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Journal articles on the topic 'Methane'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

Tselishchev, Oleksii, Ayodeji Ijagbuji, Maryna Loriia, and Vanadii Nosach. "Synthesis of Methanol from Methane in Cavitation Field." Chemistry & Chemical Technology 12, no. 1 (2018): 69–73. http://dx.doi.org/10.23939/chcht12.01.069.

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2

Xu, Qingliang. "Reviews on the Production and Application of Methane." Applied and Computational Engineering 3, no. 1 (2023): 96–100. http://dx.doi.org/10.54254/2755-2721/3/20230358.

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This paper discusses the properties, production and application of methane. It first explains how methanes tetrahedral structure and the slightly polar C-H bond give rise to its physical properties of low melting and boiling point and its chemical properties of oxidation and substitution reaction. It then looks into the three most significant natural and artificial methods to produce methane, including biological decomposition, geological methane generation and methanation. It further identifies methane as a source of clean energy. Compared to traditional fossil fuels such as coal, Methane is

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3

Lind, Natalie M., Natalie S. Joe, Brian S. Newell, and Aimee M. Morris. "High Yielding, One-Pot Synthesis of Bis(1H-indazol-1-yl)methane Catalyzed by 3d-Metal Salts." Reactions 3, no. 1 (2022): 59–69. http://dx.doi.org/10.3390/reactions3010005.

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Synthetic access to poly(indazolyl)methanes has limited their study despite their structural similarity to the highly investigated chelating poly(pyrazolyl)methanes and their potentially important indazole moiety. Herein is presented a high yielding, one-pot synthesis for the 3d-metal catalyzed formation of bis(1H-indazol-1-yl)methane from 1H-indazole utilizing dimethylsulfoxide as the methylene source. Complete characterization of bis(1H-indazol-1-yl)methane is given with 1H and 13C NMR, UV/Vis, FTIR, high resolution mass spectrometry and for the first time, single crystal X-ray diffraction.

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4

Tang, Ping, Xiong Yang, and Ying Shu Liu. "Active Carbon for Coal Mine Methane Separation by Pressure Swing Adsorption." Advanced Materials Research 236-238 (May 2011): 586–90. http://dx.doi.org/10.4028/www.scientific.net/amr.236-238.586.

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Five types of active carbon’s adsorption isotherm of nitrogen at 77K were measured, and their adsorption characteristic were analysed. The results show AC1, AC2 and AC3 have a lot of micropores for they have high nitrogen adsorbance in low pressure at 77K. The HK model was employed to analysis the pore size distribution of the adsorbance. AC1 has most developed microspore structure, its surface area reached 1706㎡/g, and its pore size mainly concentrated at 4.6 angstroms. Then the five adsorbents’ adsorption isotherm on methane, oxygen and nitrogen at 298K, 308K and 318K were measured. Methane’

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5

Muhammad Ahsan and Edgar Luna. "Resource classification of coal bed methane and its contribution in energy transition and decarbonization path of oil and gas industry (A synopsis of CBM Life Cycle Analysis)." World Journal of Advanced Engineering Technology and Sciences 12, no. 1 (2024): 001–7. http://dx.doi.org/10.30574/wjaets.2024.12.1.0156.

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World economies are becoming increasingly more dependent on energy and countries have a voracious appetite for energy therefore, the need for an abundant clean energy is becoming a necessity. Energy companies are challenging environmental costs of coal bed methane as with advancement of new technology the impact from production of coal bed methane can reduce and to a certain extent avoided or offset. Production of coal bed methane results in changes to the land, to surface water and to ground water systems. Carbon quantification is required to understand, monitor and manage these changes. Prev

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6

Stevenson, David S., Richard G. Derwent, Oliver Wild, and William J. Collins. "COVID-19 lockdown emission reductions have the potential to explain over half of the coincident increase in global atmospheric methane." Atmospheric Chemistry and Physics 22, no. 21 (2022): 14243–52. http://dx.doi.org/10.5194/acp-22-14243-2022.

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Abstract. Compared with 2019, measurements of the global growth rate of background (marine air) atmospheric methane rose by 5.3 ppb yr−1 in 2020, reaching 15.0 ppb yr−1. Global atmospheric chemistry models have previously shown that reductions in nitrogen oxide (NOx) emissions reduce levels of the hydroxyl radical (OH) and lengthen the methane lifetime. Acting in the opposite sense, reductions in carbon monoxide (CO) and non-methane volatile organic compound (NMVOC) emissions increase OH and shorten methane's lifetime. Using estimates of NOx, CO, and NMVOC emission reductions associated with C

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7

Li, Jin Shan, Zhong Xue Li, and Bing Hui Zu. "Coalbed Methane (CBM) Project Enrichment Area and Economic Evaluation." Advanced Materials Research 772 (September 2013): 776–80. http://dx.doi.org/10.4028/www.scientific.net/amr.772.776.

