Methanation of carbon dioxide on metal-promoted mesostructured silica nanoparticles

Aziz, M.A.A.; Jalil, Aishah Abdul; Triwahyono, Sugeng; Sidik, Siti Munirah

doi:10.1016/j.apcata.2014.08.022

Cited by 131 publications

(71 citation statements)

References 47 publications

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“…8A and B), the adsorption bands at 2170 and 2110 cm -1 were observed for both mZSM5 and Ni/mZSM5 catalysts, which can be assigned to the gaseous CO. A band at 1625 cm -1 was observed on mZSM5, which was assigned to atomic hydrogen. [56][57] However, in the present work, the absence of formate species suggested that it is not a possible route for CO methanation over mZSM5-based catalyst. From our previous results, it is known that high methanation activity over mZSM5 only happens at high temperature (at 723 K).…”

Section: Mechanistic Investigation Of Co Methanationcontrasting

confidence: 60%

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

et al. 2015

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Nickel-promoted mesoporous ZSM5 (Ni/mZSM5) was prepared for CO methanation. XRD, NMR and SEM analysis confirmed the structural stability of Ni/mZSM5 with coffin type morphology. The nitrogen physisorption and pyrrole adsorbed FTIR analyses indicated the presence of micro-mesoporosity and a moderate amount of basic sites on both mZSM5 and Ni/mZSM5. At 623 K, Ni/mZSM5 showed a high rate of CO conversion (141.6 μmol CO/ gcat s) and 92% CH4 yield. Ni/mZSM5 showed better catalytic performance than Ni/MSN (82.4 μmol CO/ g-cat s, 82% CH4 yield), Ni/HZSM5 (29.0 μmol CO/ g-cat s, 54.5% CH4 yield), and Ni/γ-Al2O3 (14.5 μmol CO/ g-cat s, 38.6% CH4 yield). It is noteworthy that the superior catalytic performance of Ni/mZSM5 could be attributed to the presence of both micromesoporosity and basicity, which led to a synergistic effect of Ni m etal active sites and the mZSM5 support. In situ FTIR spectroscopy showed that CO and H2 may be adsorbed on Ni metal followed by spillover to form adsorbed CO and adsorbed H on the mZSM5 surface. Then, two possible mechanisms for CO methanation were proposed. In the first mechanism, the adsorbed CO may be reacted with H2 to form CH4 and H2O. In the second mechanism, the adsorbed H may be reacted with CO to form CH4 and CO2. However, in this case, the former is the predominant pathway as the methanation reaction is favored by inhibition of the water-gas shift reaction.

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Section: Mechanistic Investigation Of Co Methanationcontrasting

confidence: 60%

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

et al. 2015

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“…At the same time, the O atom splits onto the MSN surface 8 of 28 and is stabilized in the oxygen vacancy near the metal site. Hydroxyls are formed on the MSN surface by interaction of adsorbed oxygen with atomic hydrogen, and, by reaction with another hydrogen atom, water is formed [12,124]. Then, the carbon species is hydrogenated to CH 4 .…”

Section: Silica-supported Nickelmentioning

confidence: 99%

“…However, on an areal basis, Ni/MSN exhibits the best performance. In the light of the catalytic activity tests and physico-chemical characterization results, a new, plausible pathway in the mechanism of CO 2 methanation on metal based MSNs is formulated [12,124]. Firstly, CO 2 and H 2 are adsorbed on metal sites, and subsequently dissociate to form CO, O, and H atoms and migrate on the MSN surface.…”

Section: Silica-supported Nickelmentioning

confidence: 99%

“…Recently, Aziz et al have studied such materials, promoted by Ni, for CO 2 methanation [123][124][125]. In [126] MSN (mesostructured silica nanoparticles) and Ni/MSN were prepared by sol-gel and impregnation methods.…”

Section: Silica-supported Nickelmentioning

confidence: 99%

“…In [124], various metals were loaded on MSNs (Rh, Ru, Ni, Fe, Ir, Cu, Zn, V, Cr, Mn, Al, and Zr). The catalytic performance measurements clearly indicate that surface centers containing metallic and associated basic and/or oxygen vacancy sites are responsible for the catalytic activity.…”

Section: Silica-supported Nickelmentioning

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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Tuning Zeolite Properties towards CO₂ Methanation: An Overview

et al. 2019

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This work provides a short review of the literature concerning the utilization of zeolites as supports for CO2 methanation catalysts. Indeed, the application of these materials in carbon dioxide hydrogenation into methane has led to considerably relevant performances according to the literature, being zeolite‐based catalysts more active and selective than commercial materials reported. Considering the well‐known zeolite features and the possibility to finely modulate its properties, inducing relevant changes on the adsorbed metal species and in the CO2 activation ability of the catalyst, potentially interesting catalytic properties can be generated also towards this transformation. Possible correlations between the characteristics of these materials, found as relevant for CO2 methanation, and the catalytic properties will be then presented and discussed.

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Methanation of carbon dioxide on metal-promoted mesostructured silica nanoparticles

Cited by 131 publications

References 47 publications

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

Supported Catalysts for CO2 Methanation: A Review

Tuning Zeolite Properties towards CO₂ Methanation: An Overview

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Methanation of carbon dioxide on metal-promoted mesostructured silica nanoparticles

Cited by 131 publications

References 47 publications

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

Nickel-promoted mesoporous ZSM5 for carbon monoxide methanation

Supported Catalysts for CO2 Methanation: A Review

Tuning Zeolite Properties towards CO2 Methanation: An Overview

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Product

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Tuning Zeolite Properties towards CO₂ Methanation: An Overview