FTIR spectroscopic study of the interaction of CO2 and CO2 + H2 over partially oxidized   catalyst

Gupta, Nandini; Kamble, V.S.; Kartha, V. B.; Iyer, R.M.; Thampi, K. Ravindranathan; Grätzel, Michaël

doi:10.1016/0021-9517(94)90020-5

Cited by 84 publications

(54 citation statements)

References 29 publications

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“…In particular, in order to lower the reaction temperature in CO2 methanation reaction, Ru/TiO2 catalysts have been used since the 1980s. Akamaru et al [57] reported that they failed to reproduce the results of Gratzel et al [58,59] using Ru/TiO2 catalysts prepared under the same experimental 4 and CO yields on pre-reduced 3%Ru/Al 2 O 3 catalyst and GHSV = 55000 h −1 , at different temperature reactions. Adapted from Garbarino et al [53].…”

Section: Rutheniummentioning

confidence: 92%

“…Catalysts 2017, 7, 59 4 of 27 A synergistic effect was recently observed by mechanically mixing Rh/γ-Al2O3 and Ni/activated carbon (Ni/AC). It appears that higher production of CH4, with respect to the single catalysts, is not due to a chemical interaction since no formation of new structures occurs when the catalysts are mixed.…”

Section: Rutheniummentioning

confidence: 99%

“…Catalysts 2017, 7, 59 2 of 27 reaction's operating mechanism, mainly due to the uncertainty in determining the intermediate compound involved in the rate determining step [10,11]. The first and most popular path considers the conversion of CO2 to CO, which, in turn, is hydrogenated to CH4 by the same mechanism involved in CO methanation.…”

Section: Introductionmentioning

confidence: 99%

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Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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CO 2 methanation is a well-known reaction that is of interest as a capture and storage (CCS) process and as a renewable energy storage system based on a power-to-gas conversion process by substitute or synthetic natural gas (SNG) production. Integrating water electrolysis and CO 2 methanation is a highly effective way to store energy produced by renewables sources. The conversion of electricity into methane takes place via two steps: hydrogen is produced by electrolysis and converted to methane by CO 2 methanation. The effectiveness and efficiency of power-to-gas plants strongly depend on the CO 2 methanation process. For this reason, research on CO 2 methanation has intensified over the last 10 years. The rise of active, selective, and stable catalysts is the core of the CO 2 methanation process. Novel, heterogeneous catalysts have been tested and tuned such that the CO 2 methanation process increases their productivity. The present work aims to give a critical overview of CO 2 methanation catalyst production and research carried out in the last 50 years. The fundamentals of reaction mechanism, catalyst deactivation, and catalyst promoters, as well as a discussion of current and future developments in CO 2 methanation, are also included.

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Section: Rutheniummentioning

confidence: 92%

Section: Rutheniummentioning

confidence: 99%

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Supported Catalysts for CO2 Methanation: A Review

et al. 2017

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“…A coverage effect (e.g., [11]) and/or a co-adsorption effect of hydrogen (e.g., [5] and [12]) is responsible for such a 17 cm-1 frequency shift. Carbon monoxide band frequencies between 2035 and 1990 cm -~ are reported in the literature for supported ruthenium catalysts exposed to carbon dioxide and hydrogen (e.g., [5,[13][14][15] and [16]). A weak infrared band located at 2119 cm -1 is observed after exposure of the titania surface to a flow of carbon monoxide.…”

Section: Identification Of Adsorbed Speciesmentioning

confidence: 96%

“…Therefore the blocking of the metal sites by (CO) a not only hinders the production of methane but also blocks the production of the surface formate ion. 16 In the next step of this experiment the feed is switched back to a carbon monoxide-free reaction mixture. The response to this concentration switch is presented in Fig.…”

Section: Formation Of the Formatementioning

confidence: 99%