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Dissertations / Theses on the topic 'Spent catalytic cracking catalyst'

Author: Grafiati

Published: 29 September 2021

Last updated: 30 July 2025

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1

Martes, Hernández Leonela. "Catalytic cracking of tar model compounds using biochar as catalyst." Electronic Thesis or Diss., Normandie, 2025. http://www.theses.fr/2025NORMIR02.

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Cette thèse se concentre sur l'étude du craquage catalytique des goudrons, qui sont des substances pouvant être produites avec le gaz de synthèse et le biochar pendant la gazéification de la biomasse. Les goudrons constituent un des principaux obstacles à l’utilisation du gaz de synthèse dans certains procédés industriels en raison des difficultés techniques liées à leur présence (obstruction, condensation, réduction de l'efficacité énergétique, etc.). Le craquage catalytique est une technique de choix pour transformer ces goudrons, composés d’hydrocarbures lourds (C6, C7, C8, etc.) en espèces

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2

Bayraktar, Oguz. "Effect of pretreatment on the performance of metal contaminated commercial FCC catalyst." Morgantown, W. Va. : [West Virginia University Libraries], 2001. http://etd.wvu.edu/templates/showETD.cfm?recnum=2071.

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Thesis (Ph. D.)--West Virginia University, 2001.<br>Title from document title page. Document formatted into pages; contains xvi, 214 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 199-208).

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3

Madadkhani, Shiva. "Red mud as an iron-based catalyst for catalytic cracking of naphthalene." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/60118.

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Reducing the tar content in the producer gas of biomass gasification processes remains one of the main challenges in the commercialization of this technology and, hence, the development of clean and economical tar-removing technologies is becoming increasingly important. Catalytic tar removal has the advantage of avoiding expensive gas cleaning systems while maintaining the sensible heat in the producer gas. Commercial catalysts based on noble metals and metal oxides have shown good activity towards tar destruction, but are prone to rapid deactivation. This in addition to the high replacement

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4

Beskari, Mohamed Ali. "Dynamic analysis of diffusion and convection in porous catalysts." Thesis, University of Salford, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.244857.

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5

Villca, Pozo Ariel Rey. "Utilización de geopolímero para la mejora de las propiedades en morteros cal-puzolana y su empleo en países en desarrollo." Doctoral thesis, Universitat Politècnica de València, 2021. http://hdl.handle.net/10251/172663.

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[ES] El descubrimiento del cemento Portland ha cambiado nuestra forma de construir, pero también es el responsable de grandes emisiones de CO2 a la atmósfera durante su fabricación (~1450 ᴼC), agravando la crisis actual que está sufriendo nuestro planeta debido al cambio climático y sus consecuencias en todo el medio ambiente. Por lo tanto, una alternativa más sostenible en la construcción es la utilización de la cal que necesita menor temperatura para su fabricación (~900 ᴼC). Si bien la introducción de puzolanas naturales o artificiales en morteros de cal han mejorado sus propiedades mec

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6

Whitcombe, Joshua Matthew, and n/a. "Study of Catalyst Particle Emissions From a Fluidized Catalytic Cracker Unit." Griffith University. School of Environmental Engineering, 2003. http://www4.gu.edu.au:8080/adt-root/public/adt-QGU20031003.152200.

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The control of particle emissions from an oil refinery is often difficult, due to changing operational conditions and the limited range of available treatment options. Excessive particle emissions have often been attributed start up problems with Fluidized Catalytic Cracker Units (FCCU) and little information is available regarding the exact composition and nature of these excessive emissions. Due to the complex nature of a FCCU, it has in the past been difficult to identify and control emissions, without the use of expensive end of pipe technologies. An Australian Oil Refinery, concerned wi

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7

Whitcombe, Joshua Matthew. "Study of Catalyst Particle Emissions From a Fluidized Catalytic Cracker Unit." Thesis, Griffith University, 2003. http://hdl.handle.net/10072/367301.

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The control of particle emissions from an oil refinery is often difficult, due to changing operational conditions and the limited range of available treatment options. Excessive particle emissions have often been attributed start up problems with Fluidized Catalytic Cracker Units (FCCU) and little information is available regarding the exact composition and nature of these excessive emissions. Due to the complex nature of a FCCU, it has in the past been difficult to identify and control emissions, without the use of expensive end of pipe technologies. An Australian Oil Refinery, concerned wi

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8

Bruening, Christopher. "Decalin Dehydrogenation for In-Situ Hydrogen Production to Increase Catalytic Cracking Rate of n-Dodecane." University of Dayton / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1525100991525704.

