CO2 hydrogenation to ethanol over promoted Rh/SiO2 catalysts

Kusama, Hitoshi; Okabe, Kiyomi; Sayama, Kazuhiro; Arakawa, Hironori

doi:10.1016/0920-5861(95)00246-4

Cited by 143 publications

(102 citation statements)

References 9 publications

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“…250,251 An alternative route for improving the yield of ethanol from CO 2 is based on an observation that syngas can be converted into ethanol over Rh/SiO 2 catalyst with methane as another main product. 244 However, by adding various metal oxide to the catalysts, CO 2 conversion and selectivity to alcohols could be increased. 244 The addition of Li to Rh/SiO 2 yields an ethanol selectivity of 15.5% and a CO 2 conversion of 7.0%.…”

Section: Synthesis Of Higher Alcoholsmentioning

confidence: 99%

“…244 However, by adding various metal oxide to the catalysts, CO 2 conversion and selectivity to alcohols could be increased. 244 The addition of Li to Rh/SiO 2 yields an ethanol selectivity of 15.5% and a CO 2 conversion of 7.0%. In situ FTIR analysis suggests that CO 2 is hydrogenated to ethanol via CO intermediate, the amount of which is increased by increasing Li loading.…”

Section: Synthesis Of Higher Alcoholsmentioning

confidence: 99%

“…16 Hence, a catalyst that is active for both reactions under the similar condition would be favorable for the overall reaction, for example, Fe-based and Rh-based catalysts. [243][244][245][246][247][248][249] Catalysts for the formation of ethanol require active centers for promoting partial reduction of CO 2 to CO, C-C bond formation, and OH group insertion. 247,249 Fe-based FT catalysts mixed with Cu-based catalysts have the functions of partial reduction of CO 2 to CO and ethanol synthesis.…”

Section: Synthesis Of Higher Alcoholsmentioning

confidence: 99%

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Recent advances in catalytic hydrogenation of carbon dioxide

et al. 2011

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Owing to the increasing emissions of carbon dioxide (CO 2 ), human life and the ecological environment have been affected by global warming and climate changes. To mitigate the concentration of CO 2 in the atmosphere various strategies have been implemented such as separation, storage, and utilization of CO 2 . Although it has been explored for many years, hydrogenation reaction, an important representative among chemical conversions of CO 2 , offers challenging opportunities for sustainable development in energy and the environment. Indeed, the hydrogenation of CO 2 not only reduces the increasing CO 2 buildup but also produces fuels and chemicals. In this critical review we discuss recent developments in this area, with emphases on catalytic reactivity, reactor innovation, and reaction mechanism. We also provide an overview regarding the challenges and opportunities for future research in the field (319 references).

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Section: Synthesis Of Higher Alcoholsmentioning

confidence: 99%

Section: Synthesis Of Higher Alcoholsmentioning

confidence: 99%

Section: Synthesis Of Higher Alcoholsmentioning

confidence: 99%

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Recent advances in catalytic hydrogenation of carbon dioxide

et al. 2011

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“…Ethanol has also been produced by the hydrogenation of CO 2 . 154 This fuel is attractive because it has a somewhat higher energy density than methanol and it is not as toxic. However, the selectivity for ethanol production is generally low (<40%).…”

Section: Hydrogenation Reactionsmentioning

confidence: 99%

Catalysis Research of Relevance to Carbon Management: Progress, Challenges, and Opportunities

et al. 2001

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“…The CO 2 generated is recovered in a storage vessel and is regenerated in EtOH in a hydrocarbon regenerator by a hydrogenation process using H 2 , which is generated from water electrolysis or thermochemically from production processes of CO 2 -free power plants. EtOH production from CO 2 and H 2 has been demonstrated using a Rh/SiO 2 catalyst (Kusama et al, 1996) and a Cu-based catalyst (Inui et al, 1999). Regenerated hydrocarbons are reused cyclically in the vehicles.…”

Section: Carbon Recycle H 2 Systemmentioning

confidence: 99%

Experimental Study on Fuel Reforming with Carbon Dioxide Recovery for Vehicle Use

Kato

Otsuka

Ryu

2009

J. Chem. Eng. Japan

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Fuel reforming with carbon dioxide recovery for hydrogen supply to fuel cell vehicles is discussed experimentally. Ethanol water solution was chosen as the fuel, and carbonation of calcium oxide was performed for carbon dioxide recovery. A packed bed reactor containing calcium oxide and a reforming catalyst was used to produce hydrogen from the ethanol solution under 0.10-0.30 MPa at 450-550 • C. Thus, the production of hydrogen with a concentration of over 95% and with less than 0.1% of ethanol, carbon dioxide, and carbon monoxide was demonstrated. On the basis of the experimental results, the hydrogen storage capacity of state of the reforming reactor for a fuel cell vehicle was evaluated and compared with that of other hydrogen storage methods. In comparison with pressurized and liquid hydrogen cylinder storages, the reforming system was more advantageous from the standpoint of storage density, and the need for a compression system explosion risk. The reforming was also found to be better than metal hydrides from the standpoint of material cost. It is expected that a carbon recycle hydrogen system based on the proposed reforming system using ethanol as the fuel can be effectively used for hydrogen storage and transportation for fuel cell vehicles.

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CO2 hydrogenation to ethanol over promoted Rh/SiO2 catalysts

Cited by 143 publications

References 9 publications

Recent advances in catalytic hydrogenation of carbon dioxide

Recent advances in catalytic hydrogenation of carbon dioxide

Catalysis Research of Relevance to Carbon Management: Progress, Challenges, and Opportunities

Experimental Study on Fuel Reforming with Carbon Dioxide Recovery for Vehicle Use

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