Results 91 to 100 of about 164,259 (298)

Soil methane sink capacity response to a long-term wildfire chronosequence in Northern Sweden [PDF]

, 2015
Boreal forests occupy nearly one fifth of the terrestrial land surface and are recognised as globally important regulators of carbon (C) cycling and greenhouse gas emissions.
A Liptay, A Priemé, AJ Soja, Andy Stott, APS Adamsen, ASK Chan, C Knief, CJA Bradshaw, DA Wardle, DA Wardle, DA Wardle, DA Wardle, David A. Wardle, DS Reay, E Chuvieco, EA Holland, ES Kasischke, ES Kasischke, G Girardin, J. Colin Murrell, K Jaatinen, KA Smith, M Ohlson, MA Gathany, Md. Tanvir Rahman, N Pluchon, Niall P. McNamara, Nick J. Ostle, NP McNamara, PJ Maxfield, PSA Beck, R. Michael Lehman, RA Burke, Richard D. Bardgett, Ruth Gregg, S Sjögersten, SC Tyler, Simon Oakley, T Nakano, WS Reeburgh, Y-H Zhang, YA Teh, YA Trotsenko   +42 more
core   +3 more sources

Methane Activation by Selective Oxidation [PDF]

Topics in Catalysis, 2016
The selective activation of methane by oxidation is a topic that has fascinated scientists and engineers for over a century. In this paper some of the recent approaches will be described and discussed. In particular, the use of FeZSM5 as a catalyst for methane oxidation with aqueous hydrogen peroxide will be described.
openaire   +1 more source

Pulsed Electrolysis Prevents Sulfur Poisoning for Sustained Sulfide Valorization

Advanced Materials, EarlyView.
Integrating pulsed electrolysis with Sc‐doped NiFe‐LDH enables sustainable sulfide valorization, achieving >500 h stability, 99.8% efficiency. Moreover, this technology produces high‐purity sulfur and sodium formate, boosting profit by 121% to $1,294.7 per tonne of hydrogen.
Zhiyan Hou, Yangbo Ma, Yufeng Wu, Weijin Cao, Zhengxiao Guo, Changlong Wang   +5 more
wiley   +1 more source

Photocatalytic Water Splitting on the Lunar Surface: Prospects for In Situ Resource Utilization

Advanced Materials Interfaces, EarlyView.
Water has been found in craters on the moon nearby locations which are illuminated >80% of the time. Photocatalysis uses energy from sunlight to drive chemical reactions such as water splitting to produce oxygen and hydrogen. It is a scalable technology that requires lighter equipment and utilizes resources available on the moon. ABSTRACT The discovery
Ranjani Kalyan, Thomas D. Small, Gregory F. Metha, Mahmoud Adel Hamza, Thomas J. O'Dea, Yideng Shen, Cameron J. Shearer   +6 more
wiley   +1 more source

Exploring the Potential of Zero‐Dimensional Carbon Nanomaterials in Photoluminescent, Electrochemiluminescent and Electrochemical Sensors

Advanced Materials Interfaces, EarlyView.
Zero‐dimensional carbon nanomaterials are presented as multifunctional platforms linking structure, property, and sensing performance. Surface engineering and heteroatom doping modulate electron‐transfer and luminescent behavior, enabling electrochemical, photoluminescent, and electrochemiluminescent detection. Fundamental design principles, analytical
Gustavo Martins, Jeferson Luiz Gogola, Ava Gevaerd, Cristiane Kalinke, Paulo Roberto de Oliveira, Fabio Roberto Caetano, Bruno Campos Janegitz, Márcio Fernando Bergamini, Luiz Humberto Marcolino‐Junior   +8 more
wiley   +1 more source

Recent Progress in Direct Conversion of Methane to Methanol Over Copper-Exchanged Zeolites

Frontiers in Chemistry, 2019
The conversion of methane into an easily transportable liquid fuel or chemicals has become a highly sought-after goal spurred by the increasing availability of cheap and abundant natural gas.
Min Bum Park, Eun Duck Park, Wha-Seung Ahn   +2 more
doaj   +1 more source

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

Methane Catalytic Combustion on Pd9/?-Al2O3 with Different Degrees of Pd Oxidation

CHIMIA, 2013
: This research is focused on the analysis of adsorbed CH4 intermediates at oxidized Pd9 nanoparticles supported on ? -alumina. From first-principle density functional theory (DFT) calculations, several configurations, charge transfer and ...
Izabela Czekaj, Katarzyna A. Kacprzak, John Mantzaras   +2 more
doaj   +1 more source

A Perspective on the Applications of Triphasic Gas Storage in Electrochemical Systems

Advanced Science, EarlyView.
Gas storage in microporous materials positioned locally at an electrode or electrocatalyst surface enhances electrochemical processes. Abstract Microporous materials store gases under dry conditions (e.g., hydrogen or oxygen via physisorption), but in some cases microporous materials also show triphasic (e.g., in a solid|gas|liquid system) gas storage ...
Zhongkai Li, Corin T. Scott, Taku Suzuki‐Osborne, John P. Lowe, Dominic Taylor, Mariolino Carta, Neil B. McKeown, Andrew D. Burrows, Lucia H. Mascaro, Frank Marken   +9 more
wiley   +1 more source

Numerical Study of Moisture Transfer and Methane Emission in Earthen Final Covers: Effects of Ambient Conditions

Atmosphere
Earthen final covers (EFCs) are widely used to mitigate environmental impacts from landfills, particularly in controlling methane emissions and groundwater contamination.
Tao Wu, Song Feng, Cheng Chen, Guannian Chen, Zhangjing Zhang   +4 more
doaj   +1 more source