Rozprawy doktorskie na temat „Methane”
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Squire, Gavin Daniel. "Partial oxidation of methane to methanol and formaldehyde". Thesis, University of Reading, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278072.
Pełny tekst źródłaChellappa, Anand S. "Methane conversion to methanol : homogeneous and catalytic studies /". free to MU campus, to others for purchase, 1997. http://wwwlib.umi.com/cr/mo/fullcit?p9842517.
Pełny tekst źródłaMatthews, Terry. "The Partial Oxidation of Methane to Methanol & Formaldehyde". TopSCHOLAR®, 1987. https://digitalcommons.wku.edu/theses/2602.
Pełny tekst źródłaAfonso, Joana da Costa Franco. "Catalytic hydrogenation of carbon dioxide to form methanol and methane". Master's thesis, Faculdade de Ciências e Tecnologia, 2013. http://hdl.handle.net/10362/10854.
Pełny tekst źródłaOlsson, Susanna. "Dynamics of a spin-forbidden reaction transforming methane to methanol". Thesis, Uppsala universitet, Institutionen för kemi - BMC, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-385895.
Pełny tekst źródłaBorchardt, Lars, Winfried Nickel, Mirian Casco, Irena Senkovska, Volodymyr Bon, Dirk Wallacher, Nico Grimm, Simon Krause i Joaquín Silvestre-Albero. "Illuminating solid gas storage in confined spaces – methane hydrate formation in porous model carbons". Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2017. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-221847.
Pełny tekst źródłaPrince, Bruce M. "The Mechanisms of Methane C–H Activation and Oxy-insertion Via Small Transition Metal Complexes: a DFT Computational Investigation". Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc500116/.
Pełny tekst źródłaYork, Andrew P. E. "Methane conversion chemistry". Thesis, University of Oxford, 1993. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.334954.
Pełny tekst źródłaHammond, Charles Rhodri. "Partial oxidation of methane to methanol using modified mixed metal oxides". Thesis, Cardiff University, 2004. http://orca.cf.ac.uk/54537/.
Pełny tekst źródłaBorchardt, Lars, Winfried Nickel, Mirian Casco, Irena Senkovska, Volodymyr Bon, Dirk Wallacher, Nico Grimm, Simon Krause i Joaquín Silvestre-Albero. "Illuminating solid gas storage in confined spaces – methane hydrate formation in porous model carbons". Royal Society of Chemistry, 2016. https://tud.qucosa.de/id/qucosa%3A30232.
Pełny tekst źródłaModibedi, Remegia Mmalewane. "The catalytic membrane reactor for the conversion of methane to methanol and formaldehyde under mild conditions". Thesis, University of the Western Cape, 2005. http://etd.uwc.ac.za/index.php?module=etd&.
Pełny tekst źródłaGilmore, Rory Alan John. "Developing water and methane potentials for MD simulations of methane clathrate hydrate". Thesis, Queen Mary, University of London, 2018. http://qmro.qmul.ac.uk/xmlui/handle/123456789/41787.
Pełny tekst źródłaThevenin, Philippe. "Catalytic combustion of methane". Doctoral thesis, KTH, Chemical Engineering and Technology, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3402.
Pełny tekst źródłaCatalytic combustion is an environmentally benign technologywhich has recently reached the stage of commercialization.Palladium is the catalyst of choice when considering gasturbines fuelled with natural gas because of its superioractivity for methane oxidation. Several fundamental issues arestill open and their understanding would result in animprovement of the technology. Hence, the work presented inthis thesis aims at the identification of some of theparameters which govern the combustion activity ofpalladium-based catalysts.
The first part of this work gives a background to catalyticcombustion and a brief comparison with other existingtechnologies. Paper I reviews some of the issues related tomaterial development and combustor design.
The second part of this thesis consists of an experimentalinvestigation on palladium-based catalysts. The influence ofthe preparation method onthe properties of these catalystmaterials is investigated in Paper II. Paper III examines theactivity of the following catalysts: Pd/Al2O3, Pd/Ba-Al2O3 andPd/La-Al2O3. Specific attention is given to the metal-supportinteraction which strongly affects the combustion activity ofpalladium. The effect of doping of the support by addition ofcerium is reported in Paper IV.
