Necati Özkan

E-mail

nozkan@metu.edu.tr

Department

Graduate School of Natural and Applied Sciences

ORCID

0000-0002-7837-3152

Scopus Author ID

7003510209

Web of Science Researcher ID

E-6186-2011

High-temperature electrochemical hydrogen separation from reformate gases using PBI/MOF composite membrane Bulanık Durmuş, Gizem Nur; Eren, Enis Oğuzhan; Devrim, Yılser; ÇOLPAN, CAN ÖZGÜR; Özkan, Necati (2023-01-01) In this paper, the high-temperature electrochemical Hydrogen (H2) purification performance of a polybenzimidazole/UIO-66 metal-organic framework (PBI/UIO-66) membrane is investigated and analyzed at different values of cur...
Enhancing the performance of HTPB-IPDI-based polyurethane composite liner through effective carbon black dispersion**

Aslan, Onurcan; Atalar, Taner; Atınç Yılmaz, Gürkan; Özkan, Necati (2023-01-01)

This study aims to improve the dispersion of Carbon Black (CB) filled Hydroxyl-Terminated Polybutadiene (HTPB)-Isophorone Diisocyanate (IPDI) based polyurethane liner by both adding a dispersant and developing a production...
3D printing of crude lignocellulosic biomass extracts containing hemicellulose and lignin Gokce Bahcegul, E.; Bahcegul, Erinc; Özkan, Necati (2022-10-15) © 2022 Elsevier B.V.Using lignocellulosic biomass, which is composed mainly of cellulose, hemicellulose and lignin, as a biopolymer resource in various polymeric material applications is an attractive option due to its abu...
Preparation of polybenzimidazole/ZIF-8 and polybenzimidazole/UiO-66 composite membranes with enhanced proton conductivity Eren, Enis Oğuzhan; Özkan, Necati; Devrim, Yılser (2022-05-26) © 2021 Hydrogen Energy Publications LLCMetal-organic frameworks (MOFs) are considered emerging materials as they further improve the various properties of polymer membranes used in energy applications, ranging from electro...
ELECTROCHEMICAL HYDROGEN SEPARATION FROM REFORMATE USING POLYBENZIMIDAZOLE/MOF COMPOSITE MEMBRANES Durmuş, Gizem Nur Bulanık; Eren, Enis Oğuzhan; Devrim, Yılser; Çolpan, Can Özgür; Özkan, Necati (2022-01-01) This study introduces the experimental results of a high-temperature electrochemical hydrogen purification (ECHP) cell through poly 2.2-m-phenylene-5.5-bibenzimidazole/metal organic framework (PBI/MOF) composite membranes ...
Polybenzimidazole-modified carbon nanotubes as a support material for platinum-based high-temperature proton exchange membrane fuel cell electrocatalysts Eren, Enis Oguzhan; Özkan, Necati; DEVRİM, YILSER (2021-08-01) We fabricate polybenzimidazole (PBI) wrapped carbon nanotubes (MWCNTs) as support material for platinum-based fuel cell electrocatalyst. With the aid of microwave-assisted polyol reduction, we obtain very fine platinum (Pt...
Development of non-noble Co–N–C electrocatalyst for high-temperature proton exchange membrane fuel cells Eren, Enis Oğuzhan; Özkan, Necati; Devrim, Yılser (Elsevier BV, 2020-11-27) © 2020 Hydrogen Energy Publications LLCThe development of a non-noble Co–N/MWCNT (MWCNT = multi-walled carbon nanotubes) electrocatalyst is achieved through the high-temperature pyrolysis method and successfully characteri...
3D Printing of Hemicellulosic Biopolymers Extracted from Lignocellulosic Agricultural Wastes Bahcegul, E. Gokce; Bahcegul, Erinc; Özkan, Necati (2020-07-01) Despite being one of the most abundant biopolymers found in nature after cellulose, hemicellulose is still an underutilized biopolymer. Using this abundant biopolymer in 3D printing applications has a lot of potential, but...
Evaluation of the Properties of Corn Cob Hemicellulose Based Biodegradable Films Obtained by Extrusion and Solvent Casting Methods Akınalan Balık, Büşra; Özkan, Necati; Bölükbaşı, Ufuk (2019-05-28) The remarkable consumption and environmental concerns related to the utilization of fossil based resources have led researchers to focus on renewable raw materials. Lignocellulosic biomass, the fibrous part of plants...
Efficient Acetylation of Xylans by Exploiting the Potassium Acetate Formed During the Alkaline Extraction AKKUS, Merve; Özkan, Necati; BAKIR, Ufuk (2018-08-01) Isolation of hemicelluloses through alkaline extraction results in formation of salts, which usually necessitates additional salt removal steps. In this study, acetylation of xylans was studied without the removal of potas...

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