Effect of Manganese Promoter on Cobalt Supported Magnesia Catalyst for Fischer-Tropsch Synthesis

Warayanon, Watis; Tungkamani, Sabaithip; Sukkathanyawat, Hussanai; Phongaksorn, Monrudee; Ratana, Tanakorn; Sornchamni, Thana

doi:10.1016/j.egypro.2015.11.456

Cited by 4 publications

(3 citation statements)

References 4 publications

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“…H 2 -TPSR technique (Figure ) was further used to determine the CO dissociation ability, − which could be denoted with the signal intensity of CH 4 according to the following equation CO + 3 H 2 → CH 4 + H 2 normalO …”

Section: Discussionmentioning

confidence: 99%

Mn-Promoted Ru-Based Catalysts for Enhanced Fischer–Tropsch Synthesis of Olefins from Syngas

An,

Wang,

et al. 2023

ACS Catal.

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The promotion effect of manganese on the Ru-based Fischer−Tropsch to olefins (FTO) reaction was investigated. Methane formation and second hydrogenation of olefins were effectively suppressed, while catalytic activity and olefin formation, especially for long-chain olefins, were greatly promoted with the addition of Mn. Structure characterization suggested that the addition of Mn could promote the dispersion of Ru nanoparticles (NPs) and enhance the electron density of metallic Ru sites, thus boosting the level of CO adsorption and dissociation. The electronic effect of Mn also creates a C*-rich local chemical environment that could weaken the hydrogenation of olefins. This work provides a simple and feasible way to improve Ru atom utilization for the rational design of Ru-based FTO catalysts.

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Section: Discussionmentioning

confidence: 99%

Mn-Promoted Ru-Based Catalysts for Enhanced Fischer–Tropsch Synthesis of Olefins from Syngas

An,

Wang,

et al. 2023

ACS Catal.

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“…Industrially used Co nanoparticles are commonly supported on oxides such as alumina (Al 2 O 3 ), silica (SiO 2 ), and titania (TiO 2 ). 29,30 Other oxidic supports such as MgO 31,32 and CeO 2 33,34 have been studied as well. The primary functions of these materials are to disperse the active metal, stabilize the nanoparticles at elevated temperatures, and provide mechanical strength.…”

Section: ■ Introductionmentioning

confidence: 99%

“…One aspect that was however not explicitly considered in this earlier study is the influence of the support material used to maintain the active phase in the nanoparticle form. Industrially used Co nanoparticles are commonly supported on oxides such as alumina (Al 2 O 3 ), silica (SiO 2 ), and titania (TiO 2 ). , Other oxidic supports such as MgO , and CeO 2 , have been studied as well. The primary functions of these materials are to disperse the active metal, stabilize the nanoparticles at elevated temperatures, and provide mechanical strength .…”

Section: Introductionmentioning

confidence: 99%

Unraveling the Role of Metal–Support Interactions on the Structure Sensitivity of Fischer–Tropsch Synthesis

Van Etten,

De Laat,

Hensen

et al. 2023

J. Phys. Chem. C

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Structure sensitivity plays a pivotal role in heterogeneous catalysis and the Fischer–Tropsch reaction is one of the prime examples of such a structure-sensitive reaction. The activity and selectivity of this reaction depend on the size of the nanoparticle and this trend is observed for a whole range of support materials. To understand why metal–support interactions do not affect this trend, a ReaxFF force field is developed that effectively mimics the broad variety of support materials and captures the metal–support interaction strength into a single structural parameter. Particles of 1–9 nm embedded on support materials are sampled using simulated annealing molecular dynamics and the effect of the metal–support interaction on the active site distribution is studied. It is found that although the size-dependency profile of various active site topologies depends on the interaction strength of the nanoparticle with the support, step-edge sites with an FCC(110) motif remain insensitive to the type of support. Based on microkinetic simulations, it is established that these sites are predominantly responsible for the observed atom-based FTS activity rationalizing why Fischer–Tropsch synthesis is structure-sensitive but support-insensitive.

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Synthesis of binary Co–Mg–O oxide system and study of its behavior in reduction/oxidation cycling

Vedyagin

Karnaukhov

Cherepanova

et al. 2019

International Journal of Hydrogen Energy

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Effect of Manganese Promoter on Cobalt Supported Magnesia Catalyst for Fischer-Tropsch Synthesis

Cited by 4 publications

References 4 publications

Mn-Promoted Ru-Based Catalysts for Enhanced Fischer–Tropsch Synthesis of Olefins from Syngas

Mn-Promoted Ru-Based Catalysts for Enhanced Fischer–Tropsch Synthesis of Olefins from Syngas

Unraveling the Role of Metal–Support Interactions on the Structure Sensitivity of Fischer–Tropsch Synthesis

Synthesis of binary Co–Mg–O oxide system and study of its behavior in reduction/oxidation cycling

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