FTIR studie adsorpce methanolu, formaldehydu a methylformiátu na povrchu Mo/Sn oxidového katalyzátoru

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216275%3A25310%2F06%3A00004394" target="_blank" >RIV/00216275:25310/06:00004394 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

FTIR study of methanol, formaldehyde and methyl formate adsorption on the surface of Mo/ Sn oxide catalyst

Popis výsledku v původním jazyce

The FTIR spectra of the surface species arising from the adsorption of methanol, formaldehyde and methyl formate on mixed molybdenum-stannic oxide with Mo / (Mo + Sn) = 0.1 are discussed. Methanol is adsorbed mainly in the undissociated form due to hydrogen bond on a cation-anion couple with basic character. Methoxy complex is oxidized to a bidendate formate near 473 K. Hydrogen-bonded H2CO, coordinatively bonded H2CO, bidendate formate and polymer species are observed during the adsorption of formaldehyde at pressure 1.5 kPa. Methyl formate is adsorbed in the form of hydrogen-bonded HCOOCH3, HCOOCH3 coordinatively bonded, methoxy complex and bidentate formate. In contrast to MoO3-SnO2 catalyst with molar ratio Mo / (Mo + Sn) = 0.3, formates are more stable up to 473 K. This can be explained by the contribution of Sn ions during their interaction with CH3OH, H2CO and HCOOCH3.

Název v anglickém jazyce

FTIR study of methanol, formaldehyde and methyl formate adsorption on the surface of Mo/ Sn oxide catalyst

Popis výsledku anglicky

The FTIR spectra of the surface species arising from the adsorption of methanol, formaldehyde and methyl formate on mixed molybdenum-stannic oxide with Mo / (Mo + Sn) = 0.1 are discussed. Methanol is adsorbed mainly in the undissociated form due to hydrogen bond on a cation-anion couple with basic character. Methoxy complex is oxidized to a bidendate formate near 473 K. Hydrogen-bonded H2CO, coordinatively bonded H2CO, bidendate formate and polymer species are observed during the adsorption of formaldehyde at pressure 1.5 kPa. Methyl formate is adsorbed in the form of hydrogen-bonded HCOOCH3, HCOOCH3 coordinatively bonded, methoxy complex and bidentate formate. In contrast to MoO3-SnO2 catalyst with molar ratio Mo / (Mo + Sn) = 0.3, formates are more stable up to 473 K. This can be explained by the contribution of Sn ions during their interaction with CH3OH, H2CO and HCOOCH3.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Applied catalysis A-General

ISSN

0926-860X

e-ISSN

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Svazek periodika

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Číslo periodika v rámci svazku

309

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

4

Strana od-do

33-35

Kód UT WoS článku

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EID výsledku v databázi Scopus

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