Results 81 to 90 of about 3,559 (212)

Challenges and enablers in fluidization technology

AIChE Journal, EarlyView.
Abstract Gas–solid fluidized beds provide excellent heat and mass transfer for high‐throughput operations from coating to catalytic conversion and underpin emerging low‐carbon technologies. Yet industrial reliability, scale‐up, and control lag scientific understanding, particularly as finer, stickier, and more variable feedstocks increasingly challenge
J. Ruud van Ommen, Jia Wei Chew
wiley   +1 more source

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

CFD modeling and sensitivity‐guided design of silicon filament CVD reactors

AIChE Journal, EarlyView.
Abstract Filament‐based chemical vapor deposition (CVD) for silicon (Si) coatings is often treated as an adaptation of planar deposition. But this overlooks fundamental shifts in transport phenomena and reaction kinetics. In filament CVD, the filament acts as a substrate, heat source, and flow disruptor simultaneously. In this work, we ask: What really
G. P. Gakis, G. Loachamín‐Suntaxi, I. G. Aviziotis, E. D. Koronaki, P. P. Filippatos, G. Chatzigiannakis, S. P. A. Bordas, D. Davazoglou, A. G. Boudouvis   +8 more
wiley   +1 more source

Erosion–corrosion behaviors of P91 steel in high-velocity flowing lead–bismuth eutectic

工程科学学报
Lead–bismuth eutectic (Pb–Bi) alloy, a liquid heavy metal, has garnered substantial attention as a candidate coolant for next-generation lead-cooled fast reactors (Gen-IV LFRs) and accelerator-driven systems (ADSs) owing to its exceptional nuclear and ...
Jisheng LI, Yanfei WANG, Xianzong WANG
doaj   +1 more source

Asking the 5 W's for designing next‐generation bioprocessing

AIChE Journal, EarlyView.
Abstract Biotechnology is expanding beyond traditional, centralized fermentation and toward next‐generation bioprocessing paradigms that emphasize flexible deployment outside the laboratory with application‐specific performance. However, many bioprocesses fail to translate beyond proof‐of‐concept into industrially viable systems because early design ...
Sangdo Yook, Karoline Maria Vieira Nogueira, Raj Sukumar, Jenna Miller, Hal S. Alper   +4 more
wiley   +1 more source

Automated generative process synthesis via transformer‐based dual‐loop simulation and optimization

AIChE Journal, EarlyView.
Abstract This study presents a novel framework for automated generative process synthesis, addressing the complexity of simultaneously optimizing discrete topologies and continuous operating variables. To overcome conventional superstructure limitations, we propose a dual‐loop architecture integrating generative transformers with rigorous process ...
Yeong Woo Son, Chan Kim, Ji Hun Pak, Hain Lee, Jong Min Lee   +4 more
wiley   +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

Development of Fuel Performance Analysis Code for Liquid Metal Cooled Fast Reactor Based on MOOSE Platform

Yuanzineng kexue jishu
The liquid metal cooled fast reactor has significant strategic significance for the innovative development of nuclear energy, and the development of fuel performance analysis programs suitable for liquid metal cooled fast reactors is of great ...
SHAO Shihao, LIU Zhouyu, XU Xiaobei, ZONG Yufan, CAO Liangzhi, WU Hongchun
doaj   +1 more source

Structured sorbents for Direct Air Capture: The impact of materials and chemicals on performance

AIChE Journal, EarlyView.
Abstract Structured sorbents can efficiently process large air volumes required for Direct Air Capture (DAC), but their broad implementation is limited by challenges in producing reproducible and homogeneous materials. This work presents a robust procedure to graft amines onto monolithic sorbents and systematically investigates how CO2$$ {\mathrm{CO ...
Nicole Ferru, Moritz Bischof, Martina Saporito, David Büchner, Quirin Grossmann, Vincent Dufour‐Décieux, Ronny Pini, André Bardow, Marco Mazzotti   +8 more
wiley   +1 more source

Development of Reactor Physics Calculation Code and Critical Experimental Validation for Small Sized Lead-cooled Fast Reactor

Yuanzineng kexue jishu
Lead-cooled fast reactor (LFR) is one of six advanced nuclear energy systems recommended by Gen-4 International Forum. With the significant development in materials and equipment, LFR is more and more closed to engineering applications. Right now, plenty
CHEN Renzong1, ZHOU Qi2, ZHU Qingfu2, XIA Zhaodong2, NING Tong2, MA Xiaodi2, SUN Xu2
doaj   +1 more source