Results 41 to 50 of about 464,250 (225)

Methane Removal from Air: Challenges and Opportunities

Methane, 2023
Driven by increasing greenhouse gas (GHG) concentrations in the atmosphere, extreme weather events have become more frequent and their impacts on human lives have become more severe. Therefore, the need for short-term GHG mitigations is urgent. Recently,
Jin Wang, Qinghua Peter He
doaj   +1 more source

Aquatic and terrestrial cyanobacteria produce methane

Science Advances, 2020
Cyanobacteria, the most ancient and abundant photoautotrophs on Earth, produce the greenhouse gas methane during photosynthesis. Evidence is accumulating to challenge the paradigm that biogenic methanogenesis, considered a strictly anaerobic process, is ...
M. Bižić, T. Klintzsch, Danny Ionescu, M. Hindiyeh, M. Günthel, A. Muro-Pastor, Werner Eckert, Tim Urich, Frank Keppler, H. Grossart   +9 more
semanticscholar   +1 more source

Selective functionalization of methane, ethane, and higher alkanes by cerium photocatalysis

Science, 2018
Radically transforming light hydrocarbons The methane, ethane, and propane in natural gas are mostly inert under ambient conditions. Mainly they are burned to produce heat. Hu et al. show that a simple cerium salt paired with an alcohol can catalytically
Anhua Hu, Jing-Jing Guo, Hui‐Jie Pan, Zhiwei Zuo   +3 more
semanticscholar   +1 more source

Catalytic Hydrogen Production from Methane: A Review on Recent Progress and Prospect

Catalysts, 2020
Natural gas (Methane) is currently the primary source of catalytic hydrogen production, accounting for three quarters of the annual global dedicated hydrogen production (about 70 M tons).
Luning Chen, Zhiyuan Qi, Shucheng Zhang, Ji Su, G. Somorjai   +4 more
semanticscholar   +1 more source

Brittleness evaluation of main coal seams in Permian Taiyuan-Shanxi formations, Baode block, Ordos Basin: based on a convolutional neural network method

Shiyou shiyan dizhi
The coal seams of the Permian Taiyuan-Shanxi formations in the Baode block of the northeastern margin of the Ordos Basin have abundant coalbed methane resources.
Qingfeng ZHANG, Ziling LI, Jikun ZHANG, Shuai HAO, Xiaoguang SUN, Yanjie SHANG, Yun ZUO   +6 more
doaj   +1 more source

Methane Planets and their Mass-Radius Relation [PDF]

ApJ, 805, L11, 2014, 2015
Knowledge of both the mass and radius of an exoplanet allows us to estimate its mean density, and therefore its composition. Exoplanets seem to fill a very large parameter space in terms of mass and composition, and unlike the solar-system's planets, exoplanets also have intermediate masses (~ 5 - 50 M_Earth) with various densities.
arxiv   +1 more source

Theoretical and technological system for Highly efficient development of deep coalbed methane in the Eastern edge of Erdos Basin

Meitan xuebao
Aiming at the development problems of deep coal reservoirs, such as deep burial, low permeability and complex stress field, this paper clarifies that the resource enrichment conditions, effective fracturing volume, effective horizontal section length ...
Fengyin XU, Zhihong NIE, Wei SUN, Xianyue XIONG, Borui XU, Lei ZHANG, Xiaosong SHI, Ying LIU, Shirui LIU, Zengping ZHAO, Yuan WANG, Hongxing HUANG, Haikun LIN   +12 more
doaj   +1 more source

Methane clathrates in the Solar System [PDF]

Astrobiology, Volume 15, Number 4, 2015, 2015
We review the reservoirs of methane clathrates that may exist in the different bodies of the Solar System. Methane was formed in the interstellar medium prior to having been embedded in the protosolar nebula gas phase. This molecule was subsequently trapped in clathrates that formed from crystalline water ice during the cooling of the disk and ...
arxiv   +1 more source

Methane Mitigation: Methods to Reduce Emissions, on the Path to the Paris Agreement

Reviews of Geophysics, 2020
The atmospheric methane burden is increasing rapidly, contrary to pathways compatible with the goals of the 2015 United Nations Framework Convention on Climate Change Paris Agreement.
E. G. Nisbet, R. Fisher, D. Lowry, J. France, G. Allen, S. Bakkaloglu, T. Broderick, M. Cain, M. Coleman, J. Fernandez, G. Forster, P. T. Griffiths, C. P. Iverach, B. Kelly, M. Manning, P. Nisbet-Jones, J. Pyle, A. Townsend‐Small, A. al-Shalaan, N. Warwick, G. Zazzeri   +20 more
semanticscholar   +1 more source

Favorable tectonic patterns for shale gas preservation and enrichment in lower Paleozoic, southeastern Chongqing, China

Energy Exploration & Exploitation
Marine shale reservoirs have experienced intense tectonic movements in southeastern Chongqing, resulting in widely developed folds, faults and bedding slip deformation. The gas content is of a wide range while the organic matter content and thickness are
Yongchen Li, Qiang Xu, Kedi Ma, Peng Wu, Haixing Yang, Yanxiang He, Liheng Bian, Xiaoli Yao, Xuedong Sun, Sidun Zhang, Zhuang Ma   +10 more
doaj   +1 more source