Results 91 to 100 of about 7,302 (245)

ZrO2 Aerogel‐Supported Pd Nanoparticles for Photothermal CO2 Reduction

Advanced Science, EarlyView.
Nanoparticle‐based aerogels are promising catalysts for photothermal reactions due to optical transparency, high surface area, and low thermal conductivity. Here, we present deposition of Pd nanoparticles on ZrO2 aerogel granules by a wet‐impregnation approach.
David Kiwic, Linard Räz, Elena Tervoort, Markus Niederberger   +3 more
wiley   +1 more source

A shock-tube experimental and kinetic simulation study on the autoignition of methane at ultra-lean and lean conditions

Heliyon
Coalbed methane represents an important kind of natural gas resource in many countries. However, the low-concentration property of coalbed methane limits its applications. To gain insight into the combustion kinetics of coalbed methane and facilitate its
Ziwen Zhao, Yeteng Wang, Jinchao Zhang, Jinhu Liang, Yang Zhang, Fengqi Zhao, Quan-De Wang   +6 more
doaj   +1 more source

Pressure Gain Combustion for Gas Turbines: Analysis of a Fully Coupled Engine Model

Journal of Engineering for Gas Turbines and Power
Abstract The “Shockless Explosion Combustion” (SEC) concept for gas turbine combustors, introduced in 2014, approximates constant volume combustion (CVC) by harnessing acoustic confinement of auto-igniting gas packets. The resulting pressure waves simultaneously transmit combustion energy to a turbine plenum and facilitate the ...
Klein, Rupert, Nadolski, Maikel, Zenker, Christian, Oevermann, Michael, Paschereit, Christian Oliver   +4 more
openaire   +2 more sources

Optimizing Stratification in Binary Colloidal Supraparticles

Advanced Science, EarlyView.
Supraparticles from binary particle populations show stratification when dried at high Péclet numbers. In spray‐dried systems at high initial particle concentration and fast drying conditions optimal combinations of particle size ratios and volume fractions that produce maximal stratification are found both in experiment and simulation, contrasting the
Frederic Rudlof, Silas Wolf, Sonja Schaller, Jonathan Martín González, Carsten Schilde, Nicolas Vogel   +5 more
wiley   +1 more source

Offline reinforcement learning for mitigating thermoacoustic instabilities in a laminar premixed flame

Applications in Energy and Combustion Science
Thermoacoustic instabilities pose a significant challenge in combustion applications, leading to potential damage to rocket engines and gas turbines. Among various mitigation strategies, active control has been explored as a mean to decouple acoustics ...
Juan Camilo Giraldo Delgado, Qi Wang, S. Mani Sarathy   +2 more
doaj   +1 more source

Non‐Noble Metal Nanocatalysts for Hydrogen Evolution

Advanced Science, EarlyView.
Recent overviews and latest developments of diverse classes of non‐noble catalysts for application toward high‐performance photocatalysis, thermocatalytic steam reforming, and electrocatalysis. Toward sustainability objectives, several advanced characterization tools in combination with the latest breakthroughs in machine learning for material ...
Lina Jaya Diguna, Gede Herry Arum Wijaya, Md Abdul Kuddus Sheikh, Tobias Haposan, Fidelis Stefanus Hubertson Simanjuntak, Arramel Arramel, Muhammad Danang Birowosuto, Konstantin Sergeevich Novoselov   +7 more
wiley   +1 more source

Interfacial Growth of 420 nm Ultrathin and Dense MOFs for Composite Electrolyte to Reduce Li+ Conduction Resistance and Inhibit Lithium Dendrite

Advanced Science, EarlyView.
In this work, an interfacial growth method using PVDF‐HFP enables controlled permeation of 2‐methylimidazole to react with Co2+, forming an ultrathin (420 nm) ZIF‐67 layer by precisely tuning the reaction time. This dense layer promotes lithium salt dissociation and suppresses dendrite growth, while its ultrathin nature reduces Li+ transport resistance,
Xinhong Qi, Zhaokai Rui, Shichen Zhang, Yihang Li, Ziyi Xin, Mengjuan Li, Lu Gao, Yuchen He, Xiaobin Jiang, Xiangcun Li, Gaohong He   +10 more
wiley   +1 more source

Pressure Gain Combustion: Fuel Spray and Shockwave Interaction

Pressure gain combustion can attain higher thermodynamic cycle efficiency in gas turbine power systems, resulting in the reduction of specific fuel consumption/fuel burn and Carbon dioxide emissions.There are many ways to achieve pressure gain and the present research investigates pressure gain through shock bubble (gas and liquid bubble) interaction ...
openaire   +2 more sources

Oxygen‐Assisted MOCVD Growth of Monolayer PtSe2 Films With Bandgap Opening for Semiconducting FET Channels

Advanced Science, EarlyView.
Monolayer PtSe2 films are successfully grown via optimized MOCVD, achieving uniform coverage over a 1.5 cm × 1.5 cm area. Oxygen‐assisted growth effectively removes carbon impurities, ensuring high film quality. Array‐level FETs based on monolayer PtSe2 channels demonstrate low off‐current and high ION/IOFF ratios, highlighting the potential of PtSe2 ...
Yuseok Kim, Hee‐Soo So, Minseok Yoo, Saeyoung Oh, Dongyoung Kim, Minseung Gyeon, Min‐Kyung Jo, Gichang Noh, Tae Soo Kim, Min‐gyu Kim, Jeongwon Park, Hyun‐Jun Chai, Minsoo Kang, Suhyun Kim, Ayoung Ham, Jaehyun Lee, Jongsun Lim, Seungwoo Song, Joon Young Kwak, Seunghwan Seo, Chang‐Soo Lee, Chang Gyoun Kim, Kibum Kang   +22 more
wiley   +1 more source

Introduction: Special Section on Pressure Gain Combustion [PDF]

Journal of Propulsion and Power, 2017
openaire   +1 more source