Effects of raw materials and preparation methods of catalysts on the selective hydrogenation of ethyl phenylacetate |
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Authors: | Kazuaki Ishii Fujio Mizukami Shu-ichi Niwa Makoto Toba Hirobumi Ushijima Takami Sato |
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Affiliation: | (1) Kawaken Fine Chemicals Co., Ltd., 356 Kawagoe-shi, Saitama, Japan;(2) Department of Surface Chemistry, National Institute of Materials and Chemical Research, 1-1, Higashi, 305 Tsukuba, Ibaraki, Japan |
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Abstract: | A ruthenium/tin/alumina catalyst was found to hydrogenate ethyl phenylacetate to 2-phenylethanol selectively with a high yield.
The optimum atomic ratio of ruthenium to tin was 1∶2, and the optimum metal content was about 5 and 11.75 wt% for ruthenium
and tin, respectively. The raw materials of the catalyst had a significant effect on the conversion and selectivity in the
catalytic hydrogenation. Chloride had a negative effect on catalytic activity. Washing the catalysts, which were prepared
from chloride materials, with distilled water or alkali solution had a positive effect upon catalyst activity. The catalyst
prepared from chloride-free raw materials performed the best, and the impregnation catalyst has a higher yield than the solgel
catalyst, suggesting that impregnation is a suitable procedure for this reaction. |
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Keywords: | Ethyl-phenylacetate hydrogenation impregnation 2-phenylethanol ruthenium/tin/alumina sol-gel |
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