Finally, the deactivation of combustion catalysts isconsidered. The various deactivation processes which may affecthigh temperature combustion catalysts are reviewed in Paper V.Paper VI focuses on the poisoning of supported palladiumcatalysts by sulphur species. Palladium exhibits a higherresistance to sulphur poisoning than transition metals.Nevertheless, the nature of the support material plays animportant role and may entail a severe loss of activity whensulphur is present in the fuel-air mixture entering thecombustion chamber.
Keywords: catalytic combustion, gas turbine, methane,palladium, alumina, barium, lanthanum, oxidation, preparation,temperature-programmed oxidation (TPO), decomposition,reoxidation, X-ray photoelectron spectroscopy (XPS),metal-support interaction, deactivation, sulphur, poisoning.The cover illustration is a TEM picture of a 100 nm palladiumparticle supported on alumina
Kinjet, Marc Philip. "Methane production from cows". Thesis, University of Reading, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.273714.
Pełny tekst źródłaNarsimhan, Karthik. "Catalytic, low temperature oxidation of methane into methanol over copper-exchanged zeolites". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/109671.
Pełny tekst źródłaCataloged from PDF version of thesis.
Includes bibliographical references (pages 135-147).
As production of shale gas has increased greatly in the United States, the amount of stranded shale gas that is flared as carbon dioxide has become significant enough to be considered an environmental hazard and a wasted resource. The conversion of methane, the primary component of natural gas, into methanol, an easily stored liquid, is of practical interest. However, shale wells are generally inaccessible to reforming facilities, and construction of on-site, conventional methanol synthesis plants is cost prohibitive. Capital costs could be reduced by the direct conversion of methane into methanol at low temperature. Existing strategies for the partial oxidation of methane require harsh solvents, need exotic oxidizing agents, or deactivate easily. Copper-exchanged zeolites have emerged as candidates for methanol production due to high methanol selectivity (> 99%), utilization of oxygen, and low reaction temperature (423-473 K). Despite these advantages, three significant shortcomings exist: 1) the location of surface intermediates on the zeolite is not well understood; 2) methane oxidation is stoichiometric, not catalytic; 3) there are few active sites and methanol yield is low. This work addresses all three shortcomings. First, a new reaction pathway is identified for methane oxidation in copper-exchanged mordenite zeolites using tandem methane oxidation and Koch carbonylation reactions. Methoxy species migrate away from the copper active sites and adsorb onto Bronsted acid sites, signifying spillover on the zeolite surface. Second, a process is developed as the first instance of the catalytic oxidation of methane into methanol at low temperature, in the vapor phase, and using oxygen as the oxidant. A variety of commercially available copper-exchanged zeolites are shown to exhibit stable methanol production with high methanol selectivity. Third, catalytic methanol production rates and methane conversion are further improved 100- fold through the synthetic control of copper speciation in chabazite zeolites. Isolated monocopper species, directed through the one-pot synthesis of copper-exchanged chabazite zeolites, correlates with methane oxidation activity and is likely the precursor to the catalytic site. Together, these synthetic methods provide guidelines for catalyst design and further improvements in catalytic activity.
by Karthik Narsimhan.
Ph. D.
Taylor, Stuart Hamilton. "The design of new catalysts for the partial oxidation of methane to methanol". Thesis, University of Liverpool, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.260339.
Pełny tekst źródłaHamdan, Abdullah. "Infrared spectroscopy of methane dimer". [S.l.] : [s.n.], 2005. http://deposit.ddb.de/cgi-bin/dokserv?idn=978829921.
Pełny tekst źródłaGalbraith, Jayson Kent. "Methane production in native ruminants". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq22596.pdf.
Pełny tekst źródłaEl, Solh Tarek. "Heterogeneous catalyst for methane reforming". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/tape17/PQDD_0007/MQ30748.pdf.
Pełny tekst źródłaMann, Kenneth R. C. "Premixed ammonia-methane-air combustion". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ62250.pdf.
Pełny tekst źródłaKumarasamy, Puvaneswary. "Heterogeneous catalysis for methane oxidation". Thesis, Brunel University, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.326890.