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Coalbed gas, also called coalbed methane gas, is a kind of unconventional natural gas located in coal and rocks, coexisting with coal and its main ingredient are methane. On different levels of structure, coal bed methanes adsorption has partition zonality. The gas-bearing of coal seams has relative concentration in different tectonic units, is known as coalbed methane (CBM) enrichment. Influenced by coal rank, coal, rock properties and various geological conditions and other factors, the enrichment has certain regularity. In the study of the coal bed gas enrichment, coal bed gas enrichment es

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8

Abulude, Francis Olawale, Akinyinka Akinnusotu, Samuel Dare Oluwagbayide, Julius Oyetunde, and Abigail Oluwakemi Feyisetan. "Methane emissions and air quality: A growing concern." Pollution Study 6, no. 2 (2025): 3311. https://doi.org/10.54517/ps3311.

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<p>Methane, a potent greenhouse gas, has gained prominence due to its significant contribution to global climate change. Beyond its climate impact, this review recognizes methane’s dual role in influencing local and regional air quality, underscoring its growing concern in the context of contemporary environmental issues. The paper aims to provide an overview of methane sources, geographic distribution, long-term health effects, interactions with other pollutants, and the pivotal role of integrated monitoring systems in effective pollution control strategies. The review delves into the p

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9

Akinsemolu, Adenike A., and Helen N. Onyeaka. "Can Methylococcus capsulatus Revolutionize Methane Capture and Utilization for Sustainable Energy Production?" SynBio 2, no. 3 (2024): 311–28. http://dx.doi.org/10.3390/synbio2030019.

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Methane is the second largest contributor to global warming after carbon dioxide. Once it is released into the atmosphere, methane lingers for over 10 years, during which it traps heat, contributes to the formation of ground-level ozone, and affects air quality adversely. Conversely, methane has some benefits that could be harnessed to address its impact on the environment while utilizing it for good. Methane’s significant role in global warming and potential for energy production and other beneficial applications necessitate the adoption of innovative solutions to remediate the gas from the a

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10

Ghassemi Nejad, Jalil, Mun-Su Ju, Jang-Hoon Jo, et al. "Advances in Methane Emission Estimation in Livestock: A Review of Data Collection Methods, Model Development and the Role of AI Technologies." Animals 14, no. 3 (2024): 435. http://dx.doi.org/10.3390/ani14030435.

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This review examines the significant role of methane emissions in the livestock industry, with a focus on cattle and their substantial impact on climate change. It highlights the importance of accurate measurement and management techniques for methane, a potent greenhouse gas accounting for 14–16% of global emissions. The study evaluates both conventional and AI-driven methods for detecting methane emissions from livestock, particularly emphasizing cattle contributions, and the need for region-specific formulas. Sections cover livestock methane emissions, the potential of AI technology, data c

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11

Pekarnikova, M. Е., and K. B. Valiullina. "Legal Regulation of Methane Emissions and Its Role in Supporting the Goal of the Paris Agreement: General Issues." Uchenye Zapiski Kazanskogo Universiteta Seriya Gumanitarnye Nauki 166, no. 6 (2025): 145–59. https://doi.org/10.26907/2541-7738.2024.6.145-159.

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This article explores the current legal and regulatory practices on lowering atmospheric methane, the main short-lived gaseous pollutant, adopted by the world’s largest methane emitters. In 2021, many countries joined the Global Methane Pledge (GMP), a joint international initiative, which has since been the guiding framework for estimating and reducing global methane levels. The GMP’s primary task is to support the goal of the Paris Agreement on climate change. Due to methane’s short life and the phenomenon referred to as the methane paradox, it has become clear that abandoning hydrocarbons c

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12

Zheng, Qing Rong, Fan Gui Zeng, and Shi Tong Zhang. "Characteristics and Mechanisms of Gaseous Organic Compound Generation during Coking." Applied Mechanics and Materials 71-78 (July 2011): 4710–16. http://dx.doi.org/10.4028/www.scientific.net/amm.71-78.4710.

