TY - JOUR
T1 - Promotion effects of vanadium, niobium, molybdenum, tungsten, and rhenium oxides on surface reactions in the CO hydrogenation over Ru/Al2O3 catalyst
AU - Mori, Toshiaki
AU - Miyamoto, Akira
AU - Takahashi, Naoki
AU - Fukagaya, Masato
AU - Hattori, Tadashi
AU - Murakami, Yuichi
PY - 1986
Y1 - 1986
N2 - By use of the PSRA (pulse surface reaction rate analysis) apparatus equipped with an EDR (emissionless infrared diffuse reflectance spectrometer) and an FID (flame ionization detector), the promotion effects of oxides of V, Nb, Mo, W, and Re have been investigated for the surface hydrogenation reaction of CO over Ru/Al2O3 catalysts. These promoters markedly increase the rate constant for the dissociation of CO to form (CHx)ad (kCO), while decreasing the rate constant for the hydrogenation of (CHx)ad to CH4 (kCHx). In accordance with the observed change in rate constants, it was found that the surface concentration (CHx)ad species on the catalyst increased during the steady-state reaction, resulting in an increase in the yield of higher molecular weight hydrocarbons. The promotion mechanism leading to the dissociation of CO is discussed on the basis of the results obtained from PSRA.
AB - By use of the PSRA (pulse surface reaction rate analysis) apparatus equipped with an EDR (emissionless infrared diffuse reflectance spectrometer) and an FID (flame ionization detector), the promotion effects of oxides of V, Nb, Mo, W, and Re have been investigated for the surface hydrogenation reaction of CO over Ru/Al2O3 catalysts. These promoters markedly increase the rate constant for the dissociation of CO to form (CHx)ad (kCO), while decreasing the rate constant for the hydrogenation of (CHx)ad to CH4 (kCHx). In accordance with the observed change in rate constants, it was found that the surface concentration (CHx)ad species on the catalyst increased during the steady-state reaction, resulting in an increase in the yield of higher molecular weight hydrocarbons. The promotion mechanism leading to the dissociation of CO is discussed on the basis of the results obtained from PSRA.
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U2 - 10.1021/j100412a061
DO - 10.1021/j100412a061
M3 - Article
AN - SCOPUS:0142252214
VL - 90
SP - 5197
EP - 5201
JO - Journal of Physical Chemistry
JF - Journal of Physical Chemistry
SN - 0022-3654
IS - 21
ER -