TY - JOUR
T1 - FTIR study of adsorption and reactions of methyl formate on powdered TiO2
AU - Chuang, Chih Chung
AU - Wu, Wen Chun
AU - Huang, Ming Chih
AU - Huang, I. Chieh
AU - Lin, Jong Liang
N1 - Funding Information:
We gratefully acknowledge the financial support of the National Science Council of the Republic of China (Grant NSC-87-2113-M-006-014) for this research.
PY - 1999
Y1 - 1999
N2 - 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.
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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U2 - 10.1006/jcat.1999.2516
DO - 10.1006/jcat.1999.2516
M3 - Article
AN - SCOPUS:0000446203
SN - 0021-9517
VL - 185
SP - 423
EP - 434
JO - Journal of Catalysis
JF - Journal of Catalysis
IS - 2
M1 - jcat.1999.2516
ER -