Colloidal Ru, Co and Fe-nanoparticles. Synthesis and application as nanocatalysts in the Fischer–Tropsch process

Gual, Aitor; Godard, Cyril; Castillón, Sergio; Curulla‐Ferré, Daniel; Claver, Carmen

doi:10.1016/j.cattod.2011.11.025

Cited by 91 publications

(52 citation statements)

References 256 publications

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“…Furthermore, in the production of ethanol from biomass, gas fermentation has lower carbon dioxide emissions and a higher rate of carbon conversion to fuel when compared with the thermochemical route [36]. The nature of the metal catalyst is a fundamental limitation in the FT process, and although recent research into the use of colloidal cobalt and iron nanoparticles demonstrates a route to improved activity and selectivity [40], microbial catalysts used in gas fermentation remain far more robust and selective.…”

Section: Advantages Of Gas Fermentationmentioning

confidence: 99%

Commercial Biomass Syngas Fermentation

2012

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Abstract:The use of gas fermentation for the production of low carbon biofuels such as ethanol or butanol from lignocellulosic biomass is an area currently undergoing intensive research and development, with the first commercial units expected to commence operation in the near future. In this process, biomass is first converted into carbon monoxide (CO) and hydrogen (H 2 )-rich synthesis gas (syngas) via gasification, and subsequently fermented to hydrocarbons by acetogenic bacteria. Several studies have been performed over the last few years to optimise both biomass gasification and syngas fermentation with significant progress being reported in both areas. While challenges associated with the scale-up and operation of this novel process remain, this strategy offers numerous advantages compared with established fermentation and purely thermochemical approaches to biofuel production in terms of feedstock flexibility and production cost. In recent times, metabolic engineering and synthetic biology techniques have been applied to gas fermenting organisms, paving the way for gases to be used as the feedstock for the commercial production of increasingly energy dense fuels and more valuable chemicals.

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Section: Advantages Of Gas Fermentationmentioning

confidence: 99%

Commercial Biomass Syngas Fermentation

2012

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“…This is especially problematic with spectroscopic tools like EXAFS, which take a volume not a surface average. A number of routes have now been developed that allow for better control of particle size:  carbon nanofibres (CNFs) with oxide defects to anchor / control particle growth during incipient wetness preparation; 39 49 As shown in Table 2, the first four of these methods have yielded the clear result that small particles (below around 7 nm or less) are intrinsically less active (and where looked at also less selective towards higher molecular weight products). For CNF anchored nanoparticles at both 1 and 35 bar a significant decrease in site time yield was observed for samples with nanoparticles smaller than 6 nm.…”

Section: Molecular Level Understanding Of Ft Catalysis On Cobaltmentioning

confidence: 99%

Recent developments in the application of nanomaterials to understanding molecular level processes in cobalt catalysed Fischer–Tropsch synthesis

Beaumont

2014

Phys. Chem. Chem. Phys.

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“…Not only Fe, Co and Ru are being considered in this quest for novel catalysts for the Fischer-Tropsch synthesis reaction. Other transition metals (and alloys of different metals) are being considered, especially those from group VIIIA in the Periodic Table because they display some activity in the C-C coupling reaction during CO hydrogenation [13,[16][17][18][19][20][21][22][23][24][25][26][27][28][29]. Yet, this is not a trivial task since small variations in the catalyst composition change dramatically the reaction yield and/or selectivity.…”

Section: Introductionmentioning

confidence: 99%

Fischer-Tropsch Synthesis on Multicomponent Catalysts: What Can We Learn from Computer Simulations?

2015

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Abstract:In this concise review paper, we will address recent studies based on the generalized-gradient approximation (GGA) of the density functional theory (DFT) and on the periodic slab approach devoted to the understanding of the Fischer-Tropsch synthesis process on transition metal catalysts. As it will be seen, this computational combination arises as a very adequate strategy for the study of the reaction mechanisms on transition metal surfaces under well-controlled conditions and allows separating the influence of different parameters, e.g., catalyst surface morphology and coverage, influence of co-adsorbates, among others, in the global catalytic processes. In fact, the computational studies can now compete with research employing modern experimental techniques since very efficient parallel computer codes and powerful computers enable the investigation of more realistic molecular systems in terms of size and composition and to explore the complexity of the potential energy surfaces connecting reactants, to intermediates, to products of reaction. In the case of the Fischer-Tropsch process, the calculations were used to complement experimental work and to clarify the reaction mechanisms on different catalyst models, as well as the influence of additional components and co-adsorbate species in catalyst activity and selectivity.

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Colloidal Ru, Co and Fe-nanoparticles. Synthesis and application as nanocatalysts in the Fischer–Tropsch process

Cited by 91 publications

References 256 publications

Commercial Biomass Syngas Fermentation

Commercial Biomass Syngas Fermentation

Recent developments in the application of nanomaterials to understanding molecular level processes in cobalt catalysed Fischer–Tropsch synthesis

Fischer-Tropsch Synthesis on Multicomponent Catalysts: What Can We Learn from Computer Simulations?

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