نتایج جستجو برای: tropsch ft

تعداد نتایج: 20429  

2015
Mala A. Sainna Sam P. de Visser Francesc Illas

Industrial Fischer-Tropsch processes involve the synthesis of hydrocarbons usually on metal surface catalysts. On the other hand, very few homogeneous catalysts are known to perform a Fischer-Tropsch style of reaction. In recent work, we established the catalytic properties of a diruthenium-platinum carbene complex, [(CpRu)₂(μ²-H) (μ²-NHCH₃)(μ³-C)PtCH₃(P(CH₃)₃)₂](CO)n⁺ with n=0, 2 and Cp=η⁵-C₅(...

Journal: :Reactions 2023

The effect of the different supports and catalyst-reducing agents on Fischer–Tropsch (FT) reaction was investigated. large surface area SiO2 support with a smaller pore volume deposited fine, evenly distributed Co3O4. Cubic-shaped Co3O4 appeared in clusters TiO2 support, whereas existed as single particles Al2O3 support. activity data obtained were discussed terms cluster size, particle shape, ...

Journal: :Microporous and Mesoporous Materials 2022

10-membered ring IM-5 zeolite has shown excellent performance in many catalytic reactions. The efficient preparation of high silica by situ synthesis remains huge challenge. Here, with SiO2/Al2O3 ratio (SAR) 49–116 was acquired HNO3 treatment. An interesting stepwise dealumination behavior discovered during the whole acid-treatment process (based on XRF characterization). Extra-framework Si (EF...

Journal: :Chemical communications 2005
Dae Jung Kim Brian C Dunn Paul Cole Greg Turpin Richard D Ernst Ronald J Pugmire Min Kang Ji Man Kim Edward M Eyring

The silylation of SBA-15 enhances the reducibility of cobalt oxides on a SBA-15 supported cobalt catalyst, and consequently increases the catalytic activity for Fischer-Tropsch synthesis of hydrocarbons from syngas and selectivity for longer chain products.

Journal: :Journal of chromatography. A 2004
Colombe Vendeuvre Fabrice Bertoncini Laurent Duval Jean-Luc Duplan Didier Thiébaut Marie-Claire Hennion

Comprehensive two-dimensional gas chromatography (GC x GC) has been investigated for the characterization of high valuable petrochemical samples from dehydrogenation of n-paraffins, Fischer-Tropsch and oligomerization processes. GC x GC separations, performed using a dual-jets CO2 modulator, were optimized using a test mixture representative of the hydrocarbons found in petrochemicals. For comp...

2015
Xiaolai Zhang Haitao Zhang Qiwen Sun Weixin Qian Weiyong Ying

High temperature Fischer-Tropsch synthesis process use fixed fluidized bed as a reactor. In order to understand the flow behavior in the fluidized bed better, the research of how the radial velocity affects the entire flow field is necessary. Laser Doppler Velocimetry (LDV) was used to study the radial velocity distribution along the diameter direction of the cross-section of the particle in a ...

Fischer-Tropsch synthesis is a promising route for production of light olefins via CO hydrogenation over transition metals. Co is one of the most active metals for Fischer-Tropsch synthesis. Some different variables such as preparation parameters and operational factors can strongly affect the selectivity of Fischer-Tropsch synthesis toward the special products. In the case of preparat...

2015
Tomohisa Miyazawa Toshiaki Hanaoka Katsuya Shimura Satoshi Hirata

The addition of Ru to Mn and Zr-modified Co/SiO2 catalysts, while applying different preparation orders and loading amounts, was investigated as a means of enhancing the Fischer-Tropsch synthesis reaction. The coimpregnation of Zr/SiO2 with Co, Mn and Ru gave the most attractive catalytic properties. This can be attributed to the higher dispersion of Co metal resulting from the coimpregnation o...

Journal: :Johnson Matthey Technology Review 2021

Long-distance air travel requires fuel with a high specific energy and density. There are no viable alternatives to carbon-based fuels. Synthetic jet from the Fischer-Tropsch (FT) process, employing sustainable feedstocks, is potential low-carbon alternative. A number of synthetic production routes have been developed, using range feedstocks including biomass, waste, hydrogen captured carbon di...

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