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Five representative coal samples used for coking were carbonized in a thermogravimetric analyzer to simulate an industrial coking process. The gaseous organic compounds generated were analyzed with a coupled mass spectrometer. During coal carbonization, thermal detachment of aliphatic side groups causes disintegration of the coal structure. Methyl groups detach at higher temperatures than methylene and methine groups, and the temperatures corresponding to peak generation of these groups increase with the metamorphic grade of the coal. Methane is generated by three mechanisms: below 370 °C, met

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13

Allen, Robert J., Xueying Zhao, Cynthia A. Randles, Ryan J. Kramer, Bjørn H. Samset, and Christopher J. Smith. "Present-day methane shortwave absorption mutes surface warming relative to preindustrial conditions." Atmospheric Chemistry and Physics 24, no. 19 (2024): 11207–26. http://dx.doi.org/10.5194/acp-24-11207-2024.

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Abstract. Recent analyses show the importance of methane shortwave absorption, which many climate models lack. In particular, Allen et al. (2023) used idealized climate model simulations to show that methane shortwave absorption mutes up to 30 % of the surface warming and 60 % of the precipitation increase associated with its longwave radiative effects. Here, we explicitly quantify the radiative and climate impacts due to shortwave absorption of the present-day methane perturbation. Our results corroborate the hypothesis that present-day methane shortwave absorption mutes the warming effects o

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14

Vigderovich, Hanni, Lewen Liang, Barak Herut, et al. "Evidence for microbial iron reduction in the methanic sediments of the oligotrophic southeastern Mediterranean continental shelf." Biogeosciences 16, no. 16 (2019): 3165–81. http://dx.doi.org/10.5194/bg-16-3165-2019.

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Abstract. Dissimilatory iron reduction is probably one of the oldest types of metabolisms that still participates in important biogeochemical cycles, such as those of carbon and sulfur. It is one of the more energetically favorable anaerobic microbial respiration processes and is usually coupled to the oxidation of organic matter. Traditionally this process is thought to be limited to the shallow part of the sedimentary column in most aquatic systems. However, iron reduction has also been observed in the methanic zone of many marine and freshwater sediments, well below its expected zone and oc

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15

He, Jian, Vaishali Naik, Larry W. Horowitz, Ed Dlugokencky, and Kirk Thoning. "Investigation of the global methane budget over 1980–2017 using GFDL-AM4.1." Atmospheric Chemistry and Physics 20, no. 2 (2020): 805–27. http://dx.doi.org/10.5194/acp-20-805-2020.

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Abstract. Changes in atmospheric methane abundance have implications for both chemistry and climate as methane is both a strong greenhouse gas and an important precursor for tropospheric ozone. A better understanding of the drivers of trends and variability in methane abundance over the recent past is therefore critical for building confidence in projections of future methane levels. In this work, the representation of methane in the atmospheric chemistry model AM4.1 is improved by optimizing total methane emissions (to an annual mean of 580±34 Tg yr−1) to match surface observations over 1980–

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16

Wang, Jin, and Qinghua Peter He. "Methane Removal from Air: Challenges and Opportunities." Methane 2, no. 4 (2023): 404–14. http://dx.doi.org/10.3390/methane2040027.

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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, methane has been recognized as an important mitigation target due to its high global warming potential (GWP). However, methane’s low concentration in the atmosphere and stable molecular structure make its removal from the air highly challenging. This review first discusses the fundamental aspects of the challenges in atmospheric methane remova

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17

Yudiandika, I. Putu, I. Wayan Suarna, and I. Made Sudarma. "PENGARUH JUMLAH BAKTERI METHANOBACTERIUM DAN LAMA FERMENTASI TERHADAP PROPORSI GAS METANA (CH4) PADA PENGOLAHAN SAMPAH ORGANIK DI TPA SUWUNG DENPASAR." ECOTROPHIC : Jurnal Ilmu Lingkungan (Journal of Environmental Science) 11, no. 1 (2017): 29. http://dx.doi.org/10.24843/ejes.2017.v11.i01.p05.

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EFFECT OF NUMBER OF METHANOBACTERIUM AND FERMENTATION DURATION TO METHANE (CH4) GAS PROPORTION IN ORGANIC WASTE PROCESSING IN SUWUNG TPA DENPASARA research has been conducted to find out the effect to the amount of methanobacterium bacteria and fermentation duration toward proportion of methana (CH4) at organic waste processing at TPA Suwung Denpasar. Methana gas produced from this organic waste will be processed become fuel of electric generation. From this study will be expected to get all methana gas that contained at the waste so that there is no methana gas loss to the atmosphere. This st

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18

Buzan, E. M., C. A. Beale, C. D. Boone, and P. F. Bernath. "Global stratospheric measurements of the isotopologues of methane from the Atmospheric Chemistry Experiment Fourier Transform Spectrometer." Atmospheric Measurement Techniques Discussions 8, no. 10 (2015): 11171–207. http://dx.doi.org/10.5194/amtd-8-11171-2015.

