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 27 for “"Dry Reforming"”.
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Dry reforming of associated natural gas using catalytic membrane reactors.
… challenges in the area of energy research. Dry reforming of propane (C3H8) (DRP), which uses both CO2 and C3H8 as reactants, is a potential method to utilize the previously-mentioned gases in the atmosphere. Associated natural gas containing high concentrations of CO2 and C3H8 could …
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The suitability of Ni-Co catalysts in the dry reforming reaction
In recent times, the dry reforming of methane has received significant interest as an alternative process through which synthesis gas can be produced. This is because dry reforming combines methane and carbon dioxide which are both greenhouse gases into synthesis gas which is used in the production …
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Kinetic study of dry reforming of Methane with Ni over different supports and Pt/Al2O3
… a kinetic study on Ni series catalysts for dry reforming of methane (DRM) and comparison with a commercially noble metal catalyst Pt/Al2O3. For each catalyst, a corresponding kinetic model needs to be established. These kinetic schemes should be sophisticated enough to describe the …
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Hydrogen Production by Water Gas Shift Reaction Following Dry Reforming of Biogas Methane in Membrane and Packed Bed Tubular Reactors
… reaction of reformate gas obtained from the dry reforming of biogas methane, in order to produce bio-renewable hydrogen suitable for feed to a fuel cell. Accordingly, three phases of the study were executed involving the identification and optimization of the catalyst, application in a …
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Catalytic Reforming of Biogas for Syngas Production
… the CO₂ content dilutes the quality of the fuel. Dry and auto-thermal reforming are catalytic methods that convert both the CH₄ and CO₂ into H₂ and CO, or syngas, a valuable product that can be used to produce liquid fuels, provide H₂ for fuel cells, or improve the combustion of biogas. A Rh/Al₂O₃ …
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Innovative hydrocarbons recovery and utilization technology using reactor-separation membranes for off-gases emission during crude oil shuttle tanker transportation and natural gas processing.
… hydrocarbons. The recovered gas is upgraded by dry reforming reactions employing rhodium/alumina membrane incorporated into a shell and tube reactor. Mixed gas permeation tests have been carried out with the permeate and feed gases sent to the online gas chromatograph (GC) equipped with a mass …
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DEVELOPMENT OF NOVEL CATALYSTS AND PROCESSES FOR SUSTAINABLE HYDROGEN TECHNOLOGIES
… propane dehydrogenation (PDH), CO₂ methanation, dry reforming of methane (DRM), and COₓ-free catalytic methane decomposition (CDM). A core challenge in these processes is catalyst sintering, which reduces stability and performance. The research develops anti-sintering strategies using single-atom …
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Carbeto de molibdênio promovido por níquel como catalisador na reação de reforma seca do metano
… the molybdenum carbide used as catalysts in the dry reforming of methane (DRM), tested in the temperature range of 700-850 °C. Several oxide precursors (nanostructured or not) were synthesized by the methods of coprecipitation (CP), wet impregnation and mechanical mixture in order to achieve the …
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ADVANCED BIFUNCTIONAL CORE-SHELL CATALYSTS FOR METHANE REFORMING USING CARBON DIOXIDE
… of CO2 and CH4 to produce hydrogen or syngas via dry reforming of methane (DRM) reaction is an environmentally and commercially attractive prospect in view of the escalating global concerns on climate change from anthropogenic CO2 emissions. However, operational challenges stemming from rapid …
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CO2 reduction over noble metal/carbon nanotube catalyst
… activity for CO2 reduction in the contexts of dry reforming (DR) of methane (CH_4 + CO_2 -> 2CO + 2H_2) and reverse water gas shift (RWGS) (H2 + CO_2 -> CO + H_2O). Reaction temperatures range from 773 to 973 K, with system pressure at 30 psig. The feed molar ratios CH4/CO_2 and CO_2/H_2 are …
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Experimental investigation of CO2 valorization by plasma discharges
… and efficiency both for CO2 reduction and dry reforming of methane. In this work a study on the effect of ethylene addition in the post discharge is presented, together with a technique to accurately estimate the energy dissipartion in the plasma and correctly assess the process efficiency.
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Atomic/molecular layer deposition prepared size-selective catalysts and supported nickel catalysts
… catalytic activity and excellent stability for dry reforming of methane (DRM) reaction. A 4-channel α-Al₂O₃ hollow fiber was also studied as a support for Ni nanoparticles. The Ni/α-Al₂O₃ hollow fiber catalyst showed excellent performance in catalyzing the DRM reaction. The performance of the …
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Syngas production using a catalytic engine
… parallels a project that uses homogeneous reforming in-cylinder without a catalyst, with air or oxygen-enriched air (partial oxidation). This experiment explores the use and effects of a catalyst deposited on metallic foams placed in a one-cylinder compression-ignition engine, operating …
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Developing and evaluating a partition-cavity solar thermochemical reactor for syngas production via computational fluid dynamics
… in the solar thermochemical reactor for the dry reforming of methane (DRM) process. The heat transfer results revealed that the conduction of the strut is dominant for the temperature distribution in the catalyst region. The diversified shapes of POCS have little influences on the methane …
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Development and characterization of an impedance-based carbon sensor for the detection of catalyst coking in steam-methane and dry-methane reforming systems
… the early stages of catalyst coking in methane reforming systems has been developed. The sensor is similar to the one developed by Wheeler et al., but it has been redesigned to reduce unwanted gas-phase response and increase coking response in methane reforming environments. The sensor comprises …
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Application of Molybdenum Carbide Catalysts for the CO2-assisted Oxidative Dehydrogenation of Ethane
… or if one of the major side reactions, the dry-reforming of C2H6 to synthesis gas, is preferred. In this study, MoxCy nanoparticles were prepared via various (novel) synthesis techniques, dispersed on a variety of MOx support materials as well as modified with various promoters. Besides the …
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ENGINEERING NI/AL2O3 CATALYSTS BY ATOMIC LAYER DEPOSITION FOR METHANE REFORMING
<p>"Dry reforming of methane (DRM) could be a promising choice to utilize natural gas (mainly methane or CH<sub>4</sub>), recycle captured CO<sub>2</sub>, and produce valuable syngas. Promoters (e.g., CeO<sub>2</sub> and MgO) on Ni/Al<sub>2</sub>O<sub>3</sub> prepared by atomic layer deposition …
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Studies of the Ethanol Steam Reforming Reaction in a Membrane Reactor
… (MRs). The reaction studied is the ethanol steam reforming (ESR) reaction using Co-Na/ZnO catalysts, chosen because of their high activity and stability. The Co-Na/ZnO catalysts were prepared by a co-precipitation method and it was found that promotion with a moderate amount of Na (1.0 wt%) …
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Design of advanced Catalysts and new Strategies for biogas Reforming
… En este contexto, el reformado seco de metano (Dry Reforming of Methane, DRM) se plantea como una estrategia prioritaria para la conversión eficiente de biogás en gas de síntesis, integrándose en rutas de valorización como la producción de ácido acético u otros compuestos de interés industrial. …
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Elucidation of the Catalytic Partial Oxidation of Methane Utilizing the One-of-a-Kind Catalytic Shock Tube Technique
… oxidation or complete oxidation followed by reforming steps. What is happening when the reaction is allowed to occur in an environment absent of transport limitations, absent of temperature gradients and temperature changes, absent of boundary layers must be understood and, until now, has yet …
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