Effective thermocatalytic carbon dioxide methanation on Ca-inserted NiTiO3 perovskite

Yeon, Jeong; Park, No‐Kuk; Seo, Myung Won; Lee, Doyeon; Ryu, Ho-Jung; Kang, Misook

doi:10.1016/j.fuel.2020.117624

Cited by 39 publications

(14 citation statements)

References 69 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The 10% Ni/CaTiO 3 catalyst exhibited CO and CO 2 methanation activity superior to 10% Ni/Al 2 O 3 , due to the perovskite oxide's exceptional stability, increased support basicity and the limited interaction between Ni particles and the CaTiO 3 support. Do et al [84] used Ca as a promoter in order to substitute part of the A-site cations in the NiTiO 3 lattice and the whole perovskite was loaded on γ-Al 2 O 3 . They performed extensive characterizations on the composite materials and concluded that upon 5% molar substitution of Ni 2+ with Ca 2+ , the catalytic activity could be maximized.…”

Section: Calcium (Ca)mentioning

confidence: 99%

See 1 more Smart Citation

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

et al. 2020

View full text Add to dashboard Cite

CO2 methanation has great potential for the better utilization of existing carbon resources via the transformation of spent carbon (CO2) to synthetic natural gas (CH4). Alkali and alkaline earth metals can serve both as promoters for methanation catalysts and as adsorbent phases upon the combined capture and methanation of CO2. Their promotion effect during methanation of carbon dioxide mainly relies on their ability to generate new basic sites on the surface of metal oxide supports that favour CO2 chemisorption and activation. However, suppression of methanation activity can also occur under certain conditions. Regarding the combined CO2 capture and methanation process, the development of novel dual-function materials (DFMs) that incorporate both adsorption and methanation functions has opened a new pathway towards the utilization of carbon dioxide emitted from point sources. The sorption and catalytically active phases on these types of materials are crucial parameters influencing their performance and stability and thus, great efforts have been undertaken for their optimization. In this review, we present some of the most recent works on the development of alkali and alkaline earth metal promoted CO2 methanation catalysts, as well as DFMs for the combined capture and methanation of CO2.

show abstract

Section: Calcium (Ca)mentioning

confidence: 99%

“…Plausible mechanism for CO 2 methanation over the Ca-NiTiO 3 /γ-Al 2 O 3 catalysts. Reproduced with permission from ref [84]…”

mentioning

confidence: 99%

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

et al. 2020

View full text Add to dashboard Cite

show abstract

“…These modifications led to a reaction mechanism with formate species as intermediates (no CO) accompanied by a remarkable decrease of the activation energy. Do et al [91] studied the effect of Ca incorporation (0, 1.0, 3.0, 5.0, 7.0 and 10.0 %mol) to perovskite NiTiO 3 (containing ~11 wt% Ni) loaded by impregnation on γ-Al 2 O 3 . Ca incorporation favored the nickel dispersion, boosted the CO 2 adsorption capacity and improved the textural properties, which resulted not only in a remarkable increase of the performances but also in a significant stability under reaction conditions for 10 days.…”

Section: Trimetallic Al 2 O 3 -Supported Catalysts and Compositesmentioning

confidence: 99%

Promising Catalytic Systems for CO2 Hydrogenation into CH4: A Review of Recent Studies

et al. 2020

View full text Add to dashboard Cite

The increasing utilization of renewable sources for electricity production turns CO2 methanation into a key process in the future energy context, as this reaction allows storing the temporary renewable electricity surplus in the natural gas network (Power-to-Gas). This kind of chemical reaction requires the use of a catalyst and thus it has gained the attention of many researchers thriving to achieve active, selective and stable materials in a remarkable number of studies. The existing papers published in literature in the past few years about CO2 methanation tackled the catalysts composition and their related performances and mechanisms, which served as a basis for researchers to further extend their in-depth investigations in the reported systems. In summary, the focus was mainly in the enhancement of the synthesized materials that involved the active metal phase (i.e., boosting its dispersion), the different types of solid supports, and the frequent addition of a second metal oxide (usually behaving as a promoter). The current manuscript aims in recapping a huge number of trials and is divided based on the support nature: SiO2, Al2O3, CeO2, ZrO2, MgO, hydrotalcites, carbons and zeolites, and proposes the main properties to be kept for obtaining highly efficient carbon dioxide methanation catalysts.

show abstract

“…An optimum Mg loading is also found for Ni on different supports [ 25 , 26 , 28 ]. The claimed benefits are not only the increased basicity and CO 2 chemisorption [ 25 , 29 , 30 ] but also the enhancement of Ni dispersion and resistance to sintering [ 28 ] and the creation of oxygen vacancies on the support [ 31 , 32 ].…”

Section: Introductionmentioning

confidence: 99%

Promotion of Ru or Ni on Alumina Catalysts with a Basic Metal for CO2 Hydrogenation: Effect of the Type of Metal (Na, K, Ba)

et al. 2022

View full text Add to dashboard Cite

Ru and Ni on alumina catalysts have been promoted with a 10 wt% of alkali metal (K or Na) or alkaline earth metal (Ba) and tested in CO2 methanation. For the catalyst consisting of Ni and Ba, the variation of Ba loading while keeping Ni loading constant was studied. The promotion in terms of enhanced CH4 yield was found only for the addition of barium to 15 wt% Ni/Al2O3. In contrast, K and Na addition increased the selectivity to CO while decreasing conversion. For the Ru-based catalyst series, no enhancement in conversion or CH4 yield was attained by any of the alkaline metals. CO2 temperature-programed desorption (CO2-TPD) revealed that the amount of chemisorbed CO2 increased significantly after the addition of the base metal. The reactivity of COx ad-species for each catalyst was assessed by temperature-programed surface reaction (TPSR). The characterization revealed that the performance in the Sabatier reaction was a result of the interplay between the amount of chemisorbed CO2 and the reactivity of the COx ad-species, which was maximized for the (10%Ba)15%Ni/Al2O3 catalyst.

show abstract

Effective thermocatalytic carbon dioxide methanation on Ca-inserted NiTiO3 perovskite

Cited by 39 publications

References 69 publications

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

The Role of Alkali and Alkaline Earth Metals in the CO2 Methanation Reaction and the Combined Capture and Methanation of CO2

Promising Catalytic Systems for CO2 Hydrogenation into CH4: A Review of Recent Studies

Promotion of Ru or Ni on Alumina Catalysts with a Basic Metal for CO2 Hydrogenation: Effect of the Type of Metal (Na, K, Ba)

Contact Info

Product

Resources

About