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Abstract. This paper presents an analysis of observations of methane and its two major isotopologues, CH3D and 13CH4 from the Atmospheric Chemistry Experiment (ACE) satellite between 2004 and 2013. Additionally, atmospheric methane chemistry is modeled using the Whole Atmospheric Community Climate Model (WACCM). ACE retrievals of methane extend from 6 km for all isotopologues to 75 km for 12CH4, 35 km for CH3D, and 50 km for 13CH4. While total methane concentrations retrieved from ACE agree well with the model, values of δD–CH4 and δ13C–CH4 show a bias toward higher δ compared to the model and

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19

Zhao, Shutao, Yuzhong Zhang, Shuang Zhao, Xinlu Wang, and Daniel J. Varon. "A data-efficient deep transfer learning framework for methane super-emitter detection in oil and gas fields using the Sentinel-2 satellite." Atmospheric Chemistry and Physics 25, no. 7 (2025): 4035–52. https://doi.org/10.5194/acp-25-4035-2025.

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Abstract. Efficiently detecting large methane point sources (super-emitters) in oil and gas fields is crucial for informing stakeholder decisions about mitigation actions. Satellite measurements by multispectral instruments, such as Sentinel-2, offer global and frequent coverage. However, methane signals retrieved from satellite multispectral images are prone to surface and atmospheric artifacts that vary spatially and temporally, making it challenging to build a detection algorithm that applies everywhere. Hence, laborious manual inspection is often necessary, hindering widespread deployment

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20

Buzan, Eric M., Chris A. Beale, Chris D. Boone, and Peter F. Bernath. "Global stratospheric measurements of the isotopologues of methane from the Atmospheric Chemistry Experiment Fourier transform spectrometer." Atmospheric Measurement Techniques 9, no. 3 (2016): 1095–111. http://dx.doi.org/10.5194/amt-9-1095-2016.

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Abstract. This paper presents an analysis of observations of methane and its two major isotopologues, CH3D and 13CH4, from the Atmospheric Chemistry Experiment (ACE) satellite between 2004 and 2013. Additionally, atmospheric methane chemistry is modeled using the Whole Atmospheric Community Climate Model (WACCM). ACE retrievals of methane extend from 6 km for all isotopologues to 75 km for 12CH4, 35 km for CH3D, and 50 km for 13CH4. While total methane concentrations retrieved from ACE agree well with the model, values of δD–CH4 and δ13C–CH4 show a bias toward higher δ compared to the model an

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21

Neue, H. U., R. Wassmann, R. S. Lantin, M. C. Alberto, and J. B. Aduna. "Ebullition of methane." International Rice Research Notes 19, no. 3 (1994): 36–37. https://doi.org/10.5281/zenodo.6880460.

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This article 'Ebullition of Methane' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

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22

Elul, Michal, Maxim Rubin-Blum, Zeev Ronen, Itay Bar-Or, Werner Eckert, and Orit Sivan. "Metagenomic insights into the metabolism of microbial communities that mediate iron and methane cycling in Lake Kinneret iron-rich methanic sediments." Biogeosciences 18, no. 6 (2021): 2091–106. http://dx.doi.org/10.5194/bg-18-2091-2021.

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Abstract. Complex microbial communities facilitate iron and methane transformations in anoxic methanic sediments of freshwater lakes, such as Lake Kinneret (the Sea of Galilee, Israel). The phylogenetic and functional diversity of these consortia are not fully understood, and it is not clear which lineages perform iron reduction and anaerobic oxidation of methane (AOM). Here, we investigated microbial communities from both natural Lake Kinneret iron-rich methanic sediments (>20 cm depth) and iron-amended slurry incubations from this zone using metagenomics, focusing on functions associated

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23

Singh, Arvind, Gurpreet Kaur, and Bubun Banerjee. "Recent Developments on the Synthesis of Biologically Significant bis/tris(indolyl)methanes under Various Reaction Conditions: A Review." Current Organic Chemistry 24, no. 6 (2020): 583–621. http://dx.doi.org/10.2174/1385272824666200228092752.

