A5031533073- Catalytic Processes in Materials Science
- Catalysts for Methane Reforming
- Industrial Gas Emission Control
- Catalysis and Hydrodesulfurization Studies
- Catalysis and Oxidation Reactions
- Mesoporous Materials and Catalysis
- Gas Sensing Nanomaterials and Sensors
- Covalent Organic Framework Applications
- Carbon Dioxide Capture Technologies
- Zeolite Catalysis and Synthesis
- Chemical Looping and Thermochemical Processes
- Environmental Policies and Emissions
- Adsorption and Cooling Systems
- Graphene and Nanomaterials Applications
- Layered Double Hydroxides Synthesis and Applications
- Thermal and Kinetic Analysis
- Sulfur Compounds in Biology
- Metal-Organic Frameworks: Synthesis and Applications
- Graphene research and applications
- Catalysis for Biomass Conversion
- Supercapacitor Materials and Fabrication
Gazi University
2015-2025
Maltepe University
2001-2024
Gazi Hastanesi
2017-2022
Middle East Technical University
2010
Cerium incorporated iron oxide catalysts and a pure catalytic material were prepared by the complexation technique their performances investigated for selective oxidation of H2S to elemental sulfur in fixed-bed flow reactor. Ce−Fe mixed catalyst having Fe/Ce ratio 1/1 (2Fe−2Ce) showed complete conversion very high selectivity temperature range 200−300 °C. Sulfur stability was significantly enhanced incorporation cerium into structure. It concluded that ceria structure improved redox ability catalyst.
Considering the importance of high-temperature removal H2S from industrial gases, sorption studies were carried out on copper oxide and Cu−V Cu−Mo mixed oxides in absence presence hydrogen a fixed-bed reactor. Experiments wide temperature range between 300 700 °C. A significant amount SO2 was produced with CuO sorbent hydrogen. In case sorbents, formation detected even On basis experimental concentration profiles H2S, SO2, H2O measured reactor effluent XRD results for solid products,...
Dry re-forming of methane with CO2 was investigated over bimetallic W and Ni incorporated mesoporous alumina catalysts prepared by the one-pot sol–gel route. Powdered materials were thoroughly characterized (N2 physisorption, XRD, XPS, SEM-EDX, TGA-DTA, TPH) prior to after catalytic runs performed at 600 750 °C. High surface area W–Ni (SBET = 178–192 m2/g) synthesized in this work showed excellent performance for conversion model biogas synthesis gas. The Ni–W containing exhibited high...
In the present study, novel copper-incorporated MCM-41-type high-surface-area mesoporous materials were synthesized following a direct hydrothermal synthesis method and also by impregnation of copper into mesopores pre-synthesized MCM-41 structure. XRD results indicated formation CuO phase within Sharp H2S breakthrough curves, quite high sorption rate parameters, sulfur retention capacities obtained in high-temperature removal using these materials. patterns sulfided products Cu1.81S A...
Abstract This study aimed to prepare reduced graphene oxide (RGO) with high electrical conductivity by changing the reduction sequences environmentally friendly L-ascorbic acid and H 2 at moderate temperature. Graphene (GO) was prepared modified Hummers method using graphite. The characteristic peak about θ :10° observed in XRD pattern, oxygen-containing functional groups determined FTIR analyses indicate successful preparation of In order investigate removal from GO restoration structure,...
Porous Mn−Cu and Mn−Cu−V mixed-oxide sorbents prepared by the complexation technique were tested for high-temperature removal of H2S in presence hydrogen gas. Sorption experiments carried out at 627 °C a fixed-bed reactor showed higher reactivity also sulfur retention capacity (over 0.15 g S/g sorbent) mixed oxide than oxide. Successive sulfidation−regeneration cycles demonstrated that was more stable Mn−Cu−V, maintaining its activity about 90% end five cycles. Although formation some MnSO4...
Vanadia- and/or ceria-incorporated SBA-15-like materials were prepared by impregnation and one-pot hydrothermal synthesis procedures at different solution pH values. The of the was found to have a very strong effect on pore structure, chemical composition, morphology synthesized materials. Materials V Ce route ≪ 1.0 showed characteristic ordered structure SBA-15. However, 1.5 gave complex structures with bottleneck-shaped slit-like interconnected pores. Activity tests in selective oxidation...
Abstract Ni-incorporated Mg–Al type hydrotalcite-like catalytic materials were synthesized following impregnation and co-precipitation routes, their performances compared in the dry-reforming reaction of methane. The effects Ru on performance also investigated. Results showed that catalyst (NiMgAlO), which was prepared by route, highly stable during tests performed at 600 °C, extending up to 24 h. fractional conversion CO 2 (0.42) higher than CH 4 (0.29) due contribution reverse water gas...