Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane

Gnanakumar, Edwin S.; Chandran, Narendraraj; Kozhevnikov, Ivan V.; Grau-Atienza, Aida; Ramos‐Fernández, Enrique V.; Sepúlveda-Escribano, A.; Shiju, N. Raveendran

doi:10.1016/j.ces.2018.08.038

Cited by 60 publications

(29 citation statements)

References 42 publications

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“…The main peak appears at 779. 4 support. In addition, the intensity ratio between cobalt and support particles (I Co /I Al or I Co /I Ti ) is the largest among the three catalysts (see Table S3).…”

Section: Catalyst Testingmentioning

confidence: 98%

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti₂AlC MAX Phase

et al. 2020

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MAX (M n + 1 AX n) phases are layered carbides or nitrides with a high thermal and mechanical bulk stability. Recently, it was shown that their surface structure can be modified to form a thin non-stoichiometric oxide layer, which can catalyze the oxidative dehydrogenation of butane. Here, the use of a Ti 2 AlC MAX phase as a support for cobalt oxide was explored for the dry reforming of butane with CO 2 , comparing this new catalyst to more traditional materials. The catalyst was active and selective to synthesis gas. Although the surface structure changed during the reaction, the activity remained stable. Under the same conditions, a titania-supported cobalt oxide catalyst gave low activity and stability due to the agglomeration of cobalt oxide particles. The Co 3 O 4 /Al 2 O 3 catalyst was active, but the acidic surface led to a faster deactivation. The less acidic surface of the Ti 2 AlC was better at inhibiting coke formation. Thanks to their thermal stability and acid-base properties, MAX phases are promising supports for CO 2 conversion reactions.

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Section: Catalyst Testingmentioning

confidence: 98%

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti₂AlC MAX Phase

et al. 2020

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“…[39,122] A rational design of Nibased methanation catalysts with high activity at low temperatures, good redox properties, and better stability at reaction temperatures are still required for industrial applications. [121] Gnanakumar et al [123] prepared nickelÀ niobia catalyst 40NiÀ Nb 2 O 5 -700 with CO 2 conversion of 92 % and CH 4 selectivity of 99 % and catalyst showed stable activity during a continuous test of 50 h. According to their results the strong acid sites seemed to be more favorable for the CO2 hydrogenation, however they could not find the direct reason for this. Several studies observed promotional role of transition metals on catalytic performance and stability of NiÀ Al 2 O 3 .…”

Section: Challenges In Catalytic Co 2 Methanationmentioning

confidence: 99%

Recent Developments in the Modelling of Heterogeneous Catalysts for CO₂ Conversion to Chemicals

et al. 2020

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Density functional theory (DFT) of the CO2 behavior on the catalyst surface provides valuable insights about the C=O bond activation, information about adsorption and dissociation of CO2, understanding the elementary steps involved in the mechanism of the CO2 hydrogenation reaction. Nowadays, DFT computational studies for the catalytic hydrogenation of CO2 are becoming very popular. Therefore, this article is focused on a comprehensive review of the DFT studies in thermocatalytic hydrogenation of CO2 at the gas‐surface interface and discusses three aspects: 1) processes taking place on the surfaces and facets of transition metal heterogeneous catalysts, 2) adsorption of CO2 on surfaces of different transition metals; 3) current understanding of reaction mechanisms taking place on the catalytic surface for the production of different compounds. A detailed schematic overview of the possible CO2 hydrogenation mechanisms and DFT simulations presented here will enhance the current understanding of the CO2 catalytic hydrogenation.

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“…Before reduction, the diffraction peaks at 37.2, 43.3, and 62.9 • were attributed to NiO (PDF no. , as shown in Figure 7a [1,26]. The diffraction peaks at 44.5, 51.8, and 76.4 • corresponded to the Ni metal (PDF no.…”

Section: The Results Of Co 2 -Tpd On Ni-xsi/zro 2 Catalystsmentioning

confidence: 94%

“…Moreover, the properties of support play an important role in catalytic performance including the surface properties, the ability to disperse the active phase, and metal-support interaction. It is crucial to choose an appropriate support in preparing effective catalysts [26,27]. Many different metal oxides, such as CeO 2 [28], MgO [29], Al 2 O 3 [30], TiO 2 [31,32], SiO 2 [9,33], ZrO 2 [34][35][36][37][38], and Y 2 O 3 [39], have been used as support to promote CO 2 methanation.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Si on CO2 Methanation over Ni-xSi/ZrO2 Catalysts at Low Temperature

Wang

Zhao

et al. 2021

Catalysts

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A series of Ni-xSi/ZrO2 (x = 0, 0.1, 0.5, 1 wt%, the controlled contents of Si) catalysts with a controlled nickel content of 10 wt% were prepared by the co-impregnation method with ZrO2 as support and Si as a promoter. The effect of different amounts of Si on the catalytic performance was investigated for CO2 methanation with the stoichiometric H2/CO2 molar ratio (4/1). The catalysts were characterized by BET, XRF, H2-TPR, H2-TPD, H2-chemisorption, CO2-TPD, XRD, TEM, XPS, and TG-DSC. It was found that adding the appropriate amount of Si could improve the catalytic performance of Ni/ZrO2 catalyst at a low reaction temperature (250 °C). Among all the catalysts studied, the Ni-0.1Si/ZrO2 catalyst showed the highest catalytic activity, with H2 and CO2 conversion of 73.4% and 72.5%, respectively and the yield of CH4 was 72.2%. Meanwhile, the catalyst showed high stability and no deactivation within a 10 h test. Adding the appropriate amount of Si could enhance the interaction between Ni and ZrO2, and increase the Ni dispersion, the amounts of active sites including surface Ni0, oxygen vacancies, and strong basic sites on the catalyst surface. These might be the reasons for the high activity and selectivity of the Ni-0.1Si/ZrO2 catalyst.

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Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane

Cited by 60 publications

References 42 publications

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti₂AlC MAX Phase

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti₂AlC MAX Phase

Recent Developments in the Modelling of Heterogeneous Catalysts for CO₂ Conversion to Chemicals

The Effect of Si on CO2 Methanation over Ni-xSi/ZrO2 Catalysts at Low Temperature

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Highly efficient nickel-niobia composite catalysts for hydrogenation of CO2 to methane

Cited by 60 publications

References 42 publications

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti2AlC MAX Phase

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti2AlC MAX Phase

Recent Developments in the Modelling of Heterogeneous Catalysts for CO2 Conversion to Chemicals

The Effect of Si on CO2 Methanation over Ni-xSi/ZrO2 Catalysts at Low Temperature

Contact Info

Product

Resources

About

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti₂AlC MAX Phase

Butane Dry Reforming Catalyzed by Cobalt Oxide Supported on Ti₂AlC MAX Phase

Recent Developments in the Modelling of Heterogeneous Catalysts for CO₂ Conversion to Chemicals