Pełny tekst źródłaAshcroft, Alexander T. "Methane conversion over oxide catalysts". Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.305983.
Pełny tekst źródłaWang, David Texan. "The geochemistry of methane isotopologues". Thesis, Massachusetts Institute of Technology, 2017. http://hdl.handle.net/1721.1/111690.
Pełny tekst źródłaThis electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.
Cataloged from student-submitted PDF version of thesis.
Includes bibliographical references (pages 123-143).
This thesis documents the origin, distribution, and fate of methane and several of its isotopic forms on Earth. Using observational, experimental, and theoretical approaches, I illustrate how the relative abundances of ¹²CH₄, ¹³CH₄, ¹²CH₃D, and ¹³CH₃D record the formation, transport, and breakdown of methane in selected settings. Chapter 2 reports precise determinations of ¹³CH₃D, a "clumped" isotopologue of methane, in samples collected from various settings representing many of the major sources and reservoirs of methane on Earth. The results show that the information encoded by the abundance of ¹³CH₃D enables differentiation of methane generated by microbial, thermogenic, and abiogenic processes. A strong correlation between clumped- and hydrogen-isotope signatures in microbial methane is identified and quantitatively linked to the availability of H₂ and the reversibility of microbially-mediated methanogenesis in the environment. Determination of ¹³CH₃D in combination with hydrogen-isotope ratios of methane and water provides a sensitive indicator of the extent of C-H bond equilibration, enables fingerprinting of methane-generating mechanisms, and in some cases, supplies direct constraints for locating the waters from which migrated gases were sourced. Chapter 3 applies this concept to constrain the origin of methane in hydrothermal fluids from sediment-poor vent fields hosted in mafic and ultramafic rocks on slow- and ultraslow-spreading mid-ocean ridges. The data support a hypogene model whereby methane forms abiotically within plutonic rocks of the oceanic crust at temperatures above ca. 300 °C during respeciation of magmatic volatiles, and is subsequently extracted during active, convective hydrothermal circulation. Chapter 4 presents the results of culture experiments in which methane is oxidized in the presence of O₂ by the bacterium Methylococcus capsulatus strain Bath. The results show that the clumped isotopologue abundances of partially-oxidized methane can be predicted from knowledge of ¹³C/¹²C and D/H isotope fractionation factors alone.
by David Texan Wang.
Ph.D. in Geochemistry
He, Li. "Catalytic Methane Combustion in Microreactors". Thesis, Nantes, 2020. http://www.theses.fr/2020NANT4026.
Pełny tekst źródłaThe current thesis deals with the catalytic methane combustion in microreactors with wall-coated Pt/γ-Al2O3 catalyst. The Pt/γ-Al2O3 washcoat preparation, the single- and multi-layer catalytic coating systems, and the different designs of microreactor geometries were particularly investigated. Various aspects were thus addressed, including the preparation procedures of the catalyst coating (e.g., the binder properties, pH value, initial Al2O3 particle size), the optimization of different reaction conditions with single- and multi-layer coating systems (e.g., temperature, flow rate, O2/CH4 molar ratio, Pt loading and coating thickness), the effect of internal channel configurations in the microreactor (i.e., involving straight parallel channels, cavity, double serpentine channels, obstacled parallel channels, meshed circuit and vascular network) on the reaction performance
Penteado, Paulo Fernando. "Study of Titan's Methane Cycle". Diss., The University of Arizona, 2009. http://hdl.handle.net/10150/194314.
Pełny tekst źródłaWallar, Bradley James. "Probing the interactions between component B and the hydroxylase of methane monooxygenase /". Diss., ON-CAMPUS Access For University of Minnesota, Twin Cities Click on "Connect to Digital Dissertations", 2000. http://www.lib.umn.edu/articles/proquest.phtml.
Pełny tekst źródłaBalan, Huseyin Onur. "Modeling The Effects Of Variable Coal Properties On Methane Production During Enhanced Coalbed Methane Recovery". Master's thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/12609622/index.pdf.
