Gürkan Karakaş

E-mail

gkarakas@metu.edu.tr

Department

Department of Chemical Engineering

ORCID

0000-0002-6423-4215

Scopus Author ID

6701735806

Web of Science Researcher ID

ABA-1205-2020

Mathematical modeling of response dynamics of n-type SnO2-based thick film gas sensor Atman, Berkan; Karakaş, Gürkan; Uludağ, Yusuf (2025-05-01) The sensing mechanism of semiconductor metal oxide (SMOX) gas sensors has a complex nature due to the physical and chemical phenomena involved. In this study, a comprehensive transient mathematical model was developed cons...
Kinetic Analysis and Simulation of Dicyclopentadiene/Cyclopentadiene Production by Using Reactive Batch Distillation of Pyrolysis Gasoline Uysal, Deniz Sesli; Kalıpçılar, Halil; Karakaş, Gürkan (2025-01-01) Reactive batch distillation combines the advantages of reactive distillation with the flexibility of batch distillation. In this study, the production of cyclopentadiene by cracking dicyclopentadiene in pyrolysis gasoline ...
Vanadium promoted ZnO films: effects on optical and photocatalytic properties Avşar, Cemre; Karakaş, Gürkan (2023-01-01) The effect of electrodeposition temperature, vanadium doping, and oxidation state of vanadium on the photocatalytic activity of ZnO thin films over ITO substrates were investigated. NH4VO3 aqueous solution was used as prec...
Modelling and simulation of chemical reaction of porous MgCl2 pellets with NH3 by including impact of heat and mass transfer and structure change Helvaci, Zeynep Karakaş; Karakaş, Gürkan; Uludağ, Yusuf (2023-01-01) The MgCl2–NH3 reactive system is investigated in terms of heat and mass transfer coupled with chemical reaction through numerical simulation. The reversible nature of the chemical reaction is captured by including adsorpti...
Methylene Blue Degradation on Praseodymium-Doped Titanium Dioxide Photocatalyst Dogu, Doruk; Karakaş, Gürkan (Journal of the Faculty of Engineering and Architecture of Gazi University, 2020-01-01) In this study, the effects of the praseodymium doping and calcination temperature for titania based catalysts synthesized using a sol-gel method on the photocatalytic methylene blue degradation reaction were investigated. ...
Effect of Drying Conditions on the Characteristics and Performance of B/Fe2O3 Nano-Composites Prepared by Sol-Gel Method Yilmaz, Nil Ezgi Dincer; Karakaş, Gürkan (2020-01-01) B/Fe2O3 samples were prepared by mixing nano sized boron powder with iron oxide xerogels that had been synthesized using a sol-gel method that included various types of proton scavengers such as 1,2-epoxybutane, tetrahydro...
Praseodymium katkılı titanyum dioksit fotokatalizörünün metilen mavisinin bozunma reaksiyonundaki etkinliği DOĞU, Doruk; Karakaş, Gürkan (Journal of the Faculty of Engineering and Architecture of Gazi University, 2019-12-25) Bu çalışmada, sol-gel yöntemiyle hazırlanmış olan titanium dioksit esaslı katalizörlere praseodymium (Pr) katkılanmasının ve kalsinasyon sıcaklığının metilen mavisinin fotokatalitik bozunma reaksiyonundaki etkileri araştır...
Catalytic oxidation of nitrogen containing compounds for nitrogen determination Karakaş, Gürkan (2019-02-15) The high temperature catalytic oxidation (HTCO) performance of Al2O3 supported Pt, Cu, Cu-Ce and Fe catalysts were systematically studied with a perspective of selective oxidation of nitrogenous compounds to nitric oxide f...
INVESTIGATION OF DEEP EUTECTIC SOLVENTS AS REACTION MEDIUM FOR METAL CHLORIDE BASED CHEMICAL HEAT PUMPS Gözde , Ezgi; Dilek Hacıhabiboğlu, Çerağ; Karakaş, Gürkan (null; 2018-09-01) Deep eutectic solvents (DES) are regarded as a new generation of ionic solvents with their unique properties in energy efficiency, safety, cost and environmental friendliness.[1] Theyare systems formed from a eutectic m...
Photocatalytic properties and characterization of praseodymium-doped titanium dioxide DOĞU, Doruk; Karakaş, Gürkan (2018-01-01) In this study, Pr-TiO2 samples were synthesized using a sol-gel method. The effects of the calcination conditions on the structure and photocatalytic activity were examined, and the results are compared with pure TiO2 samp...

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