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9

Al-Rubaye, Rana. "Generation and characterisation of catalytic films of zeolite Y and ZSM-5 on FeCrAlloy metal." Thesis, University of Manchester, 2013. https://www.research.manchester.ac.uk/portal/en/theses/generation-and-characterisation-of-catalytic-films-of-zeolite-y-and-zsm5-on-fecralloy-metal(de743286-52bd-4922-8de7-9a261283b6e5).html.

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The objective of this work was the development of structured zeolite catalysts by growing of ZSM-5 and Y zeolites layers on the pre-treated FeCrAlloy wires, which could now offer technical advantage in catalytic application. The advantages of implementation of zeolitic coatings in industrial applications are that they have; lower pressure drop, high heat and mass transfer rates compared to standard pelleted or extruded catalysts. The key focus of this research was the generation of thin films of zeolite ZSM–5 and Y zeolite catalysts on the surface of a FeCrAlloy metal substrate. Using in-situ

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10

Pashikanti, Kiran. "Predictive Modeling of Large-Scale Integrated Refinery Reaction and Fractionation Systems from Plant Data: Fluid Catalytic Cracking (FCC) and Continuous Catalyst Regeneration (CCR) Catalytic Reforming Processes." Diss., Virginia Tech, 2011. http://hdl.handle.net/10919/77181.

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This dissertation includes two accounts of rigorous modeling of petroleum refinery modeling using rigorous reaction and fractionation units. The models consider various process phenomena and have been extensively used during a course of a six-month study to understand and predict behavior. This work also includes extensive guides to allow users to develop similar models using commercial software tools. (1) Predictive Modeling of Large-Scale Integrated Refinery Reaction and Fractionation Systems from Plant Data: Fluid Catalytic Cracking (FCC) Process with Planning Applications: This work presen

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11

Smith, Bradley Joseph. "Steam-Assisted Catalysis of n-Dodecane as a Jet Fuel Analogue in a Flow Reactor System for Hypersonic Thermal Management." University of Dayton / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=dayton1577978953025703.

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12

Lucar, Monzón Edgar Manuel. "Estudo da dinâmica do escoamento gás-sólido em resfriadores de catalisador de FCC usando fluidodinâmica computacional (CFD)." Universidade Federal de São Carlos, 2017. https://repositorio.ufscar.br/handle/ufscar/8834.

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Submitted by Aelson Maciera (aelsoncm@terra.com.br) on 2017-06-05T18:05:00Z No. of bitstreams: 1 DissEMLM.pdf: 4999609 bytes, checksum: 95744c602244ec5bde3892ae1ab471e5 (MD5)<br>Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-06-05T18:19:12Z (GMT) No. of bitstreams: 1 DissEMLM.pdf: 4999609 bytes, checksum: 95744c602244ec5bde3892ae1ab471e5 (MD5)<br>Approved for entry into archive by Ronildo Prado (ronisp@ufscar.br) on 2017-06-05T18:19:18Z (GMT) No. of bitstreams: 1 DissEMLM.pdf: 4999609 bytes, checksum: 95744c602244ec5bde3892ae1ab471e5 (MD5)<br>Made available in

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13

Lin, Liming. "Craquages d'alcanes sur catalyseurs zeolithiques : influence du nickel et du vanadium." Poitiers, 1987. http://www.theses.fr/1987POIT2316.

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14

Zyade, Souâd. "Contribution a l'etude des mecanismes de reactions des hydrocarbures sur catalyseurs mono et bimetalliques (pt et pt::(x)co::(1-x)) : correlation avec des taux en residus hydrocarbones et les structures metalliques de surface." Université Louis Pasteur (Strasbourg) (1971-2008), 1987. http://www.theses.fr/1987STR13034.

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15

MONTES, RENDON ARTURO. "Préparation et propriétés catalytiques de métaux de transition sur mordenité." Poitiers, 1987. http://www.theses.fr/1987POIT2037.

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16

FANG, BING-XUN, and 方炳勳. "Studies on the use of fluidized catalytic cracking spent catalyst." Thesis, 1990. http://ndltd.ncl.edu.tw/handle/32873101500253023988.

