SiO 2 -supported Fe &amp; FeMn colloids—Fischer-Tropsch synthesis on 3D model catalysts

Dad, Mohammadhassan; Lancee, Remco J.; Vuuren, Matthys Janse van; Loosdrecht, J. van de; Niemantsverdriet, J.W.; Fredriksson, Hans

doi:10.1016/j.apcata.2017.02.023

Cited by 9 publications

(9 citation statements)

References 30 publications

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“…Besides that, Mn helps to stabilize the active iron carbide phase and acts as an electron donor, thereby changing the properties of Fe in a similar manner to alkali promoters. 54 Thus, the modification of Fe-based catalysts via Mn-promoter doping could offer an excellent performance. Indeed, an increase in olefin selectivity is noticed from Table 4 , as indicated by the rising olefin/paraffin (O/P) ratio.…”

Section: Resultsmentioning

confidence: 99%

Mn–Fe nanoparticles on a reduced graphene oxide catalyst for enhanced olefin production from syngas in a slurry reactor

et al. 2018

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Section: Resultsmentioning

confidence: 99%

Mn–Fe nanoparticles on a reduced graphene oxide catalyst for enhanced olefin production from syngas in a slurry reactor

et al. 2018

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“…Nasser's report claimed that Mn doping promoted Fe nanoparticles catalyst with the formation of Mn-rich layer around Fe-rich core where its outer layer is beneficial for olefin formation, and this can be controlled by adjusting the adsorption ability and surface properties of the catalyst. It also stabilised the active iron phase acting as an electron donor similar to that of alkali promoters [151]. This stabilising effect was believed to increase the olefin and C5 + species selectivity and the tunable properties of Mn shell thickness which are conductive to catalytic performances in FTS.…”

Section: Graphene-based Iron Catalystmentioning

confidence: 99%

A recent trend: application of graphene in catalysis

et al. 2020

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Graphene, an allotrope of carbon in 2D structure, has revolutionised research, development and application in various disciplines since its successful isolation 16 years ago. The single layer of sp 2 -hybridised carbon atoms brings with it a string of unrivalled characteristics at a fraction of the price of its competitors, including platinum, gold and silver. More recently, there has been a growing trend in the application of graphene in catalysis, either as metal-free catalysts, composite catalysts or as catalyst supports. The unique and extraordinary properties of graphene have rendered it useful in increasing the reactivity and selectivity of some reactions. Owing to its large surface area, outstanding adsorptivity and high compatibility with various functional groups, graphene is able to provide a whole new level of possibilities and flexibilities to design and synthesise fit-for-purpose graphene-based catalysts for specific applications. This review is focussed on the progress, mechanisms and challenges of graphene application in four main reactions, i.e., oxygen reduction reaction, water splitting, water treatment and Fischer-Tropsch synthesis. This review also summarises the advantages and drawbacks of graphene over other commonly used catalysts. Given the inherent nature of graphene, coupled with its recent accelerated advancement in the synthesis and modification processes, it is anticipated that the application of graphene in catalysis will grow exponentially from its current stage of infancy.

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“…Moreover, through XRD and scanning TEM energy dispersive X-ray (STEM-EDX) analysis, the active phase in the bimetallic system for FTS was proposed to be a function of the employed reaction conditions, CoFe alloy and Fe-and Co-carbides being the identified phases in low-and hightemperature FTS, respectively. Dad et al [119] studied the effect of Mn-promotion on Co via colloidally prepared CoMn supported on Stöber (SiO2) spheres. Apart from higher olefin selectivity, the catalyst proved more stable in FTS than unpromoted Co/SiO2.…”

Section: Hydrogenation Reactionsmentioning

confidence: 99%

“…For given reaction conditions, the CO conversion, selectivities towards DME and C1-C4 products, and the DME formation rate could be tuned by varying the ratio of Cu to acidic sites as well as the micropore area. Dad et al [119] studied the effect of Mn-promotion on Co via colloidally prepared CoMn supported on Stöber (SiO 2 ) spheres. Apart from higher olefin selectivity, the catalyst proved more stable in FTS than unpromoted Co/SiO 2 .…”

Section: Hydrogenation Reactionsmentioning

confidence: 99%

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Designing Nanoparticles and Nanoalloys for Gas-Phase Catalysis with Controlled Surface Reactivity Using Colloidal Synthesis and Atomic Layer Deposition

et al. 2020

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Supported nanoparticles are commonly applied in heterogeneous catalysis. The catalytic performance of these solid catalysts is, for a given support, dependent on the nanoparticle size, shape, and composition, thus necessitating synthesis techniques that allow for preparing these materials with fine control over those properties. Such control can be exploited to deconvolute their effects on the catalyst’s performance, which is the basis for knowledge-driven catalyst design. In this regard, bottom-up synthesis procedures based on colloidal chemistry or atomic layer deposition (ALD) have proven successful in achieving the desired level of control for a variety of fundamental studies. This review aims to give an account of recent progress made in the two aforementioned synthesis techniques for the application of controlled catalytic materials in gas-phase catalysis. For each technique, the focus goes to mono- and bimetallic materials, as well as to recent efforts in enhancing their performance by embedding colloidal templates in porous oxide phases or by the deposition of oxide overlayers via ALD. As a recent extension to the latter, the concept of area-selective ALD for advanced atomic-scale catalyst design is discussed.

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SiO 2 -supported Fe & FeMn colloids—Fischer-Tropsch synthesis on 3D model catalysts

Cited by 9 publications

References 30 publications

Mn–Fe nanoparticles on a reduced graphene oxide catalyst for enhanced olefin production from syngas in a slurry reactor

Mn–Fe nanoparticles on a reduced graphene oxide catalyst for enhanced olefin production from syngas in a slurry reactor

A recent trend: application of graphene in catalysis

Designing Nanoparticles and Nanoalloys for Gas-Phase Catalysis with Controlled Surface Reactivity Using Colloidal Synthesis and Atomic Layer Deposition

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