Results 101 to 110 of about 3,233 (259)

The Role of Zn–Hf Site Proximity and Oxygen Vacancies for Methanol Formation Over ZnHfOx Catalysts Under CO2 Hydrogenation Conditions

Angewandte Chemie, EarlyView.
ZnHfOx catalysts enable highly selective hydrogenation of CO2 to methanol over a wide range of Zn contents, as the Zn‐VO‐Hf active motif (VO = oxygen vacancy) exists not only in solid solution‐type ZnHfOx for low Zn contents (≤ 35 mol%), but also as HfOx cluster/single atom decorated ZnO surfaces for Zn contents > 95 mol%.
Alexander Oing, Diana Piankova, Jean C. Villa‐Arpi, Muhammad Helmi Risansyauqi, Hector Prats, Felix Donat, Paula M. Abdala, Aleix Comas‐Vives, Christoph R. Müller   +8 more
wiley   +2 more sources

Direct Numerical Simulation of a Lean Premixed NH₃/H₂/N₂/Air Jet in Crossflow at Micro-Gas Turbine Relevant Conditions

Energies
In this work, Direct Numerical Simulation (DNS) investigates the combustion behaviour of a reactive transverse lean premixed jet of an ammonia blend (10% NH3, 11% H2, 16% O2 and 63% N2 by volume) injected through a rectangular nozzle in a pre-heated non ...
Donato Cecere, Matteo Cimini, Eugenio Giacomazzi   +2 more
doaj   +1 more source

Synthesis of functionalized polyolefins in a new continuous bench‐scale reactor apparatus

AIChE Journal, EarlyView.
Abstract In‐reactor functionalized polyolefins (FPOs), produced by molecular catalysts, are a new class of polymer materials with applications ranging from high performance adhesives to bitumen compatibilization. In this work, we disclose a procedure for the synthesis of FPOs in a new Continuous Bench‐scale Reactor Apparatus (COBRA).
Miloud Bouyahyi, Job Guzman, Travis Conant, Reggie Tennyson, Christoph Brose, Riccardo Conti, Peter Kolb, Andreas Müller   +7 more
wiley   +1 more source

CFD Simulation of Pre-Chamber Spark-Ignition Large Bore CNG Engine: Model Development, Practical Applications, and Experimental Validation

Energies
This study develops and validates a three-dimensional CFD model for a 12 L large-bore active-type pre-chamber spark-ignition (PCSI) engine fueled by natural gas.
Soo-Jin Jeong, Seokpan Seo, Seong-Joon Moon   +2 more
doaj   +1 more source

VALIANT: A Vision‐Authenticity Language Framework Through Integrated Experts and Aligned Numerical‐Textual Descriptors for Citri Reticulatae Pericarpium

Advanced Intelligent Systems, EarlyView.
Visual features, numerical descriptors, and controlled textual attributes extracted from smartphone images of Chenpi are integrated by VALIANT, a tailored multimodal framework for simultaneous storage‐age classification and authenticity verification. The workflow distinguishes genuine products from suspicious standard operating procedure mimics while ...
Simon C. K. Chan, Bingxin Huang, Hannah H. Kim, Wentao Yu, Yinqian Luo, Terence T. W. Wong   +5 more
wiley   +1 more source

Convective effects on head-on quenching of premixed flames in a stagnation flow

Journal of Thermal Science and Technology
Head-on quenching (HOQ) is one of the canonical configurations of flame-wall interaction (FWI), where a premixed flame propagates at a normal angle to the wall and quenches.
Hibiki SAKUMA, Takuya TOMIDOKORO, Takeshi YOKOMORI, Hong Geun IM   +3 more
doaj   +1 more source

Numerical Study of High-g Combustion Characteristics in a Channel with Backward-Facing Steps

Aerospace
High gravity (high-g) combustion can significantly increase flame propagation speed, thereby potentially shortening the axial length of aero-engines and increasing their thrust-to-weight ratio.
Zhen Gong, Hao Tang
doaj   +1 more source

Embedding Chemistry and Pharmacy Into Sustainability

Angewandte Chemie International Edition, EarlyView.
Chemistry and pharmacy provide products and processes that are indispensable for our high living standard. To understand their relationship with sustainability is important to allow them to contribute to sustainability in a sustainable manner. An integrated overview of green, circular, and sustainable chemistry and pharmacy is given and how they have t
Klaus Kümmerer
wiley   +1 more source

Heat Transfer Fluids as Co‐Diluents in Localized High‐Concentration Electrolytes for High‐Rate Lithium Metal Batteries With Enhanced Safety

Angewandte Chemie International Edition, EarlyView.
Two fluorinated ethers, commonly used as heat‐transfer fluids, are explored as co‐diluents in localized high‐concentration electrolytes (LHCEs) for lithium metal‐based batteries. The best‐performing ternary diluent blend boosts ion mobility and cuts overvoltages, thereby improving Coulombic efficiency and cycle life at ≥1 mA cm−2 in zero‐excess pouch ...
Dominik Weintz, Adil Aboobacker, Andrew Dopilka, Felix Pfeiffer, Anne Hockmann, Uta Rodehorst, Christian Wölke, Monika Schönhoff, Robert Kostecki, Diddo Diddens, Martin Winter, Isidora Cekic‐Laskovic   +11 more
wiley   +1 more source

Effects of Radiation Reabsorption on the Flammability Limit and Critical Fuel Concentration of Methane Oxy-Fuel Diffusion Flame. [PDF]

Molecules
Wang S, Wang J, Chen Y, Li Y, Chen J, Li S, Yan Z.   +6 more
europepmc   +1 more source