Department of Chemical Engineering

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Çalık, Pınar (124)
Üner, Deniz (88)
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Çelik, Gökhan (65)
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Chemical engineering. (118)
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1964 - 1979 (238)
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Master Thesis (913)
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Recent Submissions

Effect of Pt nanoparticle size on resistance to chloride-induced inhibition for hydrodechlorination of trichloroethylene in water Karahan, Selin; Çelik, Gökhan (2024-04-01) Catalysts used for hydrodechlorination (HDC) of trichloroethylene (TCE) undergo partial or complete loss of catalytic activity due to inhibition by inevitable reaction product HCl. Changing the size of Pt NPs could be used...
Analysis of core velocity in the presence of solids using UDV and improved model for cloud height in stirred tanks Fırat Taşkın, Ahmet; Uludağ, Yusuf; Ayrancı Tansık, İnci (2024-03-05) Formation of cloud height is undesired due to limited mixing between clear liquid and solids rich volume; therefore, an accurate prediction of the cloud height is crucial. In this work, ultrasound Doppler velocimetry was e...
Nanoparticle-Assisted Liquid Crystal Droplet Sensors Enable Analysis of Low-Concentration Species in Aqueous Medium Sezer, Selda; Büküşoğlu, Emre (2024-02-13) We introduce nanoparticle-assisted liquid crystal (LC) droplet-based sensors that allow determination of low-level concentrations of aqueous soluble species. The silica nanoparticles functionalized with mixed monolayers co...
An empirical model for the prediction of cloud height Altıntaş, Ezgi; Ayrancı Tansık, İnci (2024-02-01) At high solids concentrations (>2 vol%), a clear interface appears between solid-rich and liquid-rich parts of a solid-liquid mixing tank. The height of this interface is known as cloud height. The cloud height is one of t...
Phytochemicals in Pancreatic Cancer Treatment: A Machine Learning Study Genc, Destina Ekingen; Ozbek, Ozlem; Oral, Burcu; Yıldırım, Ramazan; İleri Ercan, Nazar (2024-01-09) The discovery of new strategies and novel therapeutic agents is crucial to improving the current treatment methods and increasing the efficacy of cancer therapy. Phytochemicals, naturally occurring bioactive constituents d...
Solids dispersion in high density circulating fluidized beds Külah, Görkem; Bi, X.T.; Lim, C.J.; Grace, J.R. (2024-01-01) Transient local solid tracer concentration distributions were measured by a novel, simple and accurate measurement system with fast response to obtain axial solids dispersion in the riser of a circulating fluidized bed ope...
Physics in deformable spacetime: Physical laws emerging from the surface minimality principle and the masses of particles Gündüz, Güngör (2024-01-01) In this work, the study was focused on how deformable spacetime gives rise to physical laws, particularly quantum and special relativity. It was shown that both the Lorentz factor and quantum mechanics can emerge from the ...
Effects of dead volume and inert sweep gas flow on photocatalytic hydrogen evolution over Pt/TiO2 Can Özcan, Elif; Üner, Deniz; Yildirim, Ramazan (2024-01-01) In this study, the effects of dead volume and sweep gas flow rate on photocatalytic hydrogen production over Pt/TiO2 were examined to determine their possible impact on hydrogen production rates. Five different dead volume...
Nonoxidative dehydrogenation of propane using boron-incorporated silica-supported Pt Sites synthesized by atomic layer deposition Çelik, Gökhan (2024-01-01) Nonoxidative dehydrogenation of propane to propylene using Pt-based supported catalysts is an active research area in catalysis because catalyst attributes of Pt sites can be controlled by careful design of active sites. O...
PdH α-phase is associated with residual oxygen as revealed by in situ 1H NMR measurements and DFT-NMR estimations Mete, Ersen; Yılmaz, Begüm; Üner, Deniz (2023-12-30) An experimental and DFT study was conducted to investigate the chemical nature of α and β PdH phases in Pd/TiO2 through the detailed analysis of their 1H NMR chemical shifts. α-PdH states are identified with shielded 1H NM...
Charge decay in the spatial afterglow of plasmas and its impact on diffusion regimes Abuyazid, Nabiel H.; Üner, Necip Berker; Peyres, Sean M.; Mohan Sankaran, R. (2023-12-01) The spatial afterglow is a region at the boundary of a non-equilibrium plasma where charged species relax into ambient equilibrium. In many applications, the spatial afterglow is the part of the plasma that interacts with ...
Water-Based Route for Dopamine and Reduced Graphene Oxide Aerogel Production Kavak, Öznur; Can, Barış; Bat, Erhan (American Chemical Society (ACS), 2023-11-29) Water pollution caused by domestic waste oil and accidents with oil/organic spill needs immediate remediation, as such a pollution causes serious threats to health and the environment. Development of absorbent materials fo...
Understanding directed assembly of concentrated nanoparticles at energetically heterogeneous interfaces of cholesteric liquid crystal droplets Akman, Ali; Büküşoğlu, Emre (2023-11-01) Colloidal self-assembly has gained significant interest in scientific and technological advances. We investigated the self-assembly of the colloids at fluidic interfaces that mediate elastic interactions. Whereas past stud...
Water-Based Route for Dopamine and Reduced Graphene Oxide Aerogel Production Doğan, Öznur; Can, Barış; Bat, Erhan (2023-11-01)
Axial gas mixing in conical spouted beds with high density particles Güler, Neslin; KÖKSAL, MURAT; Külah, Görkem (2023-10-01) Conical spouted beds operating with high-density particles (ρp > 2500 kg/m3) have recently gained attention because of their potential use as nuclear fuel coaters for next-generation nuclear reactors. In the literature, th...
NMR spektroskopisi ile katalizör katakterizasyonu çalışmaları Üner, Deniz (2023-09-11)
DEVELOPMENT OF MESOPOROUS NICKEL-ZEOLITES FOR CO2 CONVERSION TO METHANE Kızıl, Asena; İpek Torun, Bahar (2023-07-09)
Active Site Candidates for Direct Methane to Methanol Conversion on Fe-MOR Gökçe, İklim; Özbek, Murat Oluş; İpek Torun, Bahar (2023-07-09)
Coarse-grained modeling of polystyrene-modified CNTs and their interactions with lipid bilayers Gul, Gulsah; Faller, Roland; İleri Ercan, Nazar (2023-05-01) In the present work, we describe Martini3 coarse-grained models of polystyrene and carboxyl-terminated polysty-rene functionalized carbon nanotubes (CNTs) and investigate their interactions with lipid bilayers with and wit...
Controlling Cellulose Membrane Performance via Solvent Choice during Precursor Membrane Formation Tekin, Fatma Seden; Çulfaz Emecen, Pınar Zeynep (2023-03-10) Fabrication of cellulose membranes by alkaline hydrolysis of cellulose acetate (CA) membranes is a simple alternative method to preparing cellulose membranes via phase inversion from their ionic liquid solutions. In this s...

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