Drive Madison WI 53706 USA
Department of Chemistry University of Wisconsin–Madison 1101 University Avenue Madison WI 53706 USA, Department of Chemical and Biological Engineering University of Wisconsin–Madison 1415 Engineering Drive Madison WI 53706 USA

Abstract The complexity of variables during incipient wetness impregnation synthesis of supported metal oxides precludes an in‐depth understanding of the chemical reactions governing the formation of the dispersed oxide sites. This contribution describes the use of vapor phase deposition chemistry (also known as grafting) as a tool to systematically investigate the influence of isopropanol solvent on VO(O ⁱ Pr) ₃ anchoring during synthesis of vanadium oxide on silica. The availability of anchoring sites on silica was found to depend not only on the pretreatment of the silica but also on the solvent present. H‐bond donors can reduce the reactivity of isolated silanols whereas disruption of silanol nests by H‐bond acceptors can turn unreactive H‐bonded silanols into reactive anchoring sites. The model suggested here can inform improved syntheses with increased dispersion of metal oxides on silica.

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Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-07CH11358

OSTI ID:: 1577412

Journal Information:: Chemistry - A European Journal, Journal Name: Chemistry - A European Journal Vol. 26 Journal Issue: 5; ISSN 0947-6539

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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Cited by: 9 works

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