Results 1 to 10 of about 758,902 (306)

Al ion-exchanged USY in FCC catalyst for high LPG yield

Catalysis Communications, 2021
Refineries, especially fluid catalytic cracking (FCC) units are required to increase propylene production because of changing demand from fuels to chemicals in recent years. We have found a promising FCC catalyst for such demand. The FCC catalyst with Al
Hiroshi Yamazaki, Hiroki Hasegawa, Chisuzu Tanaka, Yusuke Takamiya, Tomohiro Mitsui, Takaki Mizuno   +5 more
doaj   +1 more source

Selected Techniques for Cutting SO_x Emissions in Maritime Industry

Technologies, 2022
Burning fuels with high sulfur content leads to SOx emissions, especially SO2, which leads to various environmental and health problems. The maritime sector is responsible for 13% of the global anthropogenic emissions of SO2.
Christos Papadopoulos, Marios Kourtelesis, Anastasia Maria Moschovi, Konstantinos Miltiadis Sakkas, Iakovos Yakoumis   +4 more
doaj   +1 more source

High-Degree Oxidative Desulfurization of a Commercial Marine Fuel Using Deep Eutectic Solvents and Their Recycling Process

Separations, 2023
Escalating environmental concerns have dictated the need to develop innovative methods for efficiently desulfurizing marine fuels (heavy fuel oils). In this work, the oxidative desulfurization method using deep eutectic solvents (DESs) was applied to ...
Olga Thoda, Efstratios Svinterikos, Konstantinos Miltiadis Sakkas, Anastasia Maria Moschovi, Iakovos Yakoumis   +4 more
doaj   +1 more source

DES-Based Solution for Regenerating Diesel Particulate Filters of Euro V/VI Diesel Vehicles †

Materials Proceedings, 2022
A diesel particulate filter (DPF) can remove the diesel particulate matter from the incomplete combustion exhaust gases of diesel engine vehicles. The regeneration process of DPF is critical since the cost of the DPF/catalytic system for Euro 5/6 Diesel ...
Hara Papadopoulou, Sotiria Papagianni, Anastasia Maria Moschovi, Konstantinos Miltiadis Sakkas, Iakovos Yakoumis   +4 more
doaj   +1 more source

Highly Active under VIS Light M/TiO₂ Photocatalysts Prepared by Single-Step Synthesis

Applied Sciences, 2023
A single-step impregnation approach is investigated as a synthetic route for photocatalyst synthesis active under visible light. The as-derived photocatalysts exhibited very high degradation rates towards methylene blue (MB) decolorization under visible ...
Olga Thoda, Anastasia M. Moschovi, Konstantinos Miltiadis Sakkas, Ekaterini Polyzou, Iakovos Yakoumis   +4 more
doaj   +1 more source

Platinum Recovered from Automotive Heavy-Duty Diesel Engine Exhaust Systems in Hydrometallurgical Operation

Metals, 2021
The current study is focused on platinum recovery from the secondary sources of end-of-life heavy-duty diesel oxidation catalysts (DOCs) and heavy-duty catalyzed diesel particulate filters (c-DPFs) in order to reduce the supply–demand gap within the ...
Sotiria Papagianni, Anastasia-Maria Moschovi, Ekaterini Polyzou, Iakovos Yakoumis   +3 more
doaj   +1 more source

Relation between half‐cell and fuel cell activity and stability of FeNC catalysts for the oxygen reduction reaction

SusMat, 2022
FeNC catalysts are promising substitutes of platinum‐type catalysts for the oxygen reduction reaction (ORR). While previous research disclosed that high pyrolysis temperatures are required to achieve good stability, it was identified that a trade‐off ...
Janik Scharf, Markus Kübler, Vladislav Gridin, William David Zacharias Wallace, Lingmei Ni, Stephen Daniel Paul, Ulrike Ingrid Kramm   +6 more
doaj   +1 more source

Green Synthesis of Nanostructure CeO2 Using Tea Extract: Characterization and Adsorption of Dye from Aqueous Phase

Bioinorganic Chemistry and Applications, 2021
Nanostructure CeO2 powders were synthesized using tea waste extract as gel precursor. The as-prepared samples were characterized by thermogravimetric analyzer (TGA), X-ray diffraction (XRD), scanning electron microscopy (SEM), X-ray photoelectron ...
Chengshun Liu, Xiyao Liu, Yilin Wu, Zhuotong Chen, Zhuanrong Wu, Shumao Wang, Hua Han, Zhenbang Xie, Yixuan Wang, Tzu-Hsing Ko   +9 more
doaj   +1 more source

Nickel-Containing Ceria-Zirconia Doped with Ti and Nb. Effect of Support Composition and Preparation Method on Catalytic Activity in Methane Dry Reforming

Nanomaterials, 2020
Nickel-containing mixed ceria-zirconia oxides also doped by Nb and Ti have been prepared by a citrate route and by original solvothermal continuous flow synthesis in supercritical alcohols.
Mikhail Simonov, Yulia Bespalko, Ekaterina Smal, Konstantin Valeev, Valeria Fedorova, Tamara Krieger, Vladislav Sadykov   +6 more
doaj   +1 more source

Silver-assisted reduction of nitroarenes by an Ag-embedded curcumin/melamine-functionalized magnetic nanocatalyst

Scientific Reports, 2023
In the current study, we introduce a hybrid magnetic nanocomposite comprised of curcumin (Cur), iron oxide magnetic nanoparticles (Fe3O4 MNPs), melamine linker (Mel), and silver nanoparticles (Ag NPs).
Nima Khaleghi, Mohadeseh Forouzandeh-Malati, Fatemeh Ganjali, Zahra Rashvandi, Simindokht Zarei-Shokat, Reza Taheri-Ledari, Ali Maleki   +6 more
doaj   +1 more source