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Bis(indolyl)methane skeleton is the main building block of many naturally occurring bioactive compounds. Bis(indolyl)methanes are found to possess a wide range of pharmaceuitical efficacies. These important scaffolds are being used as anti-cancer, antioxidant, anti-bacterial, anti-inflammatory, and anti-proliferative agents. In this review, we summarized the latest developments on the synthesis of various bis/tris(indolyl)methane derivatives from the reactions of two equivalents of indoles and one equivalent of aldehydes or indole-3-carbaldehydes under various reaction conditions. More than hu

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24

Ortikov, Nurbek, Normurot Fayzullaev, Davron Hamidov, and Firdavsiy Buronov. "Study of methane carbonate conversion process in fixed catalyst layer in different membrane reactors." E3S Web of Conferences 402 (2023): 14013. http://dx.doi.org/10.1051/e3sconf/202340214013.

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The work studied the characteristics of membrane catalysts in the reaction of methane carbonate conversion as a model reaction. This process produces synthesis gas (a 1:1 mixture of Н2 and СО), which can be used to make many products, including synthetic fuels (in the FischerTropsch process). One of the serious problems of methane carbonate conversion is the presence of side reactions that prevent the production of synthesis gas with the required ratio of products (H2:CO=1:1).Membrane catalysts were investigated in carbonate conversion of methane and membrane catalytic reactors: extractor, con

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Blankenship, Andrea N., Manoj Ravi, and Jeroen A. van Bokhoven. "Esterification Product Protection Strategies for Direct and Selective Methane Conversion." CHIMIA International Journal for Chemistry 75, no. 4 (2021): 305–10. http://dx.doi.org/10.2533/chimia.2021.305.

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A scale-flexible process for the direct and selective oxidation of methane to primary oxygenates is of great interest, however, a commercially feasible approach has yet to be realized due to a number of challenges. Low product yields imposed by a well-established selectivity-conversion limit are particularly burdensome for direct methane-to-methanol chemistry. One strategy that has emerged to break out of this limit is the in situ esterification of produced methanol to the more oxidation-resistant methyl ester. However, these methaneto-methyl-ester approaches still elude commercialization desp

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26

Ross, Julian. "Methane." Applied Catalysis A: General 117, no. 2 (1994): N19—N20. http://dx.doi.org/10.1016/0926-860x(94)85101-8.

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27

Nakoryakov, V. E., S. Ya Misyura, S. L. Elistratov, A. Yu Manakov, and A. A. Sizikov. "Methane combustion in hydrate systems: Water-methane and water-methane-isopropanol." Journal of Engineering Thermophysics 22, no. 3 (2013): 169–73. http://dx.doi.org/10.1134/s1810232813030016.

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28

Neue, H. U., R. Wassmann, R. S. Lantin, M. C. Alberto, and J. B. Aduna. "Methane emission from ricefields." International Rice Research Notes 19, no. 3 (1994): 31. https://doi.org/10.5281/zenodo.6880438.

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This article 'Methane Emission From Ricefields' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

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29

Ambundo, Edna A., Richard A. Friesner, and Stephen J. Lippard. "Reactions of Methane Monooxygenase Intermediate Q with Derivatized Methanes." Journal of the American Chemical Society 124, no. 30 (2002): 8770–71. http://dx.doi.org/10.1021/ja0265759.

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30

Galván, César G., José M. Cabrera-Trujillo, Ivonne J. Hernández-Hernández, and Luis A. Pérez. "Molecular dynamics approach for crystal structures of methane A and B." International Journal of Modern Physics C 28, no. 04 (2017): 1750048. http://dx.doi.org/10.1142/s0129183117500486.

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The carbon structures of phases A and B of methane are investigated through classical molecular dynamics simulations using optimized potentials for liquid simulations all-atom force fields as well as ReaxFF reactive force fields. Both final thermodynamic states were obtained by the proper ramping of temperature and pressure through well-known regions of methane’s phase diagram using the isothermal–isobaric (NPT) ensemble. Our calculated structures are in good agreement with very recent experimental data. The knowledge of these phases is the basis for the study of methane at high pressures.

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Maasakkers, Joannes D., Daniel J. Jacob, Melissa P. Sulprizio, et al. "Global distribution of methane emissions, emission trends, and OH concentrations and trends inferred from an inversion of GOSAT satellite data for 2010–2015." Atmospheric Chemistry and Physics 19, no. 11 (2019): 7859–81. http://dx.doi.org/10.5194/acp-19-7859-2019.

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Abstract. We use 2010–2015 observations of atmospheric methane columns from the GOSAT satellite instrument in a global inverse analysis to improve estimates of methane emissions and their trends over the period, as well as the global concentration of tropospheric OH (the hydroxyl radical, methane's main sink) and its trend. Our inversion solves the Bayesian optimization problem analytically including closed-form characterization of errors. This allows us to (1) quantify the information content from the inversion towards optimizing methane emissions and its trends, (2) diagnose error correlatio

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32

Nisbet, Euan G., Edward J. Dlugokencky, Rebecca E. Fisher, et al. "Atmospheric methane and nitrous oxide: challenges alongthe path to Net Zero." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 379, no. 2210 (2021): 20200457. http://dx.doi.org/10.1098/rsta.2020.0457.

