Catalytic performance of Ni catalysts supported on CeO2 with different morphologies for low-temperature CO2 methanation

Jomjaree, Thapanee; Sintuya, Paweennut; Srifa, Atthapon; Koo‐Amornpattana, Wanida; Kiatphuengporn, Sirapassorn; Assabumrungrat, Suttichai; Sudoh, Masao; Watanabe, Ryo; Fukuhara, Choji; Ratchahat, Sakhon

doi:10.1016/j.cattod.2020.08.010

Cited by 75 publications

(38 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With 10 wt% nickel content, Ni/CeO 2 catalysts supported on CeO 2 nanoparticle, CeO 2 nanorod, CeO 2 nanocube, were marked as Ni/CeO 2 ‐P, Ni/CeO 2 ‐R, and Ni/CeO 2 ‐C, respectively. Furthermore, for comparison with the supported catalysts with industrial‐scale synthesis, the CeO 2 ‐P was chosen as the support of Ni/CeO 2 catalyst prepared by impregnation method as follows: 0.165 g of Ni(NO 3 ) 2 ·6H 2 O was dissolved into 20 mL of deionized water and then mixed with 0.300 g of bulk CeO 2 support and stirred for 6 hr; using rotary evaporator to gradually remove water, the sample powder was left to completely dry overnight followed by calcination at 600 °C for 4 hr, 28 which marked as Ni/CeO 2 ‐I.…”

Section: Methodsmentioning

confidence: 99%

Ni/CeO₂ prepared by improved polyol method for DRM with highly dispersed Ni

Qin

Chen

et al. 2021

Greenhouse Gases

View full text Add to dashboard Cite

Dry reforming of methane (DRM) of Ni‐based catalysts is a hot method to solve greenhouse gas problems. The improved polyol method could overcome the disadvantage of Ni agglomerate sintering by the impregnation method. In this work, Ni/CeO2 catalysts were prepared by an improved polyol method with different CeO2 support and applied for methane dry reforming, which showed excellent catalytic activity and stability. The X‐ray power diffraction (XRD), transmission electron microscopy (TEM), X‐ray photoelectron spectra (XPS), H2 temperature‐programmed reduction (H2‐TPR) were used to study the composition of Ni species, the Ni‐CeO2 interaction, and Ni dispersion, while textural properties, oxygen vacancy, and the behavior of CO2 adsorption and activity were research by N2 adsorption and desorption, Raman and CO2‐TPD. There in, Ni/CeO2‐R showed excellent catalytic activity (CH4 and CO2 conversion: 61.8% and 96.5%; H2/CO radio: 0.93) and remained stable after the 50‐hr stability test. Meanwhile, the formation and graphitization of deposited carbon were observed and studied by XRD, Raman, TG/DTA, and TEM, and the cause of the deactivation of the catalyst was analyzed. This work studied and demonstrated the advantages of the improved polyol method and the differences between different CeO2 supports and provided a new idea for the construction of the catalyst for methane dry reforming. © 2021 Society of Chemical Industry and John Wiley & Sons, Ltd.

show abstract

Section: Methodsmentioning

confidence: 99%

Ni/CeO₂ prepared by improved polyol method for DRM with highly dispersed Ni

Qin

Chen

et al. 2021

Greenhouse Gases

View full text Add to dashboard Cite

show abstract

“…Recycling CO 2 to produce fuels such as methane, methanol, dimethyl ether, or higher alcohols could be a convenient alternative that has not been thoroughly investigated yet. Research in this field may leads to reduced consumption of carbon-based fossil fuels, avoiding the introduction of new CO 2 to the atmosphere [2,3]. The hydrogenation of CO 2 to produce methane and water, (CO 2 + 4H 2 → CH 4 + 2H 2 O), known as Sabatier reaction or methanation, is exothermic (∆H • = -164 kJ mol −1 ), and thermodynamically favored (∆G 0 = -131 kJ/mol), but with kinetic barriers that require the presence of a catalyst.…”

Section: Introductionmentioning

confidence: 99%

“…CeO 2 can be prepared in different nano-shapes, such as nano-rod, nano-cubic or nanooctahedra. The morphology affects the catalytic performances of Me/CeO 2 catalysts for various reactions: i.e., CO 2 methanation over Ni [3,25], methane combustion over Pd [17], water gas shift reaction over Cu [26], dry reforming of methane or methanol over Ni [27,28], hydrogenation of ethyl levulinate over Ru [21]. The nano-rod morphology appears the most active and stable for all these reactions, whereas the order of activity for nano-cubes and nano-octahedra may be reversed.…”

Section: Introductionmentioning

confidence: 99%

“…The difference in activity of Me/CeO 2 catalysts with different nano-shapes is ascribed to differences in the specific exposed crystallographic facets that affect the metal/support interactions [3,27,29], the amount of oxygen vacancies [3,17,21,25,[27][28][29], or acid-basic sites [28]. Experimental and theoretical studies on well-defined nanocrystals have established that the control of exposed facets in ceria is a promising way to direct the activity and selectivity of many reactions [29].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

