Results 161 to 170 of about 2,311 (204)
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Solvolysis and Catalytic Hydrotreatment of Wood
1993The objective of this study is to produce hydrocarbon fuel from wood in a two steps process. In the first step, pine wood powder is treated with acidified organic solvents such as ethanol, methanol, ethylene glycol, tetralin and mixture of them with phenol at relatively mild conditions.
A. Elamin +3 more
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Kinetic model of continuous mixtures, for the hydrotreatment of diesel
Journal of Computational Methods in Sciences and Engineering, 2009One of the major issues in the kinetic modeling of refining processes, such as hydro treatment (HDT) of gas oil, consists in that oil by-products contain a large number of individual components which are difficult to handle. In this sense, the concept of continuity in order to describe the elements of such mixtures through a continuous distribution ...
Yris Kenelma Gonzalez +3 more
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Solvolysis and hydrotreatment of wood to provide fuel
Biomass and Bioenergy, 1996The objective of this study is to describe a liquefaction process of wood in two successive steps. The wood is first dissolved in an organic solvent, acidified with small amounts of H2SO4, in mild conditions of temperature and pressure. The solvolytic oil is then subjected to a catalytic hydrotreatment at about 350°C.
Sid-Ahmed Rezzoug, Richard Capart
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Modeling in the development of hydrotreatment processes
Catalysis Today, 2004Abstract The kinetic modeling of the hydrodesulfurization (HDS) process is based upon the detailed reaction network, distinguishes between the hydrogenolysis- and hydrogenation-steps and accounts for the adsorption of the various reacting species on two types of active sites. The functional form of the rate equations for the conversion of thiophene, (
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Upgrading of Pyrolysis Oils by Hydrotreatment
1991Bio-oil can be produced by high-pressure, low-temperature liquefaction in a liquid-solid phase system or by moderate-temperature pyrolysis in a gas-solid phase system at ambient pressure. Both processes give an oxygenated product. While this liquid can be utilised directly in some applications, stabilisation or upgrading is needed to produce material ...
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Fluorinated hydrotreatment catalysts
Applied Catalysis, 1988Ch. Papadopoulou +3 more
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Fluorinated hydrotreatment catalysts
Applied Catalysis, 1990Ch. Kordulis +4 more
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Deactivating Hydrotreatment Catalysts: A Review
Catalysis in Industry, 2023S. V. Budukva +3 more
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New Uranium-Based Hydrotreatment Catalysts.
1987This article deals with the preparation, the physical characterization (EXAFS, XPS) and the reactivity of NiU/Al 2 O 3 and NiMoU/Al 2 O 3 . The uranium is impregnated from a solution of uranyl acetylacetonate by chemical reaction with the hydroxyl groups of the support. HDS of thiophene and HDN of pyridine at atmospheric pressure are tested.
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