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The causes of methane's renewed rise since 2007, accelerated growth from 2014 and record rise in 2020, concurrent with an isotopic shift to values more depleted in 13 C, remain poorly understood. This rise is the dominant departure from greenhouse gas scenarios that limit global heating to less than 2°C. Thus a comprehensive understanding of methane sources and sinks, their trends and inter-annual variations are becoming more urgent. Efforts to quantify both sources and sinks and understand latitudinal and seasonal variations will improve our understanding of the methane cycle and its anthropo

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33

Ricardo, O. Russo. "Mitigating Methane Emissions from Husbandry: A brief review." INTERNATIONAL JOURNAL OF LIFE SCIENCE AND AGRICULTURE RESEARCH 03, no. 06 (2024): 507–9. https://doi.org/10.5281/zenodo.12526775.

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ABSTRACT Methane is a potent greenhouse gas, produced naturally in the digestive systems of ruminants, from enteric fermentation, including those raised for milk and meat. The husbandry sector, which includes livestock farming and dairy production, significantly contributes to global methane emissions. These emissions not only contribute to climate change but also have negative impacts on the environment and human health. To mitigate these emissions, it is essential to implement sustainable practices and technologies that reduce methane production and emissions. An application objective of thi

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Prince, Bruce M. "Harnessing Nitrous Oxide for Sustainable Methane Activation: A Computational Exploration of CNC-Ligated Iron Catalysts." Methane 4, no. 1 (2025): 6. https://doi.org/10.3390/methane4010006.

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This study employs DFT at the APFD/def2-TZVP level, with SMD solvation in THF, to investigate the catalytic activation of methane by [(κ3-CNC)Fe(N₂O)]2+ cation complexes. The catalytic mechanism encompasses three key steps: oxygen atom transfer (OAT), hydrogen atom abstraction (HAA), and oxygen radical rebound (ORR). The computational results identify OAT as the rate-determining step, with activation barriers of −10.2 kcal/mol and 5.0 kcal/mol for κ1-O- and κ1-N-bound intermediates in the gas and solvent phases, respectively. Methane activation proceeds via HAA, with energy barriers of 16.0–25

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Kamalanathan, Stephanie, Kerry Houlahan, Filippo Miglior, et al. "Genetic Analysis of Methane Emission Traits in Holstein Dairy Cattle." Animals 13, no. 8 (2023): 1308. http://dx.doi.org/10.3390/ani13081308.

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Genetic selection can be a feasible method to help mitigate enteric methane emissions from dairy cattle, as methane emission-related traits are heritable and genetic gains are persistent and cumulative over time. The objective of this study was to estimate heritability of methane emission phenotypes and the genetic and phenotypic correlations between them in Holstein cattle. We used 1765 individual records of methane emission obtained from 330 Holstein cattle from two Canadian herds. Methane emissions were measured using the GreenFeed system, and three methane traits were analyzed: the amount

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Rivas-Loaiza, Juan A., Carlos E. Reyes-Escobedo, Yliana Lopez, Susana Rojas-Lima, Juan Pablo García-Merinos, and Heraclio López-Ruiz. "(Thio)urea-catalyzed Friedel-Crafts Reaction: Synthesis of Bis(indolyl)- methanes." Letters in Organic Chemistry 16, no. 12 (2019): 959–68. http://dx.doi.org/10.2174/1570178616666190222150915.

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:Bis(indolyl)methane derivatives (BIMs) were synthesized in moderate to good yields by (thio)urea catalyzed electrophilic substitution of indole (2) with various aldehydes 1. Reactions were performed under conventional and microwave (MW) heating, either using 1,2-dichloroetane as solvent or without solvent. The procedure using microwave heating was also applied to the synthesis of the natural products vibrindole A (3n), arsindoline A (3i), arundine (3o) and tris(1H-indol-3-yl)methane (3j). Additionally, the synthesis of streptindole was carried out via intermediate 3g. This methodology is well

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Huang, Bingxiang, Weiyong Lu, Shuliang Chen, and Xinglong Zhao. "Experimental investigation of the functional mechanism of methane displacement by water in the coal." Adsorption Science & Technology 38, no. 9-10 (2020): 357–76. http://dx.doi.org/10.1177/0263617420948700.

