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dc.creatorCuba Torres, Christian Martin
dc.date.accessioned2015-11-02T19:37:45Z
dc.date.available2015-11-02T19:37:45Z
dc.date.issued2015
dc.identifier.urihttp://hdl.handle.net/2376/5536
dc.descriptionThesis (Ph.D.), Washington State University
dc.description.abstractOn a global scale, the energy demand is largely supplied by the combustion of non-renewable fossil fuels. However, their rapid depletion coupled with environmental and sustainability concerns are the main drivers to seek for alternative energetic strategies. To this end, the sustainable generation of hydrogen from renewable resources such as biodiesel would represent an attractive alternative solution to fossil fuels. Furthermore, hydrogen’s lower environmental impact and greater independence from foreign control make it a strong contender for solving this global problem. Among a wide variety of methods for hydrogen production, the catalytic partial oxidation offers numerous advantages for compact and mobile fuel processing systems. For this reaction, the present work explores the versatility of the Mo–O–C catalytic system under different synthesis methods and reforming conditions using methyl oleate as a surrogate biodiesel. MoO2 exhibits good catalytic activity and exhibits high coke-resistance even under reforming conditions where long-chain oxygenated compounds are prone to form coke. Moreover, the lattice oxygen present in MoO2 promotes the Mars-Van Krevelen mechanism. Also, it is introduced a novel β-Mo2C synthesis by the in-situ formation method that does not utilize external H2 inputs. Herein, the MoO2/Mo2C system maintains high catalytic activity for partial oxidation while the lattice oxygen serves as a carbon buffer for preventing coke formation. This unique feature allows for longer operation reforming times despite slightly lower catalytic activity compared to the catalysts prepared by the traditional temperature-programmed reaction method. Moreover, it is demonstrated by a pulse reaction technique that during the phase transformation of MoO2 to β-Mo2C, the formation of Mo metal as an intermediate is not responsible for the sintering of the material wrongly assumed by the temperature-programmed method.
dc.description.sponsorshipDepartment of Chemical Engineering, Washington State University
dc.languageEnglish
dc.rightsIn copyright
dc.rightsNot publicly accessible
dc.rightsclosedAccess
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/
dc.rights.urihttp://www.ndltd.org/standards/metadata
dc.rights.urihttp://purl.org/eprint/accessRights/ClosedAccess
dc.subjectChemical engineering
dc.subjectMaterials Science
dc.subjectBiodiesel
dc.subjectHydrogen production
dc.subjectMolybdenum carbide
dc.subjectMolybdenum dioxide
dc.subjectPartial Oxidation
dc.subjectSynthesis gas
dc.titleSTUDY OF THE DYNAMICS OF THE MoO2-Mo2C SYSTEM FOR CATALYTIC PARTIAL OXIDATION REACTIONS
dc.typeElectronic Thesis or Dissertation


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