CO2 conversion to methane using Ni/SiO2 catalysts promoted by Fe, Co and Zn

Dias, Yan Resing; Perez‐Lopez, Oscar W.

doi:10.1016/j.jece.2020.104629

Cited by 40 publications

(21 citation statements)

References 73 publications

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“…In most cases, the solely catalytic active metals are deposited on a support and combined with various promoters to achieve higher activity [31][32][33][34][35]. Metal oxides such as Al 2 O 3 , SiO 2 , CeO 2 , TiO 2 , or ZrO 2 are most commonly used as support.…”

Section: Nickel-based Methanation Catalystsmentioning

confidence: 99%

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A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Strucks

Failing

Kaluza

2021

Chemie Ingenieur Technik

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This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.Today, the use of renewable energies and recycling of climate-changing gases are increasingly important. In this context, coupling of methanation with small, decentralized CO 2 sources such as biogas plants provides one possibility. However, fluctuating availability of renewables for hydrogen production in combination with small storage volumes result in an enhanced demand for dynamic process operation. This leads to new research challenges with respect to the required catalysts and the overall process design. To draw reliable conclusions about the catalytic performance under dynamic process operation, the mechanism of the methanation reaction as well as typical deactivation procedures of the catalyst applied under steady-state conditions have to be reviewed thoroughly.

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Section: Nickel-based Methanation Catalystsmentioning

confidence: 99%

“…In case of Ni/Al 2 O 3 catalysts applied in methanation, dispersed nickel accelerates the loss of Al 2 O 3 surface. [52,59,60] For those reasons, recent studies investigate the influence of various promoters to reduce sintering of both the catalytic active phase and the support materials [31,[61][62][63][64].…”

Section: Sinteringmentioning

confidence: 99%

A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Strucks

Failing

Kaluza

2021

Chemie Ingenieur Technik

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show abstract

“…It has been widely investigated as a support material for H 2 production via steam reforming of ethanol and methanol [20,21], and as a photocatalyst for splitting water to H 2 [22][23][24]. However, only a handful of literature is available where ZnO has been used as a catalyst for methanation or reverse water gas shift (RWGS) reaction [25][26][27][28][29]. Lee et al [26] investigated Fe-Zn bimetallic catalyst for synthetic natural gas production from syngas hydrogenation, and reported a very high CO conversion of ~ 98.2% with methane selectivity of 25% at 300 °C and 10 bars.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of novel ZnO–Ag cathode for CO2 electroreduction in solid oxide electrolyser

Biswas

Kulkarni

Seeber

et al. 2022

J Solid State Electrochem

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CO2 and steam/CO2 electroreduction to CO and methane in solid oxide electrolytic cells (SOEC) has gained major attention in the past few years. This work evaluates, for the very first time, the performance of two different ZnO–Ag cathodes: one where ZnO nanopowder was mixed with Ag powder for preparing the cathode ink (ZnOmix–Ag cathode) and the other one where Ag cathode was infiltrated with a zinc nitrate solution (ZnOinf –Ag cathode). ZnOmix–Ag cathode had a better distribution of ZnO particles throughout the cathode, resulting in almost double CO generation while electrolysing both dry CO2 and H2/CO2 (4:1 v/v). A maximum overall CO2 conversion of 48% (in H2/CO2) at 1.7 V and 700 °C clearly indicated that as low as 5 wt% zinc loading is capable of CO2 electroreduction. It was further revealed that for ZnOinf –Ag cathode, most of CO generation took place through RWGS reaction, but for ZnOmix–Ag cathode, it was the synergistic effect of both RWGS reaction and CO2 electrolysis. Although ZnOinf –Ag cathode produced trace amount of methane at higher voltages, with ZnOmix–Ag cathode, there was absolutely no methane. This seems to be due to strong electronic interaction between Zn and Ag that might have suppressed the catalytic activity of the cathode towards methanation.

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“…Another unresolved problem is the determination of the nature of the active centers in Ni-based catalysts, which participate in the CO 2 methanation process [22,23]. Initially, it was thought, which is still often claimed today, that the only active phase is metallic nickel (Ni 0 ) [24][25][26].…”

Section: Introductionmentioning

confidence: 99%

Cold Plasma Synthesis and Testing of NiOX-Based Thin-Film Catalysts for CO2 Methanation

et al. 2021

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An essential problem in managing CO2 and transforming it into methane as a useful fuel is the quest for adequately efficient and cheap catalysts. Another condition is imposed by the new designs of structured reactors, which require catalysts in the form of the thinnest possible films. The aim of this work was to produce Ni-based thin-film catalysts by the cold plasma deposition method (PECVD) from a volatile metal complex (Ni(CO)4) and to study their structure and catalytic properties in the CO2 methanation process. We tested three basic types of films: as-deposited, calcined in Ar, and calcined in air. The nanostructure and molecular structure of the films were investigated by electron microscopy (SEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS). The catalytic activity was evaluated in the methanation process (CO2 + H2), which was performed in a tubular reactor operating in the temperature range of 300–400 °C. The films calcined in air showed the highest activity in this process but behaved unstably. However, their regeneration by recalcination in air restored the initial catalytic activity. An important conclusion emerged from the obtained results, namely that the active phase in the tested films is Ni3+ (most likely in the form of Ni2O3), contrary to the common opinion that this phase is metallic Ni0. In our case, Ni0 quenches the catalytic activity.

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CO2 conversion to methane using Ni/SiO2 catalysts promoted by Fe, Co and Zn

Cited by 40 publications

References 73 publications

A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Evaluation of novel ZnO–Ag cathode for CO2 electroreduction in solid oxide electrolyser

Cold Plasma Synthesis and Testing of NiOX-Based Thin-Film Catalysts for CO2 Methanation

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CO2 conversion to methane using Ni/SiO2 catalysts promoted by Fe, Co and Zn

Cited by 40 publications

References 73 publications

A Short Review on Ni‐Catalyzed Methanation of CO2: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

A Short Review on Ni‐Catalyzed Methanation of CO2: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

Evaluation of novel ZnO–Ag cathode for CO2 electroreduction in solid oxide electrolyser

Cold Plasma Synthesis and Testing of NiOX-Based Thin-Film Catalysts for CO2 Methanation

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A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation

A Short Review on Ni‐Catalyzed Methanation of CO₂: Reaction Mechanism, Catalyst Deactivation, Dynamic Operation