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17

Hardiman, Kelfin Martino Chemical Sciences &amp Engineering Faculty of Engineering UNSW. "Propane reforming under carboninduced deactivation: catalyst design and reactor operation." 2007. http://handle.unsw.edu.au/1959.4/40745.

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Steam reforming is the most economical and widely-used route for the conversion of light hydrocarbon (such as natural gas) to various valued-added products. This process is commonly carried out over a low-cost alumina-supported nickel catalyst, which often suffers from carbon deposition resulting in loss of active sites, flow and thermal maldistribution, as well as excessive pressure drop. A bimetallic catalyst with improved anti-coking properties was formulated by incorporating the nickel-based system (15% loading) with cobalt metal (5% loading). Two-level factorial design was employed to in

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18

Zainuddin, Zainurlis. "The use of synthetic zeolites in catalysis." Thesis, 1995. https://eprints.utas.edu.au/21962/1/whole_ZainuddinZainurlis1996_thesis.pdf.

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This study reports on investigations into the use of synthetic zeolites in catalysis in an attempt to design catalyst systems which have size and shape selectivity. Zeolites have been widely used in petroleum refineries as acid catalysts. This has led to the field of study known as "shape selective catalysis", since the product distribution is limited to those molecules which can pass through the zeolite channel. In this study, zeolites have been used both as an acid catalyst for the cracking of hydrocarbons, and as a catalyst support for a cationic palladium complex. n-Octane and 2-me

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19

Amin, Ashraf Mukhtar Lotfi. "Modelling and Experimental Study of Methane Catalytic Cracking as a Hydrogen Production Technology." Thesis, 2011. http://hdl.handle.net/10012/5949.

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Production of hydrogen is primarily achieved via catalytic steam reforming, partial oxidation,and auto-thermal reforming of natural gas. Although these processes are mature technologies, they are somewhat complex and CO is formed as a by-product, therefore requiring a separation process if a pure or hydrogen-rich stream is needed. As an alternative method, supported metal catalysts can be used to catalytically decompose hydrocarbons to produce hydrogen. The process is known as catalytic cracking of hydrocarbons. Methane, the hydrocarbon containing the highest percentage of hydrogen, can be use

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20

Chen, Chun-Ming, and 陳均銘. "Production of carbon nanotubes with controllable diameter by catalytic cracking of methane using Fe@Al2O3 core-shell catalyst." Thesis, 2018. http://ndltd.ncl.edu.tw/handle/8w2rvu.

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碩士<br>國立中興大學<br>環境工程學系所<br>106<br>In this study, we used a novel core-shell catalyst to catalyze methane cracking reaction for the production of carbon nanotubes. We found that the carbon nanotubes with a controllable diameter can be produced by tuning the pore size of the shell. A novel and simple synthetic approach toward core–shell Fe@Al2O3 nanoparticles was developed in this study. Fe@Al2O3 nanostructures were formed by the immersion of Fe@C nanoparticles with Al precursor in deionized water. The as-synthesized core-shell catalyst was applied to convert the methane into carbon nanotubes. T

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21

Santos, Bjorn Sanchez. "Liquid-phase Processing of Fast Pyrolysis Bio-oil using Pt/HZSM-5 Catalyst." Thesis, 2013. http://hdl.handle.net/1969.1/149605.

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Recent developments in converting biomass to bio-chemicals and liquid fuels provide a promising sight to an emerging biofuels industry. Biomass can be converted to energy via thermochemical and biochemical pathways. Thermal degradation processes include liquefaction, gasification, and pyrolysis. Among these biomass technologies, pyrolysis (i.e. a thermochemical conversion process of any organic material in the absence of oxygen) has gained more attention because of its simplicity in design, construction and operation. This research study focuses on comparative assessment of two types of pyroly

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22

(11150073), Abhijit D. Talpade. "Pyrolysis based processing of biomass and shale gas resources to fuels and chemicals." Thesis, 2021.

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<div>Thermochemical processing using fast-pyrolysis technology has been used to upgrade feedstocks like biomass and natural gas and more recently studied for plastic recycling. This work aims to improve the selectivity to desired products from a pyrolysis process through better catalysts and reactor design.</div><div>Fast-pyrolysis of biomass to fuels is considered a promising technology due to the higher yields to liquid fuel products. However, the process suffers from low carbon efficiency to hydrocarbon products due to carbon losses to biochar, accounting for 25-40 wt.% of the product strea

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