Characteristics of suspended Ru/carbon catalyst for 2-propanol dehydrogenation applicable to chemical heat pump.
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概要
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Liquid-phase dehydrogenation of (CH<SUB>3</SUB>)<SUB>2</SUB>CHOH, (CH<SUB>3</SUB>)<SUB>2</SUB>CHOD and (CH<SUB>3</SUB>)<SUB>2</SUB>CDOH was performed at 82.4 °C with high activity and selectivity under refluxing conditions by heating the suspended solution at 100 °C with a carbon-supported ruthenium catalyst. Since the mixture of (CH<SUB>3</SUB>)<SUB>2</SUB>CHOH and (CD<SUB>3</SUB>)<SUB>2</SUB>CO(10 vol%) gave 2-propan-1,1,1,3,3,3-<I>d</I><SUB>6</SUB>-ol at a rate 7.15-times higher than that of hydrogen evolution, hydrogen transfer from 2-propanol to acetone ought to proceed simultaneously with dehydrogenation. Relatively small kinetic isotope effects of 1.69 and 1.57, obtained from (CH<SUB>3</SUB>)<SUB>2</SUB>CHOD and (CH<SUB>3</SUB>)<SUB>2</SUB>CDOH, respectively, on the Ru/carbon catalyst for dehydrogenation, suggests that the slowest step is not a splitting of the methine C–H bond but, rather, the formation of molecular hydrogen from surface hydrogen species. Further improvements regarding easy desorption of both acetone and hydrogen are necessary for the catalyst most suitable for 2-propanol dehydrogenation in a chemical heat pump system.
- 公益社団法人 日本化学会の論文
著者
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Saito Yasukazu
Department Of Industrial Chemistry Faculty Of Engineering The University Of Tokyo
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Suzuki Minoru
Department Of Applied Biological Chemistry Graduate School Of Agricultural And Life Sciences The Uni
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Kawamura Tokiji
Department Of Applied Chemistry Faculty Of Engineering The University Of Tokyo
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Yamashita Masaru
Department Of Agricultural Chemistry Faculty Of Agriculture Meijo University
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