CO and CO2 methanation over M (M Mn, Ce, Zr, Mg, K, Zn, or V)-promoted Ni/Al@Al2O3 catalysts

Le, Thien An; Kim, Jieun; Kang, Jong Kyu; Park, Eun Duck

doi:10.1016/j.cattod.2019.08.058

Cited by 44 publications

(20 citation statements)

References 64 publications

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“…Ni-CP-V4.0 was more selective towards CO than Ni-CP-V1.0, although both of them mainly promoted the reverse watergas shift reaction (RWGS). This is in good agreement with the study of Le et al, which confirmed that the main product of the reaction is carbon monoxide, formed mainly in the RWGS reaction [33]. A similar effect was observed for other types of promoters such as copper, especially promoted on hydrotalcite-derived catalysts [18].…”

Section: Resultssupporting

confidence: 92%

“…The CH 4 selectivity was found to be stable and higher than 91% for both Ni-CP-V0.0 and Ni-CP-V1.0. However, the methane selectivity for Ni-CP-V4.0 decreased from 84 to 79%, showing a possible negative impact of high V loading, which is favorable for CO production [33]. Finally, Ni-CP-V2.0 showed high conversion and high methane selectivity during time on stream.…”

Section: Stability Tests At 300 • Cmentioning

confidence: 96%

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Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

et al. 2021

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Co-precipitated Ni-Mg-Al hydrotalcite-derived catalyst promoted with vanadium were synthesized with different V loadings (0–4 wt%) and studied in CO2 methanation. The promotion with V significantly changes textural properties (specific surface area and mesoporosity) and improves the dispersion of nickel. Moreover, the vanadium promotion strongly influences the surface basicity by increasing the total number of basic sites. An optimal loading of 2 wt% leads to the highest activity in CO2 methanation, which is directly correlated with specific surface area, as well as the basic properties of the studied catalysts.

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Section: Resultssupporting

confidence: 92%

Section: Stability Tests At 300 • Cmentioning

confidence: 96%

Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

et al. 2021

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“…130,[183][184][185][186] Among them, Ru and Rh showed very high catalytic performances (up to 95% selectivity to CH 4 and 65-80% CO 2 conversion). 130,135,187 Cheaper materials, such as Co, 188,189 Fe, [190][191][192][193][194] and Mn, 166,189 and bimetallic particles containing noble metals, Ni and Fe (ref. 194 and 195), were also investigated.…”

Section: Catalysis Science and Technologymentioning

confidence: 99%

Mechanistic and multiscale aspects of thermo-catalytic CO₂conversion to C₁products

Alam

Cheula

Moroni

et al. 2021

Catal. Sci. Technol.

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“…The negative shifts of peak positions corresponding to NH 3 strong adsorption and the decreases of the adsorbed amounts of NH 3 after MgO addition suggested that MgO poisoned strong acid sites in catalysts (Table S10). Moreover, the decrease of acid sites was further confirmed by CO 2 ‐TPD measurement, as revealed by the positive shifts of peak positions and increase of CO 2 adsorption amounts (Figure 4d and Table S11) [45–48] . Additionally, NH 3 ‐TPD measurement was performed on the spent 0.1Pt6Mg2Ga/S10 catalyst after 10 cycles (Figure S9 and Table S10).…”

Section: Resultsmentioning

confidence: 63%

Suppressing Dehydroisomerization Boosts n‐Butane Dehydrogenation with High Butadiene Selectivity

Chu

Liu

Gong

et al. 2021

Chemistry A European J

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Butadiene (BD) is a critical raw material in chemical industry, which is conventionally produced from naphtha cracking. The fast‐growing demand of BD and the limited oil reserve motivate chemists to develop alternative methods for BD production. Shale gas, which mainly consists of light alkanes, has been considered as cheap raw materials to replace oil for BD production via n‐butane direct dehydrogenation (n‐BDH). However, the quest for highly‐efficient catalysts for n‐BDH is driven by the current drawback of low BD selectivity. Here, we demonstrate a strategy for boosting the selectivity of BD by suppressing dehydroisomerization, an inevitable step in the conventional n‐BDH process which largely reduces the selectivity of BD. Detailed investigations show that the addition of alkali‐earth metals (e. g., Mg and Ca) into Pt‐Ga2O3/S10 catalysts increases Pt dispersity, suppresses coke deposition and dehydroisomerization, and thus leads to the significant increase of BD selectivity. The optimized catalyst displays an initial BD selectivity of 34.7 % at a n‐butane conversion of 82.1 % at 625 °C, which outperforms the reported catalysts in literatures. This work not only provides efficient catalysts for BD production via n‐BDH, but also promotes the researches on catalyst design in heterogeneous catalysis.

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CO and CO2 methanation over M (M Mn, Ce, Zr, Mg, K, Zn, or V)-promoted Ni/Al@Al2O3 catalysts

Cited by 44 publications

References 64 publications

Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

Mechanistic and multiscale aspects of thermo-catalytic CO₂conversion to C₁products

Suppressing Dehydroisomerization Boosts n‐Butane Dehydrogenation with High Butadiene Selectivity

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CO and CO2 methanation over M (M Mn, Ce, Zr, Mg, K, Zn, or V)-promoted Ni/Al@Al2O3 catalysts

Cited by 44 publications

References 64 publications

Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

Co-Precipitated Ni-Mg-Al Hydrotalcite-Derived Catalyst Promoted with Vanadium for CO2 Methanation

Mechanistic and multiscale aspects of thermo-catalytic CO2conversion to C1products

Suppressing Dehydroisomerization Boosts n‐Butane Dehydrogenation with High Butadiene Selectivity

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Mechanistic and multiscale aspects of thermo-catalytic CO₂conversion to C₁products