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Toplam kayıt 37, listelenen: 1-20

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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 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 ...
Catalyst development for hydrocarbon production by carbon monoxide hydrogenation

Erol, Murat. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)

The aim of this work was the development and testing of supported rhodium catalysts for hydrocarbon production by CO hydrogenation. Four different catalysts were prepared by sequential or co-impregnation to incipient wetness ...
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) ...
Cell growth and ethanol production characteristics of immobilized S. cerevisiae in a batch system with nutrient recirculation

Birol, Gülnur (Deniz). (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1992., 1992.)

Recently, there has been world-wide interest in the production of ethanol by fermentation as an alternative to chemical feed stock and as a gasoline extender. Savings in utilities as well as reduction in fixed costs can ...
Characterization and performance analysis of fuel flexible OSR-WGS catalysts

Gökaliler, Feyza. (Thesis (Ph.D.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2012., 2012.)

This research study was conducted in order to acquire insight of an efficient fuel processor (FP) since FPs are believed to represent a key step of transition from conventional to decentralized energy production when ...
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 ...
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 ...
Construction and testing of a bench- scale reactor system for autothermal reforming of methane

Öztürk, İlker. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2009., 2009.)

The major aim of this study was the construction and testing of a bench-scale reactor system suitable for studying the steam reforming (SR) and auto-thermal reforming (ATR) of methane to produce clean hydrogen with high ...
Construction and testing of a low-temperature water-gas shift reaction system

Şen, Özlem. (Thesis (M.S.)-Bogazici University. Institute for Graduate Studies in Science and Engineering, 2008., 2008.)

The objective of this study was to construct and test of a low-temperature water-gas shift reaction system. A system consisting of mass flow controllers for gases, HPLC pump for water, an evaporation and gas-mixing section, ...
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 ...
Determination of heat transfer coefficients in stirred tank systems

Aksan, Devlet. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)

Heat transfer coefficients for helically coiled and continuously stirred tanks were determined using flat paddle turbine impellers. Heat transfer experiments have been carried out by varying the inlet temperature, flowrate ...
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 ...
Drifts study of selective CO oxidation on Au/Al2O3 catalyst

Leba, Aybüke. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 2011., 2011.)

The aim of this study was to investigate the surface species formed during the selective CO oxidation over 1 wt. % Au/Al2O3 catalyst prepared by homogeneous deposition-precipitation method. The surface analyses were carried ...
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 ...
Fermentation and recovery of EcoRI endonuclease using two different genetically engineered E.coli strains

Yıldır (Tamerler), Candan. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1997., 1997.)

A small scale procedure developed for the purification of EcoRI restriction enzyme has been applied to two different overproducing E.coli strains. The final purification yields obtained are 1.3x105 U/g cells for E.coli ...
Fermentation characteristics of four genetically engineered Saccharomyces cerevisiae strains

Birol (Deniz), Gülnur. (Thesis (Ph.D.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1997., 1997.)

The production of ethanol from starch has been investigated in four genetically modified Saccharomyces cerevisiae strains (YPG/AB, YA7, YPG/MM and YPB-G). Three of the four strains produce the Aspergillus awamori glucoamylase ...
Gas chromatographic study of hydrocarbon adsorption on platinum/alumina catalyst

Yıldırım, Ramazan, 1962- (Thesis (M.S.)- Bogazici University. Institute for Graduate Studies in Science and Engineering, 1988., 1988.)

The adsorption of three normal paraffins (n-pentane, n-hexane and n-heptane) and one isoparaffin (i-octane) on the commercial 0.3 %. wt PtJAI03 reforming catalyst were investigated using the elution (or the pulse) technique ...
Gas chromatographic study of hydrogen and hydrocarbon adsorption on platinum/alumina catalyst

Gönenç, Z. Sermin. (Thesis (M.S.) - Bogazici University. Institute for Graduate Studies in Science and Engineering, 1985., 1985.)

The irreversible and the reversible adsorption of hydrogen on commercial 0.3%wt Pt/Aı2O3 reforming catalyst has been studied in a gas-solid chromatograph in the temperature range 74-233 °C and 96-237 °C respectively. The ...

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