Fischer—Tropsch synthesis is a set of catalytic processes that can be used to produce fuels and chemicals from synthesis gas mixture of CO and H 2which can be derived from natural gas, coal, or biomass. Biomass to Liquid via Fischer—Tropsch BTL-FT synthesis is gaining increasing interests from academia and industry because of its ability to produce carbon neutral and environmentally friendly clean fuels; such kinds of fuels can help to meet the globally increasing energy demand and to meet the stricter environmental regulations in the future.
This process could be one of the actors in the reduction of oil dependency of the transportation sector. In fact, it has great potential for producing synthetic fuels also from renewable sources, such as biomass, after its thermochemical conversion gasification into synthesis gas.
Concerning the quality of a diesel fuel produced with this technology, it has a lower local environmental impact than conventional diesel, since it is practically free of sulphur and nitrogen compounds and yields lower exhaust emissions of hydrocarbons, CO and particulates.
The present study focuses on the use of cobalt-based catalysts for the production of diesel. Ordered mesoporous materials SBAcharacterized by a 1-dimensional mesoporous network, were tested as model supports and showed the possibility of occurrence of CO-diffusion limitations at diffusion distances much shorter than those required for conventional 3-dimensional porous network supports.
The linear relationship mentioned above, derived for conventional supports, was shown to be an efficient tool for indicating whether measured selectivities are affected by CO-diffusion limitations.
Some of the catalysts were exposed to H2-poor syngas and to external water addition and the effects on the selectivity relationships were investigated.
It was found that removal of indigenously produced water slows down the reaction rate significantly. The nature of this positive effect on the rate seems to be unrelated to changes in amounts of amorphous polymeric carbon detectable by temperature-programmed hydrogenation of the spent catalyst.
Place, publisher, year, edition, pages Stockholm: · Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Chemical Engineering, plombier-nemours.com · Due to the global growth in production of synthetic fuels via the Gas-to-Liquid (GTL), Coal-To-Liquid (CTL) and Biomass-To-Liquid (BTL) processes, academic and industrial interest in Fischer–Tropsch synthesis (FTS) research has increased during the past decade.
The undesired product of FTS is methane and plombier-nemours.com for the study of the high temperature Fischer-Tropsch synthesis over an iron catalyst at an H 2 / CO = 10, °C, 6 bar and GHSV = ml(n).gcat hr plombier-nemours.com · AN INVESTIGATION OF FISCHER-TROPSCH REACTION FOR SYNTHESIS OF HYDROCARBONS AND ALCOHOLS Thesis submitted in accordance with the requirement of Cardiffplombier-nemours.com · Fischer-Tropsch Refining.
by. Arno de Klerk. A thesis submitted in partial fulfillment. of the requirements for the degree. Philosophiae Doctor (Chemical Engineering)plombier-nemours.com · i Cobalt-Doped Zinc Oxide Thin Films as Model Fischer-Tropsch Nano-Catalysts Grown by Pulsed Electron Beam Ablation By Asghar Ali A thesis submitted in partial fulfillmentplombier-nemours.com