Pełny tekst źródłaMaråk, Knut Arild. "Condensation Heat Transfer and Pressure Drop for Methane and Binary Methane Fluids in Small Channels". Doctoral thesis, Norges teknisk-naturvitenskapelige universitet, Institutt for energi- og prosessteknikk, 2009. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-5702.
Pełny tekst źródłaKonvensjonelle varmevekslarar nyttar kanalar med diameter ned til omlag 3 mm. I desse er fenomena kring varmeovergang og trykktap i stor grad kjende. Nyare og meir kompakte varmevekslarar har kanalar med mindre diameter som inneber ei rekkje fordelar; dei tek mindre plass, er lettare og kan vere raskare og billigare å produsere. Det herskar imidlertid uvisse om fenomena kring varmeovergang og trykktap er dei same som i konvensjonelle kanalar. Å få dette avklart i høve til mogleg bruk i LNG-industrien har vore hovudføremålet med arbeidet. Eit eksperimentelt oppsett designa av Steffen Grohmann vart brukt i undersøkjingane. Tilsaman 749 m˚alingar i røyr med diameter 1 mm, 0.5 mm og 0.25 mm vart utført. Både einfase kjøling og kondensasjon av metan og blandingar av metan/etan og metan/nitrogen vart gjort. Målingane varierte over eit stort omr˚ade med omsyn til trykk, dampfraksjon, massefluks og varmefluks. Ogs˚a trykkfall gjennom røyra vart målt. Resultata viser at varmeovergang i einfase veske kan forutseiast med eksisterande modellar i 1 mm og 0.5 mm røyra. Trykkfallsmålingane for 1 mm royret er som forventa utifr˚a konvensjonelle modellar. For 0.5 mm røyret er trykkfallet høgare enn forventa. For 0.25-mm røyret er uvissa for stor til at resultata kan brukast i ein konklusjon. For kondensering av rein metan kan varmeovergangen i 1 mm-røyret forutseiast med konvensjonelle modellar. I 0.5 mm røyret er varmeovergangen høgare enn berekna. For kondensering av binære blandingar kan varmeovergangen bereknast med konvensjonelle modellar for både 1 mm og0.5 mm royret. For tofasemålingar i 1 mm-røyret er den gjennomsnittlege uvissa for varmeovergang rundt 10 % og hovudsakleg knytt til temperatursensorane. For 0.5 mm røyret er uvissa for kondensering av rein metan litt over 20 %, medan den er rundt 10 % for kondensering av binarblandingane. For 0.5 mm-royet og sarskilt for 0.25 mm-røyret er massestraumsmålaren ei mykje viktigare kjelde til uvisse.
Hayes, Jonathan George. "The Methane Range: Coalbed Methane Development, Sage-Grouse protection, and The Ranching Way of Life". The University of Montana, 2009. http://etd.lib.umt.edu/theses/available/etd-12192008-143539/.
Pełny tekst źródłaMcMahon, Sean. "Mars, methane and microbes : deep biospheres and other sources of methane on Earth and Mars". Thesis, University of Aberdeen, 2014. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?pid=214837.
Pełny tekst źródłaBoulart, Cedric. "Methane in deep sea hydrothermal plumes : development of a new in-situ methane sensing technology". Thesis, University of Southampton, 2008. https://eprints.soton.ac.uk/65667/.
Pełny tekst źródłaMiyajima, Yusuke. "Origin of methane at ancient methane seeps inferred from organic geochemical signatures in seep carbonates". Kyoto University, 2018. http://hdl.handle.net/2433/232261.
Pełny tekst źródłaRandall, William Sanford. "How Methane Made the Mountain: The Material Ghost and the Technological Sublime in Methane Ghosts". The Ohio State University, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=osu1460722538.
Pełny tekst źródłaHayes, Jonathan George. "The methane range coalbed methane development, sage-grouse protection, and the ranching way of life /". [Missoula, Mont.] : The University of Montana, 2008. http://etd.lib.umt.edu/theses/available/etd-12192008-143539/unrestricted/TheMethaneRange.pdf.
Pełny tekst źródłaTitle from author supplied metadata. Description based on contents viewed on June 20, 2009. ETD number: etd-12192008-143539. Includes bibliographical references.
