Browsing by Author "Avcı, Ahmet Kerim."

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  • A parametric study on catalyst development for glycerol DRY reforming 
    Bilgi, Selin Baç. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2018., 2018.)
    Glycerol reforming to hydrogen and synthesis gas has drawn much attention re cently due to increased glycerol production related with the global biodiesel demand. Among several reforming techniques, dry reforming is more ...
  • A study on catalytic dimethyl ether production from synthesis gas with CO2 
    Altınsoy, Necdet Semih. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2020., 2020.)
    Increasing concerns on the emissions of hazardous species have boosted efforts towards development of cleaner alternatives of the conventional, crude-oils based fuels. In this respect, dimethyl ether (DME) is envisioned ...
  • A study on mathematical modeling of direct synthesis of dimethyl ether in structured membrane reactors 
    Köybaşı, Hayrettin Hasan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2022., 2022)
    Catalytic transformation of CO2 into dimethyl ether (DME) is modeled in a membrane microchannel reactor. The reactor geometry includes an α-Al2O3 supported SOD membrane layer, capable of in-situ H2O removal, residing between ...
  • An experimental study on oxidative coupling of methane over Mn/Na2WO4/SiO2 catalyst 
    Düşova, Yeşim. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The oxidative coupling of methane (OCM) over Mn/Na2WO4/SiO2 catalyst was investigated in this work. The 2wt%Mn/5wt%Na2WO4/SiO2 catalysts were prepared using various methods (such as incipient to wetness impregnation, sol-gel ...
  • Catalyst screening and testing for steam reforming of methane to synthesis gas 
    Aktürk, Nilay. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    The major aim of this study is to investigate the effects of different metals and supports on methane conversion and carbon monoxide selectivity in steam reforming (SR) of methane. The test matrix involves the investigation ...
  • Catalytic microchannel configurations for hydrocracking of Fischer-Tropsch hydrocarbons 
    Hösükoğlu, Mehmet İrfan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)
    Petroleum crude oil is an important commodity as the primary source of energy and petrochemical industry but su ers from decreasing reserves and quality. Hydrocarbon commodities can also be produced synthetically by ...
  • Catalytic oxidation of methane in a microchannel reactor under oxygen-lean conditions 
    Kara, İsmail Bahadır. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    The aim of this study is to investigate methane oxidation in a microchannel reactor under the effect of Pt, Rh and Ru catalysts supported on δ-Al2O3. Methane oxidation is an integrated part of the oxidative steam reforming ...
  • Catalytic synthesis gas production in microchannel reactors 
    Şimşek, Eyüp. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Social Sciences, 2012., 2012.)
    This dissertation presents syngas production from methane by steam and oxidative steam reforming in novel design wall-coated and packed microchannel reactors over δ-Al2O3 supported Ni and precious metal (Rh, Ru, Pd, Pt) ...
  • Ceria coated microchannel reactor for water-gas shift reaction 
    Koca, Begüm. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2016., 2016.)
    In this study, it is aimed to develop a method for coating Pt/CeO2/Al2O3 catalyst onto the FeCrAlY-based wall of a microchannel reactor and to study watergas shift (WGS) in the context of a parametric study. Firstly, the ...
  • Comperative study of low temperature water gas shift reaction over partıculate and monolithic catalysts 
    Tuna, Sevinç. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)
    Low temperature water gas shift (LTWGS) performance of supported Pt-ceria catalysts was investigated over particulate and monolithic structures using both pure and mixed realistic feed compositions in the 225-300oC range. ...
  • Computational and experimental investigation of catalytic hydrocarbon fuel processing for autothermal hydrogen production 
    Avcı, Ahmet Kerim. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2003., 2003.)
    Catalytic conversion of hydrocarbon fuels within the context of the operation of a fuel processor for supplying hydrogen to vehicular and stationary fuel cells is investigated using computer-based modeling/simulation studies ...
  • Development and verification of a two phase reactor model for industrial light naphtha isomerization reactors 
    Acar, Hilal Fidan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Isomerization process is one of the most important chemical processes used in the petroleum industry. Its product is named as the “isomerate” which is the major element of the gasoline pool that compensates for the octane ...
  • Development and verification of an integrated furnace and reactor model for an industrial steam methane reformer 
    Bilir, Emre Can. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    Hydrogen demand in refineries is constantly increasing due to effort on processing heavier crudes and producing higher grade transportation fuels in order to meet increasing demand. In this respect, refineries are investing ...
  • Experimental and computational study of glycerol reforming over wall-coated microchannels 
    Delparish, Amin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2017., 2017.)
    This study aimed to investigate intensified glycerol reforming both experimentally and computationally. In the experimental part, gas phase oxidative steam reforming (OSR) of glycerol is carried out in an in-house designed ...
  • Experimental and quantitative analysis of multiphase catalytic reactions under microfluidic flow conditions and geometries 
    Karakaya, Mustafa. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)
    Catalytic synthesis gas and hydrogen production in coupled and decoupled compact reaction/heat exchange systems are investigated by computational and experimental techniques. Computer-based modeling and simulation studies ...
  • Intensified dimethyl ether production from synthesis gas with CO2 
    Öztürk, Nusret Furkan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2019., 2019.)
    Catalytic conversion of syngas to dimethyl ether (DME) is modeled in a mi crochannel reactor comprised of horizontal groups of rectangular shaped cooling and catalyst washcoated reaction channels involving counter–current ...
  • Investigation of CO hydrogenation catalysts for direct synthesis of dimethyl ether 
    Ekmen, Çiğdem. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The aim of this work was to prepare and test bi-functional direct DME synthesis catalysts, including commercial ones, involving methanol synthesis and methanol dehydration functions. Catalyst beds were prepared by physical ...
  • Investigation of CO hydrogenation catalysts for producing oxygenated hydrocarbons 
    Kabakçı, Didem Büşra. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    The objective of this study was to test the performance of promoted rhodium catalysts supported on silica for oxygenated hydrocarbon (particularly ethanol) production by CO hydrogenation. Two different catalysts were ...
  • Investigation of water gas shift reaction over MOF assisted precious metal catalysts 
    Kavaklı, Hayri Onur. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2014., 2014.)
    Low temperature Water-Gas Shift (WGS) reaction is investigated over MOFsupported Pt/MIL-53(Al) catalysts in 250-300 oC range and steam-to-carbon (S/C) ratios of 1.67, 2.33 and 3. Pt metal loadings of 0.5, 1.0 and 1.5 per ...
  • Microchannel enabled reforming of glycerol to hydrogen over Ni-based catalysts 
    Koç, Sinan. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2015., 2015.)
    The aim of this study is to investigate glycerol steam reforming (GSR) and oxidative glycerol steam reforming (OGSR) over Ni-based catalysts in a microchannel reactor. The parametric study to investigate effects of reaction ...

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