Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 8 of 8 for “"Gas-solid reaction"”.
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Analysis of hydrodynamic phenomena in a fluidized bed for thermochemical hydrogen production
… Conversions of CuCi2 and steam as a fluidizing gas are numerically investigated using a new non-catalytic gas-solid reaction model, proposed in the literature but here updated for the purposes of the present study. The results are illustrated considering two cases of kinetics for the consumption …
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Improvement of Fluidization Ability for Group A Powders by Fine Powder Additives
… industrial values, especially in improving the gas-solid reaction conversion.
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Numerical modeling of cold flow and hot gas desulfurization in a circulating fluidized bed
… carried out to understand the behavior of the solid and gas phases in a CFB riser. Only the riser is modeled as a straight pipe. A model with linear algebraic approximation to solids viscosity of the form, mus = 5.34epsilons, (epsilon s is the solids volume fraction) with an appropriate …
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Intragranular Tungsten-Titanium Carbide Composite Ceramics via Gas-Solid Displacement Reactions
… intragranular nanocomposite powders produced via reaction processing-based techniques. This dissertation details the thermodynamic basis and applied kinetics of a processing scheme for fabricating nanocomposite ceramics whose morphological heterogeneity reflects that originally developed in the …
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Chemical Looping for Selective Oxidations
… a reactor technology that achieves simultaneous reaction and separation. For a large subset of reactions (viz. abstraction or insertion of oxygen), this technology is based upon the use of oxygen carriers. These materials, typically metal oxides, reversibly store and release oxygen, and there is …
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An investigation of nickel(II), copper(II) and cobalt(II) complexes employing bidentate ligands derived from 2(β-ketoalkyl) heteroaromatic compounds
… complexes were also isolated as base adducts. Solid (Ni(TFAP)₂(H₂0))₂ appears to have bridging water molecules that could not be removed without decomposition while solid Ni(TFAP)₂(H₂0)₁.₅ appears to have terminal and/or lattice water that is easily removed. Octahedral pyridine adducts were …
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Modelling Non-Catalytic Gas-Solid Reactions
… Dissertation was to develop and verify a general reaction and diffusion model for non-catalytic reactions between gases and porous solids, particularly those relevant to the clean use of fossil fuels. Here, the internal pore structure of the solid was characterised by observing the kinetics in a …
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Fundamental Studies of Chemical Looping Combustion with Oxygen Uncoupling (CLOU) of Biomass Char
… which utilises lattice oxygen contained in solid particles of an inorganic oxide (the ‘oxygen carrier’) to combust fuels, enabling the collection of products of combustion (CO₂ and H₂O) undiluted with nitrogen. It offers, therefore, an attractive method for capturing CO₂ for use or for …