Methanation of carbon dioxide on nickel(100) and the effects of surface modifiers

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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“…98,99 Peebles et al studied the methanation and dissociation of CO 2 on Ni(100). 71 Activation energies of 88.7 kJ mol À1 and 72.8-82.4 kJ mol…”

Section: Reaction Mechanismmentioning

confidence: 99%

Recent advances in catalytic hydrogenation of carbon dioxide

et al. 2011

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“…Du et al applied Ni/MCM-41 catalysts with different amount of Ni to CO 2 methanation [14]. High selectivity (96.0%) and space-time yield (STY, 91.4 g$kg -1 $h -1 ) were achieved on 3 wt-% Ni/MCM-41 at a space velocity of 5760 kg -1 $h -1 , superior to that of Ni/SiO 2 catalysts and comparable to Ru/SiO 2 catalysts [15][16][17]. The high selectivity was maintained at higher temperature (673 K) with increased space-time yield STY (633 g$kg -1 $h -1 ).…”

Section: Introductionmentioning

confidence: 97%

Methanation of carbon dioxide: an overview

Wang

Gong

2010

Front. Chem. Sci. Eng.

488

184

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Although being very challenging, utilization of carbon dioxide (CO 2 ) originating from production processes and flue gases of CO 2 -intensive sectors has a great environmental and industrial potential due to improving the resource efficiency of industry as well as by contributing to the reduction of CO 2 emissions. As a renewable and environmentally friendly source of carbon, catalytic approaches for CO 2 fixation in the synthesis of chemicals offer the way to mitigate the increasing CO 2 buildup. Among the catalytic reactions, methanation of CO 2 is a particularly promising technique for producing energy carrier or chemical. This article focuses on recent developments in catalytic materials, novel reactors, and reaction mechanism for methanation of CO 2 .

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“…Such recent studies have included CO 2 hydrogenation over Ni(100) 1 2 hydrogenation is much more selective toward product formation than is CO hydrogenation, with CH 4 generally being the only hydrocarbon product for the former.…”

Section: Introductionmentioning

confidence: 99%

An infrared study of the hydrogenation of carbon dioxide on supported rhodium catalysts

Henderson¹,

Worley²

1985

J. Phys. Chem.

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An infrared study of the methanation of C02 on supported Rh catalysts has been performed. This reaction has been shown to occur over these catalysts with higher turnover frequency at a given temperature and Rh loading than does the methanation of CO. A support effect has been demonstrated for the reaction over the supported Rh catalysts (Ti02 > A1203 > Si02 in reactivity). A key surface intermediate during the methanation reaction is a carbonyl hydride species, as evidenced by a prominent infrared band in the 2020-2040-cm"1 11region which shifts by 5-10 cm"1 when D2 is substituted for H2 in the reaction mixture. This carbonyl hydride species can be produced in the absence of H2 by migration of H from the support to Rh. The dissociation of C02 on supported Rh has been shown to be enhanced by the presence of H2 and impurity boron.

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Methanation of carbon dioxide on nickel(100) and the effects of surface modifiers

Cited by 193 publications

References 9 publications

Recent advances in catalytic hydrogenation of carbon dioxide

Recent advances in catalytic hydrogenation of carbon dioxide

Methanation of carbon dioxide: an overview

An infrared study of the hydrogenation of carbon dioxide on supported rhodium catalysts

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