Abstract
The hydrogenation of carbon monoxide was carried out over palladium catalysts prepared by a novel preparation method using water-in-oil microemulsion. The catalytic performance of those catalysts was compared with that of the catalysis prepared by the conventional impregnation method. The catalysts prepared by the microemulsion method were found to exhibit a much higher activity for the hydrogenation of CO than those prepared by the impregnation method. The size distribution of the palladium particles of the catalysts prepared by the microemulsion method was remarkably narrow, and the average particle size was much smaller than that of the catalysts prepared by the impregnation method. It was found that palladium particle size of the catalyst was controlled by the preparation conditions of microemulsions, regardless of palladium content. The catalyst prepared at the palladium concentration of 1.0 mol/l had the smallest palladium particles, and exhibited the highest activity. In the case of the microemulsion method, some of the palladium particles were wholly or partially embedded in the support. Nevertheless, the catalysts have exhibited an extremely high activity, because the specific activity of palladium was much higher than that in the case of the impregnated method. Furthermore, the activity of the catalyst prepared by the microemulsion method increased with increasing the amount of palladium exposed to the surface of the support.
| Original language | English |
|---|---|
| Pages (from-to) | 157-164 |
| Number of pages | 8 |
| Journal | Applied Catalysis A: General |
| Volume | 169 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - Apr 17 1998 |
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All Science Journal Classification (ASJC) codes
- Catalysis
- Process Chemistry and Technology
Cite this
Methanol synthesis from syngas over supported palladium catalysts prepared using water-in-oil microemulsion. / Kim, Won Young; Hayashi, Hiroki; Kishida, Masahiro; Nagata, Hideo; Wakabayashi, Katsuhiko.
In: Applied Catalysis A: General, Vol. 169, No. 1, 17.04.1998, p. 157-164.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Methanol synthesis from syngas over supported palladium catalysts prepared using water-in-oil microemulsion
AU - Kim, Won Young
AU - Hayashi, Hiroki
AU - Kishida, Masahiro
AU - Nagata, Hideo
AU - Wakabayashi, Katsuhiko
PY - 1998/4/17
Y1 - 1998/4/17
N2 - The hydrogenation of carbon monoxide was carried out over palladium catalysts prepared by a novel preparation method using water-in-oil microemulsion. The catalytic performance of those catalysts was compared with that of the catalysis prepared by the conventional impregnation method. The catalysts prepared by the microemulsion method were found to exhibit a much higher activity for the hydrogenation of CO than those prepared by the impregnation method. The size distribution of the palladium particles of the catalysts prepared by the microemulsion method was remarkably narrow, and the average particle size was much smaller than that of the catalysts prepared by the impregnation method. It was found that palladium particle size of the catalyst was controlled by the preparation conditions of microemulsions, regardless of palladium content. The catalyst prepared at the palladium concentration of 1.0 mol/l had the smallest palladium particles, and exhibited the highest activity. In the case of the microemulsion method, some of the palladium particles were wholly or partially embedded in the support. Nevertheless, the catalysts have exhibited an extremely high activity, because the specific activity of palladium was much higher than that in the case of the impregnated method. Furthermore, the activity of the catalyst prepared by the microemulsion method increased with increasing the amount of palladium exposed to the surface of the support.
AB - The hydrogenation of carbon monoxide was carried out over palladium catalysts prepared by a novel preparation method using water-in-oil microemulsion. The catalytic performance of those catalysts was compared with that of the catalysis prepared by the conventional impregnation method. The catalysts prepared by the microemulsion method were found to exhibit a much higher activity for the hydrogenation of CO than those prepared by the impregnation method. The size distribution of the palladium particles of the catalysts prepared by the microemulsion method was remarkably narrow, and the average particle size was much smaller than that of the catalysts prepared by the impregnation method. It was found that palladium particle size of the catalyst was controlled by the preparation conditions of microemulsions, regardless of palladium content. The catalyst prepared at the palladium concentration of 1.0 mol/l had the smallest palladium particles, and exhibited the highest activity. In the case of the microemulsion method, some of the palladium particles were wholly or partially embedded in the support. Nevertheless, the catalysts have exhibited an extremely high activity, because the specific activity of palladium was much higher than that in the case of the impregnated method. Furthermore, the activity of the catalyst prepared by the microemulsion method increased with increasing the amount of palladium exposed to the surface of the support.
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UR - http://www.scopus.com/inward/citedby.url?scp=0041526366&partnerID=8YFLogxK
U2 - 10.1016/S0926-860X(98)00007-6
DO - 10.1016/S0926-860X(98)00007-6
M3 - Article
AN - SCOPUS:0041526366
VL - 169
SP - 157
EP - 164
JO - Applied Catalysis A: General
JF - Applied Catalysis A: General
SN - 0926-860X
IS - 1
ER -