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 28 for “"hydrocracking"”.
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Pseudo reaction kinetics and hydrocracking of 2, 6-lutidine
Includes bibliographical references.
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Models for the hydrocracking of Fischer-Tropsch derived waxes
Includes synopsis.
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Platinum Nanoparticles to Study Metal Location in Shape-Selective Hydrocracking
In the petrochemical industry, bifunctional hydrocracking is used to further refine long chain hydrocarbon product molecules into smaller, more valuable fragments (such as diesel and aviation fuel). The current study is focused on using hydrocracking to increase diesel yield, as the preferred …
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Hydrocracking of long chain n-Paraffins under Fischer-Tropsch conditions
… loaded H-MFI zeolites used for the hydrocracking of n- hexadecane under Fischer-Tropsch conditions were tested to address the inherent low CO tolerance of the pure palladium noble metal hydrocracking catalysts. The hydrocracking mechanism consists of two functions, namely the metal …
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Ideal hydrocracking catalysts for the conversion of FT wax to diesel
… of the wax to useful distillate fuels by mild hydrocracking is a well-known, economically viable method of producing liquid fuels, in particular diesel fuel. This project seeks to develop an ideal hydrocracking catalyst (i.e. a hydrocracking unit in which only primary cracking occurs) for the …
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The hydrocracking of long chain n-paraffins under Fischer-Tropsch conditions
Interest in the area of hydrocracking has grown rapidly over the years. In the early 1960's companies such as Chevron and Universal Oil Products (UOP) introduced new hydrocracking processes to manufacture high octane gasoline. The demand for transportation fuels such as diesel and jet fuel has …
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The effect of zeolite type on the hydrocracking of long n-paraffins
… to the desired distillate fuels fraction. This hydrocracking may be conducted utilising either monofunctional or bifunctional catalysts. Monofunctional catalysts, such as the supported sulphided base metals or metal oxides utilised in many crude oil refineries, yield a product with minimal …
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The hydrocracking of Fischer-Tropsch wax : using n-tetradecane as a model compound
… of the current diesel fuel is being produced by hydrocracking heavier fractions derived from crude oil. These hydrocracking processes utilise bi-functional catalysts which have a metal (hydrogenating/dehydrogenating) function and an acid (cracking) function. The most common of these hydrocracking …
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The effect of metal type and loading on n-paraffin hydrocracking conversion and selectivity
… more efficient than their petrol counterparts. Hydrocracking may be carried out using a bifunctional catalyst, consisting of metal and acid components. Industrially, hydrocracking is used to crack heavy crude oil fractions into the desired fuel range, however, the catalysts used are sulphided …
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Process Modeling of Next-Generation Liquid Fuel Production - Commercial Hydrocracking Process and Biodiesel Manufacturing
… and fractionation systems from plant data – hydrocracking process; and (2) integrated process modeling and product design of biodiesel manufacturing. \r\n1. Predictive Modeling of Large-Scale Integrated Refinery Reaction and Fractionation Systems from Plant Data -- Hydrocracking Processes: …
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Hydrocracking of n-C16 over MFI Zeolite Nano-sheets - Effect of the Si/Al Ratio
… with competitive adsorption of water (H2O) in hydrocracking of long-chain paraffins presents a promising opportunity to produce diesel with high yield and with high cetane number. Thus, in wet hydrocracking of a long-chain paraffin (n-hexadecane (n-C16)) over MFI nano-sheets, it was …
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Advancing plastics reutilization via catalytic hydroconversion
… and fuels. Hydroconversion processes, including hydrocracking and hydrogenolysis, are promising for chemical recycling polyolefins to C1-C30 alkanes that can be utilized in petroleum refineries. This thesis aims to develop high-performance catalysts for polyolefin hydroconversion, elucidate the …
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Novel catalytic methods for the upgrading of coal liquids
… been achieved, These materials are designed as hydrocracking catalysts for the upgrading of liquids obtained by the processing of coal. Contact with both coal derived liquids and heavy petroleum resids has demonstrated that these catalysts are superior to established proprietary catalysts in …
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Biofuels Production Via Catalytic Hydrocracking Of Ddgs Corn Oil And Hydrothermal Decarboxylation Of Oleic Acid Over Transition Metal Carbides Supported On Al-Sba-15
… of this work as follow: </p> <p>First, the hydrocracking of distillers dried grains with solubles (DDGS) corn oil over bimetallic carbide catalysts was explored for green diesel production. A catalyst composed of nickel−tungsten (Ni−W) carbide supported on Al-SBA-15 was designed based on the …
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Biofuels production from hydrotreating of vegetable oil using supported noble metals, and transition metal carbide and nitride
… metal carbide/ nitride, and evaluate their hydrocracking activities and selectivities by using soybean oil as the feedstock. For comparison study, catalytic cracking of soybean oil over a commercialized ZSM-5 was investigated. However, steady state could not be reached because significant …
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Catalytic Bitumen Upgrading under Methane Environment
In industrial field, hydrocracking is conventionally used to upgrade crude oil and improve the quality of oil products. However, the high investment cost and strict experimental conditions limit the development of this technology. The utilization of methane, which is naturally available as the …
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Reactor Design for Partial Upgrading of Bitumen via Aquaprocessing
… of this technology. The kinetic parameters for hydrocracking reaction were calculated using first-order rate law expression for the packed bed reactor. Diffusivity of steam in bitumen, dimensionless numbers and hydrodynamic properties of the fluid inside the reactor were calculated using …
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Synthesis and characterisation of pillared clay catalysts for hydro-cracking of heavy liquid fuels
… evaluated with regards to their performance in hydrocracking coal derived liquids in a conventional microbomb reactor (carried out at Imperial College). Nearly all catalysts displayed better conversions when reused. The chromia pillared montmorillonite CM3 and the tin oxide pillared laponite …
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