Storch, Henrik von Verfasser], Bernhard [Akademischer Betreuer] Hoffschmidt i André [Akademischer Betreuer] [Bardow. "Methanol production via solar reforming of methane / Henrik von Storch ; Bernhard Hoffschmidt, André Bardow". Aachen : Universitätsbibliothek der RWTH Aachen, 2016. http://d-nb.info/1126040878/34.
Pełny tekst źródłaThorn, Garrick J. S. "Development of an Immobilized Nitrosomonas europaea Bioreactor for the Production of Methanol from Methane". Thesis, University of Canterbury. Chemical and Process Engineering, 2006. http://hdl.handle.net/10092/1867.
Pełny tekst źródłaFratesi, Guido. "Low temperature methane-to-methanol conversion on transition metal surfaces. An ab initio study". Doctoral thesis, SISSA, 2005. http://hdl.handle.net/20.500.11767/4087.
Pełny tekst źródłaNealon, Jeffrey W. "Dynamics of methane migration in marine hydrate systems examples from the Guaymas Transform, Blake Ridge, and Storegga landslide /". Laramie, Wyo. : University of Wyoming, 2006. http://proquest.umi.com/pqdweb?did=1188873751&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Pełny tekst źródłaGuan, Xiangguo. "The photochemistry of polyhalomethanes in water and the water-catalyzed dehalogenation reactions of selected isopolyhalomethanes, halogenated methanols and halogenated formaldehydes". Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B38718960.
Pełny tekst źródłaGuan, Xiangguo, i 官向國. "The photochemistry of polyhalomethanes in water and the water-catalyzed dehalogenation reactions of selected isopolyhalomethanes,halogenated methanols and halogenated formaldehydes". Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B38718960.
Pełny tekst źródłaRiekie, Gail Jocelyn. "Can methane be oxidised anaerobically in soil?" Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=59018.
Pełny tekst źródłaJin, Qinghua. "GASMAK2 model for longwall gob gas emission". Morgantown, W. Va. : [West Virginia University Libraries], 2002. http://etd.wvu.edu/templates/showETD.cfm?recnum=2706.
Pełny tekst źródłaTitle from document title page. Document formatted into pages; contains x, 93 p. : ill. (some col.). Vita. Includes abstract. Includes bibliographical references (p. 71-72).
Bräunlich, Maya. "Study of atmospheric carbon monoxide and methane Untersuchung von atmosphärischen Kohlenmonoxid und Methan anhand von Isotopenmessungen /". [S.l. : s.n.], 2000. http://www.bsz-bw.de/cgi-bin/xvms.cgi?SWB8832641.
Pełny tekst źródłaGraham, Andrew W. "Methane along the western Mexican margin". Thesis, University of Hawaii at Manoa, 2003. http://hdl.handle.net/10125/6976.
Pełny tekst źródłaviii, 66 leaves
Mpuhlu, Batsho. "Synthesis of P-Methane-3,8-Diol". Thesis, Nelson Mandela Metropolitan University, 2007. http://hdl.handle.net/10948/570.
Pełny tekst źródłaBrown, Ann. "Methane production in Canadian muskeg bogs". Thesis, University of Ottawa (Canada), 1989. http://hdl.handle.net/10393/21229.
Pełny tekst źródłaAlBanna, Muna. "Methane oxidation in landfill cover soil". Thesis, University of Ottawa (Canada), 2005. http://hdl.handle.net/10393/26834.
Pełny tekst źródłaKarimi, Kaveh Petroleum Engineering Faculty of Engineering UNSW. "Coal bed methane reservoir simulation studies". Awarded by:University of New South Wales. School of Petroleum Engineering, 2005. http://handle.unsw.edu.au/1959.4/22449.
Pełny tekst źródłaDong, Yan. "Reducing methane emissions from ruminant animals". Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ34756.pdf.
Pełny tekst źródłaKonieczny, Agnieszka. "Hydrogen by thermocatalytic decomposition of methane /". Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1240703551&sid=4&Fmt=2&clientId=1509&RQT=309&VName=PQD.
Pełny tekst źródła"Department of Mechanical Engineering and Energy Processes." Includes bibliographical references (leaves 76-80). Also available online.