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During hydraulic fracturing in a high-methane coal seam, there is a water-displacing-methane effect. A pseudo triaxle experimental system, which is opposite to the name of true triaxial system, for the water-displacing-methane effect was created. First, cylindrical coal samples in a methane adsorption equilibrium state, spontaneously desorbed. And then water was injected into the coal samples. The following was shown: (1) The displacement methane volume gradually rises with an increase of injected water, while the displacement methane rate tends to rise at first before declining later. Simulta

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Wu, Tao, Jiankang Cheng, Shifang Wang, et al. "Hotspot Detection and Estimation of Methane Emissions from Landfill Final Cover." Atmosphere 14, no. 11 (2023): 1598. http://dx.doi.org/10.3390/atmos14111598.

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The main objectives of this study were to identify methane hotspots through spatial distribution tests of the surface methane concentration above a landfill final cover and to investigate the effects of rainfall, atmospheric pressure, ground temperature, and ambient methane concentration on methane emissions. A portable laser methane detector was used to measure the spatial distribution of methane concentrations. The methane concentration distribution showed a distinct spatial variability. The maximum methane concentration reached 3225 ppm, while 73.0% of the methane concentration values were

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Massa, Werner, Thomas Kämpchen, Johann Müller, and Ulf Pindur. "Zur Struktur von Tris(1,3-dimethyl-2-indolyl)-methan: Ein chiraler C3-Propeller aus der Trishetarylmethan-Reihe / The Structure of Tris(1,3-dim ethyl-2-indolyl)m ethane: a Chiral C3-Propeller in the Trishetarylmethane Series." Zeitschrift für Naturforschung B 41, no. 6 (1986): 762–67. http://dx.doi.org/10.1515/znb-1986-0614.

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AbstractThe structure of tris(1,3-dim ethyl-2-indolyl)methane (1) as a model compound for C3-skeleton symmetric trishetaryl-methanes is elucidated by X-ray diffraction and temperature dependant 1H NMR spectroscopy. The results demonstrate, that 1 adopts a chiral C3-propeller conformation (P/M-helix) as well in crystal as in solution.

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Neue, H. U., R. Wassmann, R. S. Lantin, M. C. Alberto, and J. B. Aduna. "Measuring methane emission." International Rice Research Notes 19, no. 3 (1994): 32. https://doi.org/10.5281/zenodo.6880444.

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This article 'Measuring Methane Emission' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

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Neue, H. U., R. Wassmann, R. S. Lantin, M. C. Alberto, and J. B. Aduna. "Measuring methane emission." International Rice Research Notes 19, no. 3 (1994): 32. https://doi.org/10.5281/zenodo.6880428.

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This article 'Measuring Methane Emission' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the development of improved technology for rice and rice-based systems. The series is a mechanism to help scientists keep each other informed of current rice research findings. The concise scientific notes are meant to encourage rice scientists to communicate with one another to obtain details on the research reported.

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42

Nahmatova, G. Ch, L. M. Gasanova, and T. M. Nagiev. "MECHANISM AND KINETICS OF DIRECT OXIDATION OF METHANE TO METHANOL BY HYDROGEN PEROXIDE ON A BIOMIMETIC CATALYST IN THE CONTEXT OF COHERENTLY SYNCHRONIZED REACTIONS." Azerbaijan Chemical Journal, no. 3 (June 24, 2025): 54–62. https://doi.org/10.32737/0005-2531-2025-3-54-62.

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The biomimetic catalyst penta-FTPhPFe(III)OH/Al2O3 was synthesized by adsorption of the active complex FTPhPFe(III)OH on Al2O3 from a solution in dimethylformamide The active complex concentration relative to the Al2O3 mass was 0.64 mg/g. Activity of penta- FTPhPFe(III)/Al2O3 biomimetic catalyst in the reaction of methane direct conversion into methanol by green oxidant hydrogen peroxide was studied at the t=150-350°C and atmospheric pressure, where methanol yield was 19.2% with methane conversion of 28%. The kinetic investigation of methane biomimetic monooxidation reaction with hydrogen pero

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Zhang, Xueli, Tao Zhu, Nengjing Yi, et al. "Study on Characteristics and Model Prediction of Methane Emissions in Coal Mines: A Case Study of Shanxi Province, China." Atmosphere 14, no. 9 (2023): 1422. http://dx.doi.org/10.3390/atmos14091422.

