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Showing 1 to 20 of 166 for “"Fischer-Tropsch"”.
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Zeolite-Modified Fischer-Tropsch Synthesis
The improvement of the gasoline selectivity and quality with the addition of HZSM-5 to the Fe-FT process is evident from literature. The catalytic performance of the combined Fe-FT/HZSM-5 system has been observed to decline with time-on-stream, attributed to the migration of alkali from the Fe-FT …
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Predicting Transitions in Fischer-Tropsch Reactors
The Fischer-Tropsch process has the potential to be fundamental to a future without dependence on fossil fuels. It converts syngas, a readily available resource, into high quality hydrocarbons, with water being the primary byproduct. Like many gas-to-liquid processes, it is catalysed on a …
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The slurry-phase Fischer-Tropsch synthesis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1991.
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Nanosized iron crystallites for Fischer-Tropsch synthesis
Fischer-Tropsch synthesis is the production of hydrocarbons from CO and H2. The catalytically active metals for industrial application are cobalt and iron. In this work iron-based catalysts were studied. To ensure maximum metal utilisation and therefore a high weight specific catalytic activity, …
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Product distributions of the Fischer-Tropsch synthesis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1989.
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Catalyst systems for the Fischer-Tropsch synthesis
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1992.
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Fischer-Tropsch synthesis in a slurry reactor
Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, 1982.
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The role of additives in Fischer-Tropsch reactions
The Fischer-Tropsch Synthesis (FTS) is an alternative route to produce liquid fuels from a variety of carbon feedstocks including coal and biomass. Typically iron and cobalt based catalysts have been used for the FTS reaction, in which a mixture of CO and H2 (syn-gas) reacts to form hydrocarbons. …
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ENHANCING GAS PHASE FISCHER-TROPSCH SYNTHESIS CATALYST DESIGN
… investigated. A series of Fe-based catalysts for Fischer-Tropsch (F-T) synthesis were prepared. The different promoters were incorporated into the catalyst by impregnation The catalysts were characterized by several methods. The catalytic performance of these materials for F-T synthesis were …
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Vanadia Promoted Co-AI20 3 Fischer-Tropsch Catalysts
… V20 5 promotion on yAI203 supported cobalt-based Fischer-Tropsch catalysts. The y-Ah03 support was modified by addition of varying amounts of vanadia and was subsequently loaded with the same Co content (10 wt-%). The modified supports and catalysts were characterised using conventional …
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Fly Ash Zeolite Catalyst Support for Fischer-Tropsch Synthesis
… in heterogeneous catalytic processes. Gas phase Fischer-Tropsch Synthesis (FTS) over a fixed-bed of the prepared catalyst/FAZ support was identified as an appropriate process for evaluation, by comparison with commercial catalyst supports (silica, alumina, and 13X). Fly ash, obtained from the …
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DEVELOPMENT OF SUPPORTED COBALT CATALYST FOR FISCHER-TROPSCH SYNTHESIS
Fischer–Tropsch Synthesis (FTS) is a major part of feed-to-liquid (XTL) technologies which convert syngas (H_2+CO) into clean liquid hydrocarbon fuels and specialty chemicals. Understanding and developing FTS catalysts using mesoporous materials are of main interest in the present work. In the …
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Alumina-modified cobalt catalysts for the Fischer-Tropsch synthesis
In the Fischer-Tropsch process, valuable hydrocarbons are produced using the basic starting materials hydrogen and carbon monoxide, which can be derived from alternative carbon sources such as coal, gas or biomass [1]. Although this process has been studied for almost a century, the effects of the …
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Metal-support interactions on Fe-based Fischer-Tropsch catalysts
‘Metal support interactions’ is a term used to describe a phenomenon whereby the interaction between the active metal and the support material is strong enough to affect the catalytic activity and selectivity of the active phase. Primarily, there are two theories described in literature to explain …
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Manganese promotion of a Co/SiO2 Fischer-Tropsch catalyst
… influences the activity and selectivity of the FischerTropsch synthesis via the enhancement of CO adsorption and dissociation. The base catalyst is prepared by impregnation (IMPR) of the SiO2 support with cobalt(II) nitrate hexahydrate followed by calcination at 230 °C under a continuous flow of …
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Models for the hydrocracking of Fischer-Tropsch derived waxes
Includes synopsis.
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Metallic cobalt derived from cobalt nitrides for Fischer-Tropsch Synthesis
The Fischer-Tropsch synthesis (FTS) is a catalytic surface polymerisation reaction that converts synthesis gas, a mixture of carbon monoxide (CO) and hydrogen, into long chain hydrocarbons, namely α-olefins and n-paraffins. The product selectivity of this reaction is dependent on the nano effects …
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Studies on the composition of thermally oxidised Fischer-Tropsch waxes
A composition of thermally oxidised Fischer-Tropsch hard wax was proposed based on a study ofthe oxidation products of model compounds, n-Cl6, n-C24 and n-C32. The model compound oxidation yielded isomers of alcohols and ketones with carbon numbers ranging from 2 to the same carbon number as that …
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