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 20 of 42 for “"Reaction engineering"”.
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Kinetics and Reaction Engineering Aspects of Syngas Production by the Heterogeneously Catalysed Reverse Water Gas Shift Reaction
… pressure. The reverse water gas shift (RWGS) reaction was examined in both the forward and reverse direction. In addition to these experiments, the consecutive reaction of CO to CH4 was also studied. The results indicate that the Ni/Al12O19 and the Al2O3 catalyst used are suitable to convert …
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Acoustic emulsions of liquid, near-critical carbon dioxide and water : application to synthetic chemistry through reaction engineering
… By comparison, development of scCO2 as a reaction solvent has been much less successful due to its limited solvation power. Furthermore, the rates of reactions conducted in scCO2 tend to be slower than and their selectivities are comparable to those observed in hydrocarbon solvents. This …
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Experimental and computational study of mass transport in novel emulsion systems : strategies for reaction engineering and microparticle preparation
… and nano-droplets, leading to applications in reaction engineering and microparticle preparation.
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Development of a zeolite washcoating technique for microchannel reactors
… active research field in terms of chemical reaction engineering and process intensification. An important feature of microreactor technology is the requirement of a catalyst layer.
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Microfluidic synthesis of colloidal nanomaterials
… based approaches for synthesis and surface-engineering of colloidal particles. Bottom-up assembly through colloidal nucleation and growth is a popular route to the controlled synthesis of nanomaterials. Standard bench-scale synthetic chemistry techniques often involve non-uniform spatial and …
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Applications of the Bayesian approach for experimentation and estimation
… applied to two different case studies of complex reaction engineering problems.
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ΜΕΛΕΤΗ ΤΩΝ ΦΥΣΙΚΟΧΗΜΙΚΩΝ ΔΙΕΡΓΑΣΙΩΝ ΕΝΑΝΘΡΑΚΩΣΗΣ ΤΟΥ ΣΚΛΗΡΥΜΕΝΟΥ ΤΣΙΜΕΝΤΟΠΟΛΤΟΥ ΚΑΙ ΤΩΝ ΕΠΙΠΤΩΣΕΩΝ ΣΤΗΝ ΑΝΘΕΚΤΙΚΟΤΗΤΑ ΣΕ ΔΙΑΡΚΕΙΑ ΤΟΥ ΟΠΛΙΣΜΕΝΟΥ ΣΚΥΡΟΔΕΜΑΤΟΣ
… ATMOSPHERIC CO2 INTO THE CONCRETE PORES, AND ITS REACTION WITH THE CA(OH)2 OF THE CONCRETE MASS. WHEN THIS PROCESS, CALLED CARBONATION OF CONCRETE, REACHES THE REINFORCING BARS, CORROSION OF THE LATTER MAY COMMENCE. IN THIS WORK THE PHYSICOCHEMICAL PROCESSES IN THIS PHENOMENON ARE PRESENTED AND …
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Hydrodynamic cavitation for effluent treatment: using vortex-based cavitation devices
… i) clear guidelines to identify inception, ii) reaction engineering models to design these devices for continuous effluent treatment, and iii) understanding on the influence of scale on performance. An attempt to address the identified lacunae is made in this work as discussed …
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Carbon-nitrogen bond-forming reactions in supercritical and expanded-liquid carbon dioxide media : green synthetic chemistry with multiscale reaction and phase behavior modeling
… of carbon-nitrogen (C-N) bond-forming reactions of amines carried out in supercritical and expanded-liquid carbon dioxide (CO2) media. Key motivations behind this study were the importance of nitrogen-containing compounds in the pharmaceutical and fine chemical industries and a growing …
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An Integrated Process for Catalytical Conversion of Simple Sugars into Platform Chemicals, HMF and FDCA: Catalysis, Continuous Flow Reactor Design, Valorization of Waste By-Product
… the dehydration of sugars to HMF in a biphasic reaction system, while Mn-based catalysts, synthesized via the mechanochemical Metal-Organic Framework (MOF) method, were employed for the selective oxidation of HMF to FDCA. The physicochemical properties of these catalysts were systematically …
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Partial Oxidation of Hydrocarbons Over Ceria Zirconia Catalysts
… along several avenues pertaining to oxidation reactions. First, the major conclusions are summarized from a perspective describing active oxygen species on catalyst surfaces. Some oxygen species are more selective than others and if these species were better understood, a catalyst surface could …
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Development of a microreactor system for unsteady-state Fischer- Tropsch synthesis
… infonnation under industrially important reaction conditions; (2) a sliding-plug vibrofluidized-bed microreactor system for rapid switching of feed gases in the F-T synthesis; and (3) a cold-flow microreactor model for studying the gas mixing characteristics of the sliding-plug …
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Fundamental Kinetic Studies of CO2 and Steam Gasification
… of this technology is limited, due to its slow reaction rate, making kinetics determination one of the most active research topics in this field. Different kinetic models have been proposed in the literature for the study of coal and biomass gasification, based on assumptions about their …
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Controlled Radical Polymerization: Towards Industrially Relevant Conditions
Reversible deactivation radical polymerization (RDRP), also known as controlled radical polymerization (CRP), has been a significant area of polymer research for more than 20 years, allowing the facile synthesis of complex macromolecules previously unattainable by conventional free radical …
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A New Thin Layered Structural Coating on a Metal Substrate for Enhanced hydrogen Production from Steam Methane Reforming
<p>In the past decade the use of hydrogen has become more ubiquitous. Its applications range from the upgrading of fossil fuels, to the production of ammonia, to the hydrogenation of fats, to the production of muriatic acid and methanol, all without including the efforts being taken to move towards …
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Engineering novel tandem reactions using organometallic catalysts and (metallo)enzymes
… and continuous to be a push to develop one-pot reactions, within which several catalysts from the same or disciplines are combined to catalyze numerous chemical steps and yield enantiopure products in high yield and selectivity. While this strategy is widespread in the respective fields of …
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Formation of nanoemulsions and entrapped microdroplets
… discovery, diagnostics, material synthesis and reaction engineering. Current methods in literature require a prior step to generate droplets and do not allow for flexibility in controlling the morphology of droplets. We overcome these limitations by developing a method that uses sequential …
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Small-scale and flexible green ammonia production technology
… process by targeting the integration of reaction and separation in a single process vessel at low pressures, thereby achieving the simplification and down-scaling of the high pressure recycle loop of the Haber-Bosch process. Materials are developed for this purpose, the feasibility of …
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Series reactions and transport in catalysis and crystal growth: A multiscale modeling perspective
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2025-08-01
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Modelling of colloidal dynamics in complex soft matter systems
This dissertation, divided into three parts and funded by the multinational company Synthomer LTD, is devoted to the modelling of the complex dynamics among colloidal particles in soft matter systems which are influenced by the interplay between Brownian motion, the common denominator among all the …
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