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The venting of methane from coal mining is China’s main source of methane emissions. Accurate and up-to-date methane emission factors for coal mines are significant for reporting and controlling methane emissions in China. This study takes a typical coal mine in Shanxi Province as the research object and divides the coal mine into different zones based on the occurrence structure of methane in Shanxi Province. The methane emission characteristics of underground coal mine types and monitoring modes were studied. The emissions of methane from coal seams and ventilation methane of six typical coa

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Borowski, Marek, and Zbigniew Kuczera. "Comparison of Methane Control Methods in Polish and Vietnamese Coal Mines." E3S Web of Conferences 35 (2018): 01004. http://dx.doi.org/10.1051/e3sconf/20183501004.

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Methane hazard often occurs in hard coal mines and causes very serious accidents and can be the reason of methane or methane and coal dust explosions. History of coal mining shows that methane released from the rock mass to the longwall area was responsible for numerous mining disasters. The main source of methane are coal deposits because it is autochthonous gas and is closely related with carbonification and forming of coal deposits. Degree of methane saturation in coal deposits depends on numerous factors; mainly on presence or lack of insulating layers in cover deposit that allow or do not

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Ringer, Ashley L., Michelle S. Figgs, Mutasem O. Sinnokrot та C. David Sherrill. "Aliphatic C−H/π Interactions: Methane−Benzene, Methane−Phenol, and Methane−Indole Complexes". Journal of Physical Chemistry A 110, № 37 (2006): 10822–28. http://dx.doi.org/10.1021/jp062740l.

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Cooper, G., E. Christensen, and A. P. Hitchcock. "Quasielastic electron scattering from methane, methane-d4, methane-d2, ethylene, and 2-methylpropane." Journal of Chemical Physics 127, no. 8 (2007): 084315. http://dx.doi.org/10.1063/1.2772275.

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Topp, Edward, and Elizabeth Pattey. "Soils as sources and sinks for atmospheric methane." Canadian Journal of Soil Science 77, no. 2 (1997): 167–77. http://dx.doi.org/10.4141/s96-107.

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Methane is considered to be a significant greenhouse gas. Methane is produced in soils as the end product of the anaerobic decomposition of organic matter. In the absence of oxygen, methane is very stable, but under aerobic conditions it is mineralized to carbon dioxide by methanotrophic bacteria. Soil methane emissions, primarily from natural wetlands, landfills and rice paddies, are estimated to represent about half of the annual global methane production. Oxidation of atmospheric methane by well-drained soils accounts for about 10% of the global methane sink. Whether a soil is a net source

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Xu, Zhen Chao, and Eun Duck Park. "Gas-Phase Selective Oxidation of Methane into Methane Oxygenates." Catalysts 12, no. 3 (2022): 314. http://dx.doi.org/10.3390/catal12030314.

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Methane is an abundant resource and its direct conversion into value-added chemicals has been an attractive subject for its efficient utilization. This method can be more efficient than the present energy-intensive indirect conversion of methane via syngas, a mixture of CO and H2. Among the various approaches for direct methane conversion, the selective oxidation of methane into methane oxygenates (e.g., methanol and formaldehyde) is particularly promising because it can proceed at low temperatures. Nevertheless, due to low product yields this method is challenging. Compared with the liquid-ph

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Jackson, Robert B., Sam Abernethy, Josep G. Canadell, et al. "Atmospheric methane removal: a research agenda." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 379, no. 2210 (2021): 20200454. http://dx.doi.org/10.1098/rsta.2020.0454.

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Atmospheric methane removal (e.g. in situ methane oxidation to carbon dioxide) may be needed to offset continued methane release and limit the global warming contribution of this potent greenhouse gas. Because mitigating most anthropogenic emissions of methane is uncertain this century, and sudden methane releases from the Arctic or elsewhere cannot be excluded, technologies for methane removal or oxidation may be required. Carbon dioxide removal has an increasingly well-established research agenda and technological foundation. No similar framework exists for methane removal. We believe that a

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Miriam Sheba, V., J. Jayaprakash, P. G. Nisha, B. Balaji Prasath, S. Debora, and T. Nargis Begum. "Influence of seasons and environmental variables on methane dynamics in the Muthukuda Mangrove sediments of Tamil Nadu." Journal of Environmental Biology 45, no. 4 (2024): 438–45. http://dx.doi.org/10.22438/jeb/45/4/mrn-5213.

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Aim: In order to understand the methane biochemistry in the Muthukuda mangrove ecosystem, this study aimed to report on methane production, oxidation, flux, and also to investigate the effect of seasons and environmental variables on methane dynamics. Methodology: Sediment analysis was carried out monthly for a year (2021-2022) from the Muthukuda mangrove, south-east coast of India, which is an unexplored region in terms of methane dynamics. Methane parameters methane concentration, methane oxidation, methane production and methanotrophic enumeration were analysed from the sediment samples col

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