Results 71 to 80 of about 256,142 (224)

Comparative Study of Methane Hydrate Formation and Dissociation with Hollow Silica and Activated Carbon

open access: yesChemical Engineering Transactions, 2018
Natural gas hydrates are ice-like crystalline compounds and non-stoichiometric, and methane is trapped inside the water cages of the hydrates. In recent years, the hydrates have received much attention for natural gas storage and transportation. However,
Sarocha Rungrussamee   +3 more
doaj   +1 more source

Porous Carbon Materials for Carbon Dioxide Capture

open access: yesCarbon Energy, EarlyView.
This work aims to address the current status and challenges associated with the regulation of pore structures, as well as the influence of pore structures on CO2 capture. Systematic quantitative analysis of structure–property relationships, combined with machine learning approaches, can effectively evaluate the contributions of structural ...
Zhifu Liu   +6 more
wiley   +1 more source

The Phase Equilibria of Natural Gas Hydrate in the Presence of 1,3-Dimethylcyclohexane and Octyl-β-D-glucopyranoside

open access: yesMolecules
The thermodynamic effect of octyl-β-D-glucopyranoside (OGP) on the formation of methane-1,3-dimethylcyclohexane (DMCH) hydrate was studied in this work. The thermodynamic equilibrium hydrate formation pressures between 275.15 K and 283.15 K were measured
Qiang Fu   +5 more
doaj   +1 more source

A Geophysical Review of the Seabed Methane Seepage Features and Their Relationship with Gas Hydrate Systems

open access: yesGeofluids, 2021
Seabed methane seepage has gained attention from all over the world in recent years as an important source of greenhouse gas emission, and gas hydrates are also regarded as a key factor affecting climate change or even global warming due to their shallow
Jinxiu Yang   +6 more
doaj   +1 more source

Biotechnological aspects of sulfate reduction with methane as electron donor [PDF]

open access: yes, 2010
Biological sulfate reduction can be used for the removal and recovery of oxidized sulfur compounds and metals from waste streams. However, the costs of conventional electron donors, like hydrogen and ethanol, limit the application possibilities.
Meulepas, Roel J.W.   +8 more
core   +1 more source

Discrete element numerical simulation of mechanical properties of methane hydrate-bearing specimen considering deposit angles [PDF]

open access: yes, 2020
Methane hydrate sediment (MHS) distributes under the seabed in different deposit angles according to the bottom simulating reflector (BSR) exhibitions. The mechanical properties of the combined sediment composed of soil and MHS dominate the stability of ...
Yan, Peng   +3 more
core   +1 more source

Tandem Electrolysers for High‐Efficiency CO2‐to‐Acetate Conversion Driven by Full‐Spectrum Solar Energy

open access: yesCarbon Energy, EarlyView.
A full‐spectrum solar‐driven tandem electrolysis system enables efficient CO2‐to‐acetate conversion by spectrally splitting sunlight and coupling high‐temperature SOEC CO2‐to‐CO electrolysis with ambient CO reduction. The integrated design achieves a solar‐to‐acetate efficiency of 15.8%, demonstrating effective energy‐quality matching for solar carbon ...
Shangchun Su   +8 more
wiley   +1 more source

Regulating Interfacial Water Structure on CoNi/MoN Heterostructures Boosts Electrocatalytic Nitrate Reduction to Ammonia

open access: yesCarbon Energy, EarlyView.
The CoNi/MoN interface effect induces electron transfer from CoNi species to MoN nanosheets, in which electron‐enriched CoNi/MoN interface captures K+ to form K+‐H2O, facilitating H2O dissociation to provide *H for accelerating hydrogenation steps, while electron‐deficient CoNi nanoparticles enhances the NO3− adsorption and reduces the free energy ...
Xue Chen   +8 more
wiley   +1 more source

Methane Hydrate Formation and Dissociation in the Presence of Silica Sand and Bentonite Clay

open access: yesOil & Gas Science and Technology, 2015
The formation and dissociation of methane hydrates in a porous media containing silica sand of different sizes and bentonite clay were studied in the presence of synthetic seawater with 3.55 wt% salinity.
Kumar Saw V.   +3 more
doaj   +1 more source

Experimental and Numerical Studies on Gas Production from Methane Hydrate in Porous Media by Depressurization in Pilot-Scale Hydrate Simulator [PDF]

open access: yes, 2012
Dissociation processes of methane hydrate in porous media using the depressurization method are investigated by a combination of experimental observations and numerical simulations.
Wang, Yi   +4 more
core   +1 more source

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