Effects of SiO2-doping on high-surface-area Ru/TiO2 catalysts for the selective CO methanation

Cisneros, Sebastián; Chen, Shilong; Diemant, Thomas; Bansmann, Joachim; Abdel‐Mageed, Ali M.; Goepel, Michael; Olesen, Sine Ellemann; Welter, Eike S.; Parlinska-Wojtan, Magdalena; Gläser, Roger; Chorkendorff, Ib; Behm, R. Jürgen

doi:10.1016/j.apcatb.2020.119483

Cited by 31 publications

(16 citation statements)

References 76 publications

(120 reference statements)

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“…It has been reported that the residual chlorine ions in the catalyst have little influence on the CO‐SMET activity, but they can dramatically suppress CO 2 adsorption/dissociation, thereby improving the CO‐SMET selectivity 5 . Our experiment also yielded similar results.…”

Section: Resultssupporting

confidence: 82%

“…The high-resolution TEM (HRTEM) (D), and energy dispersive X-ray spectroscopy (EDS) elemental mapping (E,F) images of the Ni-0.05Zr/NA catalyst It has been reported that the residual chlorine ions in the catalyst have little influence on the CO-SMET activity, but they can dramatically suppress CO 2 adsorption/ dissociation, thereby improving the CO-SMET selectivity. 5 Our experiment also yielded similar results. As shown in Figure S4, the Ni-0.05Zr/NA-ZrO(NO 3 ) 2 catalyst, which was prepared by employing ZrO(NO 3 ) 2 instead of ZrOCl 2 Á8H 2 O as the Zr precursor, showed dramatically decreased catalytic performance.…”

Section: Resultssupporting

confidence: 82%

“…3 Among various purification methods, CO selective methanation (CO-SMET) is recognized to be the most effective approach for CO deep removal in H 2 -rich gas. 4,5 Actually, CO-SMET (Equation 1) is mainly accompanied with the Dan Ping and Yinbei Wan contributed equally to this work. side reactions of CO 2 methanation reaction (Equation 2) and reverse water gas shift (RWGS, Equation 3) reaction.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, it is still necessary to conduct an additional purification step to decrease the concentration of CO to below 10 ppm in H 2 ‐rich reformed gas 3 . Among various purification methods, CO selective methanation (CO‐SMET) is recognized to be the most effective approach for CO deep removal in H 2 ‐rich gas 4,5 . Actually, CO‐SMET (Equation ) is mainly accompanied with the side reactions of CO 2 methanation reaction (Equation ) and reverse water gas shift (RWGS, Equation ) reaction.…”

Section: Introductionmentioning

confidence: 99%

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Zr‐promoted nickel‐rich spinel‐supported Ni catalysts with enhanced performance for selective CO methanation

Ping

Wan

Zhao

et al. 2022

Intl J of Energy Research

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CO selective methanation (CO-SMET) is an efficient hydrogen purification technology for proton exchange membrane fuel cells. The development of nonnoble metal-based catalysts is quite essential and imperative for CO-SMET and has received considerable interest. Herein, a Zr-promoted nickel-rich spinel-supported Ni catalyst (Ni-ZrO 2 /NiAl 2 O 4 ) was acquired by an epoxidedriven sol-gel process and associated co-impregnation method. The usage of ZrO 2 could enhance the reducibility of the Ni oxides and promote the formation of small Ni particles size, then effectively increase the sorption capacities for both H 2 and CO and facilitate the CO dissociation from catalyst surfaces.All these endowed the catalyst with excellent catalytic performance for CO-SMET, which could lower the CO outlet level to less than 10 ppm with the selectivity higher than 50% within a large temperature window (185 C-255 C).Additionally, the catalyst was highly stable with no obvious carbon deposition or performance degradation during the long-term stability test. This work offers a new technical route to build highly efficient nickel-rich spinelsupported catalysts in the production of high-quality hydrogen.

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Section: Resultssupporting

confidence: 82%

Section: Resultssupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Zr‐promoted nickel‐rich spinel‐supported Ni catalysts with enhanced performance for selective CO methanation

Ping

Wan

Zhao

et al. 2022

Intl J of Energy Research

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“…Here, we need to underline that different from the behavior of supported Ru catalysts in CO 2 reduction, these catalysts (Ru/MO x ) show different behavior in the methanation of CO in CO/H 2 gas mixtures or in CO/CO 2 /H 2 mixtures. In the presence of CO, modest deactivation can be observed, in particular for the reducible oxides such as Ru/TiO 2 catalysts [70,[72][73][74]. This effect is also observable on Ru NPs (1-3 nm) supported on non-reducible oxides in the presence of water vapor in CO/CO 2 /H 2 feed gases with limited CO partial pressures (0.01%CO) [75][76][77].…”

Section: Ru-based Catalystsmentioning

confidence: 99%

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Abdel‐Mageed

Wohlrab

2021

Catalysts

Self Cite

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The valorization of carbon dioxide by diverting it into useful chemicals through reduction has recently attracted much interest due to the pertinent need to curb increasing global warming, which is mainly due to the huge increase of CO2 emissions from domestic and industrial activities. This approach would have a double benefit when using the green hydrogen generated from the electrolysis of water with renewable electricity (solar and wind energy). Strategies for the chemical storage of green hydrogen involve the reduction of carbon dioxide to value-added products such as methane, syngas, methanol, and their derivatives. The reduction of CO2 at ambient pressure to methane or carbon monoxide are rather facile processes that can be easily used to store renewable energy or generate an important starting material for chemical industry. While the methanation pathway can benefit from existing infrastructure of natural gas grids, the production of syngas could be also very essential to produce liquid fuels and olefins, which will also be in great demand in the future. In this review, we focus on the recent advances in the thermocatalytic reduction of CO2 at ambient pressure to basically methane and syngas on the surface of supported metal nanoparticles, single-atom catalyst (SACs), and supported bimetallic alloys. Basically, we will concentrate on activity, selectivity, stability during reaction, support effects, metal-support interactions (MSIs), and on some recent approaches to control and switch the CO2 reduction selectivity between methane and syngas. Finally, we will discuss challenges and requirements for the successful introduction of these processes in the cycle of renewable energies. All these aspects are discussed in the frame of sustainable use of renewable energies.

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Innovative Ru Catalyst Adopting for Improving Interfacial and Mechanical Properties on CF Fabric Reinforced ENB Composites

et al. 2022

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Effects of SiO2-doping on high-surface-area Ru/TiO2 catalysts for the selective CO methanation

Cited by 31 publications

References 76 publications

Zr‐promoted nickel‐rich spinel‐supported Ni catalysts with enhanced performance for selective CO methanation

Zr‐promoted nickel‐rich spinel‐supported Ni catalysts with enhanced performance for selective CO methanation

Review of CO2 Reduction on Supported Metals (Alloys) and Single-Atom Catalysts (SACs) for the Use of Green Hydrogen in Power-to-Gas Concepts

Innovative Ru Catalyst Adopting for Improving Interfacial and Mechanical Properties on CF Fabric Reinforced ENB Composites

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