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dc.contributor.authorPrabhu, Anil K.en_US
dc.date.accessioned2014-03-14T20:08:12Z
dc.date.available2014-03-14T20:08:12Z
dc.date.issued2003-03-13en_US
dc.identifier.otheretd-03142003-171853en_US
dc.identifier.urihttp://hdl.handle.net/10919/26430
dc.description.abstractSupported Ni and Rh catalysts were developed for the reforming of two greenhouse gases, methane and carbon dioxide to syngas (a mixture of hydrogen and carbon monoxide). This is an endothermic, equilibrium limited reaction. To overcome the thermodynamic limitations, a commercially available porous membrane (Vycor glass) was used in a combined reactor-separator configuration. This was to selectively remove one or more of the products from the reaction chamber, and consequently shift the equilibrium to the right. However, the separation mechanism in this membrane involved Knudsen diffusion, which provided only partial separations. Consequently, there was some transport of reactants across the membrane and this led to only marginal improvements in performance. To overcome this limitation, a new membrane was developed by modifying the Vycor substrate by the chemical vapor deposition of a silica precursor. This new membrane, termed Nanosil, provided high selectivity to hydrogen at permeabilities comparable to the support material. Application of this membrane in the combined reactor-separator unit provided higher conversions than that obtained using the Vycor membrane.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartcomplete3.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectMathematical Modelen_US
dc.subjectVycor Membraneen_US
dc.subjectHydrogen Selective Nanosil Membraneen_US
dc.subjectMembrane Reactoren_US
dc.subjectDry Reformingen_US
dc.subjectNickel and Rhodium Catalystsen_US
dc.titleCatalytic Transformation of Greenhouse Gases in a Membrane Reactoren_US
dc.typeDissertationen_US
dc.contributor.departmentChemical Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineChemical Engineeringen_US
dc.contributor.committeechairOyama, Shigeo Teden_US
dc.contributor.committeememberCox, David F.en_US
dc.contributor.committeememberDavis, Richey M.en_US
dc.contributor.committeememberMarand, Evaen_US
dc.contributor.committeememberHanson, Brian E.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03142003-171853/en_US
dc.date.sdate2003-03-14en_US
dc.date.rdate2004-04-04
dc.date.adate2003-04-04en_US


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