FTIR study of adsorption and reactions of methyl formate on powdered TiO2

Chih Chung Chuang; Wen Chun Wu; Ming Chih Huang; I. Chieh Huang; Jong Liang Lin

doi:10.1006/jcat.1999.2516

FTIR study of adsorption and reactions of methyl formate on powdered TiO₂

Chih Chung Chuang, Wen Chun Wu, Ming Chih Huang, I. Chieh Huang, Jong Liang Lin

Department of Chemistry

Research output: Contribution to journal › Article

105 Citations (Scopus)

Abstract

Adsorption, thermochemistry, and photochemistry of methyl formate on powdered TiO₂ have been studied by Fourier-transformed infrared spectroscopy. Methyl formate is adsorbed on the TiO₂ surface in two forms. One is molecularly adsorbed methyl formate showing a red-shifted carbonyl stretching. The other is a structure-reorganized species showing absorption bands at 2841, 2866, and 2942 cm^-1 in the CH_x stretching region. An orthoester-type intermediate is proposed to explain the observed infrared absorption bands. In the thermal reactions, all the detected carbon-containing gas products are derived from CH₃O_(a) and HCOO_(a), which are generated as surface intermediates in the process of methyl formate decomposition. In methyl formate photochemistry, both O₂ and TiO₂ are essential. The origins of the gas products relating to the adsorbed species are also discussed.

Original language	English
Article number	jcat.1999.2516
Pages (from-to)	423-434
Number of pages	12
Journal	Journal of Catalysis
Volume	185
Issue number	2
DOIs	https://doi.org/10.1006/jcat.1999.2516
Publication status	Published - 1999 Jan 1

All Science Journal Classification (ASJC) codes

Catalysis
Physical and Theoretical Chemistry

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10.1006/jcat.1999.2516

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Chuang, C. C., Wu, W. C., Huang, M. C., Huang, I. C., & Lin, J. L. (1999). FTIR study of adsorption and reactions of methyl formate on powdered TiO₂. Journal of Catalysis, 185(2), 423-434. [jcat.1999.2516]. https://doi.org/10.1006/jcat.1999.2516

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abstract = "Adsorption, thermochemistry, and photochemistry of methyl formate on powdered TiO2 have been studied by Fourier-transformed infrared spectroscopy. Methyl formate is adsorbed on the TiO2 surface in two forms. One is molecularly adsorbed methyl formate showing a red-shifted carbonyl stretching. The other is a structure-reorganized species showing absorption bands at 2841, 2866, and 2942 cm-1 in the CHx stretching region. An orthoester-type intermediate is proposed to explain the observed infrared absorption bands. In the thermal reactions, all the detected carbon-containing gas products are derived from CH3O(a) and HCOO(a), which are generated as surface intermediates in the process of methyl formate decomposition. In methyl formate photochemistry, both O2 and TiO2 are essential. The origins of the gas products relating to the adsorbed species are also discussed.",

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AU - Chuang, Chih Chung

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AB - Adsorption, thermochemistry, and photochemistry of methyl formate on powdered TiO2 have been studied by Fourier-transformed infrared spectroscopy. Methyl formate is adsorbed on the TiO2 surface in two forms. One is molecularly adsorbed methyl formate showing a red-shifted carbonyl stretching. The other is a structure-reorganized species showing absorption bands at 2841, 2866, and 2942 cm-1 in the CHx stretching region. An orthoester-type intermediate is proposed to explain the observed infrared absorption bands. In the thermal reactions, all the detected carbon-containing gas products are derived from CH3O(a) and HCOO(a), which are generated as surface intermediates in the process of methyl formate decomposition. In methyl formate photochemistry, both O2 and TiO2 are essential. The origins of the gas products relating to the adsorbed species are also discussed.

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