One-Pot Synthesis of Ni0.05Ce0.95O2−δ Catalysts with Nanocubes and Nanorods Morphology for CO2 Methanation Reaction and in Operando DRIFT Analysis of Intermediate Species

et al. 2021

View full text Add to dashboard Cite

The valorization of CO2 via renewable energy sources allows one to obtain carbon-neutral fuels through its hydrogenation, like methane. In this study, Ni0.05Ce0.95O2−δ catalysts were prepared using a simple one-pot hydrothermal method yielding nanorod and nanocube particles to be used for the methanation reaction. Samples were characterized by XRD, BET, TEM, H2-TPR, and H2-TPD experiments. The catalytic activity tests revealed that the best performing catalyst was Ni0.05Ce0.95O2−δ, with nanorod morphology, which gave a CO2 conversion of 40% with a selectivity of CH4 as high as 93%, operating at 325 °C and a GHSV of 240,000 cm3 h−1 g−1. However, the lower activation energy was found for Ni0.05Ce0.95O2−δ catalysts with nanocube morphology. Furthermore, an in operando diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) analysis was performed flowing CO2:H2 or CO:H2 mixture, showing that the main reaction pathway, for the CO2 methanation, is the direct hydrogenation of formate intermediate.

show abstract

“…In the work of Tsiotsias et al (2020) [30], it was shown that the incorporation of alkaline and alkaline earth metals increases the alkalinity of the support, facilitates the chemisorption of CO 2 , increases the population of oxygen vacancies on the surface of the metal oxide, and improves the dispersion of the metal on the support. Jomjaree et al [31] prepared Ni/CeO 2 nanostructured catalysts with tunable CeO 2 morphology/structure determining the influence in increasing oxygen vacancies and oxygen storage capacity, and their influence on catalytic activity enhancement between 473 and 773 K under atmospheric pressure. Cardenas-Arenas et al [29] prepared a 3D-ordered macroporous structure of NiO-CeO 2 mixed oxide (NiO-CeO 2 (np)) to achieve high CO 2 methanation conversion due to its high specific surface area if compared with a reference catalyst without size control (NiO-CeO 2 (Ref)).…”

Section: Introductionmentioning

confidence: 99%

Effect of the Addition of Alkaline Earth and Lanthanide Metals for the Modification of the Alumina Support in Ni and Ru Catalysts in CO2 Methanation

et al. 2021

View full text Add to dashboard Cite

In order to reduce greenhouse gas emissions, which are reaching alarming levels in the atmosphere, capture, recovery, and transformation of carbon dioxide emitted to methane is considered a potentially profitable process. This transformation, known as methanation, is a catalytic reaction that mainly uses catalysts based on noble metals such as Ru and, although with less efficiency, on transition metals such as Ni. In order to improve the efficiency of these conventional catalysts, the effect of adding alkaline earth metals (Ba, Ca, or Mg at 10 wt%) and lanthanides (La or Ce at 14 wt%) to nickel (13 wt%), ruthenium (1 wt%), or both-based catalysts has been studied at temperatures between 498 and 773 K and 10 bar pressure. The deactivation resistance in presence of H2S was also monitored. The incorporation of La into the catalyst produces interactions between active metal Ni, Ru, or Ru-Ni and the alumina support, as determined by the characterization. This fact results in an improvement in the catalytic activity of the 13Ni/Al2O3 catalyst, which achieves a methane yield of 82% at 680 K for 13Ni/14La-Al2O3, in addition to an increase in H2S deactivation resistance. Furthermore, 89% was achieved for 1Ru-13Ni/14La-Al2O3 at 651 K, but it showed to be more vulnerable to H2S presence.

show abstract

Catalytic performance of Ni catalysts supported on CeO2 with different morphologies for low-temperature CO2 methanation

Cited by 75 publications

References 46 publications

Ni/CeO₂ prepared by improved polyol method for DRM with highly dispersed Ni

Ni/CeO₂ prepared by improved polyol method for DRM with highly dispersed Ni

One-Pot Synthesis of Ni0.05Ce0.95O2−δ Catalysts with Nanocubes and Nanorods Morphology for CO2 Methanation Reaction and in Operando DRIFT Analysis of Intermediate Species

Effect of the Addition of Alkaline Earth and Lanthanide Metals for the Modification of the Alumina Support in Ni and Ru Catalysts in CO2 Methanation

Contact Info

Product

Resources

About

Catalytic performance of Ni catalysts supported on CeO2 with different morphologies for low-temperature CO2 methanation

Cited by 75 publications

References 46 publications

Ni/CeO2 prepared by improved polyol method for DRM with highly dispersed Ni

Ni/CeO2 prepared by improved polyol method for DRM with highly dispersed Ni

One-Pot Synthesis of Ni0.05Ce0.95O2−δ Catalysts with Nanocubes and Nanorods Morphology for CO2 Methanation Reaction and in Operando DRIFT Analysis of Intermediate Species

Effect of the Addition of Alkaline Earth and Lanthanide Metals for the Modification of the Alumina Support in Ni and Ru Catalysts in CO2 Methanation

Contact Info

Product

Resources

About

Ni/CeO₂ prepared by improved polyol method for DRM with highly dispersed Ni

Ni/CeO₂ prepared by improved polyol method for DRM with highly dispersed Ni