Results 41 to 50 of about 332,342 (268)

Hydrogen SI and HCCI Combustion in a Direct-Injection Optical Engine [PDF]

, 2009
Hydrogen has been largely proposed as a possible alternative fuel for internal combustion engines. Its wide flammability range allows higher engine efficiency with leaner operation than conventional fuels, for both reduced toxic emissions and no CO2 ...
Aleiferis, PG, Rosati, MF
core   +1 more source

Rational Fine‐Tuning of MOF Pore Metrics: Enhanced SO2 Capture and Sensing with Optimal Multi‐Site Interactions

Advanced Functional Materials, EarlyView.
A pore tuning strategy to amplify the multi‐site MOF‐SO2 interactions is proposed to achieve an enhanced trace SO2 capture and chemiresistive sensing in highly stable isostructural DMOFs by annelating benzene rings. This work provides a facile strategy to achieve tailor‐made stable MOF materials for specific multifunctional applications.
Shanghua Xing, Abdulrahman Mohabbat, István Boldog, Jens Möllmer, Marcus Lange, Yulyan Haiduk, Tobias Heinen, Vladimir Pankov, Oliver Weingart, Christoph Janiak   +9 more
wiley   +1 more source

Effect of Bluff Body Attributes on Afterburner Combustion Characteristics of a Boron Solid Rocket Scramjet

International Journal of Aerospace Engineering
In order to improve the combustion efficiency of boron-containing primary gas in the secondary combustion chamber of a solid rocket scramjet and improve engine performance, the effects of different types of blunt bodies, number of rear blunt bodies, and ...
Jiang Ling, Chaoqi Xu, Yihua Xu, Haijun Sun   +3 more
doaj   +1 more source

Combustion performance of hydrogen fueled parallel wall-jet used for drag reduction in a supersonic combustor

Case Studies in Thermal Engineering
Hydrogen fueled parallel wall-jet combustion is considered to be one of the most promising drag reduction technologies in supersonic combustors, researchers mainly focus on its drag reduction mechanism, while balancing its combustion efficiency and drag ...
Jingying Zuo, Jingjia Xue, Silong Zhang, Jianfei Wei, Xin Li, Naigang Cui, Wen Bao   +6 more
doaj   +1 more source

A Study of the Bituminous Coal Oxidation Factor in Large Scale Boilers for Estimating GHG Emissions

Asian Journal of Atmospheric Environment, 2011
Korea-specific GHG emissions should be estimated correctly in order to ensure effective measurement of climate change variables. The use of country-specific data that reflects fuel and technology characteristics is needed for accurate GHG emissions ...
Seehyung Lee , Jinsu Kim , Jeongwoo Lee , Seung-hee Lee, Seongho Lee , Euichan Jeon   +5 more
doaj   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Pore Size Effects of Mesoporous N‐Doped Carbon Nanospheres as Advanced Support Material on the Activity of Molybdenum Sulfide Catalysts for the Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
By tuning the pore size of mesoporous N‐doped carbon (MPNC) nanospheres as support material for molybdenum sulfide, the electrochemical activity of the composite material for the hydrogen evolution reaction can be optimized. An ideal MPNC pore size of 60 nm allows a high number of molybdenum sulfide active sites while maintaining efficient proton and ...
Niklas Ortlieb, Christian Völker, Lars Guggolz, Anna Fischer   +3 more
wiley   +1 more source

Numerical Study on the Combustion and Emissions Characteristics of Liquid Ammonia Spray Ignited by Dimethyl Ether Spray

Fire
Ammonia has attracted considerable attention as a zero-carbon fuel for decarbonizing energy-intensive industries. However, its low reactivity and narrow flammability limit efficient ignition and efficient combustion.
Yupeng Leng, Liming Dai, Qian Wang, Jiayu Lu, Ouqing Yu, Nigel John Simms   +5 more
doaj   +1 more source

The Deposit Formation Mechanism in Coal-Fired Rotary Kiln for Iron Ore Pellet Production: A Review

Crystals, 2021
The deposit-forming problem is one of the main bottlenecks restricting the yield and production benefit of iron ore pellets produced by coal-fired rotary kilns.
Shuai Wang, Yufeng Guo, Kuo Liu, Zhuang Yang, Yajing Liu, Ying Jiang, Feng Chen, Fuqiang Zheng, Lingzhi Yang   +8 more
doaj   +1 more source

Role of Histidine‐Containing Peptoids in Accelerating the Kinetics of Calcite Growth

Advanced Functional Materials, EarlyView.
Amphiphilic histidine‐containing peptoids mimic carbonic anhydrase (CA) to accelerate calcite step growth. In the presence of Zn2+, they promote the deprotonation of HCO3−, the desolvation of Ca2+, and the reorganization of interfacial hydration layers, thereby reducing the activation barrier for calcite growth.
Mingyi Zhang, Ying Chen, Chenyang Shi, Progyateg Chakma, James J. De Yoreo, Chun‐Long Chen   +5 more
wiley   +1 more source