Browsing by Subject "Fuel cells."

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  • A parametric study of selective CO oxidation using particulate and monolithic Pt-Co-CeO2 catalysts 
    Dikman, Funda. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The objective of this thesis was to conduct a parametric study of selective CO oxidation using particulate and monolithic Pt-Co-CeO2 catalyst supported on alumina. In this comparative study, the monolithic catalysts were ...
  • A study on biometallic water gas shift catalysts to be used ın fuel processing 
    Güven, Sabriye. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The aim of this study is to design and develop a Au-based, bimetallic WGS catalyst which has suitable activity and selectivity characteristics to be used in a fuel processor. The catalyst composition, preparation method, ...
  • A theoretical study on the interaction of bimetallic Pt-Ni surface and the reactants of oxidative steam reforming reaction 
    Ercan, Elif. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Pt-Ni bimetallic system is an efficient catalyst for Oxidative Steam Reforming (OSR) reaction; the detailed experimental test results obtained from Pt-Ni system have been already given in literature. In those research ...
  • An experimental study aiming to enhance the performance of OSR of a fuel processor 
    Öztepe, Cihat. (Thesis (M.A.) - Bogazici University. Institute for Graduate Studies in the Social Sciences, 2017., 2017.)
    The aim of this study is to determine the optimum operating parameters of the methane OSR unit of the Fuel Processor Prototype-FPP yielding high methane conversion activity with suppressed H2/CO product selectivity through ...
  • An experimental study on Pt-based bimetallic oxidative steam reforming (OSR) catalysts 
    Göçmen, Bayram Ali. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2010.)
    In the current study, Pt-Ni/Al2O3 system was optimized for catalytic hydrogen production via oxidative steam reforming of propane. Oxidative steam reforming of propane was tested over four Pt-Ni/d-Al2O3 bimetallic and one ...
  • Au-based catalyst design for selective CO oxidation in hddrogen-rich streams 
    Tezcanlı, Sadi T. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The objective of this study was to investigate the selective CO oxidation over Au/ -Al2O3 catalyst modified with various metal oxide promoters (such as Mg, Mn, Fe, Ni, Ce, and Co) in hydrogen-rich environment. All catalysts ...
  • Comparison of the performances of different catalytic reactor types for the water-gas shift reaction using computer simulations 
    İlhan, Nilüfer. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    The low temperature water-gas shift reaction is mathematically modeled for packedbed and monolith reactors by applying mass, energy and momentum balances at steadystate. One-dimensional pseudo-homogeneous and heterogeneous ...
  • Design of bench-scale methane processing reactors for hydrogen-driven PEM fuel cells 
    Maşalacı, Emre. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The steady state behaviour of conversion of methane to hydrogen in the fuel processor system is investigated using computer-based modeling/simulation techniques for use in small scale fuel cell applications. The fuel ...
  • Design, construction and testing of a lab scale fuel processor prototype for dynamic performance studies 
    Başar, Melek Selcen. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2010., 2010.)
    The aim of this study is to design, construct and test a fuel processor prototype for catalyst performance studies under steady-state and dynamic operation conditions. The propane fuel processor consisted of a main oven ...
  • Dynamic simulation of an indirect partial oxidation reactor for methane conversion to hydrogen 
    Karakaya, Mustafa. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2006., 2006.)
    The steady and dynamic behavior of a catalytic indirect partial oxidation (combinedtotal oxidation/steam reforming) reactor for the conversion of methane to hydrogen isinvestigated using computer-based modeling/simulation ...
  • Exergy analysis of combined fuel processor-fuel cell system 
    Şeyban, Cüneyt. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)
    Exergy analysis and energy efficiency of a combined fuel processor-fuel cell system was performed. Experimental data were used for the performances of the ATR, WGS and PROX catalytic reactors assuming that the concentrations ...
  • Experimental and computational study of selective co oxidation over Au/Al2O3 catalyst 
    Davran, Tuğba. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    This study objects the experimental and computational investigation of preferential oxidation of carbon monoxide over Al2O3 supported gold catalysts. In the experimental part of the study, reaction kinetics of CO oxidation ...
  • Kinetics of selective CO oxidation in hydrogen-rich streams over Pt-Co-Ce/Al2O3 catalyst 
    Özyönüm, Göktuğ Nezihi. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    Kinetics of low temperature CO oxidation was studied in hydrogen-rich streams witha realistic gas composition using cobalt and ceria promoted Pt/Al2O3 catalyst prepared byincipient-to-wetness impregnation. All plausible ...
  • Low temperature water gas shift reaction over promoted Pt-based catalysts 
    Akpınar, Fatma. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The aim of this study was to investigate the effects of various second promoters on Pt- Co/Al2O3 and Pt-Ce/Al2O3 catalysts for water gas shift reaction. For this purpose, seven metal oxides were used as the second promoters. ...
  • Modeling of an autothermal heat-integrated wall reactor for simulation of hydrogen production for fuel cell applicayions 
    Biçici, Cihan Banu. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2005., 2005.)
    An autothermal, heat integrated wall reactor model for hydrogen production forvehicular fuel cell applications is investigated using computer-based simulation techniques.The two dimensional reactor model is based on a ...
  • Modeling of catalytic plate reactors for fuel processor seystems 
    Kırçın, Rafet Murat. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The mathematical model of a catalytic plate reactor (CPR) in which hydrogen is produced by two different reaction pairs, namely, exothermic methane total oxidation coupled with either ethanol steam reforming or ethane ...
  • Modeling of methane autothermal reforming in a cylindrical Pt-Ni washcoated reactor 
    Kurdoğlu, Beyza. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The catalytic indirect partial oxidation (combined total oxidation and steam reforming) reactor for the conversion of methane to hydrogen for fuel cell applications is investigated using computer–based modeling techniques ...
  • Numerical investigation of hydrogen production from methane for small scale stationary PEM fuel cell applications 
    Tan, Özgür. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2007., 2007.)
    The steady-state behaviour of the fuel processor system consisting of a catalytic indirect partial oxidation reactor (combined total oxidation/steam reforming), a water-gas shift converter and a preferential carbon monoxide ...
  • Parametric study of water-gas shift reaction over Pt-based catalysts 
    Çağlar, Özgür Yaşar. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    In this study, parametric investigation of low temperature water-gas shift reaction over Pt-based catalysts is carried out. Effects of reaction temperature, feed composition, catalyst particle size and reactor geometry on ...
  • Selective CO oxidation over monolithic Au/Al2O3 promoted by metal oxides 
    Özdemir, Seval. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    The objective of this study was to investigate the preparation methods of cordierite monolithic Au/MgO/Al2O3 catalysts for selective carbon monoxide oxidation in a hydrogen rich environment. In this comparative study, the ...

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