FTIR and mass spectrometric studies on the interaction of formaldehyde with TiO2 supported Pt and Au catalysts

T. Kecskés, J. Raskó, J. Kiss

Research output: Contribution to journalArticle

82 Citations (Scopus)

Abstract

The interaction of formaldehyde with Pt/TiO2 and Au/TiO 2 catalysts was investigated at 300-473K by Fourier transform infrared spectroscopy and mass spectrometry. The effects of the pretreatments and the metal content of the catalysts, as well as the effects of the reaction temperature on the formation of the surface species and on the gas phase products were studied. Molecularly adsorbed formaldehyde, formic acid, formate, dioxymethylene and polyoxymethylene surface species are formed during formaldehyde adsorption at 300-473K. The main gas phase products were H 2 and CO; their amounts increased with the increase of the metal content of the catalysts and with the increase of the reaction temperature. Gas phase ethylene, acetylene, as well as formic acid were detected on pure TiO 2. On metal-containing TiO2 no ethylene, acetylene and formic acid were observed, which could be connected with the limited surface concentration of oxygen vacancies on these surfaces.

Original languageEnglish
Pages (from-to)55-62
Number of pages8
JournalApplied Catalysis A: General
Volume273
Issue number1-2
DOIs
Publication statusPublished - Oct 8 2004

Fingerprint

formic acid
Formaldehyde
Formic acid
Acetylene
Catalysts
Gases
Metals
Ethylene
Oxygen vacancies
Carbon Monoxide
Fourier transform infrared spectroscopy
Mass spectrometry
Adsorption
Temperature

Keywords

  • Formaldehyde adsorption and reactions
  • Gas phase products detected by MS
  • Pt/TiO and Au/TiO catalysts
  • Surface species studied by FTIR

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

FTIR and mass spectrometric studies on the interaction of formaldehyde with TiO2 supported Pt and Au catalysts. / Kecskés, T.; Raskó, J.; Kiss, J.

In: Applied Catalysis A: General, Vol. 273, No. 1-2, 08.10.2004, p. 55-62.

Research output: Contribution to journalArticle

@article{2cdafefe8b8547ad9ffbc56d7946097c,
title = "FTIR and mass spectrometric studies on the interaction of formaldehyde with TiO2 supported Pt and Au catalysts",
abstract = "The interaction of formaldehyde with Pt/TiO2 and Au/TiO 2 catalysts was investigated at 300-473K by Fourier transform infrared spectroscopy and mass spectrometry. The effects of the pretreatments and the metal content of the catalysts, as well as the effects of the reaction temperature on the formation of the surface species and on the gas phase products were studied. Molecularly adsorbed formaldehyde, formic acid, formate, dioxymethylene and polyoxymethylene surface species are formed during formaldehyde adsorption at 300-473K. The main gas phase products were H 2 and CO; their amounts increased with the increase of the metal content of the catalysts and with the increase of the reaction temperature. Gas phase ethylene, acetylene, as well as formic acid were detected on pure TiO 2. On metal-containing TiO2 no ethylene, acetylene and formic acid were observed, which could be connected with the limited surface concentration of oxygen vacancies on these surfaces.",
keywords = "Formaldehyde adsorption and reactions, Gas phase products detected by MS, Pt/TiO and Au/TiO catalysts, Surface species studied by FTIR",
author = "T. Kecsk{\'e}s and J. Rask{\'o} and J. Kiss",
year = "2004",
month = "10",
day = "8",
doi = "10.1016/j.apcata.2004.06.012",
language = "English",
volume = "273",
pages = "55--62",
journal = "Applied Catalysis A: General",
issn = "0926-860X",
publisher = "Elsevier",
number = "1-2",

}

TY - JOUR

T1 - FTIR and mass spectrometric studies on the interaction of formaldehyde with TiO2 supported Pt and Au catalysts

AU - Kecskés, T.

AU - Raskó, J.

AU - Kiss, J.

PY - 2004/10/8

Y1 - 2004/10/8

N2 - The interaction of formaldehyde with Pt/TiO2 and Au/TiO 2 catalysts was investigated at 300-473K by Fourier transform infrared spectroscopy and mass spectrometry. The effects of the pretreatments and the metal content of the catalysts, as well as the effects of the reaction temperature on the formation of the surface species and on the gas phase products were studied. Molecularly adsorbed formaldehyde, formic acid, formate, dioxymethylene and polyoxymethylene surface species are formed during formaldehyde adsorption at 300-473K. The main gas phase products were H 2 and CO; their amounts increased with the increase of the metal content of the catalysts and with the increase of the reaction temperature. Gas phase ethylene, acetylene, as well as formic acid were detected on pure TiO 2. On metal-containing TiO2 no ethylene, acetylene and formic acid were observed, which could be connected with the limited surface concentration of oxygen vacancies on these surfaces.

AB - The interaction of formaldehyde with Pt/TiO2 and Au/TiO 2 catalysts was investigated at 300-473K by Fourier transform infrared spectroscopy and mass spectrometry. The effects of the pretreatments and the metal content of the catalysts, as well as the effects of the reaction temperature on the formation of the surface species and on the gas phase products were studied. Molecularly adsorbed formaldehyde, formic acid, formate, dioxymethylene and polyoxymethylene surface species are formed during formaldehyde adsorption at 300-473K. The main gas phase products were H 2 and CO; their amounts increased with the increase of the metal content of the catalysts and with the increase of the reaction temperature. Gas phase ethylene, acetylene, as well as formic acid were detected on pure TiO 2. On metal-containing TiO2 no ethylene, acetylene and formic acid were observed, which could be connected with the limited surface concentration of oxygen vacancies on these surfaces.

KW - Formaldehyde adsorption and reactions

KW - Gas phase products detected by MS

KW - Pt/TiO and Au/TiO catalysts

KW - Surface species studied by FTIR

UR - http://www.scopus.com/inward/record.url?scp=4243192422&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=4243192422&partnerID=8YFLogxK

U2 - 10.1016/j.apcata.2004.06.012

DO - 10.1016/j.apcata.2004.06.012

M3 - Article

AN - SCOPUS:4243192422

VL - 273

SP - 55

EP - 62

JO - Applied Catalysis A: General

JF - Applied Catalysis A: General

SN - 0926-860X

IS - 1-2

ER -